35 years ago I did the same gear conversion for my (Dutch) Berini with a Tomos engine. It used forced air cooling, but the carter units were similar. The clutch was a problem indeed! That machine got me around the whole of France afterwards and to the mountain tops of Andorra (with a 50 cc stock engine). A 4 week vacation trip of 4000 km.
Brings back memories. I can't remember how many times I replaced the crankshaft bearings on my Puch. Which I by the way converted from 3 to 4 gears. Thanks for sharing.
Tomology! Nice to see someone one that has done nearly same work and engine setup as i have done! My setup is a Tomos 4L Air cooled non pedal engine with transfers welded shut and ported to fit puch cylinder, its a 1983 block with Standard Derbi/AM6 style bearings stock and the crank case restriction holes covered from factory. Top Racing crank, c3 bearings, 24mm PWK, DMP AJH split port 70cc cylinder, Athena AJH piston, Derbi Malossi Reed cage carbon, Minarelli AM6 ignition system and flywheel, 5 gears, custom "Vastapaine" exhaust from Finland handmade, no head gasket but polished + copper grease, m8 cylinder studs 12.9. port timings right now are 203 exhaust and 136 transfers. And oh yea even a 3rd transfer cut at intake into crank case. My engine has been trugh a 10 year project to come to this setup and it screams! Hope you enjoy your engine and its fun to see someone building these old Tomos engines and not the automatics! Awesome! PS: the clutch is not an issue with grip i used one time 4 clutch disks + 6 springs but it bent the assembly but it worked. now i use 3 stock disks + 6 springs and it holds up fine!
Hey dude, awesome! I remember commenting with you about the clutch and my 5 disk clutch prototype. I ditched that idea and going to try this setup first but I'm guessing those plates won't last long at all. How long do yours last? When I have it running I'll try porting it too. Thought about a spacer in between the cylinder and the crankcase. How did you do it? Thanks for the love! Much love back to you!
@@Tomology My clutch is holding up fine. No slippage whatsoever at any rpm/load. Pretty amazing. Im at the moment running the cheap universal ones for puch/tomos with straight tabs and they clack ALOT at idle even with a brand new clutch cage but cant find the real tomos with bent tabs in Finland. Usually a set of the cheap ones last about 700km with my driving style and 70cc kit before the tabs have worn down to 3/4th of the original width. One thing is for sure the original clutch plate style uses a more harder clutch material than the aftermarket style so its an consern. At the moment i can do a 3rd gear 10000rpm clutch dump against a wall on asfalt and the engine will stall before the clutch slips 😅 One thing i will do when changing cage and a new tomos clutch plates is to weld piece of lathed pipe around the outermost edge of the clutch cage. I think im going to make it about 1.5mm thick and tack it with a tig. I have seen on a Finnish forum a guy that had a 80cc Honda CR cylinder? and the outer lip of the cluch bent like a flower but he was turning 16000rpm with stock clutch 🤔😅 One thing with the piston ported cylinders is usually they have "booster" ports at the back of the cylinder and that interfares with lifting the cylinder because the intake will be exposed to the combustion area and it will run like crap. I did try it by lifting 1.5mm and it exposed 0.5mm and the cylinder was junk. The way i "mill" down the culinder head surface is by just measuring with a digital caliper the length from block mating surface to cylinder head surface and gently using a table belt sander having the cylinder upside down and rotating it. Then measure each time each corner of the cylinder how much i need to take off. I use 40 grit sandpaper and its a nervwracking because of the nicasil if it chips but i have done 2 cylinders and no chips in cylinder liner. When i got the desired height i just do it by hand and use 120, 240, 320 and wet 400 sandpaper on a flat surface to get it smooth. Usually takes about 1h of belt sanding and 20min of manual sanding. Its a bit sketchy method but i use what i have 😅 Just be sure to use a belt sander with a belt as wide as the cylinder. 😎
drugačiji cilindar, veća kubikaža, veći prelivnjaci, samo jedna karika, elektronsko paljenje, veći frgić, e sad sam već znatiželjan, još prava usisna kutija i rezonantni spuh. Mogla bi to biti prava pila 👍
What fantastic 👍💯👍work you did! Makes me remember my boy-hood when I had a Tomos engine and drove for about three years with it! So many nice feelings of nostalgic memories your video brings up to the surface! Thank you very much for sharing so many well-done-building videos on your special and excellent channel! Best regards from Sweden! (Thumbs up and you got yourself a new subscriber!)🙂👍👍👍❣💯❣👍👍👍
Hoe heb je dat zijkapje gepolijst? Alleen met de schijf op 0:46 of met andere schijven, heb je een stappenplan/producten lijst anders? En ps je koppelingsplaten zitten verkeerd om, die lipjes moeten naar beneden.
eerst schuren tot hoge korrel en daarna met een wat hardere schijf en bruine pasta en als finish een zachte schijf met blauwe polijstpasta. heb het alleen niet echt gefilmd. koppelingsplaten werd ik al eerder op getipt en zitten inmiddels al goed. thanks voor het opmerken!
FINALLY! Someone who doesn't smash their bearings in! How hard is it to get pistons for this kit? You can modify the top of the piston above each port you want to change timing for, so you can modify your timing without cutting your cylinder.
temp difference is key. pistons are very easy to get and around 25€ so not that expensive. to get max performance you need to cut 3mm away and when cutting the piston it is going to interfere with the piston ring. In my opinion porting the cylinder is the best way
@@Tomology Yes it is. I toss the bearings in the freezer myself. Takes a little longer, but works well! Ah. When it's that much, you're right. Gotta cut the cylinder.
These main bearings have Smaller load capacity, so it is Better to widen the seat of the bearings in the block, and install the Newer - Stronger - Compact bearings 17-40-12, so, that they will stand the Heavyer piston and heavyer horsepower. Plus it Is Much Easyer to Assemble the One-Piece bearings , than the two pieced ones, because you do not need to waste any time with levelling the inner rings of the bearings onto the crankshaft. Those two-pieced bearings (17-40-10) did not stand much more horsepower than stock 2,6 horsepower. They certainly didn't endure more than 2 weeks when i tuned my 38 mm piston on stock cylinder with enlarged ports + dellorto 16 + reso exhaust to the "safe" 5 horsepower , back in the 1988 . But, when i installed the 17-40-12 bearings ( 6203 ) , they were indestructible for many years at 10-12 hp with Bing 22 or 24 .
yeah it's an option I considered beforehand but I figured it would work with some quality bearings. and if it breaks within 2 weeks, it atleast was a nice learning experience :)
@@Tomology Okay :-) I was on the same learning with better quality bearings back in those days ... :-) Now i am smarter than before, because i see the mistakes that people in the factory design/construction did . Have a nice evening :-)
voor zover mijn research moet de koppeling het kunnen houden alleen is slijtage een groot probleem. we gaan het zien en anders maken we zelf wel een koppeling!
@@Tomology slijtage heb je natuurlijk altijd, als hij maar niet begint te slippen!. ik rijd nu met een met een 65cc en heb ook zon gevoel dat mijn koppeling het zwaar heeft.(2bak automaat)
Je kunt er nog een extra onbeklede plaat bij leggen voor extra druk. Het is wat lastig monteren, maar het gaat wel. De koppeling zou best veel moeten kunnen hebben. In het E90 blok van Tomos zat volgens mij dezelfde koppeling.
Tomo, am broke, what gives more speed ? on a gy6 scooter that is. Clutch or Variator + rollers ? And are they worth spending on, i cant tell the difference between a racing clutch and a sport clutch
SZUPER VIDEÓ! Pozdrav! Imam Simson s51e. Tamo nema gasket, alu dihtung, itd, među cilindra i glave. Ja sam smanjio glavu oko 1mm-1,2mm.Važno je meriti distant između a to može sa "žicom" 2mm za lemjenje. Pogledaj video zvanično Simson s51 repariren, tuning. Tamo možeš videti metodu merenje zazora jako pouzdano i korisno. Smanjenje exploziv space je dobar tuning.
Lepo, ali to radilica od apn4 ne može dugo da izdrži. Svojevremeno sam spakovao nekoliko stotina radilica( rolnu do rolne na brušeni bolcn i brušenu klipnjaču) i to je bila ekstra kombinacija. Nikada nisam kada se radi sa L17 lagerima pakovao menjač dok ne stegnem u krug blok oko radilice da proverim kako se ona okreće u L17, tj da nema lufta ili da nije stegnuta. Pozdrav
Radilica nije od apn4 nego jedna od kvitetnijih, ako ne i najkvalitetnija radlica za apn blokove, rito race :) i decko je iz nizozemske pa te ne razumije :(
I have a complaint that you didn't put platinum ignition on the clutch goes crown nut with secured also cylinder as well as piston is not original look on google apn machines were produced near You also miss the boy that goes from the side as well as on the original cylinder and on the ignition fan and so cools down although not bad pozz👍👍
thanks. it's not an original engine build, hence the non original parts. it's cooled by the wind while riding so forced cooling and a fan isn't needed. this older engine came original with the clutch nut. later models have the crown nut.
@@TomologyDoes he have a kajla that prevents it from unscrewing while driving and for a cylinder as a kid I put a cylinder of t 15 that cooled the wind happened to me to overheat several times while the factory that has a fan can not do anything
Hello from Sweden, I recently obtained a Finnish moped which has a Tomos 4 speed engine. Parts for these are scarce here because they were originally not sold here. Where could i find a bearings and seal kit, the cylinder and 5th gear convertion? As I am looking to build a beast myself. Any updates on how the clutch is holding up?
hey parts are rare over here too. bought a few parts in a store called rinky toys and a lot is from the second hand market and local dealers who imported stuff from slovenia. outsourcing everything took me about a year. the cylinder is from a puch and therefore has different intake and exhaust port positions. I have not started it yet so can't update you about the clutch atm
Is your moped Solifer? I had here in Finland Solifer SM-79. It had a 4 speed gearbox. I bought 5th conversion kit 36 years ago, but I have not that moped any more
@@borisvanic7339 in my case it's 0.3mm shims on each side but be sure to measure it. allow about 0.1mm play between the crankshaft and the bearings and be sure it rotates smoothly. any more play than that should be compensated with shims
@@Tomology it doesn't look too complicated why don't you use a generic 4 speed honda gear box and case then make a custom jug and head to replace that old unreliable rare engine with cheap off the shelf parts
@@charliesybert2683 because it would be another boring other brand engine swap. It's a challenge and using an original Tomos engine on an original Tomos moped has value to me
@@Tomology please tell me when you will try because I have the same engine just need to put it together with the same cylinder and l am curious about that clutch
@@anzeahac523 I'll try to remember, but from what I've read online the clutch can hold the power with 3 plates and 6 springs but it wears out in about 250km
really don't know either. it depends on a lot of things. my best guess is between 8 and 12hp but maybe more if the setup is right?! have to put it on a dyno one day!
thanks, destijds was ik in de war met die mvt en had m op 1.5mm voor gezet maar dat is te weinig en ik vermoed dat ik daardoor ook een warmloper heb gehad
I prefer L17 above 'normal' solid bearings. L17 has the ability to set and adjust itself a little bit, which the 6203 bearings wont do. Tomos changed the design because L17 bearings are more expensive and need more attention to shimming.
alles is mogelijk, maar het is niet makkelijk en je hebt fatsoenlijke tools ervoor nodig. ik heb zelf een heel nieuw onderframe uitgetekend en lasergesneden en eronder gelast. de ophangpunten van een 4L blok zijn anders, de breedte van de blokophanging is 60mm ipv 50mm bij a35 blokken en je zult je achterbrug aanzienlijk moeten verbreden zodat de ketting recht loopt want het VTW van een 4L blok zit heel wat meer naar buiten!
35 years ago I did the same gear conversion for my (Dutch) Berini with a Tomos engine. It used forced air cooling, but the carter units were similar. The clutch was a problem indeed! That machine got me around the whole of France afterwards and to the mountain tops of Andorra (with a 50 cc stock engine). A 4 week vacation trip of 4000 km.
It would not get you far with 74cc cylinder. Those engines are notorious for crankshaft failures of any power modification is done.
@@dusanboss7749 @Dusanboss That's why he installed a rito aftermarket one👍
Brings back memories. I can't remember how many times I replaced the crankshaft bearings on my Puch. Which I by the way converted from 3 to 4 gears. Thanks for sharing.
Tomology! Nice to see someone one that has done nearly same work and engine setup as i have done! My setup is a Tomos 4L Air cooled non pedal engine with transfers welded shut and ported to fit puch cylinder, its a 1983 block with Standard Derbi/AM6 style bearings stock and the crank case restriction holes covered from factory. Top Racing crank, c3 bearings, 24mm PWK, DMP AJH split port 70cc cylinder, Athena AJH piston, Derbi Malossi Reed cage carbon, Minarelli AM6 ignition system and flywheel, 5 gears, custom "Vastapaine" exhaust from Finland handmade, no head gasket but polished + copper grease, m8 cylinder studs 12.9. port timings right now are 203 exhaust and 136 transfers. And oh yea even a 3rd transfer cut at intake into crank case. My engine has been trugh a 10 year project to come to this setup and it screams! Hope you enjoy your engine and its fun to see someone building these old Tomos engines and not the automatics! Awesome! PS: the clutch is not an issue with grip i used one time 4 clutch disks + 6 springs but it bent the assembly but it worked. now i use 3 stock disks + 6 springs and it holds up fine!
Hey dude, awesome! I remember commenting with you about the clutch and my 5 disk clutch prototype. I ditched that idea and going to try this setup first but I'm guessing those plates won't last long at all. How long do yours last? When I have it running I'll try porting it too. Thought about a spacer in between the cylinder and the crankcase. How did you do it? Thanks for the love! Much love back to you!
@@Tomology My clutch is holding up fine. No slippage whatsoever at any rpm/load. Pretty amazing. Im at the moment running the cheap universal ones for puch/tomos with straight tabs and they clack ALOT at idle even with a brand new clutch cage but cant find the real tomos with bent tabs in Finland. Usually a set of the cheap ones last about 700km with my driving style and 70cc kit before the tabs have worn down to 3/4th of the original width. One thing is for sure the original clutch plate style uses a more harder clutch material than the aftermarket style so its an consern. At the moment i can do a 3rd gear 10000rpm clutch dump against a wall on asfalt and the engine will stall before the clutch slips 😅 One thing i will do when changing cage and a new tomos clutch plates is to weld piece of lathed pipe around the outermost edge of the clutch cage. I think im going to make it about 1.5mm thick and tack it with a tig. I have seen on a Finnish forum a guy that had a 80cc Honda CR cylinder? and the outer lip of the cluch bent like a flower but he was turning 16000rpm with stock clutch 🤔😅 One thing with the piston ported cylinders is usually they have "booster" ports at the back of the cylinder and that interfares with lifting the cylinder because the intake will be exposed to the combustion area and it will run like crap. I did try it by lifting 1.5mm and it exposed 0.5mm and the cylinder was junk. The way i "mill" down the culinder head surface is by just measuring with a digital caliper the length from block mating surface to cylinder head surface and gently using a table belt sander having the cylinder upside down and rotating it. Then measure each time each corner of the cylinder how much i need to take off. I use 40 grit sandpaper and its a nervwracking because of the nicasil if it chips but i have done 2 cylinders and no chips in cylinder liner. When i got the desired height i just do it by hand and use 120, 240, 320 and wet 400 sandpaper on a flat surface to get it smooth. Usually takes about 1h of belt sanding and 20min of manual sanding. Its a bit sketchy method but i use what i have 😅 Just be sure to use a belt sander with a belt as wide as the cylinder. 😎
thank you so much bro! this is a perfect tomos motor restore build!!!
Bravo majstore,svaka cast
Odlicno odradjeno 👏👏👏
WOW, i did the same 12 years ago. Same engine with 5 speed gearbox and a Metra-Mahle set that looks like this one but was 80cc.
Tomos ctx?
@@matijajerman2005 Nope, a T4L from 1973 modified to T5L, a Dutch model. In your country it is know as APN 4
Wow,thats one tiny 5 speed. :-D
Ci BB
Verschrikkelijk. Absoluut niet genoeg gebeun voor een tomos ;p.
Nee in alle eerlijkheid man, wat een prachtwerk. Chapeau!
hahah tja! soms heeft ook een tomos wat liefde nodig :D
I appreciate you doing this. Teaching others.
drugačiji cilindar, veća kubikaža, veći prelivnjaci, samo jedna karika, elektronsko paljenje, veći frgić, e sad sam već znatiželjan, još prava usisna kutija i rezonantni spuh. Mogla bi to biti prava pila 👍
Nece bit nis posebno jer decko nije ni glavu obradio, i momak je iz nizozemske pa te nis ne razumije :(
@@jura1807 google translate helps me out. it's not perfect but it gives me some understanding of what people are trying to tell me :)
Your videos remind me of those old video game console restaurations. Very nice, good job!
Svaka cast.
Echt supernetjes allemaal! Lekker bezig!🍻
Malo sam zahrđao po pitanju frizranja Tomosa.
Zanima me od kuda i gdje nabaviti te djelove, cilindar, klip, paljenje, itd
frco moto
I suggest that when you install the crankcase seals you should put a small amount of grease between the inner part and crankshaft.
I use engine oil instead of grease.
Very nice restoration... its very clean.. done right but with no overperfection... i like it..
It's beautiful!!! Old school know how and talent. You did such a good job "I can cross this off my bucket list". Cheers!
What fantastic 👍💯👍work you did! Makes me remember my boy-hood when I had a Tomos engine and drove for about three years with it! So many nice feelings of nostalgic memories your video brings up to the surface! Thank you very much for sharing so many well-done-building videos on your special and excellent channel!
Best regards from Sweden! (Thumbs up and you got yourself a new subscriber!)🙂👍👍👍❣💯❣👍👍👍
If your clutch is slipping remove those thin spacers in it completely it won't slip mine was slipping when it was new and i did that and worked great
Best regards. great job. can i get information where to buy cylinder, complete ignition same as here, carburetor also. thanks
Wich engine did yuo use that Will fit the 5 speed
Mooi filmpje. Als je het 5e versnelling tandwiel andersom erop zet heb je geen shim nodig. Of zie ik dat verkeerd?
nee klopt, ik zag het destijds verkeerd. in de nieuwe video zit ie andersom!
Where can I buy tomos 49cc cylinder head and piston assembly
Hoe heb je dat zijkapje gepolijst? Alleen met de schijf op 0:46 of met andere schijven, heb je een stappenplan/producten lijst anders?
En ps je koppelingsplaten zitten verkeerd om, die lipjes moeten naar beneden.
eerst schuren tot hoge korrel en daarna met een wat hardere schijf en bruine pasta en als finish een zachte schijf met blauwe polijstpasta. heb het alleen niet echt gefilmd. koppelingsplaten werd ik al eerder op getipt en zitten inmiddels al goed. thanks voor het opmerken!
where do you buy the parts ?
FINALLY! Someone who doesn't smash their bearings in!
How hard is it to get pistons for this kit? You can modify the top of the piston above each port you want to change timing for, so you can modify your timing without cutting your cylinder.
temp difference is key. pistons are very easy to get and around 25€ so not that expensive. to get max performance you need to cut 3mm away and when cutting the piston it is going to interfere with the piston ring. In my opinion porting the cylinder is the best way
@@Tomology Yes it is. I toss the bearings in the freezer myself. Takes a little longer, but works well!
Ah. When it's that much, you're right. Gotta cut the cylinder.
I toss m in the freezer too but I've had some times it wasn't cold enough so with this freeze spray it works great
Where can i buy the cylinder kit?
what is the price of that cylinder, ignition and carburetor
From where did you get the cylinder
These main bearings have Smaller load capacity, so it is Better to widen the seat of the bearings in the block, and install the Newer - Stronger - Compact bearings 17-40-12, so, that they will stand the Heavyer piston and heavyer horsepower. Plus it Is Much Easyer to Assemble the One-Piece bearings , than the two pieced ones, because you do not need to waste any time with levelling the inner rings of the bearings onto the crankshaft. Those two-pieced bearings (17-40-10) did not stand much more horsepower than stock 2,6 horsepower. They certainly didn't endure more than 2 weeks when i tuned my 38 mm piston on stock cylinder with enlarged ports + dellorto 16 + reso exhaust to the "safe" 5 horsepower , back in the 1988 . But, when i installed the 17-40-12 bearings ( 6203 ) , they were indestructible for many years at 10-12 hp with Bing 22 or 24 .
yeah it's an option I considered beforehand but I figured it would work with some quality bearings. and if it breaks within 2 weeks, it atleast was a nice learning experience :)
@@Tomology Okay :-) I was on the same learning with better quality bearings back in those days ... :-) Now i am smarter than before, because i see the mistakes that people in the factory design/construction did . Have a nice evening :-)
Where did u bought airsal kit from?
Awesome build man
Where did you get the parts (ignition crankshaft etc....) I have a tomos 15 i want to modify.
crankshaft and those parts are very rare unfortunately. I got the ignition from puchshop
Molim te reci mi koju si radilicu stavio❤❤❤
rito crank
Wow amazing job! Can you do a parental relation restoration next?
7.20 im just curious what do you mean by rare kickstart shaft?
in the Netherlands it's a rare part
oh
well i'm from slovenija so if you need them i could proabably get you a couple@@Tomology
Super posao! Imaš li video kako ide ta mašina na cesti?
not yet, but very soon! stay tuned
Why that piston only have 1 piston ring, isnt better to have 2 for more compression?
Some high rpm cylinders use only one ring to lower friction
Ik hoop dat die koppeling na wat werk het vermogen aan kan, zou een hele mooie setup zijn met de schijfremmen van de cafe racer straks
voor zover mijn research moet de koppeling het kunnen houden alleen is slijtage een groot probleem. we gaan het zien en anders maken we zelf wel een koppeling!
@@Tomology slijtage heb je natuurlijk altijd, als hij maar niet begint te slippen!. ik rijd nu met een met een 65cc en heb ook zon gevoel dat mijn koppeling het zwaar heeft.(2bak automaat)
@@stormtorcque9247 dat klopt, maar ik heb geen zin elke 500km de platen te vervangen hahah
Je kunt er nog een extra onbeklede plaat bij leggen voor extra druk. Het is wat lastig monteren, maar het gaat wel. De koppeling zou best veel moeten kunnen hebben. In het E90 blok van Tomos zat volgens mij dezelfde koppeling.
Hi, where did you buy this kit.
Hpw is that thing for polishing called
My boss know all types of bearings and oil seals what guy use for it from his head👏👏👏👍👍👍
Tomo, am broke, what gives more speed ? on a gy6 scooter that is. Clutch or Variator + rollers ? And are they worth spending on, i cant tell the difference between a racing clutch and a sport clutch
I don't know. I'm not a scooter guy and have never worked on one.
Zakaj si stavio 5 brzinu naopacke u masinu?? Al svaka cas na radu
it was a mistake I made the first time I built it.
Engine of 74cc was used on Tomos CTX motorcycles
this particular engine is from a 4L and the 74cc cylinder is from a Puch
Koliki je sad promjer klipa?
SZUPER VIDEÓ! Pozdrav! Imam Simson s51e. Tamo nema gasket, alu dihtung, itd, među cilindra i glave. Ja sam smanjio glavu oko 1mm-1,2mm.Važno je meriti distant između a to može sa "žicom" 2mm za lemjenje. Pogledaj video zvanično Simson s51 repariren, tuning. Tamo možeš videti metodu merenje zazora jako pouzdano i korisno. Smanjenje exploziv space je dobar tuning.
I'll look after the squish gap and other stuff when the bike is near its first start!
how much would the total price of a engine built like thisone cost
Svaka čast. Malo boljše kot smo to mi včasih delali .. :-)
Did you have any issues with this much power? Clutch bell or gears breaking?
I stripped 3rd gear; see my community post. and so far nothing else but it's waiting for it to happen :)
ma gledao sam ja. razletili mu se lezajevi ovi na radilici i normalno da mu je puklo zvono od lamele.. razletila se korpa od kvacila
Airsal is not Bad, its only cheap. You cannot destroy an airsal cylinder when you can drive good :D Airsal is one of the best
it's cheap, does the job but certainly isn't the best quality out there
Lepo, ali to radilica od apn4 ne može dugo da izdrži.
Svojevremeno sam spakovao nekoliko stotina radilica( rolnu do rolne na brušeni bolcn i brušenu klipnjaču) i to je bila ekstra kombinacija.
Nikada nisam kada se radi sa L17 lagerima pakovao menjač dok ne stegnem u krug blok oko radilice da proverim kako se ona okreće u L17, tj da nema lufta ili da nije stegnuta. Pozdrav
Radilica nije od apn4 nego jedna od kvitetnijih, ako ne i najkvalitetnija radlica za apn blokove, rito race :) i decko je iz nizozemske pa te ne razumije :(
Kan ik dit ook thuis doen zonder alle apparatuur?
Je hebt een aantal basistools nodig en een paar kleine extra tools, maar het is zeker thuis te doen!
Very good build! But why the liquid metal in the crankcase- ports??🤔
thanks! I had a lot of problems welding the ports because the metal became very porous hence why I used liquid metal to make it smooth
@@Tomology ahh, ok.. i did not see that you were forced to weld the crankcase, i thought just have to wide up the ports a little bit
@@mx125dave yeah, it's hard to notice in a sped up video ;) had to weld and remove some material to make it match the ports on the cylinder
@@Tomology good job!
What ignition have you got in it? Can you give me some link please? 🙏🙏
mvt premium
@@Tomology thanks
Very nice tomos 4L engine job ø.
Where did you buy the rito crankshaft?
I know it is hard to find.
I got it from a local shop and parts where indeed pretty hard to come by
@@Tomology Waar heb je de krukas kunnen kopen als ik vragen mag? ik zoek er nog een
@@svenvanbeek5487 bij rinkytoys al meer dan een half jaar geleden. helaas zijn ze daar nu uitverkocht
@@Tomology ah balen
Where do you buy parts for apn4?
I bought a lot at local shops and parts were very hard to find
I have a complaint that you didn't put platinum ignition on the clutch goes crown nut with secured also cylinder as well as piston is not original look on google apn machines were produced near You also miss the boy that goes from the side as well as on the original cylinder and on the ignition fan and so cools down although not bad pozz👍👍
thanks. it's not an original engine build, hence the non original parts. it's cooled by the wind while riding so forced cooling and a fan isn't needed. this older engine came original with the clutch nut. later models have the crown nut.
@@TomologyDoes he have a kajla that prevents it from unscrewing while driving and for a cylinder as a kid I put a cylinder of t 15 that cooled the wind happened to me to overheat several times while the factory that has a fan can not do anything
Hello from Sweden, I recently obtained a Finnish moped which has a Tomos 4 speed engine. Parts for these are scarce here because they were originally not sold here. Where could i find a bearings and seal kit, the cylinder and 5th gear convertion? As I am looking to build a beast myself. Any updates on how the clutch is holding up?
hey parts are rare over here too. bought a few parts in a store called rinky toys and a lot is from the second hand market and local dealers who imported stuff from slovenia. outsourcing everything took me about a year. the cylinder is from a puch and therefore has different intake and exhaust port positions. I have not started it yet so can't update you about the clutch atm
Hello david, send me a DM on my instagram account “@gh.racing”
I can help you find all the parts that you need.
Is your moped Solifer? I had here in Finland Solifer SM-79. It had a 4 speed gearbox. I bought 5th conversion kit 36 years ago, but I have not that moped any more
@@larrymanfred4811 terve. Tää on solifer sm86
Olen ruotsin puhun pieni suomalaiset:)
Svaka cast! Kada biti test
Hvala! nadam se ovo ljeto :)
kolk je končna?
Dje da nadjem paljenje za tomosa i ovaj nastavak za karburator
with what did u filled the break through holes after trenching?
jb weld metal epoxy
mi poveš kako se imenuje pasta, ki si jo uporabil 2:36
jb weld
imam jedno pitanje dali je radilica standardna ili ne?
the crankshaft isn't stock
Koliko vremena je radil motor? Ali više radi?😁
Svidja mi kako si odradio ovo, i kako si editovao klip
thanks I appreciate it!
Man Thank you ,this video helps
Hi, I have a problem. Can you tell me if you know what the distance between the bearings and the crankshaft must be
Sory right now I now
From your video
@@borisvanic7339 in my case it's 0.3mm shims on each side but be sure to measure it. allow about 0.1mm play between the crankshaft and the bearings and be sure it rotates smoothly. any more play than that should be compensated with shims
@@Tomology ok, thanka
je sornik 12 al 10?
What do these engines come on?
this perticular one is from a tomos 4L. a Dutch version of the Slovenian APN4. a moped from the 60's till around the 80's I believe
Pozz. Gdje se nalazis? Imam masinu od BTa koju bi voleo renovirat... Hvala unaprijed
I'm from the Netherlands
Thanks for the video everone, keep up the great work everyone
Go 2stroke !!!
☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆
a si slovenc? kaj stojni vijaki rabijo bit kaj premaknjeni ?
So is this a custom engine or can I buy one somewhere
it's a Tomos 4L or APN4 engine with custom parts. you can buy those used. over here in the Netherlands they are quite rare
@@Tomology it doesn't look too complicated why don't you use a generic 4 speed honda gear box and case then make a custom jug and head to replace that old unreliable rare engine with cheap off the shelf parts
@@charliesybert2683 because it would be another boring other brand engine swap. It's a challenge and using an original Tomos engine on an original Tomos moped has value to me
In de jaren 80 had ik een 70cc kreidler zeta onder m’n 5L, kon ermee de snelweg op :-)
How did you get the gears?
buy them online
I heard lubricants should not be used when installing bearings else you risk them spinning in the casing
the 'lubricant' you see is actually freeze spray to make the metal shrink for an easier install
@@Tomology Oh, I did not know this procedure. I'll keep this in mind when rebuilding my engines
Jemig wat een built zeg, dit word een mooie cafe racer zo
dat dacht ik :D
Max speed?
Where did you buy the parts
local shops and collectors. took me almost a year to get all the necessary parts
Will this clutch be ok with the power of engine?
probably not. I will find out very soon with the first testdrive
@@Tomology please tell me when you will try because I have the same engine just need to put it together with the same cylinder and l am curious about that clutch
@@anzeahac523 I'll try to remember, but from what I've read online the clutch can hold the power with 3 plates and 6 springs but it wears out in about 250km
@@Tomology thank you very much...do you know is clutch from newer models with 4 plates is better? And 6 springs?
@@anzeahac523 I think so, but I guess it will wear out fast too
How much power(hp)does the engine make with that kit?
really don't know either. it depends on a lot of things. my best guess is between 8 and 12hp but maybe more if the setup is right?! have to put it on a dyno one day!
Stock crankshaft?
no, rito crank
Sa cime si ismirglo dekla tako na pocetku msm koja gradacija
Netjes! Op hoeveel mm voor ontsteking heb je de ontsteking gezet?
thanks, destijds was ik in de war met die mvt en had m op 1.5mm voor gezet maar dat is te weinig en ik vermoed dat ik daardoor ook een warmloper heb gehad
whats the price of the electric?
I bought it a year ago for 220. rn they are more I believe
Koja je cena palenja i da li ima opciju za svetlo
it was about 220 euro and it delivers 55watts to charge a battery and provide power for the lights
Its that l17 wheelbering bether that normal wheelbering?
probably not because manufacturers switched to the bearings that are the standard today
I prefer L17 above 'normal' solid bearings. L17 has the ability to set and adjust itself a little bit, which the 6203 bearings wont do. Tomos changed the design because L17 bearings are more expensive and need more attention to shimming.
@@SwiffMeister nice to know!
Znam da piše apn ova mašina ali cilindar i glava su od 90 electronic ili ctx?
the cylinder is a 74cc airsal for a puch not an e90 cylinder
Ok thank you maby I will buy that kit for my apn 6
Is it worth buyng it ?
@@diegoladavac780 it's relatively cheap and performs well so I guess. I hope to test it out soon
Perfect!
Why not use a dremel?
I did not own one at the time
Je li blok motora originalan?
nope
does this fit on a tomos a35
with completely modifying engine mount and swingarm, yes. but the short answer is no it doesn't fit
Video kako deluje na mopedu? :D
I'm working on it. hopefully this summer!
@@Tomology bi lahko dobo kak kontakt od vas
Nice torque wrench
pekerja an yg sempurna 👍
Is het mogelijk om zo'n 4l blok onder een tomos s25/a3 te hangen als je het frame bewerkt
alles is mogelijk, maar het is niet makkelijk en je hebt fatsoenlijke tools ervoor nodig. ik heb zelf een heel nieuw onderframe uitgetekend en lasergesneden en eronder gelast. de ophangpunten van een 4L blok zijn anders, de breedte van de blokophanging is 60mm ipv 50mm bij a35 blokken en je zult je achterbrug aanzienlijk moeten verbreden zodat de ketting recht loopt want het VTW van een 4L blok zit heel wat meer naar buiten!
@@Tomology weet jij toevallig of het dan makkelijker is om m onder een puch of tomos want je ziet best wel veel puch maxi's rondrijden met een 4l blok
@@radio-180cc geen idee maar ik ga er vanuit dat het alsnog een hoop werk is omdat niks past.
@@Tomology bedankt👍
@@Tomology heb jij zelf zoveel tekenskills en engeneering kunde? 😉
Can anybody explained how tomos transmission work in here?
everytime you shift up a selector pin moves one gear forward and the pin engages with the next gear
So, the shift is make the cone-shaped transmisson gear moving? What kind of these transmission? I'll subscribe you channel.
@@febriyogapratama7462 when shifting a part inside those 5 gears moves and select one gear to output power to the driveshaft
@@Tomology finally i know how cone shape gearbox work.
Thanks dude. I wait your next vid.
@@febriyogapratama7462 busy atm but soon there will be more vids!
nog een vraag, heb je die kickstart as in Nederland of Slovenië ofzo gehaald? en de gaten in de kap dan dichtgemaakt?
poging gedaan tot importeren maar zonder succes. heb na een jaar wachten heel veel geluk gehad op marktplaats :D carterkap zit een abs prop in
@@Tomology Ik ga binnenkort ook een 4l blok reviseren, kan ik jou misschien ergens makkelijk contacteren als ik vragen heb?
@@svenvanbeek5487 info.tomology@gmail.com