An experiment fitting a carb from Aliexpress to my C15. I've abandoned it for the time being. I did take it for a run and it didn't feel too much different.
Enjoying the C15 progress, would love updates on the carburettor and the Enfield alternator outcome with more rides out on those amazing scenic roads with the BSA. I'm very jealous of the delightful roads you have on your doorstep perfect for riding motorcycles.
Hello Ian that is so kind of you to show interest. The engine is being stripped again mainly to deal with oil leaks. The Enfield alternator seems to work well. It keeps the battery charged. If I put the lights on it overcharges. Could be the LED conversion drawing so little current. I have given up for the time being on the Mikuni copy. I might get round to a film but it is awfully cold in my garage!
@@hughferrier5837 worth a go anyway, I can still remember the joy when I replaced the points on my starfire with electronic ignition made such a difference, still shame it didn’t work out for you
Interesting idea {and impressively fast working ;-)}. It was worth a try. Decades ago, I had a devil of a job with my 3TA because the slide on the Monobloc was worn. I tried a replacement but it was impossible at that time to get a copy carburettor in which the jet block was made to fine enough tolerances to avoid snagging the slide. In the end, I struggled on with the old Amal and just had to avoid the flat spot on the throttle opening. My AJS came with a Wassell carb (concentric style) which is going pretty well, so I haven't disturbed it or even considered going back to a Monobloc, although I have no idea how it has been set up inside.
Hello William I gave up on that. The carb is really for a two stroke bike. I struggled with jets. I rebuilt an old Monobloc as you've seen. It ran pretty well on the old slide. You are certainly looking at my wee films!
Hi Hugh, I have fitted one of these to my B40, the jetting can take a while to set up. The needles on these all seem to be 2 stroke, and are rich in thr wrong places!! I used a JJN needle, 32 pilot and 130 main jets, which os still a bit rich!!
Hello Graham that could be very helpful. I just struggled to get it set up. I may try again. If it were to run sweet on it I'd go for it! I have gone back to a Monobloc I rebuilt and the wee BSA is running better on it. Thank you so much.
Very helpful hugh. Am thinking of experimenting with a 26mm version of this and opening my inlet port to suit as shown in RR. It seems like you were able to use the Amal throttle cable so an easy change. Good to know.
I have shelved for the time being. It did run but very rich. I did try other jets but got nowhere. It is a carb for a two stroke so was probably over ambitious. I will probably experiment again. Thanks for commenting.
Hugh hi and hope you are well. Hugh can you tell me where you got the carburettor to air filter hose from and what air filter you are using. Also, on the oil front, do you put oil into the primary chain side where the magneto is as I don’t believe you have mentioned it - or leaks - from that area. As always many thanks Sid
Hello Sid I was busy at something else on my computer when your message popped in. The hose was purchased on Ebay - Straight Reducer Silicone Hose Coupler Joiner Stoney Racing Drop Down Pipe Turbo Internal Diameter: 36mm - 32mm Colour: Black £8.85 Sold by: silicone-hose-shop The air filter is a foam filter purchased from AliExpress - 32mm 35mm 38mm 42mm 45mm 48mm Bend Elbow Neck Foam Air Filter Sponge Cleaner Moped Scooter Dirt Pit Bike Motorcycle RED Kayo BSE I purchased the 32mm as that fitted to the original concentric. They are coupled by a piece of aluminium tube 32mm purchased on Ebay. Yes there is oil in the primary chain case. Sorry not to be clear. You fill at the big slotted plug on the chaincase. The filler level is the front lower casing bolt. You fill till it drips out there. It doesn't take much. The primary chaincase is the only part that doesn't leak as far as I'm aware! I put 20W50 oil in all three oil filled areas. So much for it being unit construction! I feel really well. I hope you are too. Kind wishes, Hugh
Hello David I gave up on that carb. It was an interesting experiment. The carb fits well and I did get it to run. I could not get the pilot circuit right even changing jets. I am not wise enough. I should probably not have tried a carb designed for two strokes. It would have been very economic. Now I am rebuilding a proper Amal monobloc 375/34. That's what it was meant to have. Thanks for your interest. I may try to get the Mikuni copy to go again. It's low down my priorities.
Hi Hugh, really enjoying your BSA C15 videos, can't wait for the next one. I have a question regarding your carburettor, it looks like you are running an Amal concentric, please can you tell me which one and what jets you are using. I asking because my Amal monobloc is not serviceable and I need to find a replacement. Many thanks and keep up the good work. Roger
Hello Roger thank you for your nice comments. This is the carburetor I have - Amal 622 - L301 Current settings: main jet 160 needle jet 106 needle 2 inscribed rings (Part No:622/124) slide 3½ I am not certain it is perfect but it certainly runs and idles well. I hope that helps.
So Hugh, going back to the gearbox oil leak..was the bad helecoil you identified the source of the gearoil leak ? I noticed when you fitted the timing case, for the second time , you didn't fit the gasket ? or was it the camera angle ? no amount of Blue Hylomar will stop it leaking if you leave the gasket off . Anyway its all rather relaxing watching someone else work especially with the wonderful accompanying soundtrack of native bird song . Kindest regards Damian .
Hello Damian thank you for taking an interest and commenting. I didn't realise there was a gasket for the timing case. Maybe I'm being stupid. Is it between the crankcase and the inner timing cover of the inner timing cover and the outer timing cover. I am still leaking a heap of oil from the gearbox and I can't really see where from. This may be the problem. I would love if a gasket solved the problem. My other big leak is from the pushrod tube. I think the lower black seal. You sound as if you know what you are up to. Any advice. It would be great not to have my right boot coated in oil after a run. This leak was introduced by me on the rebuild. Some days I feel like chucking it into the burn that flows below my garage. Glad its relaxing for you. Very stressful for me despite the birdsong. Take care.
@@hughferrier5837 OK so I would say your oil is leaking not only out of the gear box onto the floor but also engine oil is leaking from the front section of the inner timing case to the rear , and vice versa, the 2 separate oils are also mixing together between the two cavities inside the inner timing case along the vertical edge of the sealing face, this would also explain why the oil tank level is increasing , the oil pump is simply scavenging and returning gear oil that's leaking through. A little long winded i know but I hope that helps explain not only the reason but also the symptoms and more importantly the cure. Sorry but the timing side will have to come off again! leave the Gearbox intact just ease the timing cover off, clear all that hylomar off , and order a full gasket set from 'Burton Bike bits' or 'Draganfly' and you will be able to re assemble it, as you are becoming ever more proficient at doing, and suffer no more oil soaked right foot or dripping on the floor. Do another video explaining what the cause was as there are no doubt many others who have made the same mistake. We all live to learn Hugh , Look forward to the next instalment. kind regards Damian.
@@damiantuttle402 Thanks for advice Damian. I still can't see a gasket on the timing side even on Dragonfly's parts diagram. I am going to strip the engine again and lap the casings and covers on a flat surface. We will see. The main leak between gearbox and engine was due to the cork gasket missing at the selector shaft cover. I wish Honda engineers had helped!
@@hughferrier5837 Well yes I can see what you mean , after looking at a few gasket sets online there appears to be NO gasket for the inner timing case. So apologies for the duff info . What made me think there IS supposed to be one is this ...I've built 5 BSA A65 engines over the years and although a twin cylinder motor , the construction in terms if the crankcases and timing case is the same, however on A65s a gasket is used to seal the 2 faces , that between crankcase and timing case. Why on earth this is different on the unit singles I beyond me..utterly baffling no wonder they have such a poor rep for leaking ! maybe someone can enlighten us both as to why this is ? So again Hugh..My apologies for sending you off in a tangent . Please do a follow up video explaining how you resolve the issue and also why listening to people online who get their facts wrong is a bad idea !! hahaha
@@damiantuttle402 Damian you were trying to help which is an incredibly nice human response in this time of selfish living. A gasket would have been brilliant but as you say why they didn't use one when they did on the A65 we will never know. What is so sad is it is a lovely wee bike in looks. It is let down by cutting corners. I just want it to run nicely and go for long runs on a nice day. Take care Damian. Enjoy your bikes. I will try and put a film of the repair but I often get stuck in before remembering my camera. I am going to try Brian Alfonso's technique of dressing casings. His Chanel is superb.
@@gordonbriggs2345 I know but I'm a Scotsman. It was just an experiment and cost next to nothing. It's running happily on a rebuilt monobloc so that will do me.
@@hughferrier5837 Sorry hugh i did not mean you are tight scotsman its just that i have tried to go cheap in the past and it has cost me dear.i am just about to fit a 32mm mikuni to an enfield bullet at a cost of £150 so you may still have the last laugh.love your vids hugh your a bit like me out on my own in the wilds of wiltshire its great.ride safe hugh and god go with you .
Enjoying the C15 progress, would love updates on the carburettor and the Enfield alternator outcome with more rides out on those amazing scenic roads with the BSA. I'm very jealous of the delightful roads you have on your doorstep perfect for riding motorcycles.
Hello Ian that is so kind of you to show interest. The engine is being stripped again mainly to deal with oil leaks. The Enfield alternator seems to work well. It keeps the battery charged. If I put the lights on it overcharges. Could be the LED conversion drawing so little current. I have given up for the time being on the Mikuni copy. I might get round to a film but it is awfully cold in my garage!
I thought about putting Japanese carbs on my lightning in the 80s as was getting fed up tinkering with them
@@ianbonnick7640 I gave up on this as I was fiddling too much trying to sort out jets. It's a two stroke bikes carb being used on a four stroke.
@@hughferrier5837 worth a go anyway, I can still remember the joy when I replaced the points on my starfire with electronic ignition made such a difference, still shame it didn’t work out for you
Interesting idea {and impressively fast working ;-)}. It was worth a try. Decades ago, I had a devil of a job with my 3TA because the slide on the Monobloc was worn. I tried a replacement but it was impossible at that time to get a copy carburettor in which the jet block was made to fine enough tolerances to avoid snagging the slide. In the end, I struggled on with the old Amal and just had to avoid the flat spot on the throttle opening. My AJS came with a Wassell carb (concentric style) which is going pretty well, so I haven't disturbed it or even considered going back to a Monobloc, although I have no idea how it has been set up inside.
Hello William I gave up on that. The carb is really for a two stroke bike. I struggled with jets. I rebuilt an old Monobloc as you've seen. It ran pretty well on the old slide. You are certainly looking at my wee films!
@@hughferrier5837 I'm gradually catching up.
Hi Hugh, I have fitted one of these to my B40, the jetting can take a while to set up. The needles on these all seem to be 2 stroke, and are rich in thr wrong places!! I used a JJN needle, 32 pilot and 130 main jets, which os still a bit rich!!
Hello Graham that could be very helpful. I just struggled to get it set up. I may try again. If it were to run sweet on it I'd go for it! I have gone back to a Monobloc I rebuilt and the wee BSA is running better on it. Thank you so much.
Very helpful hugh. Am thinking of experimenting with a 26mm version of this and opening my inlet port to suit as shown in RR. It seems like you were able to use the Amal throttle cable so an easy change. Good to know.
I have shelved for the time being. It did run but very rich. I did try other jets but got nowhere. It is a carb for a two stroke so was probably over ambitious. I will probably experiment again. Thanks for commenting.
Hugh hi and hope you are well.
Hugh can you tell me where you got the carburettor to air filter hose from and what air filter you are using. Also, on the oil front, do you put oil into the primary chain side where the magneto is as I don’t believe you have mentioned it - or leaks - from that area. As always many thanks Sid
Hello Sid
I was busy at something else on my computer when your message popped in.
The hose was purchased on Ebay - Straight Reducer Silicone Hose Coupler Joiner Stoney Racing Drop Down Pipe Turbo
Internal Diameter: 36mm - 32mm
Colour: Black
£8.85
Sold by:
silicone-hose-shop
The air filter is a foam filter purchased from AliExpress - 32mm 35mm 38mm 42mm 45mm 48mm Bend Elbow Neck Foam Air Filter Sponge Cleaner Moped Scooter Dirt Pit Bike Motorcycle RED Kayo BSE I purchased the 32mm as that fitted to the original concentric.
They are coupled by a piece of aluminium tube 32mm purchased on Ebay.
Yes there is oil in the primary chain case. Sorry not to be clear. You fill at the big slotted plug on the chaincase. The filler level is the front lower casing bolt. You fill till it drips out there. It doesn't take much. The primary chaincase is the only part that doesn't leak as far as I'm aware!
I put 20W50 oil in all three oil filled areas. So much for it being unit construction!
I feel really well. I hope you are too.
Kind wishes, Hugh
Hi Hugh, did you ever get the carb sorted?
Hello David I gave up on that carb. It was an interesting experiment. The carb fits well and I did get it to run. I could not get the pilot circuit right even changing jets. I am not wise enough. I should probably not have tried a carb designed for two strokes. It would have been very economic. Now I am rebuilding a proper Amal monobloc 375/34. That's what it was meant to have. Thanks for your interest. I may try to get the Mikuni copy to go again. It's low down my priorities.
Hi Hugh, really enjoying your BSA C15 videos, can't wait for the next one.
I have a question regarding your carburettor, it looks like you are running an Amal concentric, please can you tell me which one and what jets you are using. I asking because my Amal monobloc is not serviceable and I need to find a replacement. Many thanks and keep up the good work. Roger
Hello Roger thank you for your nice comments. This is the carburetor I have -
Amal 622 - L301
Current settings:
main jet 160
needle jet 106
needle 2 inscribed rings (Part No:622/124)
slide 3½
I am not certain it is perfect but it certainly runs and idles well. I hope that helps.
Many thanks for the info.
So Hugh, going back to the gearbox oil leak..was the bad helecoil you identified the source of the gearoil leak ? I noticed when you fitted the timing case, for the second time , you didn't fit the gasket ? or was it the camera angle ?
no amount of Blue Hylomar will stop it leaking if you leave the gasket off .
Anyway its all rather relaxing watching someone else work especially with the wonderful accompanying soundtrack of native bird song .
Kindest regards
Damian .
Hello Damian thank you for taking an interest and commenting. I didn't realise there was a gasket for the timing case. Maybe I'm being stupid. Is it between the crankcase and the inner timing cover of the inner timing cover and the outer timing cover. I am still leaking a heap of oil from the gearbox and I can't really see where from. This may be the problem. I would love if a gasket solved the problem. My other big leak is from the pushrod tube. I think the lower black seal. You sound as if you know what you are up to. Any advice. It would be great not to have my right boot coated in oil after a run. This leak was introduced by me on the rebuild. Some days I feel like chucking it into the burn that flows below my garage. Glad its relaxing for you. Very stressful for me despite the birdsong. Take care.
@@hughferrier5837 OK so I would say your oil is leaking not only out of the gear box onto the floor but also engine oil is leaking from the front section of the inner timing case to the rear , and vice versa, the 2 separate oils are also mixing together between the two cavities inside the inner timing case along the vertical edge of the sealing face, this would also explain why the oil tank level is increasing , the oil pump is simply scavenging and returning gear oil that's leaking through.
A little long winded i know but I hope that helps explain not only the reason but also the symptoms and more importantly the cure. Sorry but the timing side will have to come off again! leave the
Gearbox intact just ease the timing cover off, clear all that hylomar off , and order a full gasket set from 'Burton Bike bits' or 'Draganfly' and you will be able to re assemble it,
as you are becoming ever more proficient at doing, and suffer no more oil soaked right foot or dripping on the floor.
Do another video explaining what the cause was as there are no doubt many others who have made the same mistake.
We all live to learn Hugh ,
Look forward to the next instalment.
kind regards
Damian.
@@damiantuttle402 Thanks for advice Damian. I still can't see a gasket on the timing side even on Dragonfly's parts diagram. I am going to strip the engine again and lap the casings and covers on a flat surface. We will see. The main leak between gearbox and engine was due to the cork gasket missing at the selector shaft cover. I wish Honda engineers had helped!
@@hughferrier5837 Well yes I can see what you mean , after looking at a few gasket sets online there appears to be NO gasket for the inner timing case.
So apologies for the duff info .
What made me think there IS supposed to be one is this ...I've built 5 BSA A65 engines over the years and although a twin cylinder motor , the construction in terms if the crankcases and timing case is the same, however on A65s a gasket is used to seal the 2 faces , that between crankcase and timing case. Why on earth this is different on the unit singles I beyond me..utterly baffling no wonder they have such a poor rep for leaking ! maybe someone can enlighten us both as to why this is ?
So again Hugh..My apologies for sending you off in a tangent .
Please do a follow up video explaining how you resolve the issue and also why listening to people online who get their facts wrong is a bad idea !! hahaha
@@damiantuttle402 Damian you were trying to help which is an incredibly nice human response in this time of selfish living. A gasket would have been brilliant but as you say why they didn't use one when they did on the A65 we will never know. What is so sad is it is a lovely wee bike in looks. It is let down by cutting corners. I just want it to run nicely and go for long runs on a nice day. Take care Damian. Enjoy your bikes. I will try and put a film of the repair but I often get stuck in before remembering my camera. I am going to try Brian Alfonso's technique of dressing casings. His Chanel is superb.
Where's the action at
Sorry no action! My garage is too cold and not very tempting.Its minus three just now I may get brave. I may wait till Spring I am soft.
I think you would have had more luck fitting a real mikuni instead of a cheap copy there is a reason they are cheap.
@@gordonbriggs2345 I know but I'm a Scotsman. It was just an experiment and cost next to nothing. It's running happily on a rebuilt monobloc so that will do me.
@@hughferrier5837 Sorry hugh i did not mean you are tight scotsman its just that i have tried to go cheap in the past and it has cost me dear.i am just about to fit a 32mm mikuni to an enfield bullet at a cost of £150 so you may still have the last laugh.love your vids hugh your a bit like me out on my own in the wilds of wiltshire its great.ride safe hugh and god go with you .