Parabolic Leaf Springs: Are they worth it?
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- Опубликовано: 19 мар 2022
- Finally after a decade on the same springs Olboy is getting some new springs! But not just any springs... a full Terrain Tamer parabolic lift kit.
They have been kind enough to let me try out their newly released kit and see what I think!
Parabolics have so many advantages, being able to carry varying loads whilst maintaining a comfortable ride and being lightweight!
I will be running this kit for awhile to suss out what I like and dislike but so far I have no complaints! I have been able to do away with extended shackles whilst maintaining the same wheel travel.
Any questions please comment down below and I will get back to you!
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Terrain Tamer Parabolic - All Kits
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Terrain Tamer Parabolic - 75series Kit
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#parabolicleafsprings #terraintamer #suspension #toyota #landcruiser 
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Gday Danie, I’m a retired truck driver, I remember the first truck I drove with parabolic springs, I found them noticeable better then multi leaf and smoother ride in the front with and less “thump” through the steering column and they also stood up well cornering, there a good thing in my opinion mate, great video, cheers
yes I agree it's a hard thing to explain without experiencing it. definitely less violent over the harsh stuff. thank you!
With parabolics the shock becomes even more important, because of the extra rebound and bounce parabolics typically give you need a decent shock to handle the rebound. I’ve had them both on trucks (meritor 7.2t steer axles) I preferred multi spring over parabolic with super singles, as it didn’t want to wallow on narrow roads and on corrugations, but I used to run either big red roo shocks or kings remote res shocks.
@@SUPERTRUCKER166 I've found dobinsons to have a great rebound adjustment on their MRAs ties in really well with the range of adjustment in the high and low compression
@@DanieSimpson yeah they make a decent shock, but they don’t make shocks to suit the big gear (ie 6t offroad trucks right through to road trains) we typically use either red roo’s or kings with custom valving and stroke length. But this is for gear that spend most of their life on dirt
Never heard of parabolic springs until now! You’ve definitely got a lot of knowledge about 4wd’s! It’s great to see someone passionate about something and really enjoy doing what they love!
cheers!! still lots to learn but you gotta know these things when it's your job:)
Great informative video, looking towards some Parabolics after damaging my leaf’s on my 75 troopy yesty. 🤦🏽
I reckon Mars appreciated that run in the park ! 👍🏼
Parabolic springs have been a big thing in the uk for old series Landrovers. Improved ride lift and flex are all benefits unless you need to carry massively heavy loads
I think you did a great job of describing why leaf springs don't give flex. So far, I'm also impressed with the parabolics. I look forward to another review after more kms are on them. WOW, Ol Boy has come a long way. You have done a great job with it. DPA ENGINEERING
thank you really appreciate hearing that! always wonder if I'm explaining things well enough for everyone to understand!
Yeah i agree with David. Great laymen terms description. Cant wait to hear how the suspension goes in the 75.
@@chrisspies8123 thank you!
@@DanieSimpson You're most welcome. Enjoy your day
Hey Danie, been missing your videos, this one has come at the right time. Hope you well. Loving the OL BOY blanket.
thank you!! been missing making them!
ah that's so good to hear!
nice to see you again. looks great
Saving a lot of weight looking unreal can’t wait to see how it is after you test it off road thanks again great video
same thank you!
Just catching up with some of your vids - still love them (and Mars), you’re alright too ;-). I’m still torn on parabolics ….. so as always love your take and perspective on such things :-)
Very good explanation. I do not know the vehicle (except following you) they are not sold in the states but understand the leafy load characteristics. If you can save weight and still get a good ride loaded and unladen that is pretty sweet. Nice to see you and Marzy are well, he is always cute. Stay safe and healthy young lady.
that's it hey all about saving what you can here and there :) thank you!
I’ve seen a lot of positive reviews about the parabolic springs. Others say that if you have constant load, maybe regular leaf springs are the way to go. Look forward to seeing you testing the parabolics on tough tracks. Go Danie💪🏼🤙🏼!!
yes very true. my weight fluctuates depending if my rear canopy and rooftop are lifted off or on so suits my needs well
So glad your doing all that to a 75 I've had mine for 21 years and if they built them new again there would be a line up to buy . As a mechanic the new ones are trouble. Loved your video.
I appreciate your videos; you do a good job keeping them moving along crisply! And of course I love your dog, Mars. I’d watch your channel if it was only Mars. Really.
thank you!! yeah he is pretty good
Best, honest product reviewer around.. on ya danie.. keep up the good work..
i appreciate that thank you!!
Great stuff!! Be safe!!
Looking at getting a new set myself in future sometime I think I'm still on stock 😂 they sag to flat and like yours I get good flex and comfy to drive but just bottoms out heaps haha can't wait for some new stuff
Very interesting Danie, I have considered parabolic in my 76 series. Hence very keen to see the follow up videos.
we have designed our own custom leaf packs for our 76 :) they work so damn well and very comfy
@@DanieSimpson can you provide a link to your custom 76 springs?
@@cyclemoto8744 Part of our complete kit available from Jrace
This has come just when I'm looking to replace the suspension in my old BJ42 LandCruiser. I'll have to see what's available for it 👍
Hey , an awesome video you’ll created Danie
I had a 75 and it was such an awesome Ute to owm . I have a 79 these days ,
Deliberately haven’t done gvm upgrades etc so I have the options of
Things like Parabolics .
I’ll be keen to see your future feedback on them . I’d want 500 kg plus 2” also for rear !
Happy 4x4ing and keep safe mate !
thank you!! yeah I'm keen to see also!
same to you:)
Great video as always thank you 🙏.. i never owned a leaf spring jeep , so i have nothing to compare to but i do have coil overs on my jeep and luv the way they flex .. i have Bilstein suspension and lift in my jeep , just 2 inches tho 👍
sounds really comfortable! I'm jelly
The 75 is also able to flex through the chassis. Designed to do that from the factory.
@@DanieSimpson Proper. I had one years ago. Mine was the same. multi leaf packs are good for carting horses. Not much else 🤣
Great to see saving weight is on the top of your list keep spreading the word there’s way to many over weight rigs on the road👌🏽
yeah farr too many. but in saying that there really should be more public weighbridges
They look really good Danie, they do look weird though after seeing the others though, many many Moons ago i bought a 76 Ford Transit Van, it had one single Leaf in the Front, and about 15 in the Rear..
that's hectic!! but when you've got a load to carry fair enough haha
Love your channel love your content!!!!
thank you!
Great job 👍
nice to you and the 75 , we both look forward to your blog .....eh
thank you it's being written as we speak:) slowly getting better at writing
Very nice Danny love the video it was nice 👍
thank you!
So much good info in this video. I have a 79 single cab with a demountable camper on the rear tray. My weight is 3.5T fully loaded. Your videos inspired me to get the terrain tamer parabolics. I have the 500-700kg 4 leaf pack - they're brilliant, such a massive improvement. Only problem is the rear sits about 20mm lower than I'd like and the springs are *just* sitting on the rubber on the lowest leaf when loaded. So it's clear I'm under sprung. I can't decide if I should change to the 700kg+ 5 leaf pack from terrain tamer or add airbags. I like the simplicity and reliability of the parabolics but I'm concerned when the camper is off the 5 leaf will be too way too firm.. The airbags will give more adjustment between camper on and off but I'm not sure if I'll be overloading them and risk damaging the chassis at 3500kg. I'd really appreciate some advice. Add airbags or upgrade the leaf pack? Thanks Danie!
oh thats so awesome to hear they made an improvement!
if this is a VDJ79 at 3.5T we can estimate 1.5T will be your front axle load, leaving 2T rear axle load. Factory is around 1T, so you are nearly at +1000kg on the rear axle. Id definitely recommend a higher rated rear spring and possibly a set of airbags to level the ride height when loaded.
@@DanieSimpson Great advice, thank you!
Hi Danie, I’d love to put my Troopy on parabolics but can’t afford to yet. I used to own a Forward Control Land Rover 101 V8 which had factory parabolics. It had a ride and comfort level beyond anything I have ever experienced before or since...👍 PS - I’m currently running HD rear springs and have added aftermarket load levellers as I tend to move a lot if tractor parts and engines etc with it. The load levellers don’t really fit too well thanks to the parking brake cable location...
oh that is pretty cool! sounds like a pretty interesting setup already
Weird was talking to a man about his 1996 Troopie being to bumpy,l said you should of left the standard suspension on instead of putting heavy duty leaves on. Told him about how good parabolic would be best for him.
HEY!! GREAT TO SEE YA!!
howdy!
Would be keen to see an update on how the springs are going, especially how well they flex. Are you running your old dobinsons remote res shocks with them now? Cheers
will run this kit with these socks for a number of months before changing back to dobo. had no dramas so far and flex before and after photos are on my Instagram
Be interesting to see what u think of the terrain tamer remote reservoir pro shocks if u try them as im looking at giving them ago next year!!
Great review Danie, Olboy is looking the goods with that canopy setup!
I'm looking at throwing a set of parabolic springs under my '85 HJ75 trayback as well but i have a light crane fitted on the back so not sure how parabolics would handle uneven side to side load?
thank you! hmm I can't say I have any real world examples of that but I have great stability offroad side to side. one side is heavier than the other due to spare tyre and fridge but I can't say I know how they'll be with a crane
awesome mod Dannie
when you see your truck go past in the background and realise i drive past that shop everyday
hahah it is a pretty busy street:)
Hi Danie, I have the TT 500-700Kg Parabolics in the79 single cab. Heaps better ride and can hold a reasonable amount of weight but not what they advertise. Your vehicle should sit the same as a brand new ute from the factory (Cab Chassis only) with 500kg constant load. ie. tray canopy gear etc... It would interesting to see if there 75 series springs hold up. I still think they are a good spring alternative and wouldn't go back to the heavy 11 pack i ran previously.
can't say we've had a drama with the 79 ones installed here, they hold up to weight really well.
I’ve been thinking about putting parabolic leaf springs in my 79 for a while, this may have convinced me😅😂
have put a few into 79s! such a clean look and handle brilliant
Worked on a farm the 79 there would carry 1000L of water on the back 6 months of the year. The parabolics in it handled it like a champ and the car barely drove any different
Well now I wanna do them more 😂
Awesome video
cheers!
Hi Danie Nice Video Thanks again
cheers:)
such a cute doggo
Awesome 👏
Awesome as ❤
thank you😊
I've never seen such a good condition 75 series, it looks restored, all the ones i have seen are usually old farm or beach fishing utes.
certainly far from restored and lots of work to do and rust and dents to fix and a repaint before he's good condition
So excited to disover your channel. I've been an IG follower for years. I have a 2nd gen Xterra I'm considering parabolic springs for, the weight savings is very attractive but I don't carry much weight at all these days. Do you have any updates on the articulation qualities of the parabolic leaf pack?
oh awesome thank you so much for jumping over and checking out my youtube! they have slightly more down travel than my old leaf springs but dont completely flatten out so loose a bit of up travel but thats good for me keeps my tyres away from my inner guards/chassis rail.
@@DanieSimpson Alright, thanks for the info and a quick reply, really appreciate it!
Looks good. Twenty first century versus eighteenth century (or earlier) technology has to be good.
I wonder over time how the leaf packs will stay up compared to a bigger pack
yes I'll also be intrigued on this, they seem to last great on the 79s:)
Any chance of a long term review?? please!
Alternatively, instead of parabolics you can run longer leafs. Rides really well and has more available travel/flex, am able to comfortably drop a 35 past the sill in the front on my 75.
yes there are many options for leafs hence why the 76 has custom leafs and not parabolics. not all options suit everyone.
Danie, I couldn't tell for sure from the video if you used any wedge shims for adjusting front axle caster angle or cross caster effect for the crown of a highway. Everything one adds or subtracts as per length of shackle also tips the angles of the diffs and cause caster changes as well as ujoint angles front and rear. Anyway just wondered how that all went and if you think you will need to do some fine tuning with wedges for steering/handling or joint angles. I am blown away by just how much you shed in weight of spring material, that is almost worth it in itself.
yes I run castor wedges which has been spoken about it previous videos
@@DanieSimpson I must have accidentally missed watching one of your video's, this isn't good ! LOL
Great video Danie! Thinking about putting a set in a new Hilux SR5.. only to increase lift and ride comfort though 😉 have you had any feedback from Hilux owners about the parabolics? 🙏🏼
haven't had any complaints yet! but jump on the forums someone will have some first hand experience:)
Thought about doing a coil conversion? But it’s lookin the goods! 👌🏽
not worth thr time and money on such an old vehicle. new 70 series will get one
I would also recommend a polly air airbag cradle kit
have seen those but never in person in an offroad environment
Wondering how these parabolic leaf springs would go with the modern soft ride shackles. 🤔
Mine arrived the other day, installing on the new dmax 2021 :)
oh that's awesome!
nice explanation video !
awesome to hear thank you!
Hey there love your videos. What brand and size tyres you have on your rig . they look awesome
Nitto and 33s:)
Its been a short minute dani! We've missed y'all
I know hey!! been a busy gal with work! but home soon:)
@@DanieSimpson Thank you for your service and safe travels home please! We need ya !
@@SHOCKcustoms appreciate that:)
Hey Danie
love the cruiser and am interested to see long term review of the parabolics.
What bar is it that you have on the front? Looks awesome
cheers! bar is second hand and was custom made
@@DanieSimpson have you ever looked at u bolt flip kits? I’m researching atm not finding much info.
@@damo8790 nah not something Ive ever been interested in unless I was going to custom make a top hoop for my shocks otherwise your just losing shock length for a bit of ground clearance.
G’day Danie, Do you have a video with a walk through if your Landcruiser/Camper? So is the 76 yours as well? Your doing well!
yes full playlist on my channel of the Rear setup and the 76 is our R&D vehicle for new products.
Quick Q, would you run, or would you be able to run , 2 inch extended shackles with the parabolic springs? Would be interested to find out.
not recommended to run extended shackles with parabolics. I have more travel with standard shackles compared to extended shackles on my old springs and now my vehicle has legit insurance too
Thinking of going for the parabolics looks like they are the go, what size lifted springs were they and what shocks do you run? Cheers
link is on this video
Good doggy !
wow!
that's a huge weight reduction!
hope it proves-out, that would be a great improvement.
great vid mate keep up the great work terrain tamer parabolic springs are very well tested by allan gray
yes love their videos!!
Dam I miss my old 75. I all ways got told it did not matter what you do to them they are still a boat Anchor and it will sucks the the juice.On another note is they any good places to go 4wding over in Townsville? Have been informed they are all closed off or if you get Caught you will cop a fine.
eh I don't mind it. they aren't fast but reliable and gets the job done.
unfortunately that's correct about 4 good tracks closed. I recommend Mackay, some awesome spots down that way
Hi Danie,
Do you have anymore feedback on these now you have had them on for a while? I do like the idea of picking up 200+ kg.
How do they stand up to the continuous load?
so great. I haven't removed my canopy or roof top so had continuous load for almost a year. no sagging at all. I've thrown my old leafs out and I've bought the same springs for my 60 build now too.
I have reinstalled my Dobinsons remote res shocks though as they all time favourite shock.
Hey mate . I just wondering did u remove front sway bar?
Just bought s 75 troopy. Gonna run parabolic with bp51 shocks. Let's see what happens
yeah nice!!
i love olboy such a good rig olboy is the baddest truck on leafs
oh thank you!
Danie, did you have any difference in ride height at the front? I have looked at getting the parabolic for the front to soften the ride in simple terms are they more comfortable?
going from extended shackles to standard shackles is what changed the ride height but only by about 10-20mm and achieved more travel out of the suspension. So a much safer and legal ride with better offroad capabilities:)
yes if you went from a standard multi pack to a parabolic you would definitely notice the difference. I noticed it most on offroad tracks, much comfier and more spongey feeling. The footage right at the end was an example.
@@DanieSimpson thank you it looks like some retail therapy is in order. I think I will stick with the Old Mam Emu shocks they are not that old. One other question what type of radiator is in you toy?
@@phillip.9524 just an aftermarket brass copper replacement
I rebuilt a 1991 hzj75 ute for my daughter a few years ago, 650,000 plus on the clock, custom steel tray,33 inch claws ,turbo ( mild tune ) . Original springs !!! I'm very interested in what you think of these springs. Do you still run a front swaybar ?
what I think about them is included in the video and if your vehicle came with a sway bar it will need to remain in unless undergoing an engineering design and passing the relevant testing
how would parabolics work with air bags. so you could still get a nice ride and flex. do u thimk with air backs they would be ok to tow with?
I have run airbags for years to assist in maintaining ride height. had no issues with them and towing but I don't have them at high pressures
Hello guys, I need some input. Will these parabolic springs improve my ride comfort, right now it’s horrible with 11springs rear packs on a 2018 Landcruiser 79. I do not need to carry any weight, only want a better ride.
will be a noticeable difference
They are definitely worth it
How's the new suspension holding up some months on? Keen to see your thoughts on it all. Weight saving is the most appealing for myself also. 👌
Apologies for the delay! Love it, threw my old springs out and got another set of parabolics for the 60 build!
@@DanieSimpson
Have you tried dropping the thickest/shortest leaves on the non-parabolics for comparison?
@AhilMohan no comparison at all between the parabolics and a multi leaf spring. my multi leafs had already had packs removed and been reset not even close to comparing with the parabolics
I’m trying to get a 75 series for my first car my dad has an 1hz while his mate has a 1hzt so we’re trying to see how much he’s going to sell if for any recommendations for first “upgrades”
front locker if you plan on 4wding
my cousin is a RAAF sarg in ASOP, recently transfered to adelaide, she is also going somewhere for 8 weeks. pitfa :)
ah yeah very nice!
I got a 1981 Hilux, the leaf springs both front and back are dead flat, not sure if they are supposed to be though lol
hilux are spring over and operate and can sit differently to spring under vehicles. but can always measure your vehicles ride height compared to factory specs and should tell you if they're sagged or not
How much hight did you lose going from extended shackles to standard length Ruth this kit?
Lost about 30mm in the front. Gained about 30mm in the rear because of how sagged my rear springs were.
Do they flex alright I just bought a 75 and it dosent flex At all
So what was the over all size roughly after new one in 2 inch on 33 or 3 inch on 33 ?
what size are you chasing? Terrain Tamer only offer 50mm parabolic leaf springs and I have both 35" and 33" tyres that i rotate
One of my patrols has 3 leafs in the pack 😂
Interesting they don't come with Anti inversion shackles?
like I said in the video the kit does
your the best
cheers!
I think you will find the correct term for that sink ....is a night head....
I just wish they made parabolics for my hj60!!
sameeeeee!
leaf is life aye
something like that🤣
Looks like you didn’t grease bushes first ?
correct:) because you do not grease the bush when installing into the spring.
I'm trying to sell my old 75 series the brings were too harsh on my back so bought an 80 series but yeah good Ute's but to get it where I'd be happy I can't justify the money
ah yes 80 would be much comfier!
Without air in your airbags or limited air anyway. Do they sag much with the canopy setup. I have a old 75 and have multi leafs. Probably are as old as yours. I've been looking at parabolic for ages but with a heavy steel tray aswell as 2 big toolboxes packed with tools gear etc. I'm worried they will sag and not hold the load and it'll look like I tried getting the stupid cali lean going. Cheers mate
the video at 9mins where I show it from the side is with no air in the airbags. I usually keep about 5-10psi in them usually though. will all depend on the weight but long as you get the correct rating for your weight should be an issue with sagging but I will definitely be seeing that with mine
I have an 82 toyota hilux and it has 36 inches of flex on leaf springs
wicked!
@@DanieSimpson thanks. It's using stock leafs. Stock rears in the front and stock chevy pickup leafs in the rear
Did u end up putting the extended shackles in it?
I have three different sets of shackles that I swap out depending what I'm doing
Do they flex better the the old ones?
flex isn't the best word. I have more articulation/more wheel travel in the rear. Front I will be able to get more out of
Damn I’d put a ring on it ! Cool chick 🤙🏻
hah cheers!!
What engines in her n what year is it?
1hz
1991
Is it a 2 inch lift
my ride height is adjustable due to airbags
How do I get Terrain Tamer 2 send me a free suspension kit. 😭😭😭😭
Keep up the content Danie.
We work closely with them at my work so it helps knowing the right people and being trusted with honest opinions :) thank you can do
X Hello hello from Newcastle
why hello what did you guys do with the sunshine haha
Who’s workshop Danny?
our workshop