strongest ifs

Post by **flyinwall** » Sat Jun 21, 2008 9:04 pm

what ifs vehicle has the strongest ifs setup?? i am just throwing around some ideas at the moment for a buggy. was thinking of putting ifs diffs front and rear for a 4 wheel steer with diff centre up high ( kind of like a cheap portal). was thinking of running around 35" tyres to if that helps.

Post by **clm434** » Sat Jun 21, 2008 10:23 pm

flyinwall wrote:what ifs vehicle has the strongest ifs setup?? i am just throwing around some ideas at the moment for a buggy. was thinking of putting ifs diffs front and rear for a 4 wheel steer with diff centre up high ( kind of like a cheap portal). was thinking of running around 35" tyres to if that helps.

If your after strength and big travel I'd probably fabricate it. Bit of 4130 and a bit more planning and probably a lil more dosh and you'll get what your after.

Post by **Slunnie** » Sun Jun 22, 2008 12:03 am

Is this like the rear of Antunacs 40?

or

http://www.pirate4x4.com/forum/showthre ... did=224988

Post by **1MadEngineer** » Sun Jun 22, 2008 8:04 am

get the rear center section from a late model pajero wagon rear irs. they are BIG and have factory lockers. NM,NP, 9.5" RG, IRS 33 35.5mm (1.40")

Post by **flyinwall** » Sun Jun 22, 2008 2:57 pm

Slunnie wrote:Is this like the rear of Antunacs 40?

or

http://www.pirate4x4.com/forum/showthre ... did=224988

something similar but i am not going to be spending big dollars on it as its only a fun buggy i was planing on welding the swing arms at a point and using it as a solid axle with a lot more clearance under the centre

Post by **pongo** » Sun Jun 22, 2008 6:23 pm

Skyline or Jag rear end. Not sure how the front will work though

Post by **flyinwall** » Thu Jun 26, 2008 8:55 pm

pongo wrote:Skyline or Jag rear end. Not sure how the front will work though

that is why i was after independant FRONT suspension so i could do 4 WHEEL STEER buggy

Post by **-Scott-** » Thu Jun 26, 2008 9:04 pm

Look at adapting any IFS hubs/steering knuckles to custom control arms and Pajero IRS diff/CVs?

Post by **Gwagensteve** » Sat Jun 28, 2008 7:08 pm

Hummer (H1/ HMMWV), 100% the strongest hub/arm/knuckle setup available- up to 5.5 ton GVM.

Same hub used front and rear.

Steve.

Post by **SIM79** » Sat Jun 28, 2008 8:41 pm

gamma goat axles

Post by **Gwagensteve** » Sat Jun 28, 2008 10:14 pm

I think you'll find there isn't a lot of gamma goat in that except the centre section.

I'd still say H1 is stronger than Gamma Goat, and the portal box is kinder to the shafts/angles, brakes - pretty much everything.

Does require at least 16.5" rims though unless you want to run silly scrub radius/offset.

PS those canadian snow cars are quite cool though, except they generally run open diffs.

Steve.

Post by **flyinwall** » Mon Jun 30, 2008 9:08 pm

now this is getting out of hand, as i was only thinking of local vehicles ie datsun 720, pajero, navara, hilux/surf etc. being as they are readily available and rather inexpensive, and i wont have to make up fancy tube links and everything else. i know i would have to turn the rear diff upside down but that is not hard to do. so which of the commonly available australian IFS would be the strongest ????????

Post by **chikoroll_** » Mon Jun 30, 2008 9:37 pm

just measure up the arms see which vehicle is longest, scrap the CV's replace with uni-joints, no cv boot issues anymore, uni-joints are easy and fast to replace if they break

if you do happen to run around measuring every vehicle, be sure to post up the details, would be a great source of information for the future

you can always brace the arms if they are a weak design

Post by **flyinwall** » Mon Jun 30, 2008 10:00 pm

i am thinking of welding the arm to a fixed possition and putting some coils on it for the suspension
here is a paintshop mockup

Post by **leehamescort** » Mon Jun 30, 2008 10:21 pm

Just cut down whatever diff you think will be strong enough, GQ, Cruiser, Hilux and shorten it, cut the tubes, weld them back on nie and short and then get the axles shortened to suit. Then its as strong as whatever you start with and only really costs a set of shortened and resplined axles. if your doing the rest cutting down the housing is a sinch.

But if you prefer a stock diff.

Toyota Hilux IFS
7.5" centre offset to the right
- inner axles are the weakest point
- outer CV's are about the same size as a gq but have a smaller axle spline into the hub
- Can take long side axle out and put short axle in both sides to centre the diff would be about 8"wide rather than about 14" wide with long axle one side.
- Inner cvs bolt to flange on inner axle

Early Pajero IFS
8.0" centre - offset to the right
- inner cv's are not bolted

Late Pajero IRS
BIG (9"+ I think)
centred diff (two short axles)

Navara IFS
7" or maybe 7.5" at best
These are a slight variation on datsun 180b or silvia diffs to suit IFS application.

Rear diff upside down - be carefull of getting oil to the pinion.

Good luck.
Leeham

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