Page 1 of 2
New RA suppention set up.
Posted: Mon 07 Nov, 2016 10:07 pm
by porter.8.luke
I'm currently working on the front radius arm links and have also been reading alot about RA setups. So i would like to see if i have something that will work.
For your concideration. The rear arms are over the housing and have a 3.5° inclination to the chassi. The fronts are under the housing and have a 2° inclination to the axle. The plan was to keep some waight (under power) on the front axle and keep the front from diving under braking.
The front RA are triangluated 16° from parallel and the rear arms are around 7.5° with a wats link. Let me know if I'm in the ball park of this working.
Cheers.
Re: New RA suppention set up.
Posted: Tue 08 Nov, 2016 12:58 pm
by gwagensteve
Can you give me the separation at the chassis end and axle end front and rear?
-all sounds good but rear roll stiffness might be a bit higher than ideal.
How is your roll axis looking (front to rear)- this can be a bit of a struggle and can promote oversteer if the roll axis is positive at the rear (like a vitara) if you're running arms under the axle in the front that implies plenty of compression travel which will limit how high you can get the front roll centre.
Mine is very positive to the rear and it makes the back of the car fidgety at speed, but improves high angle stability and tyre clearance.
Re: New RA suppention set up.
Posted: Sun 13 Nov, 2016 2:41 pm
by gwagensteve
Re: New RA suppention set up.
Posted: Mon 14 Nov, 2016 2:51 pm
by porter.8.luke
You are a bad man.
Re: New RA suppention set up.
Posted: Tue 15 Nov, 2016 9:02 pm
by gwagensteve
Re: New RA suppention set up.
Posted: Wed 16 Nov, 2016 5:16 pm
by greyghost
ooh i want those for full time use in my rig, i'd even get rid of my Krawlers for a set
Re: New RA suppention set up.
Posted: Wed 16 Nov, 2016 9:29 pm
by lbzook
Why do you do this to me!
Re: New RA suppention set up.
Posted: Wed 16 Nov, 2016 9:54 pm
by gwagensteve
greyghost wrote:ooh i want those for full time use in my rig, i'd even get rid of my Krawlers for a set
It's crossed my mind. Finding rims to exploit the lightness is an issue. They'd also be less than ideal in winter without grooving.
Re: New RA suppention set up.
Posted: Thu 17 Nov, 2016 3:26 pm
by greyghost
yes its a pity Marsh stopped making those carbon fibre rims.
and currently i can't find anyone that makes deadlock rims in carbon fibre, i guess the speedway boys just destroy them too quick on the concrete wall.
Re: New RA suppention set up.
Posted: Thu 17 Nov, 2016 5:43 pm
by gwagensteve
It's a tough situation.
They really need a forged 15X5.5 with a beadlock like a BTR buggy rim or similar, but they're all wide 5 VW pattern (5 on 205mm). I've overlaid 5 on 5.5 over 5 on 205 and they don't really get along (I thought it might be possible to make an adapter.)
I've spent a while looking and I can't find a light 15X6 or similar rims.
There is a wide 5 speedway pattern which could be made to work with an adapter but I can't find the, under 15X8
Steve.