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hinged radius arms

Posted: Tue Feb 17, 2004 6:45 pm
by killalux
wat do you guys think of using something like this in the front of a hilux/bundera coil conversion to eliminate binding. i know the yanks use them on broncos and such for more wheel trave.
my only concern would be strength considering that only one controll arm would be stopping the diff rotating, instead of two.
it could be pinned for road use so that isnt really an issue.
cheers
steve

Posted: Tue Feb 17, 2004 8:15 pm
by RaginRover
Ask strange rover about it - according to him it will make you already unstable vehicle even more unstable

Tom

Posted: Tue Feb 17, 2004 9:03 pm
by Strange Rover
been there done that would never do it again. Not a strength issue but mainly how it handles off road. Basically all the drive and braking loads are taken by the arm on one side and this levers that side of the rig up and down. Can be really scary on the limit especially going steep downhill.

Sam

Posted: Tue Feb 17, 2004 9:12 pm
by killalux
oh ok then, sounds like a bad idea, might have to look at somethin like your slotted bushes

Posted: Tue Feb 17, 2004 10:10 pm
by spazbot
have a look at what dirtpigs has done with his std nissan arms, it works really well off road

Posted: Tue Feb 17, 2004 10:24 pm
by hypo
spazbot wrote:have a look at what dirtpigs has done with his std nissan arms, it works really well off road


woodnt this give the same effect tho ??

Posted: Wed Feb 18, 2004 6:39 am
by Wendle
hypolux wrote:
spazbot wrote:have a look at what dirtpigs has done with his std nissan arms, it works really well off road


woodnt this give the same effect tho ??


should be much more subtle, as the fulcrum length is shorter.

Posted: Wed Feb 18, 2004 3:10 pm
by modman
some guys use the hinged arm in the states and swear by them (rovers)
one guy in the lrocv gives his 100" and hinged arm a hiding and it seems to work.
i believe there is a difference to which side you should hinge, so the motor torque doesn't unload that corner causing the car to rear up in the worst case scenario.
its not an expensive mod, give it a go, nothing to lose!!!
sam, you got any thoughts which side to hinge??
i get full travel out of a toy 80 series shock with sams bushes, thats good enough for me!
if i had a trail only truck, i would give it a go.

david

Posted: Wed Feb 18, 2004 5:29 pm
by Strange Rover
You should do the LHS so that it counteracts the drive shaft torque - but this will produce some funny drive shaft angles. I did the RHS.

Biggest drama I had was under brakes on very steep down hill stuff. The rig would lift the RHS rear tyre very badly and want to tip the rig over. Really scary stuff. Once I got rid of the hinge (locked it up) and drove down the same tracks it drove very easily and comfortably.

Sam

Posted: Wed Feb 18, 2004 8:31 pm
by killalux
modman wrote:some guys use the hinged arm in the states and swear by them (rovers)
one guy in the lrocv gives his 100" and hinged arm a hiding and it seems to work.
i believe there is a difference to which side you should hinge, so the motor torque doesn't unload that corner causing the car to rear up in the worst case scenario.
its not an expensive mod, give it a go, nothing to lose!!!
sam, you got any thoughts which side to hinge??
i get full travel out of a toy 80 series shock with sams bushes, thats good enough for me!
if i had a trail only truck, i would give it a go.

david


true, i might be worth a go, plus its not hard to throw one pin back in to lock it up when drivin steep shit, or i could just design some sort of 5 link.

Posted: Wed Feb 18, 2004 8:36 pm
by -Scott-
I was just thinking about trying to free up the rear end of the Paj with something like this.

I notice Killalux is talking front end, and Sam is talking about lifting rear wheels.

Does the end make a difference?

Scott

Posted: Thu Feb 19, 2004 8:12 am
by Area54
NJ SWB wrote:I was just thinking about trying to free up the rear end of the Paj with something like this.

I notice Killalux is talking front end, and Sam is talking about lifting rear wheels.

Does the end make a difference?

Scott


Don't you already have a 4 or 5 link in the rear of the coil Paj?

Lifting rear on descents.

Sorry to say, I have yet to see a 5 link (as in front modified GQ or 80) or other quirky mod (hinged radius arm) to be of any serious advantage in either a competition environment or trail rig, other than to create a flex queen. I get to film hundreds of different rigs and get to watch the footage over and over again, and what stands out is the driver ability and vehicle strength. Now DE-Hyro is another thing altogether... :lol:

Posted: Thu Feb 19, 2004 9:19 am
by -Scott-
Area54

The rear end of the Paj is two trailing arms and a panhard rod. I've not looked into it too far, but I think Frank recently posted about a 4 link conversion in Japan.

I agree that going down hill will be hard to keep rear wheels on the ground - without weight over the axle, neither spring will compress, so no articulation.

Cheers,

Scott

Posted: Thu Apr 01, 2004 1:20 pm
by tony cordell
BTTT
for James to see and decide

Posted: Thu Apr 01, 2004 1:45 pm
by GRIMACE
DO NOT DO IT