anti wrap bar who can make one

Post by **31zook** » Tue Jun 23, 2009 7:28 am

Thats clever i never thought of that.

Post by **brendan_h** » Tue Jun 23, 2009 4:28 pm

31zook wrote:Thats clever i never thought of that.

though of what

Post by **Guy** » Tue Jun 23, 2009 5:22 pm

DieselZook wrote:
joeblow wrote:manufacturers work out final drive ratios based on desired engine rpm etc to tyre size. when this is deviated from, e.g larger tyres on stock gearing the forces placed on the rear diff and components increases. basically the tyre becomes harder to rotate causing components such as leaf springs and bushes in controls arms to flex more and be placed under more stress. when tyre size is increased and diff ratios fitted to correct it the stresses are pretty much brought back to standard (working with the manufacturers specified weights).
I admire your work joe, but I can't agree with you here. I agree that increasing tyre size does increase the required wheel torque to produce the same forward force. However the torque on the axle housing is always equal in magnitude to the torque at the wheels, just in the reverse direction.

To put it another way, it does not matter how small you make the pinion, the force it has to apply downwards on the ring gear, hence the reactionary force it applies upward on the carrier is the always the same for a given wheel torque. All that changes is the required input torque at the pinion. (this will change the side to side torque ie the reactionary force that tries to lift the right wheel off the ground and push the left into the ground due to the rotation of the tail shaft, but this force is minimal and is not what bends our springs)

I'm willing to be corrected if I have missed something.

In short, every action has an equal and opposite reaction ...

Post by **redzook** » Tue Jun 23, 2009 5:23 pm

track bar looks good

for those that think the trackbar with a shackle at the end dont work have no idea

joe blow dosent matter what diff ratio you have if a tire is jammed in a rock it is still goin to wrap up the springs exactly the same amount to get it to start to move

if you can some how prove me i would be intrested to hear it
as that is the way i look at it

imo the lower the diff gears(higher numerically) the less stress it puts infront of it (transfer ,gearbox)

and the more stress it puts on behind it (axles)

Post by **brendan_h** » Tue Jun 23, 2009 5:35 pm

redzook wrote:
imo the lower the diff gears(higher numerically) the less stress it puts infront of it (transfer ,gearbox)

and the more stress it puts on behind it (axles)

yup i agree 100% with you on that.

Post by **NIK** » Tue Jun 23, 2009 5:36 pm

Time will tell hey, the only probs Ive had before when running a very similar bar was without the "twist" joint in it it bound up too much.
I really cant follow the gearing thing, do you mean as long as the "standard" tyre diff gear ratio is followed axle wrap will be limited? Does this take into account gearing before the diff?
Its an interesting thought but I cant see how correct diff gears can stop the axle rotating under acceleration?
Nik

Post by **brendan_h** » Tue Jun 23, 2009 5:52 pm

NIK wrote:Time will tell hey, the only probs Ive had before when running a very similar bar was without the "twist" joint in it it bound up too much.
I really cant follow the gearing thing, do you mean as long as the "standard" tyre diff gear ratio is followed axle wrap will be limited? Does this take into account gearing before the diff?
Its an interesting thought but I cant see how correct diff gears can stop the axle rotating under acceleration?
Nik

diff gear wont fix. its also spoa so got to take that into acount to.

i would like to know what tube people are using for there slip and twist. as i would like to start making mine ASAP im running out of thing to do and it only making me stay on the computer

Post by **alien** » Tue Jun 23, 2009 6:54 pm

all this talk of theoretical trac bars and yet anyone with good fab skills could make the style i have on mine (oztraks / caltracs) and be guaranteed zero spring wrap and zero binding...

Post by **brendan_h** » Tue Jun 23, 2009 7:11 pm

alien wrote:all this talk of theoretical trac bars and yet anyone with good fab skills could make the style i have on mine (oztraks / caltracs) and be guaranteed zero spring wrap and zero binding...

slip and twist. as far as i know and read there are no drawbacks

i need to know whats the recomended clearance in the 2 pipe should be. i would like to start getting everything together asap.

Post by **31zook** » Wed Jun 24, 2009 5:27 am

alien wrote:all this talk of theoretical trac bars and yet anyone with good fab skills could make the style i have on mine (oztraks / caltracs) and be guaranteed zero spring wrap and zero binding...

If im corect your wrap bar goes under the hilux springs on your truck. It looks like a top idea and would work no worries but, what would stop me from doing it is clearence. I think that if your (in theroy building control arms) Why not stick them on the actual diff up a bit higher?

PS alien's truck looks freaken sick with the front diff 6" forward

Post by **alien** » Wed Jun 24, 2009 9:22 am

Yeah mines under the leaves... clearance has not been an issue so far - they dont use any more space than a SPUA zuk.. and because theyre right up next to the rim/tyre they dont hit the ruts etc.

Post by **brendan_h** » Wed Jun 24, 2009 2:16 pm

ok i am now getting all materials together. found the pipe. ive got a few questions

1.what bushes did you use on the axel. and what size pipe?

2.is it best to keep the bar as long as posible or is shorter better?

3.will the angle/steepness of the bar effect anything?

4. how strong is that crossmember with the 2 body mounts on?

Post by **Guy** » Wed Jun 24, 2009 4:48 pm

brendan_h wrote:ok i am now getting all materials together. found the pipe. ive got a few questions

1.what bushes did you use on the axel. and what size pipe?

2.is it best to keep the bar as long as posible or is shorter better?

3.will the angle/steepness of the bar effect anything?

4. how strong is that crossmember with the 2 body mounts on?

As long as you can possibly fit and as flat as you can get it.

Post by **brendan_h** » Wed Jun 24, 2009 9:23 pm

yer thats what i though.

ive got everything eles sorted now i just need to know what to use as bushes

Post by **jimbo jones** » Wed Jun 24, 2009 9:40 pm

brendan_h wrote:yer thats what i though.

ive got everything eles sorted now i just need to know what to use as bushes

I'm using 80 series panhard bush but thats only course I got some old pan hard lying around

Post by **brendan_h** » Wed Jun 24, 2009 9:43 pm

yer. i would like to use sierra bushes. but i cant find any pipe lying around that it will fit into

Post by **Guy** » Thu Jun 25, 2009 12:31 am

brendan_h wrote:yer. i would like to use sierra bushes. but i cant find any pipe lying around that it will fit into

High lift jack handle ... may as well use it for something ...

Post by **Hybrid** » Thu Jun 25, 2009 9:19 am

You can get pipe that suits second gen (probably all non ifs) hilux bushes perfectly Brendan. I know as I built new spring hangers for my lux back in the day.

Post by **brendan_h** » Thu Jun 25, 2009 5:58 pm

Hybrid wrote:You can get pipe that suits second gen (probably all non ifs) hilux bushes perfectly Brendan. I know as I built new spring hangers for my lux back in the day.

i would like to use some 32NB pipe. the ID of that would be about 35mm for med and 33 for heavy. time to start asking around i think.

just thinking about it i had an old sierra bush i tryed and i couldnt get it to fit on the pipe i had. might have to measure it all properly and get some heavy tube that it will fit into i think.

Post by **NIK** » Sun Jul 05, 2009 6:58 pm

Just an update on my (dodgy) traction bar.
Use it today and was finally able to bump obstacles that require momentum

After a nasty hole that saw full throttle launches my springs are still intact...cant say the same for the hilux drive shaft!!

Nik

Post by **31zook** » Sun Jul 05, 2009 7:25 pm

hehe glad that dodgy traction bar held up...

good work on the full throttle wheel stand just before the bang

Post by **brendan_h** » Sun Jul 05, 2009 7:39 pm

holy fuck dude! thatsa awesum!

Post by **jimbo jones** » Sun Jul 05, 2009 10:37 pm

Fark did the shaft hit a rock at the time it bent
I've twisted one like a corck scew and snaped it but noting like that lol at least you touque bar held up good work

Post by **NIK** » Mon Jul 06, 2009 5:33 am

I dont think it hit anything I had a look and there was nothing sticking up much or any scrape marks.
Nik

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anti wrap bar who can make one

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