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Re: Extended spring perches?

Posted: Thu Mar 12, 2015 10:39 pm
by timwilks13
mike harris wrote:Yeh I snapped a full leaf spring, in half, half way down the spring, springs where 6 years old. You can't blame wrap on that, would have to wrap lol which it doesn't.

Anyway anti wrap bars are a great idea, all cars need them. Nissan and Toyota and every other manufacture that doesn't use them, should?....

Sorry lads ! :)
Sorry mike I don't like arguing but your ignorance is getting annoying. You don't want to run an anti wrap bar then that's cool, but don't argue against logic with "I've never had a problem". Its fine you don't see that you get axle wrap, but when people want pros and cons regarding an issue, if you can't construct a logical reason you don't need one, then leave it be.

Everyone gets axle wrap. You get axle wrap.

Re: Extended spring perches?

Posted: Thu Mar 12, 2015 10:47 pm
by NylonAdmiral
ScottieJ wrote:Plus hilux's actually have a bar on the front axle to stop wrap during heavy breaking.
Ahh that's it. I was racking my brain trying to remember one of the vehicles they came on as standard.

Re: Extended spring perches?

Posted: Fri Mar 13, 2015 10:30 pm
by mike harris
If your that annoyed by my opinion you need to get a life chap.

Re: Extended spring perches?

Posted: Sat Mar 14, 2015 8:40 am
by timwilks13
mike harris wrote:If your that annoyed by my opinion you need to get a life chap.
Not annoyed by your opinion, just don't like people giving incorrect and bad advice.

Re: Extended spring perches?

Posted: Sat Mar 14, 2015 9:04 am
by mattmiles
I've had great experiences with my anti wrap bar and would very much recommend one. Even with YJs (that I purchased new!), on a SPOA setup, wrap is an issue on the road. The rear end now feels more controlled/planted under acceleration, and should all help increase the life of the springs. :D

Matt

Re: Extended spring perches?

Posted: Sat Mar 14, 2015 9:12 am
by SierraDan
Now that is a different take on a wrap bar!

Re: Extended spring perches?

Posted: Sat Mar 14, 2015 9:54 am
by d_r_1989
You got any more pictures Matt?

Re: Extended spring perches?

Posted: Sat Mar 14, 2015 9:56 am
by Anton
Matt - that looks a lot like the anti wrap bar that I have. In my head.

:lol:

How well does it work without the shackle? I don't fully understand the need for the shackle, I was thinking of building a setup that doesn't have one.

But I should probably find out why people that have awb's have shackles/don't have shackles before deciding that!

Re: Extended spring perches?

Posted: Sat Mar 14, 2015 10:46 am
by mattmiles
SierraDan wrote:Now that is a different take on a wrap bar!
I believe it's known as a Bam Bar matey! ;)

Works very well Anton, but are you referring to the shackle in this design? This is very different to mine, and slightly more complex.

Image
d_r_1989 wrote:You got any more pictures Matt?
Few more pics for you. :D

Matt

Re: Extended spring perches?

Posted: Sat Mar 14, 2015 11:41 am
by ScottieJ
Anton as the springs flex the position of the axle changes, during compression the spring flattens the axle moves backwards slightly, further away from the chassis mount. During droop the spring arches more and the axle moves forwards. This is why a lot of people fit the shackle design to allow for this movement.

With the bam bar design you can get away without a shackle as long as you get the geometry of the upper link correct, I.e. The angle and length. otherwise it could actually force the axle to rotate slightly during flex, I.e force the pinion to tilt down during droop.

Adam did a mix of both designs so that axle wrap was limited instead of being completely stopped.