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#1
rear wheel camber
boofhead
Posted on: 2006/8/11 11:16
got a question i'm hoping to get a little advice on .....
how to acheive rear wheel camber on a live axel ??? bend the housing at the centre any positives or negatives ?? any advice or ideas will be welcomed with open arms
#2
Re: rear wheel camber
Freak
Posted on: 2006/8/11 11:28
Bending the housing is the only way. Positive is is sticks like you know what to a blanket. Negative is that it loads up the axles in the spider gears. Actually acts a little like a LSD (more torque to both wheels). Good thing but wears out gears and splines.
Alot of top racecars throw independent rears for live ends. The key is to keep it flat in the rear.
#3
Re: rear wheel camber
datman55
Posted on: 2006/8/11 14:38
Bend the housing or floating hubs........
Bend the housing = $$$not much Floating hubs = approx $3,500 floating hubs wont load up the gears though, as the axle enter the centre at the correct angle. Also, floating hubs will give adjustability through shims to tune the required amount of camber in to the car.
#4
Re: rear wheel camber
PIGDOG
Posted on: 2006/8/11 14:52
yeah adrian, its worth $3500
especially with the total lack of road holding your car has
#5
Re: rear wheel camber
Rallytwit
Posted on: 2006/8/11 15:52
I don't know what your doing with your car that you've deemed it needs camber in the rear but I will throw this out. 90% of my running these days is with the track days I instruct at Porsche Club and a VW Audi group. From this I can tell you my car has no problem keeping up with all those German sports cars and I'm routinly glued to the back bumpers of Lotus Elises mid-corner. The suspension set up is pretty much straight out of the prep manual printed here in the tech section. The only time the back end is unruly is when yours truly milks a set of tires one weekend to much.
As mentioned here it can be done properly for the right amount of money but for $3500 you could probably install an IRS rear end which would allow you to adjust the camber and put some toe in the rear..........I'd go for IRS if your serious , beam axles are pretty much an abomination. There main advantage is they are cheap and tough. Tom
#6
Re: rear wheel camber
nzdatman
Posted on: 2006/8/11 23:56
It's not uncommon for a datto to have a little bit of negative on the back axle anyway. My sunny had -2/3deg on the left and -1/3 on the right at the last wheel alignment.
Unless you're building a sports sedan or something I wouldn't lose sleep over rear camber.
#7
Re: rear wheel camber
boofhead
Posted on: 2006/8/12 0:17
not loosing sleep over it yet
about to get a H165 fully rebuilt with one of topgears lsd's in it and thought i'd enquire while it was all apart. $3500 it's a little more than i'd spend for the benifits i'd gain. i'm running out of things to do to spend money on it without going new motor and the likes so figured i'd concentrat a little more on the handling to get the most out of the A12 so if bending the diff loads the bearings would it effect the diff centre ??
#8
Re: rear wheel camber
Daveman
Posted on: 2006/8/12 2:34
From what I understand, bending the housing is just using the little bit of clearance between the axle and the diff centre SPLINES and using the splines as a sort of a uni joint. Even with the very slight angle I can imagine you would put a lot more wear on your diff centre and axles.
#9
Re: rear wheel camber
b310gx
Posted on: 2006/8/12 2:45
would it be too hard to put a slight angle on the axle splines going into the spider gears? You'd have to have the splines recut to their original depth,but i got a company called graden gears here in sydney to increase the depth of the splines on a part from a gearbox & it cost bugger all. Even if you had to heat treat the splines again, any competant spring maker should be able to do this. I mean they were making leaf springs for a motorbike on American Chopper the other day & the heat treatmeat was simply cooling the heated spring in an oil bath.you could then bend the housing in a press & not wear out spider gears & axle splines.
#10
Re: rear wheel camber
Daveman
Posted on: 2006/8/12 3:20
How is that possibly going to work???
Remember that it has to spin on a fixed axis running down the line of the axle...... You could decrease the wear by slightly tapering the spline but you then decrease the amount of contact between the axle and the centre splines which would be more likely to strip the splines out. You can view topic.
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