Simon
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| posted on 25/2/07 at 10:10 PM |
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Hybrid driveshafts
Peeps,
I was planning on using a complete Jag IRS in the rear of Deimos, but having partly assembled the rear end on my garage floor, I'm thinking that
I may be setting myself up for a lot of chassis cutting, which I don't want to do. This is as a result of the brake calipers and discs fouling
the rear middle crosspiece, tunnel and then seatbelt mountings.
Plan B is to use the Jag diff and mount solidly - I can weld a top mount to said crosspiece and use existing wishbone "subframe" to bolt
bottom of diff to. This will do away with some of the torque stresses ffrom a centrally mounted rear end.
So I'm now looking at using the Sierra driveshafts/uprights and my wishbones as is and Jag diff.
Now, the point is that as upper and lower wishbones and the driveshaft pivot are all in different places I'm concerned with the movement (within
their respective arcs) of each component setting up stresses. These are catered for by the Sierra driveshafts having a certain amount of spring over
their lengths (from the joints).
I will need to get my pushin shafts fitted with bolt-on inners to fit the Jag outputs.
Does anyone have any suggestions as to who can make/modify shafts for me, and estimates of price.
The other thing is, the Jag input is offset, will it matter if I centralise input shaft to the chassis and offset diff and use different length
d/shafts like the Sierra (given it's an LSD)
Thanks and
ATB
Simon
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RazMan
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| posted on 25/2/07 at 11:35 PM |
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GB Engineering did mine - they can do practically anything if you give them the details of length, spline count etc. Cheaper than most and a quality
job. Tel:01270 841081
£165 the pair IIRC
[Edited on 26-2-07 by RazMan]
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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James
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| posted on 26/2/07 at 04:36 PM |
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Is your current Sierra setup definately not man enough for the job?
What about just upgrading to Cossie stuff? Relatively compatible.... and you know it's strong enough.
Just an idea.
Cheers,
James
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"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
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ned
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| posted on 26/2/07 at 05:48 PM |
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James,
IIRC it was the dif ratio that Simon's after for the torque range of the v8 being a fair bit lower down the rev range.
Ned.
beware, I've got yellow skin
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Simon
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| posted on 26/2/07 at 08:09 PM |
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Raz,
Cheers, I give them a call
James,
Ned's right; the ratio is the primary reason (see charts below. If I could get Sierra bits that were as low as the 2.88 f/d r, I'd have
them
It should make quite a big difference to economy too
The other thing is, if the turboing proves successful, I may have to think about a either 3.9/4.6 and bigger turbo's.
And a chassis made from RSJ's
ATB
Simon
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