Ok so I was thinking of using motorbike shocks on the Spitfire but the rear has the leaf spring. Is there any reason I can't remove the coil spring and just run the shock on the rear?
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July 28, 2011 11:34 p.m. 93EXCivic SuperDork
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July 28, 2011 11:45 p.m. triumph5 SuperDork
Structural integrity of the upper mount. It would become a now now-overloaded upper shock mount.
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July 29, 2011 12:18 a.m. erohslc Reader
The Spitfire upper mount is plenty strong enough (hint: transient shock loads far exceed spring loads) Lots of folks have gone to coilovers. ISTR that the Abomination used MC coilovers, and there have been a couple of threads on MC coilovers too.
Carter
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July 29, 2011 5:58 a.m. bravenrace SuperDork
But aren't you asking about removing the spring on the shock and just using it as a shock along with the leaf spring? That wouldn't be a coil over and I can't see how it could possibly make the shock mount loading any different, except for a change in the stiffness of the shock itself. Or am I misunderstanding the question?
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July 29, 2011 6:42 a.m. mad_machine SuperDork
isn't the transverse leaf spring on the spit MORE than just a spring? I thought it was also a locating member of the suspension
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July 29, 2011 6:49 a.m. pres589 Dork
Yeah I thought the transverse spring was also an upper locating link on that car.
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July 29, 2011 6:51 a.m. foxtrapper SuperDork
Yes, you can run just the shock.
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July 29, 2011 7:16 a.m. 93EXCivic SuperDork
bravenrace wrote:
But aren't you asking about removing the spring on the shock and just using it as a shock along with the leaf spring? That wouldn't be a coil over and I can't see how it could possibly make the shock mount loading any different, except for a change in the stiffness of the shock itself.
Yup that is what I am asking. I am just getting an idiot check to make sure MC shocks don't have anything weird going on.
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July 29, 2011 10:44 a.m. GregW New Reader
The motorbike shock is probably too soft to damp the much higher spring rate and greater mass of the spitfire hub and wheel adaquately. I would find a set of adjustable Koni NOS shocks and go from there.
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July 29, 2011 1:24 p.m. Teh E36 M3 HalfDork
The YZF-R1 shocks have to control a ~500lb/in spring. That should be plenty stiff, right?
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July 29, 2011 2:48 p.m. triumphcorvair New Reader
Just to make sure and reconfirm I'm right, I checked the rear suspension on my 67 MkIII and it doesn't have a "coil over spring" on the shock. PRI makes a rear suspension kit that does away with the transverse leap spring and adds coil overs.
