Recent threads over at Roadfly about shipping blocks left by vehicle prep got me thinking about replacing/upgrading the rear spring bumpstops to give things a little more progressive spring rate at the limits and a bit earlier influence. I was thinking of H&R/Bilstein set up but since my car is mainly for touring (may get a kart to appease racing bug) I don't want to sacrifice ride quality too much.
The rear spring have rather feeble looking bumpstops on them. How are they mounted? I have found several off-road bumpstops that are pre-threaded and was wondering if these are similar to those on our coupes. http://www.suspension.com/Bumpstop.htm
Looks like this could be a quick and painless suspension upgrade to prevent rear coil binding and makes things a little more forgiving.
FYI, I have found that the Miata relies heavily on bumpstops as a means to give smooth ride and progressive feel.
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| Reply » Rear Spring Bumpstops (Ron???) |
The stock rear bump-stops just slip over the top spring locating post:
NOTE: this was on my Roadster... the initial coil I got was too soft and too short (6", 2.25" diam, 425 spring-rate). I ended up with a 7 x 2.25", 450 on that car, and a 6 x 2.5, 525 on the Coupe).
It's the black cone-shaped thing inside the coil at the top... it also acts as the upper coil pad. It's sort of like an inverted safety cone.
It shouldn't be too difficult to come up with something to work in it's place. The pad portion could be retained just by slicing off the bump-stop, but you'd need to find some way to affix the new bump-stop in place.
I'd be very interested in this as well... though I'm running 2.5" barrel coils (525 spring-rate), I can manage to get coil-bind in extreme cases. I'd much rather have a bump-stop coming into play rather than binding the coil (bam!).
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| Reply » Rear Spring Bumpstops (Ron???) |
Perhaps the easier solution would be to place something in the lower spring mount that would cause the stock stop to come into play a bit earlier.
Unfortunately, I'll be out of town this weekend so I won;t have time to research it, but I may have a chance to stop by an off-road parts warehouse soon to check out our options.
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| Reply » Rear Spring Bumpstops (Ron???) |
Well, aftr talking to local guy, I amy try to investigate by dropping out the spring. I have two options; add a disc bumpstop to the bottom to force the stock stop to come into play earlier or replace the top stop.
Since the top stop is part fot he spring perch, looks like door #1...
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| Reply » Rear Spring Bumpstops (Ron???) |
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| Reply » Rear Spring Bumpstops (Ron???) |
Thanks for the info, Ron.
Looks like I could add to the lower pad. Hmmm...
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Rear Spring Bumpstops (Ron???)