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Old 01-15-2013, 08:01 AM   #31 (permalink)
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Quote:
Originally Posted by wspohn View Post
Has anyone bump steered a Solstice? Ground clearance considerations aside, I wonder if dropping one a couple of inches wouldn't introduce some unwanted bump steer.
In my case, the only difference that I noticed was a bit harsher ride because of the reduced travel. I noticed no difference in steering.

I reduced the preload on the springs which helped but it is still noticably harsher than stock.
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Old 01-15-2013, 09:55 AM   #32 (permalink)
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It's pretty routine to check this when building a race car, and I just figured that one of the serious solo or race guys would have done it, but I guess they aren't watching this thread!
I wonder if it's been answered over on the scca boards. If you ever do hear back, I'd love to know as well.
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Old 01-17-2013, 08:28 AM   #33 (permalink)
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Here are some of Punisher at various heights. One of the advantages of BC is you can move it up and down when you wish.
Get Mysti out of the shop tomorrow. Hood dents gone and new front facia and passenger-side grilles. Having the front arrowhead emblem and bump removed. (A nose job.). Anyway, while she was up on the rack, I was looking around underneath. I see some damage to the exhaust flex coupler and a couple other spots from rubbing over speed bumps. She's lowered 1-1/2", and I supposed she's settled a bit more than that. I have BC coil overs as well.

Rob, did you have The Punisher realigned each time you changed the ride height?
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Old 01-17-2013, 08:34 AM   #34 (permalink)
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Has anyone bump steered a Solstice? Ground clearance considerations aside, I wonder if dropping one a couple of inches wouldn't introduce some unwanted bump steer.
I believe bump steer is a factor af alignment rather than ride height - specifically toe-in and camber. There are several threads here that discuss bump steer.
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Old 01-17-2013, 10:49 AM   #35 (permalink)
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I believe bump steer is a factor af alignment rather than ride height - specifically toe-in and camber. There are several threads here that discuss bump steer.
Yes, but changing the ride height changes the relative angles of all the suspension parts, moving them of of their designed 'sweet spots'. Thus a bump can have a more extreme effect on toe and camber angles than it would at the original ride height.

Not an expert here, so don't know that it WILL have such and effect, just that it could.
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Old 01-17-2013, 11:00 AM   #36 (permalink)
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I asked the same question on the Kappa board in hopes that a solo type who has been through it would respond (nothing so far).

Good explanations at

Bump Steer Explained - Circle Track Magazine

and

Longacre Racing Online -- Tech Article "Bump Steer "

Dave at DDM said he may have a graph of toe vs. suspension travel for the Kappa suspension and will post if he can find it. I'll repost here if he doeas.
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Old 01-17-2013, 11:43 AM   #37 (permalink)
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I had a friend that owned a 1970 trans am Mustang (ex Jones car I think). Ford relocated the upper and lower control arm chassis mounting holes 2" higher.
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Old 01-20-2013, 08:12 AM   #38 (permalink)
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Old 05-22-2013, 12:36 PM   #39 (permalink)
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what can i do to lower the car and get a better and smoother ride out of the solstice?
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Old 01-14-2014, 02:45 PM   #40 (permalink)
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did any of you have to modify the bump stops when you lowered your car?
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Old 01-15-2014, 09:03 AM   #41 (permalink)
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Here are some of Punisher at various heights. One of the advantages of BC is you can move it up and down when you wish.
RTE, that's not a car, that's a sled w/4 wheels.
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Old 01-15-2014, 09:25 AM   #42 (permalink)
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Like that spoiler.
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Old 01-15-2014, 10:20 AM   #43 (permalink)
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We still haven't heard from anyone that seems to know how badly lowering the cars screws up handling by introducing bump steer. Aren't there any racers or slalom types out there that have been through this?

e.g. Solstice Rear Caster - GM Techlink
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Old 01-15-2014, 11:02 AM   #44 (permalink)
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Quote:
Originally Posted by Carpe Diem View Post
Get Mysti out of the shop tomorrow. Hood dents gone and new front facia and passenger-side grilles. Having the front arrowhead emblem and bump removed. (A nose job.). Anyway, while she was up on the rack, I was looking around underneath. I see some damage to the exhaust flex coupler and a couple other spots from rubbing over speed bumps. She's lowered 1-1/2", and I supposed she's settled a bit more than that. I have BC coil overs as well.

Rob, did you have The Punisher realigned each time you changed the ride height?
The first two times. I found that the alignment did not change enough to warrant a new alighment so now I just do it once a year.
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http://www.skyroadster.com/forums/f2...cussion-42115/

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Old 01-15-2014, 11:04 AM   #45 (permalink)
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Originally Posted by wspohn View Post
We still haven't heard from anyone that seems to know how badly lowering the cars screws up handling by introducing bump steer. Aren't there any racers or slalom types out there that have been through this?

e.g. Solstice Rear Caster - GM Techlink
Im too old to worry about bump steer. I just worry about things that go bump in the night . . .
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Secretary Rocky Mountain Solstice and Sky Club
Punisher's story
http://www.solsticeforum.com/forum/f62/punisher-65168/
http://www.skyroadster.com/forums/f2...cussion-42115/

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