Suspension and Chassis Questions about your suspension? Need chassis advice?

Road Tech K-Member and A-Arms (Stock Suspension, Not Coil-Over)

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Old Sep 17, 2002 | 03:16 PM
  #1  
Scott_92RS's Avatar
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From: Plano, TX
Car: 1992 RS
Engine: 406 Stealth Ram
Transmission: 700R4
Road Tech K-Member and A-Arms (Stock Suspension, Not Coil-Over)

I received this email from John @ Road Tech.

looks like the introductory price will be about
the same as my other stuff $500.00 for the
k-member and $400.00 for the control arms with
spring seats and heavy duty sway bar mounts. I
would like to get atleast two deposits for orders
before starting so do some networking and we can
get the ball rolling. thanks
I'm down for a whole set (K-Member and A-Arms). If you are interested, let John know at roadtechonline@yahoo.com. A 50% deposit is required. As of now, no time frame has been made available to me. I'll give him this link, I'm sure he'll respond.
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Old Sep 18, 2002 | 09:54 PM
  #2  
Scott_92RS's Avatar
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From: Plano, TX
Car: 1992 RS
Engine: 406 Stealth Ram
Transmission: 700R4
Nobody is interested in this?

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Old Sep 18, 2002 | 11:29 PM
  #3  
SpeedCat86's Avatar
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Joined: Oct 2000
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From: Chesapeake, VA
Car: '86 TransAm WS6
Engine: 305 TPI
Transmission: Custom TH700R4
I am way interested in this, I just have to finish paying for the body work first. Oh, yeah, and I have a tuition bill coming up.....Maybe next summer. I applaud the fact that Road Tech and co. are going to do this for us, I just don't have the money for it now.

Last edited by SpeedCat86; Sep 18, 2002 at 11:31 PM.
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Old Sep 19, 2002 | 03:49 AM
  #4  
REVLIMIT's Avatar
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Joined: Nov 1999
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From: Hawaii
Car: 1984 Chevy Camaro
Engine: Built L98
Transmission: T-56 6 speed
I'll more then likely make an order later on. Right now I have to do alot of body work and soon my motor/trans swap. But after that I'll more then likely order a set.
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Old Sep 19, 2002 | 10:20 AM
  #5  
Christobal's Avatar
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From: So Cal
I too emailed him, got a response, but not the second response.

Are we talking about weight jacking capability on those arms? How about some specs, like how much lower the bottom of the oil pan can sit in the car relative to the factory K member, ground clearance relative to factory etc.. I like specs related to why a person might want to purchase something. I'm there with the interest and the means, but don't like throwing money, especially non refundable?? money into a black hole.

Chris
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Old Sep 19, 2002 | 10:32 AM
  #6  
formul8!!'s Avatar
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Joined: Jan 2001
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From: www.thirdgentech.com
Car: 2004 GTO
Engine: LS1
Transmission: T-56
I am waaaaay into this!!!

This spring, I am placing my order.

Still trying to hit 12.99 or better on my stock head,cam,bottom end L98.

To do this, i have to take weight out of the car. I am sure this weighs much less than the stock crap!!

After that, it's all road race- baby!!!
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Old Sep 19, 2002 | 11:09 AM
  #7  
Road Tech's Avatar
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Joined: Apr 2001
Posts: 27
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From: Princeton,Tx
Yes the weight jack will be in the control arm. I think it would be more benificial to the road race type guy who has aftermarket springs and needs to throw the corner weights around. they are not be designed as a lowering tool. as for ground clearance from the road it is the same as stock , I use two 1.250" dia. tubes for the lower cross bars. I do have my jig set up for stock height motor mount location or 1/2" lower as in the picture above( which is a big block car) I think if you lower any motor you then may run into other issues ie... pinion angle etc... if you look at these pics.

http://www.roadtechonline.com/customer1.phtml

they will give you an idea of how much room is opened up with the k-member. acessability is one of the greater benifits....

John




Are we talking about weight jacking capability on those arms? How about some specs, like how much lower the bottom of the oil pan can sit in the car relative to the factory K member, ground clearance relative to factory etc.. I like specs related to why a person might want to purchase something. I'm there with the interest and the means, but don't like throwing money, especially non refundable?? money into a black hole.
Reply
Old Sep 19, 2002 | 12:52 PM
  #8  
blown87gta's Avatar
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20 Year Member
 
Joined: Nov 2001
Posts: 37
Likes: 1
From: DFW metroplex, TX
Car: 1987 Pontiac TransAm GTA
Engine: Vortech S-Trim, 355cid
Transmission: 700R4
Axle/Gears: Mosier 12bolt, 3:73 Eaton locker
Originally posted by Road Tech
[B]Yes the weight jack will be in the control arm. I think it would be more benificial to the road race type guy who has aftermarket springs and needs to throw the corner weights around. they are not be designed as a lowering tool. as for ground clearance from the road it is the same as stock , I use two 1.250" dia. tubes for the lower cross bars. I do have my jig set up for stock height motor mount location or 1/2" lower as in the picture above( which is a big block car) I think if you lower any motor you then may run into other issues ie... pinion angle etc... if you look at these pics.

http://www.roadtechonline.com/customer1.phtml

they will give you an idea of how much room is opened up with the k-member. acessability is one of the greater benifits....

John
And the castor/camber top mount w/spherical
bearing is clearly visible too. The diameter
doesn't look as bulky as the HMS version to me,
but this one is made of steel & not aluminum....

thanks,

T.
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Old Sep 19, 2002 | 03:14 PM
  #9  
Christobal's Avatar
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Joined: Aug 1999
Posts: 96
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From: So Cal
Thanks for the info

I just measured a cut factory high rate spring, and it appears the uncut unloaded height (factory length) is about 14-14.5 inches? Anyone know? My application will mainly be road racing. The car also has strong potential to be used for land speed racing. In both but particualarly the latter, we run really high spring rates compared to street stuff. I haven't checked all aftermarket coil spring manufactures, but for example, www.afcoracing.com has 5.5 wide (measured outside of coil to outside of coil opposite side, not coil center to coil center, same as factory right?) with lengths of 9.5 and 12 inches. I personally would probably prefer to run aftermarket springs like this which are apparently usually shorter than the factory height, for reasons of value and also the potential design of the weight jack setup.

John, are you thinking of a jack screw mounted in the a arm and therefor screwed from the bottom up, or might there be potenial for putting the jack screw in the k member, for jacking from under the hood down? Keeping in mind, I am not as familiar with where the factory location of the spring perch is in relation to other stuff under the hood, but if it is workable would that be possible to help simplify/lighten unsprung weight in the a arm and also potentially allow for more jack screw length (potential ground clearance issues if in the a arm) for flexibilty in spring choice etc?

I am not trying to throw a wrench in anything, jsut giving you an idea of what one of your potential customers is looking to do with your product.

You have mentioned setting this thing up for an option of steering systems to be used with the same unit. I have not given much thought to this but am willing to consider it as an advantage if there was other interest in it and a design could be agreed upon.


I am not in a big hurry, though for whatever reasons others may be. I would like to hold off for at least 1-2 weeks to see how others respond to the threads related to your proposal. By that time the number will likely have grown allowing a larger initial investment and order, which I am guessing you would prefer?
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Old Sep 28, 2002 | 04:26 PM
  #10  
Christobal's Avatar
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Joined: Aug 1999
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From: So Cal
Any response to these questions? Jack screw in the K-member vs. the arm? Aftermarket rack and pinion, factory? Is a prototype or an initial run being made?

Chris
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Old Sep 28, 2002 | 07:42 PM
  #11  
Tom Keliher's Avatar
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25 Year Member
 
Joined: Jul 1999
Posts: 849
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Is it possible to see a photo of just the a-arm with spring perch?
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