Suspension, Brakes, Drivetrain discuss the wondrous effects of boost and your miata...
Sponsored by:
Sponsored by:

Xidas rubbing on FUCA! HELP!

Thread Tools
 
Search this Thread
 
Old 07-11-2018, 04:42 PM
  #41  
Elite Member
 
codrus's Avatar
 
Join Date: Mar 2007
Location: Santa Clara, CA
Posts: 5,165
Total Cats: 855
Default

Originally Posted by aidandj
In the end it is up to the car builder to make sure that everything clears and functions correctly, not the vendor of a shock.
Sure. But perhaps it's also the responsibility of a vendor to disclose known compatibility issues with commonly used parts? Perhaps even a safety issue? I imagine bad things would happen if the shock body let go as the front suspension was compressing for a 100 mph corner.

--Ian
codrus is offline  
Old 07-11-2018, 04:43 PM
  #42  
Elite Member
Thread Starter
 
icantlearn's Avatar
 
Join Date: Sep 2015
Location: San Jose, CA
Posts: 1,939
Total Cats: 117
Default

Originally Posted by sixshooter
Don't you dare bring personal responsibility into this! How dare you!

He's running non-stock wheels and non stock tire size on a non stock suspension alignment, using full custom lower ball joints, and is complaining that his non-stock parts don't all fit together without touching anything like stock.

Yeah, it's Emilio's fault. Hahaha!
So you are saing that a RACE coilover was not designed to be used in conjunction with the same manufactures wheels, and ball joints that they sell and recommend....right.

At least disclose potential contact issues.
icantlearn is offline  
Old 07-11-2018, 04:48 PM
  #43  
Elite Member
 
codrus's Avatar
 
Join Date: Mar 2007
Location: Santa Clara, CA
Posts: 5,165
Total Cats: 855
Default

Originally Posted by MiataMan00
So you are saing that a RACE coilover was not designed to be used in conjunction with the same manufactures wheels, and ball joints that they sell and recommend....right.
https://en.wikipedia.org/wiki/Implied_warranty

--Ian
codrus is offline  
Old 07-11-2018, 04:48 PM
  #44  
SADFab Destructive Testing Engineer
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

Originally Posted by MiataMan00
If the tire is rubbing n the shock tower that IS bad. Race car, street car, it doesnt matter.
Not true

Originally Posted by MiataMan00
There is no documentation saying that there might be an issue with contact between the shock body and other parts. Expecting hundreds or thousands of customers to do a stoke pass is not reasonable.
Also not true. Springs can contact axles, tires can contact the body, different size/offset wheels, different tires can cause different interference issues. Hell different camber settings can be the difference between wrecking a fender and not touching it.

Originally Posted by MiataMan00
Spring size has nothing to do with this
A shock body that can't fit a 2.25" spring will be larger than one build to fit a 2.25" spring.

It has everything to do with shock body size.

Originally Posted by MiataMan00
Exept when the vendor is tailoring the shock to work with your specific chassis, and gives you no shock body height adjustment. That just puts the customer in between a rock and a hard place.
aidandj is offline  
Old 07-11-2018, 04:56 PM
  #45  
Elite Member
Thread Starter
 
icantlearn's Avatar
 
Join Date: Sep 2015
Location: San Jose, CA
Posts: 1,939
Total Cats: 117
Default

How is tire contacting the fender ok? If you dont care about your car, sure. But I do.

You can use the existing shock body with a wider spring perch and it will work fine. So larger spring does not mean bigger shock body. The öhlins we build at my work uses the same shock body OD as xidas, but uses a 2.5" spring.

Im not going to cut out my fender well.
icantlearn is offline  
Old 07-11-2018, 04:58 PM
  #46  
Elite Member
iTrader: (6)
 
ryansmoneypit's Avatar
 
Join Date: Feb 2013
Location: A cave in Va
Posts: 3,395
Total Cats: 456
Default

Every single time a company came out with a new part that could affect suspension geometry, it is not the burden of the shock manufacturer to make sure their part complies. The company would never win. Exactly why I gave up on making a universal coil mount.

One thing I take away from fabricating and modding: If I did not personally verify fitment, it was my fault when it did not work, no matter how hard I try to place blame. In the end, I was the one who tightened the bolts and drove away.

If we were talking about a stock vehicle, then It would be a different story. If the NB arm hits the shock body with an alignment achieved with OEM adjustments, well then there is a problem.
ryansmoneypit is offline  
Old 07-11-2018, 04:58 PM
  #47  
SADFab Destructive Testing Engineer
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

If you care about going fast you take all the travel you can get. If your shock tower gets a light polishing so be it, run bigger bumpstops.

You missed my point. Any shock body that is built to fit a 2.25" spring would have the issue.

So the Ohlins you build at your work would also have this issue, its not a Xida issue.
aidandj is offline  
Reply
Leave a poscat -1 Leave a negcat
Old 07-11-2018, 05:08 PM
  #48  
Elite Member
Thread Starter
 
icantlearn's Avatar
 
Join Date: Sep 2015
Location: San Jose, CA
Posts: 1,939
Total Cats: 117
Default

Shock body size is not the issue. The contact is happening well into the bump stop. So if you would have limited travel by 1/2", this would not have been an issue.

What im getting from you guys is this, "Everybody who installs aftermarket suspension needs to disassemble the shock and do a stroke pass to verify no contact." Cmon, really...
icantlearn is offline  
Old 07-11-2018, 05:09 PM
  #49  
SADFab Destructive Testing Engineer
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

.....yes, thats exactly what I'm saying.

If you limited travel by a half inch then the shocks would be worse for my car. I want that extra half inch of travel.
aidandj is offline  
Old 07-11-2018, 05:11 PM
  #50  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,821
Total Cats: 3,481
Default

Originally Posted by MiataMan00

What im getting from you guys is this, "Everybody who installs aftermarket suspension needs to disassemble the shock and do a stroke pass to verify no contact." Cmon, really...


You got a race car with race parts many of which alter all sorts of clearances/geometry. Surely at some point you can see how the burden of making sure it all plays well together would be on you, no?

I think we're all in agreement that 949 should have done everyone a favor and released a PSA about this when this was identified, but otherwise....

again, just a thought. I know I'd be really mad if I discovered this on my own car never even thinking it might be a possibility, so I totally understand the anger/frustration.
18psi is offline  
Old 07-11-2018, 05:12 PM
  #51  
Elite Member
Thread Starter
 
icantlearn's Avatar
 
Join Date: Sep 2015
Location: San Jose, CA
Posts: 1,939
Total Cats: 117
Default

Are you not stuffing your tire into your fender?
icantlearn is offline  
Old 07-11-2018, 05:13 PM
  #52  
SADFab Destructive Testing Engineer
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

Nope. I get a bit of a polish on my shock tower when I hit big bumps, but otherwise no fender contact.

In the rear I had some upper control arm to body contact, but the 5lb sledge fixed that real quick.
aidandj is offline  
Old 07-11-2018, 05:15 PM
  #53  
Elite Member
Thread Starter
 
icantlearn's Avatar
 
Join Date: Sep 2015
Location: San Jose, CA
Posts: 1,939
Total Cats: 117
Default

what are your camber settings?
icantlearn is offline  
Old 07-11-2018, 05:16 PM
  #54  
SADFab Destructive Testing Engineer
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

I think im running 3.5*?

Car has been on jackstands since October though. Hoping to change that this weekend!
aidandj is offline  
Old 07-11-2018, 05:20 PM
  #55  
Elite Member
 
codrus's Avatar
 
Join Date: Mar 2007
Location: Santa Clara, CA
Posts: 5,165
Total Cats: 855
Default

Aidan also has an NA, so clearances on a bunch of stuff are going to be different.

--Ian
codrus is offline  
Old 07-11-2018, 05:21 PM
  #56  
Junior Member
 
BMWidmer's Avatar
 
Join Date: Oct 2010
Location: LI, NY
Posts: 110
Total Cats: 12
Default

It has been asked and its still not stated.... Spring rates on the xidas you have are 700/400?
BMWidmer is offline  
Old 07-11-2018, 05:22 PM
  #57  
SADFab Destructive Testing Engineer
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

Originally Posted by codrus
Aidan also has an NA, so clearances on a bunch of stuff are going to be different.

--Ian
Another reason why checking clearance is necessary
aidandj is offline  
Old 07-11-2018, 05:22 PM
  #58  
Elite Member
Thread Starter
 
icantlearn's Avatar
 
Join Date: Sep 2015
Location: San Jose, CA
Posts: 1,939
Total Cats: 117
Default

fix it pls. then come to laguna and watch your fenders get shafted as you go down the corkscrew
icantlearn is offline  
Old 07-11-2018, 05:23 PM
  #59  
Elite Member
Thread Starter
 
icantlearn's Avatar
 
Join Date: Sep 2015
Location: San Jose, CA
Posts: 1,939
Total Cats: 117
Default

Originally Posted by BMWidmer
It has been asked and its still not stated.... Spring rates on the xidas you have are 700/400?
900/500
icantlearn is offline  
Old 07-11-2018, 05:23 PM
  #60  
SADFab Destructive Testing Engineer
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

Originally Posted by MiataMan00
fix it pls. then come to laguna and watch your fenders get shafted as you go down the corkscrew
I've been down the corkscrew with xidas before. Also have run Hoosiers on my car at autox, and slammed bumpstops. So far fenders are untouched.
aidandj is offline  


Quick Reply: Xidas rubbing on FUCA! HELP!



All times are GMT -4. The time now is 09:43 PM.