|
Suspension | Chassis | Brakes -- Sponsored by 949 Racing Relating to suspension, chassis, and brakes. Sponsored by 949 Racing. |
|
Thread Tools | Search this Thread |
03-21-2016, 10:00 PM | #1 |
Shadetree Project Ratchet
Join Date: Apr 2014
Drives: series.Blue
Location: Greater DMV
Posts: 1,014
Thanks: 1,575
Thanked 634 Times in 376 Posts
Mentioned: 10 Post(s)
Tagged: 3 Thread(s)
|
More rear suspension travel
So I've been thinking through a solution to add more rear bump travel.
I'm on Swift Spec Rs with Bilsteins. I plan to run Buddy Club (or similar) rear lower control arms since they have a, lower than stock, shock mounting location. Then because the Bilstein lower spring perch is removable, I plan on machining a spacer to fit under the removable spring perch on the rear struts equal to the distance between the stock and lower mounting locations. This would essentially relocate the spring up an equal distance to the movement of the shock body down, restoring said distance in bump travel, whatever that may be 15mm, 20mm, etc. More bump travel would reduce usage of the bump stops allow for more movement, etc. Am I completely wrong here? I wish the Bilsteins for our cars were like the ones for Audis. The spring perch mounts on the same circlip, but there are multiple groves to locate the circlip on. Just thinking out loud. Thoughts? Don't tell me to "just buy coilovers." I eventually will.
__________________
The Shadetree Project: I turn wrenches
|
03-21-2016, 10:15 PM | #2 |
Señor Member
Join Date: Aug 2012
Drives: 86 GT/'74 TA22 Celica/Kangaroo
Location: Melbourne, Australia
Posts: 1,706
Thanks: 1,104
Thanked 764 Times in 478 Posts
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
|
What you are suggesting makes sense but what you gain in bump travel you will lose in droop...
__________________
1974 TA22 Celica
2013 86 GT |
The Following User Says Thank You to Turdinator For This Useful Post: | Hyper4mance2k (03-21-2016) |
03-21-2016, 10:21 PM | #3 |
Senior Member
Join Date: May 2014
Drives: 2014 FR-S Asphalt
Location: Orlando, FL
Posts: 116
Thanks: 0
Thanked 50 Times in 31 Posts
Mentioned: 0 Post(s)
Tagged: 2 Thread(s)
|
There is at least one co that makes rear strut mounts that add clearance for lowering springs and give back strut travel. I just can't seem to find them atm.
|
03-21-2016, 10:36 PM | #4 |
Shadetree Project Ratchet
Join Date: Apr 2014
Drives: series.Blue
Location: Greater DMV
Posts: 1,014
Thanks: 1,575
Thanked 634 Times in 376 Posts
Mentioned: 10 Post(s)
Tagged: 3 Thread(s)
|
Yes, but the lowering springs essentially add 25mm of droop due to the 25mm drop. Say the LCA relocated the shock 15mm lower, that's still 10 more mm of droop over stock.
__________________
The Shadetree Project: I turn wrenches
|
The Following 2 Users Say Thank You to Hyper4mance2k For This Useful Post: | Turdinator (03-21-2016), wparsons (03-22-2016) |
03-21-2016, 10:49 PM | #5 |
Shadetree Project Ratchet
Join Date: Apr 2014
Drives: series.Blue
Location: Greater DMV
Posts: 1,014
Thanks: 1,575
Thanked 634 Times in 376 Posts
Mentioned: 10 Post(s)
Tagged: 3 Thread(s)
|
I think you're thinking of the Raceeng Top hats. They add bump travel by relocating the shock mounting point up, but do they add bump travel between the shock body in the right location? The definitely add to internal bump travel, but I don't know if they actually add to suspension travel. I suppose they must, and maybe I'm overthinking this to avoid thinking about my grad school homework.
__________________
The Shadetree Project: I turn wrenches
|
03-21-2016, 11:28 PM | #6 |
Senior Member
Join Date: Sep 2014
Drives: BRZ
Location: Los Angeles
Posts: 3,053
Thanks: 1,773
Thanked 2,451 Times in 1,271 Posts
Mentioned: 79 Post(s)
Tagged: 0 Thread(s)
|
Yes. It works as you described. Popular in the miata/honda competition world. They usually pair with ebay slip on coil over sleeves and some used springs to make for a good budget setup. Koni yellow are popular too. I wanted a similar setup but I did not want to spend the time locating the correct shocks for the application. I believe the upper limit of the valving is around 450-500lb spring rate, probably closer to 400lbs.
|
The Following User Says Thank You to swarb For This Useful Post: | Hyper4mance2k (03-22-2016) |
03-24-2016, 08:13 PM | #7 |
Senior Member
Join Date: Jun 2014
Drives: S60R/Corvette
Location: Reading, PA
Posts: 104
Thanks: 4
Thanked 236 Times in 59 Posts
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
|
Raceseng mounts will add bump travel at a lowered right height but can have adverse effects if the shock wasn't designed for the mount.
When I designed the Penske's I made them to OEM length and stroke so the 1" extended mount would lower the car 1" and retain stock stroke. If a typical aftermarket coilover is shortened from OEM to accommodate a lowered ride height you'll have extra bump travel at the expense of droop travel. Most OEM shocks have too much droop travel anyway so it may not be a big deal. Sent from my ASUS_Z00AD using Tapatalk
__________________
Ryan M.
Strange Engineering Director of Suspension Development |
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Standard Suspension Bump Travel | 86•BRZ | Suspension | Chassis | Brakes -- Sponsored by 949 Racing | 87 | 07-26-2017 11:33 AM |
Squeaking / Creaking rear suspension with low ride height? Suspension pros welcome! | mothespaceman | Suspension | Chassis | Brakes -- Sponsored by 949 Racing | 10 | 08-14-2015 05:06 PM |
Time Travel | aaguilar3 | Off-Topic Lounge [WARNING: NO POLITICS] | 38 | 12-04-2014 05:09 PM |
Can we get longer struts and rear shock travel? | PowderfaceTr. | Suspension | Chassis | Brakes -- Sponsored by 949 Racing | 13 | 06-04-2013 05:18 PM |