10-24-2011, 06:41 AM | #1 |
Private
15
Rep 51
Posts |
Moton Clubsport vs. KW Clubsport ?
hey guys,
I'm trying to decide on coil overs for my 1 //M. The car will be pretty much weekend / trackday car. Previously, I had KW V3 on my 370z and I was quite satisfied with the KW compared to other popular brands for 370z such as TEIN Monoflex and such. Okay, let me get to the question. I'm trying to pick one. Either Moton or KW. I know Moton is more track focused suspension. My concern is the ride comfort (little concern), is it unbearable to drive on the streets? Help me to decide. |
10-24-2011, 09:46 AM | #4 |
Banned
583
Rep 1,170
Posts
Drives: M2 Competition, E30 M3 DTM
Join Date: Apr 2006
Location: Country where the taxes are too high!!
|
Just wait a few weeks.
JRZ has 1M coupe suspension on it s way. I am getting a JRZ suspension when they are ready to go on the car. This suspension is also made as a compromise between road and track days. The bump and rebound can be adjusted also. When they arrive i make pictures of them. I be on the Nurburgring on 15 november to see how they go overthere i make a movie then also. Try to find a good setup with the bump and rebound. |
Appreciate
0
|
11-03-2011, 01:27 AM | #5 |
Moderator
683
Rep 4,737
Posts |
Two different categories of products, and very different price range.
Moton Clubsport are racing dampers. They are sold as dampers only, and you (or your vendor) add camber plates, mounts, springs, etc. to make it work. Moton Clubsport are monotube with remote reservoirs and requires N2 pressurization. KW Clubsport is a hybrid street/track set up. A mix between the V3 and the Competition line. They are sold as a plug and play kit. No remote reservoirs. In terms of ride, it all depends on your set up, e.g. springs, damper settings, mounts etc. Either can be made to be comfortable on the streets. |
Appreciate
0
|
11-03-2011, 06:16 AM | #6 | |
Private
1
Rep 80
Posts |
Quote:
|
|
Appreciate
0
|
11-03-2011, 06:41 AM | #7 |
Captain
120
Rep 898
Posts
Drives: '69 GT3, GT4, 1M, 912
Join Date: Nov 2010
Location: SF Bay Area, Shenzhen, Oman
|
Does anyone know what the stock/ oem dampers are?
We should probably throw Ohlins in the mix too- maybe the best design out there with their race products. I would like to learn more about the offerings specific to the 1M/ M3, especially in the dual use street/ track range. I've had JRZ 1x, JRZ 2x and Moton 3x on previous Porsches, but always full-race, never club-sport. My impressions are that Moton and JRZ are very similar in internal design, but that Moton is slightly higher quality. I tend to feel that AST is in the same range depending on model, KW is one rung down and the Ohlins one rung above everything else mentioned. Has anyone done or seen a good shock-dyno of a 1M stock?
__________________
1M, GT4, 1969 Porsche 911 w/ 997 GT3 Cup Motor (435hp & 2,100 lbs)
|
Appreciate
0
|
11-03-2011, 06:56 AM | #8 | |
Kind of a big deal
303
Rep 1,674
Posts
Drives: an 1M not often enough
Join Date: Jan 2011
Location: between Unlimited and Hard to Get
|
Quote:
|
|
Appreciate
0
|
11-03-2011, 07:16 AM | #9 | |
Captain
120
Rep 898
Posts
Drives: '69 GT3, GT4, 1M, 912
Join Date: Nov 2010
Location: SF Bay Area, Shenzhen, Oman
|
Quote:
__________________
1M, GT4, 1969 Porsche 911 w/ 997 GT3 Cup Motor (435hp & 2,100 lbs)
|
|
Appreciate
0
|
11-03-2011, 08:23 AM | #10 | |
Major
452
Rep 1,358
Posts |
Quote:
Suspensions are lot like any other mechanized product. The more you spend the better performing and happier you will be. All of the brands mentioned above make a quality product. Spending more will get you a better lap time though and better overall ride in general (comparing apples to apples, not street vs track focused units). I can still remember when the high end shocks like JRZs first hit the prepared club racing scene. The guys running them were suddenly seconds up on the rest of the field. |
|
Appreciate
0
|
11-03-2011, 11:55 AM | #11 |
Kind of a big deal
303
Rep 1,674
Posts
Drives: an 1M not often enough
Join Date: Jan 2011
Location: between Unlimited and Hard to Get
|
Not looking to lower the car nor change its weight, thus have not looked into the spring (-rates). OEM spring rates are quite tough to get a hold off as BMW uses a configuration dependent selection per corner (fi per corner stock M3 can use any out of 5 different spring rates depending on weigth and location of the selected options).
|
Appreciate
0
|
11-03-2011, 12:48 PM | #12 | |
Moderator
683
Rep 4,737
Posts |
Quote:
Last year, Moton upgraded its Clubsport line so now it is basically its Motorsports 2-way. I had this set up on my M3, and the beauty of Moton is its wide range of damping adjustment which really suits cars at the club sport level because you can significantly up/down rate your springs without revalving the shocks. Moreover, the dampers can be set to be very soft which gives a good ride. In terms of noise my dampers squealed a little due to N2 pressurization and the seals. Ohlins (TTX line) are a completely different animal. They are a twin tube design with a solid piston. Damping is completely controlled by external valves mounted on the body of the dampers. Some of them feature through-rod, meaning the shaft goes through the entire shock, so no damping fluid is displaced inside the damper during compression and rebound. This means that the lift force due to pressurization is always the same and you can precisesly control the damping curves. These dampers are used on the ALMS M3s. I've tried many suspension kits/springs on my 335/M3 (H&R coilover, springs, Dinan springs, Moton Street Sport, Moton Clubsport, KW Clubsport and KW Competition), and besides dampers, what is just as important is how your suspension is spec'd and set up (i.e. spring rates, damping settings, etc). You can have the best dampers in the world, but without a proper set up they will do you no good. |
|
Appreciate
0
|
11-03-2011, 12:57 PM | #13 | |
Colonel
297
Rep 2,898
Posts |
Quote:
How would you compare AST? Do they operate similarly with orifices instead of shim stacks? Also, what, if any, changes to do you expect at Moton now that it has been acquired by AST? FWIW, I understand that a couple of employees recently left Moton's US operations to start their own company. Thanks. Neil |
|
Appreciate
0
|
11-03-2011, 01:08 PM | #15 | |
Moderator
683
Rep 4,737
Posts |
Quote:
AST's first priority was to get Moton's racing dampers back in production and resume their services. As far as the future I suppose Moton will continue to focus on high-end racing dampers. |
|
Appreciate
0
|
11-03-2011, 01:16 PM | #16 | |
Colonel
297
Rep 2,898
Posts |
Quote:
I ran AST 4200s on my previous car (a much-modified '99 M Coupe) and liked them. Just not sure how their "internals" compared to the Motons. Neil |
|
Appreciate
0
|
11-03-2011, 01:40 PM | #17 |
Kind of a big deal
303
Rep 1,674
Posts
Drives: an 1M not often enough
Join Date: Jan 2011
Location: between Unlimited and Hard to Get
|
These are shock specs of the stock 1M suspension (not Dyno), Would be interested in graphs of the threat title shocks, can someone post?
Last edited by eeghie; 11-15-2011 at 03:53 PM.. |
Appreciate
0
|
11-03-2011, 02:56 PM | #18 | |
Captain
120
Rep 898
Posts
Drives: '69 GT3, GT4, 1M, 912
Join Date: Nov 2010
Location: SF Bay Area, Shenzhen, Oman
|
Quote:
Where did these come from? I must say I'm pretty surprised- I'm not familiar with BMW's shock tuning, but it almost looks to me like rebound and compression are reversed!
__________________
1M, GT4, 1969 Porsche 911 w/ 997 GT3 Cup Motor (435hp & 2,100 lbs)
|
|
Appreciate
0
|
11-03-2011, 06:55 PM | #19 | |
Kind of a big deal
303
Rep 1,674
Posts
Drives: an 1M not often enough
Join Date: Jan 2011
Location: between Unlimited and Hard to Get
|
Quote:
What struck me is that although the weight of the car is in perfect balance, the rear shocks are quite a bit stiffer R/F = ~3800[Ns/m]/~2800[Ns/m] = ~136%. This ratio is quite larger than fi the M3 shocks where front and rear shock compliance is largely equal (referring to E9X M3 ZCP shocks). In service to OP's selection of upgraded shocks, I hope the more experienced shock-ers among us can also help all of us understand the 1M OEM setup better. I would assume significant reasons could be to battle understeer (car will roll & pitch towards the outer corner front wheel) and to prevent excessive wheel torque jitter ??? |
|
Appreciate
0
|
11-03-2011, 07:06 PM | #20 | |
Captain
120
Rep 898
Posts
Drives: '69 GT3, GT4, 1M, 912
Join Date: Nov 2010
Location: SF Bay Area, Shenzhen, Oman
|
Quote:
Second, I'm not surprised the rear is overall stiffer than the front. Assuming the 1M's motion ratios are identical to the M3s (purely an assumption on my part based on what I've read about the M3 and 1M sharing parts) then the rear motion ratio is something like .56 vs a front of .96. This means the rear shocks would need to be much stiffer at the shock itself to have identical values at the wheel. Quick rough simulation suggested rear shocks almost 3x stiffer than the fronts would be about right- these are less than 2x, suggesting they may be softening up the rear (likely both springs and shocks?) to help put power down. Seems to make sense. Could you post the M3 values you have as well? Any way to double check bounce if and rebound are labeled right?
__________________
1M, GT4, 1969 Porsche 911 w/ 997 GT3 Cup Motor (435hp & 2,100 lbs)
|
|
Appreciate
0
|
11-03-2011, 07:32 PM | #21 |
Moderator
683
Rep 4,737
Posts |
|
Appreciate
0
|
11-03-2011, 07:49 PM | #22 |
Colonel
297
Rep 2,898
Posts |
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|