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Tamiya TA05 Touring Sedan

Old 12-02-2008, 10:33 AM
  #10051  
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Originally Posted by mok View Post
54083 - RC Short Reversible Suspension Set
http://www.tamiyausa.com/product/ite...oduct-id=54083

I'm guessing you'll also need shorter swing shafts (eg. 42mm as opposed to 46/48mm)

Do you have to replace the entire suspension ?

Or can you just fit the 416 steering blocks (and 1050 bearings) in the TA05-R LW front suspension ??
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Old 12-02-2008, 10:49 AM
  #10052  
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I would suggest that the lower arms need to be replaced, along with the uprights which possibly have a larger offset than the LW Reversible Suspension uprights (to account for the decreased lower arm length and maintain track width). Not sure though, never played with one or looked that closely into it!
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Old 12-02-2008, 03:39 PM
  #10053  
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Whether or not you use the shorter arms depends on the track, the short arms require the 44mm shaft not the 46, for a tighter track like PRECC I'd use them, on a large flowing track like Bayswater I'd go for as wide a track as I could for stability and stay with the stock reversable arms.
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Old 12-02-2008, 04:25 PM
  #10054  
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I thought Mok mentioned that the overall track width doesn't change, only the arm length?
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Old 12-02-2008, 04:26 PM
  #10055  
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Originally Posted by mok View Post
plastic shock tower positions 1,2,3 correspond with carbon shock tower positions 1,2,3
the difference being on the carbon towers you have the additional hole 4

-Mark
Thanks Mark!
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Old 12-02-2008, 04:48 PM
  #10056  
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Originally Posted by stocker View Post
I thought Mok mentioned that the overall track width doesn't change, only the arm length?
Thats the bit i'm not sure on.
I'm only guessing that the track width would stay the same

It wouldnt make sense to change it massively, but would make sense if the suspension geometry was altered enough to allow different characteristics in handling whilst maintaining the same or similar track width.
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Old 12-02-2008, 05:01 PM
  #10057  
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Originally Posted by mok View Post
Thats the bit i'm not sure on.
I'm only guessing that the track width would stay the same

It wouldnt make sense to change it massively, but would make sense if the suspension geometry was altered enough to allow different characteristics in handling whilst maintaining the same or similar track width.
** UPDATE **
Just came across a website with someone explaining track width changes on the short suspension arms.. they believe overall track width at the front is reduced by 3mm (1.5mm per side) and rear is reduced by 2mm (1mm per side).
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Old 12-02-2008, 05:42 PM
  #10058  
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Does anyone use the inner-most hole (#1) on the camber links inner mounting position? Every setup sheet that I have seen on the TA05R use hole #3 or 4.
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Old 12-02-2008, 05:51 PM
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Originally Posted by stocker View Post
Does anyone use the inner-most hole (#1) on the camber links inner mounting position? Every setup sheet that I have seen on the TA05R use hole #3 or 4.
I do
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Old 12-02-2008, 05:54 PM
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In what situations would we want to change the position? want more camber gain in certain situations? Most only talk about moving the links up and down, but not in and out.

thanks for your inputs!
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Old 12-02-2008, 06:11 PM
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A longer link yields more traction on that particular end of the car. I've run the innermost hole for about 2 years on my car.I do also have them shimmed about 2mm as well. Perhaps a shorter link and a lower link would accomplish the same thing but this is just what I have gravitated to over time.
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Old 12-02-2008, 06:21 PM
  #10062  
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Originally Posted by stocker View Post
In what situations would we want to change the position? want more camber gain in certain situations? Most only talk about moving the links up and down, but not in and out.

thanks for your inputs!
Longer or shorter camber links adjust the roll center geometry of the chassis.
You can either raise or lower the roll center.

Lower roll center - CG has more leverage force being further away from the roll centre, which in turn means the car will roll more and generate more traction.

Higher roll center - CG has less leverage force as it is closer to the roll center, thus generating less traction.

Some useful info can be found here...
http://users.telenet.be/elvo/

-Mark
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Old 12-02-2008, 06:36 PM
  #10063  
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Originally Posted by mok View Post
** UPDATE **
Just came across a website with someone explaining track width changes on the short suspension arms.. they believe overall track width at the front is reduced by 3mm (1.5mm per side) and rear is reduced by 2mm (1mm per side).
People use wider suspension mounts when using short arms to compensate for the change in track width. When I started using short arms on my TA05MS, I used 1E and 1XA in the rear and 1C and 1D up front. The only other change I made was to raise the roll center on all four corners because the short arms lower the roll center in comparison to the normal lightweight arms. With short arms, overall, the car feels quicker with weight transition. I am thinking that they are preferable except under very low traction conditions.
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Old 12-04-2008, 04:37 PM
  #10064  
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Originally Posted by TeamGoodwrench View Post
OK thanks.

I'm positive I have more than 1.5 mm droop. We were all focusing strictly on the downstop setting alone, and not the resulting droop amount after lowering the ride height to 5.5 mm.

I guess I need to realize that a particular downstop setting alone doesn't mean anything -- it's the resulting droop amount with a given downstop setting and ride height that is critical ?

Thx again.

How did you get the ride height to 5.5mm? I've been trying to lower mine to about the same height. I ended up putting rubber o-ring on the inside of the damper body on the shaft and fabricated a 2mm carbon spacer that I put under the M3,M5 M5,M4 suspension mounts. The ride height is down to about 6-6.5mm. Haven't had a chance to test it yet. Thanks
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Old 12-04-2008, 05:47 PM
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Try the short shock springs and/or the -1 mm spring perches.
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