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XRAY - Model racing cars • View topic - Rear toe in

XRAY - Model racing cars

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 Post subject: Rear toe in
PostPosted: Sun May 19, 2013 14:05:40 
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Joined: Thu Sep 20, 2012 05:42:54
Posts: 61
Location: Shanghai
I am now running 2deg toe in in the rear to get the steering I need. There is several fast corners and combinations where tons of steering is needed and I could not figure out a better way to get it other than doing this.

Is that generally too little toe in or is 2 deg ok to run with? How can I create more steering specially on power in sweeping corners in a better way? I am afraid that I take grip out from the rear to balance the car when I actually should find more grip for the front.. I found some more steering today but think I need a little bit more before I can increase the toe in rear again.

Traction roll is not an issue.

Edit. Some more toe in rear would also be nice since there is a few places where the rear goes wide on power. It is not too bad but car would be easier to drive.

My setup
xform/index.php?act=view&ID=390&setup=t4


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 Post subject: Re: Rear toe in
PostPosted: Sun May 19, 2013 19:36:54 
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Joined: Sat Jun 18, 2005 12:48:40
Posts: 1357
Location: Windsor, UK
Looks like you've done everything I would try :D

Could try;
Front shocks in hole 2.
Front upper link in outer hole
1mm shim under front shock.

I notice on some of the team drivers sheets they removed the bulkhead shim at the front upper link in high grip (so the rear link is higher)

Never had enough grip yet to run 2deg rear toe :|


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 Post subject: Re: Rear toe in
PostPosted: Mon May 20, 2013 07:43:07 
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Joined: Thu Sep 20, 2012 05:42:54
Posts: 61
Location: Shanghai
Thanks! Thats some good points. Did not think of moving the upper link further out, that should hopefully help.

The car was pretty ok with 13.5 but now with 10.5 and harder tires those issues came up again. There is 3 places where I accelerate and need to steer through corner combinations, there is alot of time to take in those places.

I'll also try the two piece suspension holder in front next weekend.


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 Post subject: Re: Rear toe in
PostPosted: Mon May 20, 2013 10:36:09 
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Joined: Tue Apr 26, 2011 13:54:34
Posts: 30
Location: Göttingen,Germany
Can someone please give me the
part# of the front two-piece suspension holder?
Thanks.
Mike


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 Post subject: Re: Rear toe in
PostPosted: Mon May 20, 2013 20:23:41 
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Joined: Sat Jun 18, 2005 12:48:40
Posts: 1357
Location: Windsor, UK


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 Post subject: Re: Rear toe in
PostPosted: Mon May 20, 2013 20:41:22 
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Joined: Tue Apr 26, 2011 13:54:34
Posts: 30
Location: Göttingen,Germany
Thanks Skiddins.By the way,have you started testing the Reflex Racing Springs.Got mine last week.
Mike A


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 Post subject: Re: Rear toe in
PostPosted: Mon May 20, 2013 20:50:29 
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Joined: Sat Jun 18, 2005 12:48:40
Posts: 1357
Location: Windsor, UK


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 Post subject: Re: Rear toe in
PostPosted: Tue May 21, 2013 10:18:12 
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team driver
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Joined: Fri Sep 10, 2004 19:27:57
Posts: 977
Location: Sweden


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 Post subject: Re: Rear toe in
PostPosted: Tue May 21, 2013 11:34:04 
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Joined: Thu Sep 20, 2012 05:42:54
Posts: 61
Location: Shanghai


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 Post subject: Re: Rear toe in
PostPosted: Tue May 21, 2013 12:50:46 
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team driver
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Joined: Fri Sep 10, 2004 19:27:57
Posts: 977
Location: Sweden
If you need the car to be more stable on-power, perhaps you can try a softer rear spring, or more droop in the rear (more uptravel).


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 Post subject: Re: Rear toe in
PostPosted: Fri May 24, 2013 12:30:53 
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Joined: Thu Sep 20, 2012 05:42:54
Posts: 61
Location: Shanghai
Now I am back to 3 deg toe in rear and still have good steering. 3000 diff oil, front damper in 3rd hole and 2 piece susp holder in front did it!
The suspension holder made a big difference. I think the front got alot of grip in high speed and felt very smooth.

Thanks guys!
Edit: also went to 2.5 spring in the front from the progressive one. Think it worked better.


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