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XRAY - Model racing cars :: View topic - What is the difference between L1 L2 and the H1 H2
XRAY - Model racing cars
https://setup.teamxray.com/xsetup/legacy/

What is the difference between L1 L2 and the H1 H2
https://setup.teamxray.com/xsetup/legacy/viewtopic.php?f=8&t=10431		 Page 1 of 1
Author:  cs-james [ Sun May 02, 2010 00:08:17 ]
Post subject:  What is the difference between L1 L2 and the H1 H2
Anyone? What will one versus the other due?
Author:  big_gord24 [ Mon May 10, 2010 12:01:20 ]
Post subject:  Re: What is the difference between L1 L2 and the H1 H2
This is an excelent question considering Hudy is recomending them for the asphalt setup. Also these arent even listed as option parts for a T3, also no part number or description on the Xray website. A main hobbies has a picture and a part number 303035 but they look the same as the L1, L2 roll centres with just different numbers.....So Xray whats the advantage for asphalt?
Author:  David_Ehrbar [ Mon May 10, 2010 17:21:16 ]
Post subject:  Re: What is the difference between L1 L2 and the H1 H2
H1/H2 has a little bit higher position for the ball joint, so you get a lower rollcenter and less camber change.
I often used it on carpet in the rear, it made the car more stable.
Author:  big_gord24 [ Tue May 11, 2010 04:47:34 ]
Post subject:  Re: What is the difference between L1 L2 and the H1 H2
Author:  Martin Hudy [ Thu May 13, 2010 12:49:06 ]
Post subject:  Re: What is the difference between L1 L2 and the H1 H2
Hey guys,

H in front makes the car to turn easier so you have more smooth in corner reaction

H in rear increases the cornering speed and out of the corner steering.

In generall, H roll centers are placed higher than standard L roll centers and this means that H roll centers allows the car to roll more. When the car rolls more you get mainly higher traction but less in-corner steering. When you change from L to H roll centers, do not forget to put extra 1mm shim above the c-hub or upright to make the linkage angle same as with L roll centers
Author:  V2Xray [ Sat May 15, 2010 10:57:39 ]
Post subject:  Re: What is the difference between L1 L2 and the H1 H2
Hi Martin,

Would lowering the roll center holders to -.75 have the same effect as using the H1 and H2 with 1mm shims?

Thanks
Karl
Author:  Martin Hudy [ Sat May 15, 2010 14:12:42 ]
Post subject:  Re: What is the difference between L1 L2 and the H1 H2
no, because you are changing the position of the arm which has different set up effect. If you use -0.75 roll centers, than you get much more rear traction, but you will decrease cornering speed. If you use +0.75, then you get opposite effect, less traction, but super high cornering speed
Author:  V2Xray [ Sat May 15, 2010 17:59:25 ]
Post subject:  Re: What is the difference between L1 L2 and the H1 H2
Thanks
Author:  nnick [ Wed May 26, 2010 14:30:48 ]
Post subject:  Re: What is the difference between L1 L2 and the H1 H2
What is the code for the H1,H2?
Author:  sidecarphil [ Wed May 26, 2010 18:39:28 ]
Post subject:  Re: What is the difference between L1 L2 and the H1 H2
the Xray part number is 303035 you get 1 of each per pack H1 and H2

i also ordered the Alloy upper adjusters and the ball joints for the outer so all i need to do is undo 2 screws and the whole thing is off
Author:  g26er [ Wed May 26, 2010 21:18:50 ]
Post subject:  Re: What is the difference between L1 L2 and the H1 H2
Author:  James.A [ Tue Jun 01, 2010 10:49:34 ]
Post subject:  Re: What is the difference between L1 L2 and the H1 H2
What is the correct Xray part number for the H1 & H2 Roll centre blocks

The 303035 part number quoted above does not come up on the Xray site search function or Xray shop.
Author:  B3nzaah [ Tue Jun 01, 2010 10:56:30 ]
Post subject:  Re: What is the difference between L1 L2 and the H1 H2
Part no is correct.




or
Author:  James.A [ Tue Jun 01, 2010 13:14:36 ]
Post subject:  Re: What is the difference between L1 L2 and the H1 H2
Can anyone from Xray confirm this as I mentioned the part number doesn't come up when u use the Xray site function or go through the option or STD parts lists
Author:  Martin Hudy [ Tue Jun 01, 2010 15:37:08 ]
Post subject:  Re: What is the difference between L1 L2 and the H1 H2
Part number for H roll centers is - 303035
Author:  James.A [ Tue Jun 01, 2010 16:49:46 ]
Post subject:  Re: What is the difference between L1 L2 and the H1 H2
Thanks Martin.
Author:  sidecarphil [ Tue Jun 01, 2010 19:40:58 ]
Post subject:  Re: What is the difference between L1 L2 and the H1 H2
i was just going to post a picture of the packet up to conferm that was the part number LOL
Author:  brano [ Wed Jun 02, 2010 12:11:23 ]
Post subject:  Re: What is the difference between L1 L2 and the H1 H2
Author:  Homer [ Tue Sep 21, 2010 05:58:23 ]
Post subject:  Re: What is the difference between L1 L2 and the H1 H2
Hi guys, i just purchased 2 pack of H roll center. Plan to use on my XRAY T2-009 rubber spec running MOD with 4T brushless. Without knowing much, i go ahead and ordered it. Is it ok to install it to both front and rear? Any suggestion for my arm position? +0.75, -0.75 or 0 for my front and rear arm position? Racing on Asphalt at the moment and will race indoor carpet this coming november. Any different setting for arm position on different track? Thanks

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