XRAY - Model racing cars

Anyone? What will one versus the other due?

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?

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.

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

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

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

Thanks

What is the code for 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

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.

Part no is correct.




or

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

Part number for H roll centers is - 303035

Thanks Martin.

i was just going to post a picture of the packet up to conferm that was the part number LOL

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