With 106/38 you'd get 5.3
With 110/38 you'd get 5.5

Don't know if either will fit the Xray though.

Where is interference occurring? Are you suggesting the pinion won't fit?

I have 96/43 right now on my T4 no dramas.

Between motor (housing) and upper deck (Spur's diameter too small)

Take a photo. That sounds very odd.

Does your motor not have a chamfer or something!

Don't have my car around. But tried to ilustrate my problem in the following PrtScn [see red arrow]. Need to choose a bigger spur. I am going to try 104-106 know.

http://www.rctech.net/forum/members/...r-top-deck.png
Source: Xray T4 2016 manual

38/90 minimum 5.00

Tips are good.

Your motor doesn't have aggressive front can cuts or chamfer I presume.

My motor doesn't touch the top deck even when at max rearward position on the motor mount.

http://i16.photobucket.com/albums/b2...psynjmsyxn.jpg

http://i16.photobucket.com/albums/b2...psyxs7ivhq.jpg

Putting the 1mm shim will give you a little more room.

Two things, firstly, your motor conveniently has a cutout where it would be against the top deck with some other motors.
Secondly, I can see from the rear motor screw that your motor isn't quite fully rearward in those slots, though it won't go further back, which tells me your motor can is actually up against the layshaft mount on that side ;)

Good spotting. Be an odd motor to manage to get further back....

And yes the cutout does help a little.

But I'm at 96/31 like that, so quite surprised 100/35 doesn't fit.

I had the same thing recently, spent ages looking at the top deck and wondering why I couldn't get it to touch the motor no matter how far I pushed it back..... the realised it was fouling elsewhere :smile:

I've been noticing that some of the team drivers have been running the ARS with aluminum c-hubs compared to the standard hard or graphite one...what would that do to the handling characteristics??

All about gaining corner speed.

They are running it at Riccione this weekend - first Asphalt ETS for the year.

ARS can be tuned to give more or less rear toe as a car rolls.

Typically, it's set up to lower the toe mid corner and this gives less rear grip and in turn more steering.

No I understand that but I've been noticing more of the team drivers running the aluminum C-Hubs for the ARS set-up and wondered why or what that gives you