Xray T4 '13
#1996
Tech Master
iTrader: (43)
Haha. I had to let everything soak in. We are pretty certain at this point that.... A: At first I wasn't tightening the motor screws enough. (I've wrecked enough end bells in my 30 years of doing this that I have learned to be a little more gentle on things) And .... B: In all my messing around I had partially stripped on of the holes in my motor. Longer screw with a washer to get a little more bite in the threads and I drove the car like a maniac all day with no problems. Figuring this out was a group effort between some really great people. Shawn / Snowy and Paul L really were determined to get this figured out for me and for that I say thank you Thanks to all of you as well for listening to my rants
#1997
As he stated he had a stripped out motor screw so basically running one motor screw. The boards at his track are also screwed to the floor so any hard hit the motor would shift or if jamming the brakes on from full trigger could also throw the motor forward in the mount.
Glad we could help and come up and race for the day.
Glad we could help and come up and race for the day.
#2001
#2004
#2006
OK, point taken.
It's just strange that when I asked around in the pits at a big event a couple of weeks back (100 drivers and LOTS of T4's), Only one person knew of anyone who had stripped a spur, and that was after a massive crash.
Are you running 48dp or 64dp?
Could there be a small piece of crud stuck in between a couple of the teeth?
Have you tightened the nut up very tight, or just enough?
Are your spur gears truly round or is there a manufacturing problem?
It's just strange that when I asked around in the pits at a big event a couple of weeks back (100 drivers and LOTS of T4's), Only one person knew of anyone who had stripped a spur, and that was after a massive crash.
Are you running 48dp or 64dp?
Could there be a small piece of crud stuck in between a couple of the teeth?
Have you tightened the nut up very tight, or just enough?
Are your spur gears truly round or is there a manufacturing problem?
The nut and all other screws tightened as much as possible without stripping threads or hex heads.
As for the spur that stripped, it's hard to tell why as the teeth were completely shagged. I only worked out what had happened when I found the motor forward after replacing the spur and inspecting after running noticing the teeth just engaged, there was nothing stuck between the teeth.
I expect the Spur to be true as it was new.
There have been a couple of other suggestions flagged as a work around such as using a screw with 2.5mm hex, I'll just have to explore this or other options.
#2007
#2010
Tech Elite
iTrader: (88)
A couple of things about the T4 from my testing...the car rolls a lot and as such light weight bodies make a huge handling difference on this car more then the T3. The car is the best with Lightweight bodies. The car stays flatter and tends to have better corner speed.
The shocks need to be maintained...I have personally noticed that the o-ring on the bottom tends to allow more oil leakage then previous versions. This makes for a smoother shock but also more maintenance. I will say that the shocks are very nice and I am pleased that Xray finally included aluminum shocks with the kit.
I think overall the springs designed for this car tend to be too soft. Even the 2.9 springs feel too soft to me, especially for the slower classes. You end up scrubbing off speed with the softer springs, at least with my setups . I am pretty sure that Xray was concerned that the shorter springs would feel stiffer on the car, but in practice they seem a tad too soft.
With the additional amount of chassis roll it tends to gunk up the motor side of the chassis very easily. Make sure you keep the bottom of the chassis clean.
As weird as it sounds I am working on trying to make the car roll less to keep if more efficient through the entire corner.
Like most Xrays I have driven the car seems to suffer the most mid to exit, but I will tell you that the T4 has improved this over the T3 platform. Now it seems the car rolls to deep into the middle and kind of gets stuck. With some more setup work I think this can be fixed, but not quite there yet.
Setup wise this car is different then the T3...and it reacts to changes better then the T3 so far.