XRAY - Model racing cars

It was worn out after several gallons used during 5 full practice days and one large race weekend. I was also running a mod ZX12 with A TON of torque.

oh i c..zx12 surely.ok catch you later,gota race to prep this nexweekend.
btw,have you tryout the monoblock engn mount with stiffner and or 4mm chasis?

I had one clutch bell that wore a white shoe out in 30 minutes. Then I had a 2nd clutch bell that I'm still using the same white shoe. It's been in the car for 3 race days. I tighten the spring down all the way and back it off 1/2 to 3/4 turn. Seems to always be close.

As for the clutch bell that eats the white shoes, I polished it with some 400 grit paper and it's all better now. I do find that the clutch engages harder and sooner. Most likely because the polish grips the shoe better. Now I need a stiffer clutch spring. Is Xray going to make one?

I too have blown the Max SL3. No fault of the engine. I had an exhause spring break druring the race. Combined with a cracked exhaust port seal, the engine didn't have a chance. The exhaust mannifold was 1/2 on the exhaust port so it was losing pressure but not sounding louder than norma. It was on a large sweeping track. All top end.

For those who get the SL3 MF with the pipe and header combo, use 2 manifold springs around the engine. Even with the one that comes in the kit, at high revs, there is so much pressure that the spring cannot keep the header tight on the engine. You can actually see the header trying to push off the exhaust port with only 1 spring fixed.

hey guys..can you share with me about the trust bearing wear out/damage issues?i broke mine during my 1st a main,i think the advantage is the damaged still allow you to race without jamming the centax like orther brand trust bearing,just i see the lifetime bit shorter..
what do you think?

my clutch endplay 0.15-0.2,clutch gap 0.75.

What for a bearing grease did you use for trust b ? I race with my trust bearing over 3 calons and hadnt any problem. My endplay is 0.10 and clutch cap 0.75. Not difference as yours? I'am using mugen süper grease and this is the best . If your clutch settings are right you should change your grease and you will see this help much!

Your end play is too much and should be around .1mm. More end play causes more unwanted stress on the thrust bearing as the entire end bell assembly will slam it together on engagement.

I'm actually running a .5mm air gap that has great engagement and much less wear on the shoe. I'm also running an SL3 with a 10mm spring setting. With the small air gap, the emphasis for me has been adjusting the spring setting in .1mm increments until I found the right engagement.

The manual calls for a .6mm to .7mm air gap though. When I tried increasing it above .7mm I found that the flyweights were being stressed too much and cracking around their pin holes. I even tried 1.0mm and the flyweights actually wedged in between the flywheel and the clutch disk and locked up the clutch.

Make sure you grease the thrust bearing at least every other tank too. I went through three of them until I started to grease it every other run. Since then I've been using the same bearing (at least two gallons) without any problems.

With my 8th scale car I replaced the middel ring with the balls of the thrustbearing with a brass spacer in the same size as the metal rings, that works fine to me.

Ceramic spacers are on the drawingtable

What grease do you use?

YGPM

I notice the disc brake (334110) rubbing against the brake cam post (334040).

It always got thread misaglin when I screw the (337252) aluminium adjusting nut into (333310) composite upright rear.

thanks

Happened to me too. Bearings in the wheel hub froze after about 3 hours of run time on mynew NT1.... Later, my engine kept flaming out when idling, turned out the trust bearing broke! I ended up using another brand thrust bearing

I have been using the asscociated black grease on the thrust bearing, is this ok or should i be using somthing thicker?

I've used that too but had beter results with a thinner grease.... i had a bearing failure with that too, and it seems to be more in the frequency of lubing then the quality of lube...

Is this a know problem at Xray? Will you guys provide a different trust bearing? I'm using one from another brand and that seems to work fine...

Any tips on when to use 26 side pulley over the 25?

I've found that marine grease works well and lasts. I've forgotten to grease it up for an entire weekend and never had an issue.

When running the 26T it gives you a 1:1 ratio, It will be good to use with HIGH traction/fast sweepers to allow the car to have more free roll.

rfy, you will also find that using the 26t pulley will give you a little more on power steering,especially through fast sweepers

Yes I agree. But if you are running a small tight track, it will make the rear of the car loose if you are running too much stager between the front and rear.

Wish to know if Xray are in planing to produce spring steel pinion. Especially for the 15 & 16 teeth pinion.

I am not looking for speed for weekend bashing but something in durability.

I think, the original one works great and have less wear than other brands!