Originally Posted by
favo
Hey Guy’s
Just a quick question I have a NT1 ‘08’.
The car is great to drive having heaps of fun with it only still learning how to drive it.
I have put around 2ltr of fuel through it. But so far I have replaced the left hand side front diff bearing (941016) due to it melting the composite adjuster ball-bearing hub (332070)
And last night at racing the front left hand side inner (941016) wheel bearing I found half way through the race the car was not right.
We stopped the car and found that the left side wheel was not right we removed the wheel and found the composite steering block was starting to melt due to the bearing locking up.
Is this a common thing with the NT!?
. . .
Thank you
Favo I too have had one of the Xray bearings fail. This bearing was on the right side on the 2-speed shaft. The small bearing holder (the thing that spaces the bearing evenly apart) had decided to come apart. The car has had about 2100 laps on it (around 11.5 hours) of run time (maybe a bit more) on it. 1 bearing in 11.5 hours of use is reasonable performance given how much punishment the car takes. Overall I find the Xray bearings to be of high quality. The other bearings on my car are completely fine. Sounds like yours might have been damaged in a crash.
On cleaning, no hard and fast rule that I know of. I clean the bearing with motorspray and oil them with either Acer's Syth lube or MuchMore's bearing lube. There are dozens of makers of bearing lube. Any should be good but remember to use something that says it's bearing lube. Not all lubes are meant for bearings. I simply check my car before each weekend I run it and the car runs great weekend after weekend. I disconnect the side belt and push the car back and forth feeling if there is any resistance or if there is any squeaking. If there is, likely means a bearing is gone.
Also, don't forget to clean and lube your one-way bearings. If these die, they are very expensive to replace. I clean these often.
On ceramics, I've tried 'em. They are definitely lighter than steel and will lighten the car's weight if you use them. But, I had not found they lasted any longer than steel. I tried a few different brands (Boca, Acer, Ebay brand X) but found they did not improve lap times. I stuck with the manufacturer's bearings (which at that time was Mugen when I drove the MTX). Also, I found the bearing's quality wasn't due to material, it was due to manufacturer. Being ceramic doesn't mean it's good. It means it's ceramic. I'd say Xray's steel bearings are better quality than a lot of the cheapy brand X ceramics you find on Ebay. A couple of years ago I met 2006 1/10th IFMAR champion Keisuke Fukuda at the Asia Mugen Cup and asked if he used ceramics. He said no. He used Mugen (which are steel). If you've never tried ceramics, I'd say give a set a try and make up your own mind. In my opinion I thought the best of the bunch based on price vs. quality was Acer.
Good luck.
Rob