Quote:
Originally Posted by qatmix
sorry I dont understand (never used nitro) The gearbox has an exposed Spur. I have a motor with a mod-1 pinion, dont I just need to mount the motor on the plate so it it spins the spur.
What are the bearing things you are taking about? Really sorry to be a noob about this..
here is a pic of the truck
http://tamiyaclub.com/showroom_model...22524&id=16972 |
Just had a look at the undressed pic, I didn't realise it was like this but it makes things a lot easier as the spur is on the end of the shaft like that.
If this were my project i'd try an HPI Vorza motor mount, it looks like you've got enough room on both sides of the spur at the rear of the chassis (but measure the overall length of the motor just to make sure):
https://www.hpiracing.com/en/part/103661
It accepts any 1/8th motor with a 40mm outside diameter and you just need to make four elongated holes in the chassis to adjust the gear mesh/play with the gearing. Also because the TNX chassis isn't the lowest point on the underside of the car, the bolt heads won't need to be recessed to prevent them catching. You can see how it fits on the Vorza chassis here to give you an idea (you might have to hack away some of the grey gear cover to give enough room for the pinion):
https://www.hpiracing.com/en/kit/101850
Talking about the pinion, I don't know if the TNX uses MOD1 or 32DP pitch on the spur, this is very important. You need to be absolutely sure the pinion and spur mesh properly before actually running the truck, maybe The Hobby Company or Tamiya in Japan can help with this.
Regarding bearings, they basically support every rotating part in the drivetrain. You can find out more here:
http://en.wikipedia.org/wiki/Bearing_(mechanical))