TM-2 Spur gear

[DrPaul]

Its been widely reported on the various RC forums regarding the trouble some people are having with the TM-2 spurs. I have seen a few of the off-white kevlar spurs and after doing some checks there are three actual problems.

For a 48dp 85T spur the diameter is incorrect, this is the reason why the teeth are miss shaped and the spur is noisy and wearing so badly.

The hole in the centre of the spur should be 5mm to centre correctly on the shaft rather than 8mm and why some people are resorting to having to fit bearings and shims to get it to run correctly.

The slot is not required for the TM-2 and can be a problem locking up the spur on the slipper plate pin and stripping teeth if assembled incorrectly.

I am currently having some spurs made which will be the correct diameter for a 48dp 85T spur and that will have the correct size centre 5mm hole with a recess on each side for the slipper plate shoulders to sit into and without the slot. I should have samples by the weekend so I will give you an update on how they run and their availability once they have been tested.