FYI, Robinson Racing Pinions are junk. I purchased a large quantity of their 12T 48P gears, and like he said in his reply, there isn't much meat for the set screw.
I've had 6 of them fail. I called them and let them know of the situation, and they told me I must be using them for the wrong application. I told him I was running them in a traxxas stampede transmission, and he said he couldn't help me.
Here you can see where the screw goes in on the robinson gear.
And here you can see how the set screw goes into the Losi pinions that I currently use.
With the product support I got from Robinson Racing, I will never buy anything from them again.
I've had 6 of them fail. I called them and let them know of the situation, and they told me I must be using them for the wrong application. I told him I was running them in a traxxas stampede transmission, and he said he couldn't help me.
Here you can see where the screw goes in on the robinson gear.

And here you can see how the set screw goes into the Losi pinions that I currently use.

With the product support I got from Robinson Racing, I will never buy anything from them again.
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