Shunting a G-Endbell

[SKR]

Bench racing at DCU last week the discussion came up on end-bell modifications. As promised, here are the mods that I do on my end-bells for MM/PS and Pro Mod. This modification allows more pressure to be applied on the motor brushes. This technique will wear out brushes quicker. I like using Wizzards replacement brushes. You can get 5 pairs for $5.

Part #E20 STOCK G+ REPLACEMENT BRUSH & SPRING 5Pr

Using a dremel with a cut off tool attached I added a slot on each side of the end-bell.


I drilled a hole on each side where I made slots so that shunt wire would sit on top of the brush spring arm. The slots are to house the shunts.


Installing the brushes


Take a .008" pick up shoe spring and cut in half.


After some slick maneuvering, cussing, few beers and a few more beers I ran the shunt wire through the hole on the side of the end-bell and through the cut spring.


Assembled


I drill holes in the pick up shoe holders and run the other end of the shunt wire through.

[nosubfor3]

Very sweet. Couple of questions. Wiz no longer sells the replacement brushes. Do you run braids also? Or do the shut wires just rest on the p/u shoes? And do your front wheels on the mm/ps touch the track?

[SKR]

bummer, I didn't know they discontinued them. I know Scale Auto is working on a new end bell, not sure when it is suppose to be out.

My wheels barely touch, wire rest under the PU spring and PU shoe. I haven't had luck with braids, might have to revisit them.