Heat Sink Installation and Modifications

A heat sink is a good way to help keep your motor cooler while running your Stampede. While the heat sink does a good job, it's not a substitute for proper gearing. The heat sink I use on my electric Stampede is the Long Radial Clip-On Heat Sink by Associated. Use of this heat sink will require a slight modification to the transmission housing. You can use the Short Radial Clip-On Heat Sink by Associated to avoid making these modifications, but I feel the longer heat sink is the better choice. There's only a dollar difference between the two, and the modifications made to the transmission housing do not affect it's strength in any way. The whole purpose of a heat sink is to bleed off as much heat as possible, and the larger heat sink allows more heat to dissipate than the smaller one does.

You can also use the GPM Racing Spacer/Cooler, with the Long Radial Clip-On Heat Sink, to avoid cutting the transmission housing. It will move the motor out enough to prevent the clip-on heat sink from touching any of the motor leads. This is another method to prevent you from having to remove a little more of the plastic on the right-half of the transmission housing.

This first image shows a dotted outline of the housing section that must be cut away in red. If you do not use the GPM spacer you may also need to cut away some of the housing marked in green. When the plastic is cut away there will be two screws that are no longer necessary, you can keep these in your toolbox as spares. Again, this does not affect the strength of the transmission.

The next two pictures show what my transmission housing looks like after this modification. Notice that I'm using the spacer and only cut what's shown in red in the diagram above.

Below you see the clip-on heat sink and the spacer. My spacer is actually discontinued item from Trinity, but is very similar to the one offered by GPM.

This image shows you the way the motor, spacer, and clip-on heat sink will look when installed on the Stampede.

Finally, an image of the finished installation.

For a comparision, and to show the current configuration I'm using, here's the transmission with the other side of it trimmed as well. Trimming both sides in this manner prevents you from having to use the spacer.