This is a little upgrade made to a stock 1/24 Scale Redcat Racing Sumo work on 7.4 V. Lipo Batteries. Hope you find this useful :)

Sumo Lipo Conversion

The Sumo runs on 4 AA batteries which equals 6V DC, we are going to convert the Sumo to be able to use a 7.4V Lipo battery without adversely affecting the stock receiver/speed controller.

Step 1:

Unscrew the battery compartments on both sides of the chassis – each holder is fastened using 2 screws.

Step 2:

Cut all wires close to the battery holders, you will notice one wire ties the battery holders together between the two sides, this can be removed completely.

Step 3:

Schoetke Diodes create a 0.7V voltage drop across each diode, in order to reduce 7.4V to 6V we will need to solder 2 Schoetke diodes in Series to create a 1.4V drop.  Since the Sumo Draws more current than a single set diode can handle safely, we will be soldering 3 sets of 2 diodes in parallel, the positive input will connect to all 3 sets at the input side and the output will come off all 3 sets at the output side, this allows the current to spread out through 3 individual sets of 2 diodes. You can use more than 3 sets but for the standard motor, 3 seems adequate.

Thank you for Reading.

You can find out more about this, and all Redcat products at www.AmazingRCstore.com
Will this modification work on other RC brands, or just those that you sell?
I am not familiar with this modification in any other brand, but this should be able to be done to different models that share the same general features :)

About This Instructable




Bio: Amazing RC Store is your Local Redcat Racing Dealer. We are located in Brampton, Ontario. Redcat Racing offers a wide range of great Products at ... More »
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