Project: The Ultimate LST2 Race Truck

8/6/2007 by Gary Katzer

Copyright:© 2007 Horizon Hobby, Inc.

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In this article...

Page 2: Chassis
Page 5: Refining the Electronics
(continued from previous page)
Cluster of images. JR Z-1, Spektrum module and reciever

Here’s my favorite radio combination: a trusty and easy-to-use JR Z-1, Spektrum Pro Series Module, and super-tiny SR3500 Micro Receiver. This is one potent combination.

The stock electronics work well, but there can be benefits to swapping out to different gear here. I am very picky when it comes to my radio gear; I like what I like. For this reason I opted to replace the stock JR XS3 radio with my trusty JR Z-1.

The stock servos get the job done, but for racing purposes I wanted something that centered a little more precisely and featured a bit more torque. My first inclination was to install JR 8800T servos for steering and throttle control, but I decided against it. While I have used this setup in my 8IGHT-T before, that only uses a single steering servo. With the additional current requirement of the second steering servo, I installed JR 4800T’s instead. The 4800T is the analog version of the 8800T and features very similar specs. The major difference in this application is that by using analog servos the current draw is reduced. The three 4800T servos dropped right in with out any modifications.

Shot of the JR 4400T Servos

JR Z4800T servos fit the bill exactly for this application. They provide both the speed and torque I needed.