HackFab Evolution Dual Axle R/C Pulling Sled - Pre-production model
In 2021 we purchased the production rights from JS Chassis Works who originally designed the Evolution Tandem Axle Pulling Sled. Having sold 50+ of them through the years, it was a tried and true sled design that worked well for the backyard enthusiast or even club competition. It's taken us a while to get these off the ground since acquiring the designs, due to a combination of having other products take priority as well as trouble sourcing parts and streamlining processes.. but we're close be being ready to roll out "production" sleds that we feel confident enough to bare our name.
We made only slight cosmetic changes from the JS design. The core functionality should be that of the original.
These are "pre-production" and we're classifying them as that, as we made a series of small changes thru assembly and testing from version to version. They all seem to work fine, but some things may change from the final version (mostly having to do with tolerances and chain tension). If you end up with one of these and have issues, just send us a message and we'll work with you to get it up to optimum running condition.
Designed to meet NRCTPA specs and top out just after 30'. Top out is adjustable depending on where you put the stops for the weight box and could be altered further with gearing changes. Tire diameter will also affect end top out.
Lightweight sled design (under 9lbs w/o tires) cut from black FR4 G10 fiberglass
1/8" aluminum skid pan
Weight box and all axles fully supported and riding on bearings. The weight box rides on 15mm linear bearing rail with dirt sweepers
Stainless Steel chain and stainless steel hardware
Assembled pulling sled and skid pan (lexan mudguard pictured is an optional upgrade)
DOES include an eye hook, length of chain, and s-hook to attach to the pan. Pan will ship detached from sled for easier shipping. Screws to attach pan are included.
12mm Hex Wheels and tires of choice (100mm in height or less is ideal). As an OPTION, we are offering cheap sets of 4 INJORA 100mm crawling tires and plastic wheels (require gluing). JS Chassis always recommended short course tires such as Pro-Line Slide Jobs or similar on 12mm wheels which should also work well.
Assembled Sled Frame: 24" long x 8" wide x 8" tall (with tires) (approx 30" long with skid pan)
Weight box: 8" x 8" x 3"
Skid pan: 8" x 10"
Optional Mud Guard: 17" x 8"
We did not apply any threadlock to the gear set screws or other components on the sled while assembling these. It is highly recommended that you do so prior to running it. Some additional adjustments may be needed depending on your preferences.
Also note, in photos, skid pan with lexan mud guard is flat at the back. This was an original prototype and we only have 1 of these. If you prefer that over the production style shown with a 45 degree lip in the rear, let us know. First come, first serve. All pans moving forward will have the rear lip.
In video below, a highly customized CEN F450 using TRX4 2 speed trans and axles using 3200kv Spektrum Firma motor on 3s pulling roughly 25lbs.