1:8 Robitronic BR 50 Trophy Truck - Brushless

[othello]

I wasn't too happy with the appearance of this truck with those small buggy tires. I therefore fitted truggy tires to the BR50 Chassis. Crimefighters LPR with half offset seemed to be the most pleasing choice.

I made some preliminary test runs without body (Body had to be trimmed somewhat)
. video on snow
. video on asphalt

Eventhough those runs did not show how the chassis would perform with grip i decided to trim the body to fit the bigger truggy wheels.



I had to wait a week to run the modified BR50 on gras (without snow). Well as good as it looks, the track width is still to narrow to make it corner properly without tipping over.
. video on grass

I therefore decided to mount the BR50 body on the Robitronic Mantis truggy Chassis (with truggy arms).



First off i mounted crimefighter tires with standard offset and made a similar test run.
. video on grass with truggy chassis and standard offset truggy tires

Those tires had less grip due to their harder XTR compound. No tipping over due to lesser grip and a wider track width.

To get even more track width i mounted my half offset crimefighter tires


. video on grass with truggy chassis and half offset tires

To complete this test series. I made a short run with the BR50 chassis and buggy pin tires.
. video on grass with buggy tires

With buggy tires the car felt more agressive and accelerated better without wheelie tendencies (tires had better grip level). I used a 15t pinion with truggy tires and an 18t pinion with the buggy tires to compensate tire diameter. The narrow track width of the original BR50 chassis is tricky at good grip level and the car might tip over when cornering: less agressive tires should be a better fit. When it comes to its appearence i prefer the look with bigger truggy tires. But even with half offset truggy tires the BR50 chassis is to narrow to get good cornering without tipping over. It's then more suited for fun driving. Truggy tires seem only to work when combined with the wider truggy chassis (with truggy arms).

I will extend my tests when snow has melted completly around my place. My eagletree logger measured power peaks around 1900 Watt (80 Amps) with truggy tires and around 1500 Watt (63 Amps) with buggy tires. Average Watts (450W as oposed to 360W) were higher with truggy tires.