Savage XL-E

[Janezki]

My project was halted for a while because of my overwhelming work schedule, but now when I've had few days' vacation I've managed to do quite a lot - so here's what has happened so far:

- Kershaw direct drive reversed for the sake of weight balance and to get the lipos between the TVP's
(gearbox needed quite a lot of trial & error shimming before I got it running smoothly)
- stock radio box removed and replaced with Fastlane servo plate
- broken steering servo & front diff fixed (these broke while my last bash session)

I had one KB45-10L 1800kv motor lying around, so I really wanted to give it a try and see how it runs. The kv-rating is a bit high for 6S but hey, just for the heck of it...

Here's a few photos from yesterday - I was in a hurry to get my truck into running condition so I had to use few "temporary" solutions to get all in place (mainly the esc & receiver).
(click for big pic)






The KB45-10L is quite a power plant - even though there was no grip at all on snow I managed to pull over 2000 watts from it with 6S 5000mAh 15C Zippys according to Eagle Tree.

Here's some chart data:

(there's some glitch there with +8600W & +80V peak values :))

Gearing used was 20t pinion, 47t spur.

I measured 60°C (140°F) from the motor endbell and the ambient temperature was -1°C (30°F).
Summer temperatures may be too much for KB45, but I'm planning to use a different motor then.

The car handled pretty well - although my driving was mainly on flat surface with few minor jumps from snow bank, I'm quite pleased with the weight balance.

Only problem I had was with the pinion which wasn't hardened. It was simply ruined just with one set of 5000mAh batteries...



Next step will most likely be upgrading the diffs.