Will try that with the toe-in. I could just increase gearing, but this wouldn't allow for running through a full pack without heat issues anymore. I think with the 1515 this would be even worse, it's a lot smaller and lighter than the 1717.
The XL2 was my first choice also, it's reasonably priced, quite small and has a really nice set of features, especially the datalogging is very nice.
But after thoroughly investigating and getting a broken one (to get an idea about mechanical/cooling design) I found some problems with it:
- cogging
- poor electrical design, something with the FET drivers and too long PCB connections (User "Uber" on RCGroups found out), Castle solved that by having the FET driver manufacturer make special drivers only for Castle instead of fixing the design
- Castle doesn't seem to care about it, no firmware updates, no comments or mitigations on the cogging issue
- poor cooling design
- mechanical design unsuited for car usage with bumps, shocks, vibrations and dirt
- They still seem to go up in smoke from time to time with no apparent reason and seem to be more delicate in general
I have now ordered an Alienpowersystem 8S 250A sensored ESC and a TP5040L (58x82mm, 836g) 1260kv sensored motor.
Don't know if that one is more reliable but it was cheaper and shouldn't have cogging issues because of the sensor.
No data chart, don't have a data logger, but I have found this on another forum:
I'ts a HPI Firestrom with Poseidon 1717 2200kv Castle knock-off, gearing for 155mph and same weight as my Slash. Topspeed was 123mph.
300Amps would be about 6kilowatts. Assuming 90% efficiency (probably too high ...) this would mean 600W of heat that has to be dissipated somehow.
