Originally Posted by rigor

I'm looking for some help from regulars at either OCRC or WCRC in Orange County / SoCal.

I recently picked up a very lightly used B44.1 . Got some help from a team driver at OCRC on the diffs and slipper settings. I dropped a brand new Novak GTB2 ESC and a Reedy Sonic 6.5T into it. The problem is, the car doesn't really feel any (or much) faster than my B4.1 with a Tekin RS and Tekin 13.5T in it. I had another guy at OCRC that used to run 4WD buggy class drive the car, and he also expressed it seemed 'slow' for that much motor.

I left the timing on the Reedy 6.5 alone from out of box, and I'm running a 81 spur with a 21 pinion. I checked temps on the ESC and motor with a temp gun after starting with a 17 pinion, then a 19, and now on the 21. Everything is free spinning, no binding, no bad noises from the gears. I've reset and double checked radio and ESC settings to make sure I'm getting full throttle, etc.

I'm starting to wonder if the issue is my batteries. I picked up a couple Turnigy Nano-Tech 5100mAh 65-130C 2S Lipos. I also have similar (same brand) batteries in my 2WD B4.1, and I thought they seemed really good, especially for the price.

Other then the car isn't as fast as it should be with this electronics setup, I'm having fun with it and it handles pretty well with the stock settings. I'm really hoping some local folks that read here can offer me to meet up with them to help further figure my issue out. I'd love to try another battery someone can offer to see if there is any major difference there before I plunk down a large chunk of cash on one for no good reason. Another thing is maybe swap my motor into your B44.1 to check it out. I have a good soldering iron and lots of soldering experience, so the swap would be very easy.

Please respond here and/or PM me. I'd greatly appreciate it, and am willing to buy your practice or race time that day for your assistance.

Thanks,
Jesse