Originally Posted by splking1

This is kinda crazy. I was able to drop another 22 grams off the car. I normally run for 5 minutes and my temps are 160-165. Today we were doing 7 minute heats and my motor only got up to 135 degrees. I was pretty shocked. I was able to turn the timing up 2 degrees on the motor and temps got up to 150. My car should be close to the 1500 mark i think this week with the lighter battery.......maybe dropping the weight helps

Thanks BillPear for all the help!!!

Originally Posted by ktmderf

I've been having trouble with heat with my B5ms. I have a car for both stock and mod. I haven't seen a whole lot about that trouble in this thread but I did see where dropping weight has made it better especially in stock. My stock comes in at almost 1600 grams but I have it geared at 29/75 which is pretty conservative compared to others and with 30degrees of motor timing in blinky mode. So I don't quite get why it's getting hot. Is it the weight? I ran the same setup on my 4.2 and it used to come off just warm. I don't see how some guys are running gearing like 69/32 with 17.5 and not getting way too hot? I'm running on an indoor track that isn't big but it isn't tight. Even with my mod car I'm running a Reedy 7.5 with gearing at 21/81 and it will come off at 185 and that's with stock timing at 20 degrees. I just saw Maifields latest setup and he's running the Reedy 7.5 gearing at 23/81 with 0 degrees of timing. Does that mean he retarded the timing on the motor from the stock 20 to 0? Or is 0 in reference to the stock 20? If that makes any sense lol. Any tips are really appreciated. My 17.5 is also a Sonic Mach 2.

Originally Posted by ktmderf

Thanks wheelman for the answer on the timing. Bill pear, it is the same motor/ESC setup out of my previous car. I am getting a set of the lighter shorty packs from a main so I'll see if that'll help. I already have the aluminum screw kit and top shaft. It wouldn't bother me so much if I didn't notice it during the run. Probably the last minute or minute and a half of a 5 minute qualifier the throttle gets incredibly soft to the point where I can't clear doubles that I could clear easily in the beginning of the run. I've tried a different battery to check that and it was the same thing.

Originally Posted by ahsikes

Anyone have a local hobbyshop w a 5m in stock?

Originally Posted by ktmderf

Thanks wheelman for the answer on the timing. Bill pear, it is the same motor/ESC setup out of my previous car. I am getting a set of the lighter shorty packs from a main so I'll see if that'll help. I already have the aluminum screw kit and top shaft. It wouldn't bother me so much if I didn't notice it during the run. Probably the last minute or minute and a half of a 5 minute qualifier the throttle gets incredibly soft to the point where I can't clear doubles that I could clear easily in the beginning of the run. I've tried a different battery to check that and it was the same thing.

Originally Posted by rigor

IMO, based upon the motors / gearing / etc you've mentioned, you got something else going on somewhere. Timing isn't going to affect your temps that much.

I'd reset all electronics to default. And take the pinion off your motor and check your car for good free spinning movement on all wheels, etc.

Always better to get help from a local knowledgeable person who can physically assist.

Originally Posted by brian cox

let the bidding for a nib b5m begin!

Originally Posted by predu

Haha. Yeah right. Everyone that is just dying to get one if they could just find one. Wants it for list with free shipping. A bunch of clowns. I threw my nib that i still have and thats what people were hitting me up with....it was a joke.

Originally Posted by brian cox

Seems that way on rc tech doesn't it---supply and demand in the normal world brings higher dollars--