I noticed that too, I was at 55 then backed it down to 50. That seams to be the sweet spot for my setup.

After consulting several people on this matter, you're information is dramatically incorrect!

In actuality smaller spur gears will out accelorate a larger spur!
Larger spur gear will calm down the torque of a brushless motor, generally due to excessive wheel spin coming out of a corner. If you dont have enough pop out of a corner, smaller spur will help. Sponsored and non-sponsored guys have verified this.

Sorry but you're incorrect.

A package arrived last night!

Not so. I did the same thing erik did with mid-motor configuration. I used to use a 66tooth spur. I got no pop (torque) on clearing big doubles or triples with that spur. I went up to 72t myself and got the acceleration and torque i was missing w my 66t. Top end was hella quicker w 66t spur thou

Maybe in a broader sense you are right. But w MM i noticed u simply arent as fast w same gearing u had in RM and a small tweek is needed w gearing to get the acceleration and torque needed

So is there something with the addition of one extra idler gear make a MM a contradiction of normal RC rules?

Its fact that the closer the Spur and pinion are in size the more top end your car will have. Higher FDR = more torque and Lower FDR = top end. Its fact not something I came up with on my own.

I officially stand corrected, and appologize for making a fool of myself.

I just chatted with a LONG LONG LONG time AE sponsored racer and he agreed with your statement!

Larger spure equals quicker acceleration Smaller spur gear equals more top end!

Back in the day with RM I was fighting excessive wheel spin coming out of the corners and a guy said to put a larger spur gear on it, didn't do anything with gearing it moved the motor back giving more traction!!!

I stand corrected and will adjust my knowledge base accordingly!

Maybe that's why we run the smallest spur we can get our hands on in oval!

Exactly!

Looks like I have some work to do before races tomorrow!

but i know you just found out the the smaller pinion bigger spur make you accelerate faster(most part this is how they tell you and most time is true)... but this is not how the gears work. it just make it easy for it to turn does not mean it going to accelerate faster. if you put the biggest spur and the smallest pinion you can you will see it spin slower but it give the gear more leverage so you increasing torque. most the time torque will give you more acceleration but is not always true. you can sometime slow down the torque curve of a motor by putting the smaller pinion making it acceleration slower=less tire spin. 1 EX i ran a 5.5t on a old mf1 2wd i dont remember the gear for sure but if the track was grove i could run 16t pinion but it would get slick with dust you would spin out so i would put a 13t gear to slow down the wheel = less accelerate. it like saying a bigger pinion will give you more stop end but it not always true as well... if you under or over gear it!!!

I found my mm car would not pull the same gearing as my rm car. Not even close. Out of corner triples that were a breeze in rm were impossible with mm. Went down a couple of teeth on the pinion and it was better. Of course it lost some on the straightaway but if your casing jumps that the other guys are flying over, your in trouble.

Was their a weight difference between cars? A lot of things change from car to car.

Yes it was heavier. I'm going to build a lightweight mm tlr 22 soon. I'm not sold on mm in stock yet. But I have yet to try a 1500 gram one. I think rm cars look cooler and that's most important to me. When I get my lightweight mm car built I will be able to figure out if the 4th gear is the power killer I think it is.

Elex300 what gearing and timing are you running on your stadium truck. I run at fzrc and 301. Thanks

Is there a difference between the D3.5 and D4 rotors? Or is it just a difference in the stator?