Emaxx tranny or Revo Tranny

[whipcream]

Im sure this has been asked a million times. I was using the speed calculator to determine what motor to get and It kept telling me the rpms to achieve that were to high. Im using the standard 2.5 Revo tranny. Would I be better off with the Emaxx Tranny. I'm trying to achieve 45 mph. Im either gonna run the quark 125b or the mgm16018. Whats everyone opinions? Im totally new to brushless and I dont mind spending a little more to be completely satisfied.

[Matthew_Armeni]

Well I like the Revo tranny. It can already handle brushless, no chassis mod required, alternative second gear ratios available. What are you putting into the calculator as far as gearing, battery, etc? Can you paste that setup in here? Maybe you entered something wrong and didn't catch it. 45mph is very duable(do-able? I can't spell!). I'm sure it's something easy.

[stum]

The new emaxx tranny is a much improved tranny better than the revo stock and is already set for 2nd gear only.. brushless ready and keeps a nice low COG. You can run dual 2s packs for a nice 4s or even 6s config with great overall balance still.. the new tranny has 1 motor lined up dead center so it's perfect for a single XL or similar sized motor. Take a look at my thread for more detail.. http://www.rc-monster.com/forum/showthread.php?t=9470

[BrianG]

Originally Posted by whipcream

Im sure this has been asked a million times. I was using the speed calculator to determine what motor to get and It kept telling me the rpms to achieve that were to high. Im using the standard 2.5 Revo tranny. Would I be better off with the Emaxx Tranny. I'm trying to achieve 45 mph. Im either gonna run the quark 125b or the mgm16018. Whats everyone opinions? Im totally new to brushless and I dont mind spending a little more to be completely satisfied.

Motor rpms is based solely on battery voltage and motor kv. Each motor has a maximum recommended rpm which must be exceeded using the motor and/or battery voltage you selected. Feigaos and the like are good for around 40k rpm max (30-35k preferable), while Neus are higher-end and can get upwards of 55krpm. The calculator still displays the speed, but simply warns you that something may be wrong. Which calculator were you using and what parameters were you entering?