[AmiSMB]

Originally Posted by mainamigo

My friend runs a 10.5T tekin system in his 2wd b4.1. On the outdoor track its only marginally slower down the straight than my 6.5T tekin system in my 4wd b44.1.

He may be overgeared a little, but there isnt masses of difference.

If you get a good quality system you have the option of limiting current, increasing timing, boosting, allsorts infact.

So my advice would be to get something middle of the road, between 8.5 and 10.5 then adjust the speed to your liking on the esc. An 8.5 will be as fast as you will ever need in a 2wd in my opinion. Likley too fast at first, but you can turn the power down

Agreed most people when they run a lower kv or higher number of turn motor will normally adjust the gearing so that the top speed is equal or a bit less than the higher kv or lower turn motor. And these days with the ESC tuning options you can get a 10.5 to seem like a 6.5 as I have seen the Westwoods do at TORCH. The benefit with high turn lower kv motors is that you can tune them for performance but they take less current out of the batteries and you can get longer runtimes and they do not run as hot unless you really over gear them and or ramp up the boost and turbo on the ESC.

So with motors there are 4 variables that you need to look at which is number of turns, rpm/v (kv), spur gear and pinion gearing and the variable timing facility of the esc.

If you do not care about acceleration and want the fastest top speed then get the lowest turn motor with the highest kv you can buy and put on the smallest spur gear and largest pinion that you can fit to the car and wind up the esc but be carefull about the current draw through the esc and batteries as well as esc and motor temp. I did this on my ftx blaze and it was doing nearly 60mph in my road but bottom end was rubbish and ran very hot and when I tried to race with it it was useless!