Originally Posted by SpecRC
Ive played around with rc for abit but just trying to understand a few things about the pro level. I know they hit speeds of 120 kph So trying to see what turns there running or kv
Im aware that dif motors are dif kv hence im curious as to what they run as ive seen there races on the web and they appear the same speed.
In the rules it doesnt state which motor to use so is that call on the day they make? They must be all using the same motors but what is it lol
What is a '05 size motor? Its in the rules for 1/10 ifmar Championship
Usually mod is 10.5 or lower (think the BRCA rules were 10.5 for mod, not sure why) and there are plenty of stock classes above that with different rules regarding boost. Drivers running a series that allows any motors/ESC settings will usually choose a motor that suits the track the best. Say for a big open track with a long straight you could run 5.5 or 4.5 in a touring car, but for a much tighter technical track you may want to run something a bit slower to give you a more usable power band. You could also start adding boost and timing with the ESC and run a higher turn motor if you wanted, but you would need to make sure you can keep the temps down. It really depends on where you're running and what series/car you are running. Some series wont allow you to run a lower turn motor so you have to get your ESC settings right instead, playing around with boost and whatever features your ESC has will change the characteristics of the power delivery and obviously change the straight line speed too. If you want to know the kV of a motor then find the manufacturer website and look up the specs, that will help to give you an idea. I know Reedy, LRP and Speed Passion have a table of all their motors with a load of specs, I'd assume other manufacturers do too.
What it comes down to is picking the right motor for the car, track and your driving style, that is of course providing the series has no restrictions. I think a lot of the top drivers will run around 5.5T pretty much everywhere, although I'm not sure if they're running any boost on top of that - I wouldn't have thought you would need it on a lot of tracks.