Originally Posted by Steve Weiss

That is the 5 cell gear ratio!

8.5 for the 3.5 and 7.6 for the 4.5.

With 6 cells with the new rotor I would run around 9.1 and 8.5 respectively

Originally Posted by bxpitbull

Any company that is coming out with bonded rotors in the more aggressive BL motors are asking for problems. Novak realized this and went sintered....FAAAST!. For the milder winds, bonded really isnt an issue. When you get in the 4.5 and 3.5 range, those rotors shatter like they were hit with a hammer.

Originally Posted by mxzhonkey

hey just to let to let you me and my cousin run an endro-car every year with a 4.5 Novak, we ran a system for 2 years with the bonded rotor (we just replaced it with a sintered system). every weekend a 24 minute race and one weekend a 48 min race. for 2 year never had a problem. reason for replacing the system was he wanted a 4.5 for onroad truck racing( we have skateboard jumps, thus no landing, very very fun.)

Originally Posted by magm20001

ok done, but i'm not too sure if the request would be passed onto the person who does the purchasing decisions

Originally Posted by NovakTwo

Something worked.....

Tower is now listing the 13mm tuning rotor...price should be the same as the Vel sintered rotor once Tower has inventory.

Originally Posted by FrankW

Back when I raced with brushed motors in spec classes I would usually buy a motor (maybe two) for the season, then a couple extra arms (at $15 a pop). I would also have to buy a seasons worth of brushes, motor springs and shims (which all add up in cost). Then spend hours tuning, cutting, shimming, etc. Swaping out arms because I didn't want to lug around my comm lathe with me to the track everyweek. Then, don't forget about the comm lubes. The next season, I would have to buy all that stuff again. It was a pretty large expense.

Now, with brushless I have one motor and that's it. I haven't even taken it out of my car since I've put it in there. It's worked flawless now for at least 50 runs. I haven't had to spend any time tuning, truing, or shiming. All that time that was spent working on the motor can now be spent on the track, or on tuning the car itself. So, if I have to spend $30 a season on a new, improved rotor (then install and forget about it) to stay competitive... that's nothing compared to the time and money spent on a brushed system.

Even the initial cost of a competitive brushed system and all the required accesories to keep it running at peak performance is more expensive than the brushless counterpart.

I think the brushed motor builders/tuners hate brushless motors because they can't make money off of them. Eventually they will be out of business because the brushed demand will decrease to the point where there just isn't enough money flowing in. This is very unfortunate, but it's also evolution. If you can't find away to stay in the game, then you will become extinct.

-Frank

Originally Posted by air8

I started off the day liking the change to the 13mm rotor. But as the evening wore on I noticed I couldn't keep up with anyone. I'm not sure this was worth it for me. I didn't have time between rounds to put the 12.3mm back in to test. So I'll see when I get time to do a back to back.

Anyone else have comments on the 13mm?