The 5800 has 8.5 turns but that does not equal 8.5 turns on a brushed motor.

Just had a problem setting up my GTB to run 4 cell 19. I have a local track who doesn't believe in current technology and I wanted to race so I switch out my 5800 and put a 19T in and set the GTB to the brushed mode and then the set up for the trigger. The motor sputters at full throttle and goes twice as fast when I reverse the trigger. The motor is spinning the same direction but goes faster when I reverse the trigger??? Positive wire (red) to motor pos and GTB pos and battery pos, the orange, yellow and blue go to the neg on the motor. Did I get a bad speedo?? I had checked the wiring and it still isn't working. I didn't buy a GTB for the brushed mode but I wanted to race locally today and was unable to w/o a speedo??? Anybody else have this problem?

I have not tried mine iin brushed mode. But some of the Novak support guys check this forum site. Here is a link. http://forums.radiocontrolzone.com/forumdisplay.php?f=335

There might be some thing there with so info for you.

I've ran my in brushed mode several times and switched back to brushless. No problems with both motors and switching back the modes. I did have troblem determining if I was in the brushed and brushless mode. Check that first and make sure the speedo is not connected to any motor. Also on the brushed motor ensure the three wires are connected to the negative side of the motor. I created a connector so I have to worry about one wire going to the negative.

When I changed to brushed mode I didn't have anything connected. I had made a connector for the 3 wires to the negative. It just seemed like the speedo wasn't right. It runs fine in brushless though.

After 25 hours later I figured out what I was doing wrong for the switch over from brushless for the GTB and SS +. Apparently you only have about 3 seconds to hit the set button on step 7. I was taking too long to get to that part. It works fine now. Both the GTB and the SS + speedos setups are similar . If you don't get to it fast enough it won't switch over.

Would there be any performance gain running a 4300 motor But Using the GTB speedo over the stock speedo that it comes with?

A 5800 runs like a 19turn and a 5.5 is like a 9 turn and a 4300 is like a stock 27. These are not exact numbers but just from what I have seen on the track. It seems the BL motors don't fall off as much during a run like brushed ones do from the heat build up. The 5.5 and 6.5 are ballistic no matter what you put them in.

Would there be any performance gain running a 4300 motor But Using the GTB speedo over the stock speedo that it comes with?

The GTB and LRP speedos offer a slight performance gain but if your running oval your chassis has to be really good to notice any difference.

Hi guys, i just bought a novak GTB with 5.5 motor, and have it in a TA05 tamiya chassis.

It would be really helpful if anyone with the GTB 5.5 or 6.5 post there pinon, spur and final drive ratio and chassis they used it in aswell please, and if anyone knows, the top speed aswell.

THanks

I ran a 5.5 at the Novak race in my XRay... forget the rollout I ran... but keep gearing it up until the motor temps at around 160 after you run a pack. Thats exactly what the Novak guy told me when I asked about gearing

did you feel that the starting punch is good but the middle range acceration is slower than brush motor? I always reach the top speed at the very end of the straight! (I run 6.5r , the 8 mins. race result just similar to my 10turn.)

I run pro4 with 8.3 gear ratio 64 pitch gear.(if I run 8.5-8.7 will be too slow)
can I use 48 pitch gear to strengthen the middle range acceration ?

The 6.5 should run about like a 10 turn. Try changing the drive frequency to get the motor to feel more linear.

The 5.5 will have more of the performance of a 9 turn but it still feels a little flat on the middle (especially if it's overgeared).

These motors will rev a lot higher than everyone thinks and it's always a good idea to try gearing way down once in practice. You might be surprised.