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Old 01-31-2016, 02:41 PM   #8896
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Default Am I missing something?

Last night was my first race with my 2.0. I am running the pro 4 HD 4300 with rx8 Gen 2. Pinion 12 and spur 40 using 5200 50c lipo. Track is huge with large triples. I could barely double some of them.
Through out the race I notice some short course guys were just tearing through the track and leading by 4 seconds or more. They ended taking the series and because of this I wanted to know what their secret was.
After talking and looking over their car(one tekno, one 2.0) they both had 4700 dynamite motors with the same esc as me. 13 pinion 40 spure with the max amps 8000mah, 150c battery.

With only a one tooth difference and a huge battery, is it realistic to have more capability like I witnessed last night?

Last edited by Giulitto; 01-31-2016 at 05:16 PM.
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Old 01-31-2016, 03:26 PM   #8897
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Yes. I'd say 12/40 is geared a little too short for a big track and that motor. If they were running 13/40 with a faster motor, I'd say you should try 14/40 with yours. Go 5 minutes, check temps.
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Old 01-31-2016, 05:15 PM   #8898
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Yes. I'd say 12/40 is geared a little too short for a big track and that motor. If they were running 13/40 with a faster motor, I'd say you should try 14/40 with yours. Go 5 minutes, check temps.
Is 4700kv to 4300kv that big if a difference?
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Old 01-31-2016, 05:57 PM   #8899
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Originally Posted by Giulitto View Post
Is 4700kv to 4300kv that big if a difference?
About 10% faster, then you're also geared about 10% lower. Very rough math there, but you're about 20% slower assuming ESC programming is the same. Of course, that's another variable: do you know their punch and timing boost settings compared to yours?

How hot was your motor after you finished a heat?
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Old 01-31-2016, 06:23 PM   #8900
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Also, a 50c pack doesn't really have the punch to power that motor effectively. I'd stick with higher c rated packs in the 100c or more range. I run 39T spur gears from either MIP or Robinson Racing with a 15T or 16T pinion on large outdoor tracks. Indoors I run the same spur gear, usually with a 14T pinion. As long as you're not overheating you should be fine. 12T is just too small to be fast on a large track with a low kV motor.
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Old 01-31-2016, 11:47 PM   #8901
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Good greif! 12t?

I run a 4700 XERUN motor and never need to go lower than a 14t on 39-40t spur!
Usually run a 15t - 39 or 16t - 40 for most tracks and have never temp locked.

As said before in this and other SCT threads on here, you can actually over temp your setup under geared just as easy if not faster than you can with one setup to tall because of redlining to much down the straights.
If you do, it's time to look into getting yourself a hobbywing or SMC motor and never look back. They simply don't get hot like many others I have seen do.

And as far as the pack goes, as long as your not pulling more than 1.9 - 2.0 resistance on a charged pack, your not going to have puffing problems.
You should be running a 6500 - 7200 pack. You don't need more than those for 90% of the tracks and heat times your going to encounter.

Last edited by Josh L; 02-02-2016 at 01:28 AM.
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Old 02-01-2016, 04:42 AM   #8902
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Default Receiver box

I saw a lot of guys using an associated receiver box for the 2.0 and it looks like it works good but here's another option, I use the tlr 3.0e buggy servo mount and receiver box, it bolts right up the only thing you have to do is trim a little on the side rail and I shave a little off of the bottom of that receiver box because the chassis turns up a little and it helps the lid fit better but it looks good and clean! Works great for me I've had it on my 2.0 for over a year now!
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Old 02-01-2016, 04:45 AM   #8903
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Another pic
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Old 02-01-2016, 04:48 AM   #8904
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Top view without lid
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Old 02-01-2016, 05:12 AM   #8905
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Quote:
Originally Posted by Josh L View Post
Good greif! 12t?

I run a 4700 XERUN motor and never need to go lower than a 14t on 39-40t spur!
Usually run a 16t - 39 or 15t - 40 for most tracks and have never temp locked.

As said before in this and other SCT threads on here, you can actually over temp your setup under geared just as easy if not faster than you can with one setup to tall because of redlining to much down the straights.
If you do, it's time to look into getting yourself a hobbywing or SMC motor and never look back. They simply don't get hot like many others I have seen do.

And as far as the pack goes, as long as your not pulling more than 1.9 - 2.0 resistance on a charged pack, your not going to have puffing problems.
You should be running a 6500 - 7200 pack. You don't need more than those for 90% of the tracks and heat times your going to encounter.
12T is per the setup sheets on the majority of TLR recent races. My temp on the motor was 82 after a 5 minute Qual.

This is the type of info that could be useful on the front page as a sticky. How do we get that going?
Thank you all with the help.
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Old 02-01-2016, 05:54 AM   #8906
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Quote:
Originally Posted by Giulitto View Post
Last night was my first race with my 2.0. I am running the pro 4 HD 4300 with rx8 Gen 2. Pinion 12 and spur 40 using 5200 50c lipo. Track is huge with large triples. I could barely double some of them.
Through out the race I notice some short course guys were just tearing through the track and leading by 4 seconds or more. They ended taking the series and because of this I wanted to know what their secret was.
After talking and looking over their car(one tekno, one 2.0) they both had 4700 dynamite motors with the same esc as me. 13 pinion 40 spure with the max amps 8000mah, 150c battery.

With only a one tooth difference and a huge battery, is it realistic to have more capability like I witnessed last night?
where is the 4700 dynamite motor located?? I cant fint it on the net.

I Found a LRP Dynamic Motor(4700kV)

thanks
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Old 02-01-2016, 06:42 AM   #8907
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If your motor comes off at 82 degrees, then you can gear up a couple teeth for sure. Or you could add a lot of electronic timing and boost if you wanted to keep the gearing that low for infield punch.
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Old 02-01-2016, 10:32 AM   #8908
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Quote:
Originally Posted by Giulitto View Post
12T is per the setup sheets on the majority of TLR recent races. My temp on the motor was 82 after a 5 minute Qual.

This is the type of info that could be useful on the front page as a sticky. How do we get that going? Thank you all with the help.
Are we talking Celsius or Fahrenheit? 82C is actually really hot... =180F.

If it is in fact 82 Fahrenheit, then 1) wow is that ever low and 2) increase pinion, boost, timing, whatever you want since you have a lot of leeway to play with...
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Old 02-01-2016, 10:42 AM   #8909
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Quote:
Originally Posted by Giulitto View Post
12T is per the setup sheets on the majority of TLR recent races. My temp on the motor was 82 after a 5 minute Qual.

This is the type of info that could be useful on the front page as a sticky. How do we get that going?
Thank you all with the help.
I believe they use a 12t because they run 2 pole 550 can motors. Pretty sure thats what Phend uses, an Orion 4.5 2 pole.
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Old 02-01-2016, 12:05 PM   #8910
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That sounds right for 2 pole motor. I have a few SCT trucks and the 14t pinion is the most used gear in all of them. I can't remember the last time I ever considered using a 12t pinion on todays brushless 4 pole motors.

I would like to try the 2 pole motor to see how it does. I just don't have a good reason to swap. I have adjusted so well to the power house 4 poles that anything less feels wrong.

The right driver with high end hand selected motors and lipos can make anything win. Has always been that way, but the gap is much closer these days.
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