R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric Off-Road

Reply
 
Thread Tools Search this Thread
Old 05-02-2013, 11:53 AM   #1
Tech Rookie
 
Join Date: Apr 2013
Posts: 7
Default NOVAK BALLISTIC 8 WITH ACTIVE 8 ESC

High, I`m knew to the 1/8 off road category. I just bought a Mugen MBX6, and a Active 8 with the Ballistic 8

the problem that i have is that the Motor, is getting hot, not the ESC,

I am running in a short track, with the standard car configuration Pinion 14

Other guy running in the same chassis, whit the same configuration but whit the Tekin esc and motor run with out problems of getting hot.

Do i need to modify the timing (un timing)? apart of running in a 13 teeth?

I donīt understand why the Ballistic run hotter than the Tekin. My motor reached 190 while the tekins get 150! same time, same speed, same track, in same category and same race

Any Help?
mfgranizo is offline   Reply With Quote
Old 05-02-2013, 12:22 PM   #2
Tech Elite
 
ta_man's Avatar
 
Join Date: Nov 2006
Location: New Jersey
Posts: 4,375
Trader Rating: 153 (100%+)
Default

First question I would have is: What motor did you get (1950KV or 2650KV)?

Then: What Voltage are you running it on?

The 2650 on 4S is not really appropriate.

That said, there is still the issue that the Activ8 only runs sensored.

Maybe Novak knows something about running sensored that other Manufacturers don't, but the other manufacturers will tell you if you use sensored mode only, the motor will run hotter. The 1/8th Tekin ESC does not even have a sensored-only mode.
ta_man is offline   Reply With Quote
Old 05-02-2013, 12:33 PM   #3
Tech Rookie
 
Join Date: Apr 2013
Posts: 7
Default

Quote:
Originally Posted by ta_man View Post
First question I would have is: What motor did you get (1950KV or 2650KV)?

Then: What Voltage are you running it on?

The 2650 on 4S is not really appropriate.

That said, there is still the issue that the Activ8 only runs sensored.

Maybe Novak knows something about running sensored that other Manufacturers don't, but the other manufacturers will tell you if you use sensored mode only, the motor will run hotter. The 1/8th Tekin ESC does not even have a sensored-only mode.
I run the 1950 Kv on 2S lipos
mfgranizo is offline   Reply With Quote
Old 05-02-2013, 12:46 PM   #4
Tech Master
 
84 GT 5.0's Avatar
 
Join Date: Apr 2010
Location: Fresno California
Posts: 1,303
Trader Rating: 26 (96%+)
Default

thats why 1950 on 2s is not good you need 4s
__________________
JQ THE Car YE teknoV4/xerun150/t81400/savox1256tg
Tamiya TRF-416/s6040/vipervtx10R/ killshot 17.5
kyosho scr-sp/sanwa94770/hobbwing 90a/atomik 13.5
futaba 4pl
84 GT 5.0 is offline   Reply With Quote
Old 05-02-2013, 03:06 PM   #5
Tech Rookie
 
Join Date: Apr 2013
Posts: 7
Default

Thanks for the comments and sugestions.

I know is some one that is a Novak representative in this forum?? hope i can hear form him.
mfgranizo is offline   Reply With Quote
Old 05-02-2013, 04:00 PM   #6
Tech Master
 
rdeppen's Avatar
 
Join Date: Sep 2006
Location: West Palm Bch FL
Posts: 1,028
Trader Rating: 9 (100%+)
Default

You can't run an ebuggy in 2s. The car is simply to heavy. The Novak Speed Control will work on a 2s lipo but not the motor. It needs more juice to operate efficiently. Charlie at Novak informed me to gear up a couple teeth from what a Tekin 1900 T8 would normally run even thou the ballistic is 1950kv
rdeppen is offline   Reply With Quote
Old 05-02-2013, 04:54 PM   #7
Tech Elite
 
kufman's Avatar
 
Join Date: Feb 2004
Location: Elburn, IL
Posts: 3,429
Trader Rating: 6 (100%+)
Default

2S will be tricky with that setup. Are you 2S limited by track rules?
__________________
Brushes? We don't need no stinking brushes!!!
kufman is offline   Reply With Quote
Old 05-02-2013, 06:13 PM   #8
Tech Fanatic
 
RodneyB's Avatar
 
Join Date: May 2003
Location: Columbus, OH
Posts: 902
Trader Rating: 7 (100%+)
Default

He said 2S lipoS, plural...maybe he meant 2 2s.

Assuming that, I am running the same setup (Mugen and activ8) and gearing and was only getting 140 on a smallish track with high traction.

Try gearing up, might help. Check gear mesh...should have play between spur and pinion.
__________________
Kyosho America; Peak Racing; Grandview Hobbies; CRCRC

CRCRC club administrator
Kyosho RB6, Kyosho ZX6, Kyosho SC6, Kyosho MP9e TKI
RodneyB is offline   Reply With Quote
Old 05-02-2013, 10:14 PM   #9
Tech Fanatic
 
Reubster24's Avatar
 
Join Date: Sep 2010
Location: Langhorne, PA
Posts: 754
Trader Rating: 37 (100%+)
Default

Your working the motor to much by running such low voltage. That is why it is getting to hot.
__________________
I can do all things through Christ who strengthens me!!! Philippians 4:13
Reubster24 is offline   Reply With Quote
Old 05-03-2013, 08:09 AM   #10
Tech Rookie
 
Join Date: Apr 2013
Posts: 7
Default

Quote:
Originally Posted by RodneyB View Post
He said 2S lipoS, plural...maybe he meant 2 2s.

Assuming that, I am running the same setup (Mugen and activ8) and gearing and was only getting 140 on a smallish track with high traction.

Try gearing up, might help. Check gear mesh...should have play between spur and pinion.
Yes I use 2 2s lipos, so i thing that is not the problem.

When you say gear up, you mean use a higher pinion? I`m usin 14, should i try 15?

Thanks in advance
mfgranizo is offline   Reply With Quote
Old 05-03-2013, 09:58 AM   #11
Tech Master
 
84 GT 5.0's Avatar
 
Join Date: Apr 2010
Location: Fresno California
Posts: 1,303
Trader Rating: 26 (96%+)
Default

are your 2 2s in series or Parallel ?
__________________
JQ THE Car YE teknoV4/xerun150/t81400/savox1256tg
Tamiya TRF-416/s6040/vipervtx10R/ killshot 17.5
kyosho scr-sp/sanwa94770/hobbwing 90a/atomik 13.5
futaba 4pl
84 GT 5.0 is offline   Reply With Quote
Old 05-03-2013, 12:16 PM   #12
Tech Legend
 
Cain's Avatar
 
Join Date: May 2002
Location: West Fargo, North Dakota
Posts: 29,760
Trader Rating: 240 (100%+)
Default

Some questions I have:

- Where are you topping out down the longest straight?
- Do you find you are at the higher end of your throttle range (more trigger pull) around the entire track or worse, basically full throttle around most or all of the track
- Do you have any backlash between the pinion and the spur? (can rock it slightly, not all snugged up)
- With the motor disconnected from the drivetrain (pinion not touching the spur), can you free roll the car, do you notice any binding?

Depending on your answers, can provide more help. My initial guess is its possible you are undergeared for your track conditions.
__________________
Member - FM Mini Racers, Red River Radio/Control Car Club
< Tekno EB48SL / SCT410.3 | Tekno EB410 x 2 | Yokomo YZ-2 DTM x 2 | LC Racing EMB-1 Buggies and Truggies >
Cain is offline   Reply With Quote
Old 05-03-2013, 02:12 PM   #13
Tech Rookie
 
Join Date: Apr 2013
Posts: 7
Default

Quote:
Originally Posted by 84 GT 5.0 View Post
are your 2 2s in series or Parallel ?
Series. 2 2s lipos connected in series
mfgranizo is offline   Reply With Quote
Old 05-03-2013, 02:17 PM   #14
Tech Rookie
 
Join Date: Apr 2013
Posts: 7
Default

Quote:
Originally Posted by Cain View Post
Some questions I have:

- Where are you topping out down the longest straight?
- Do you find you are at the higher end of your throttle range (more trigger pull) around the entire track or worse, basically full throttle around most or all of the track
- Do you have any backlash between the pinion and the spur? (can rock it slightly, not all snugged up)
- With the motor disconnected from the drivetrain (pinion not touching the spur), can you free roll the car, do you notice any binding?

Depending on your answers, can provide more help. My initial guess is its possible you are undergeared for your track conditions.
In the main straight yes

Yes I am in the higher throttle range

Yes I have backlash and the car disconnected, roll free
mfgranizo is offline   Reply With Quote
Old 05-03-2013, 03:34 PM   #15
Tech Legend
 
Cain's Avatar
 
Join Date: May 2002
Location: West Fargo, North Dakota
Posts: 29,760
Trader Rating: 240 (100%+)
Default

Quote:
Originally Posted by mfgranizo View Post
In the main straight yes

Yes I am in the higher throttle range

Yes I have backlash and the car disconnected, roll free
If I am understanding this right, you are in your higher throttle range around most of the track, not just the straight.

Based on that, you need to go with a bigger pinion size. Target to top out towards the end of the longest straight.

From there, see how temps are and adjust gearing down. It should get your overall motor temps down.
__________________
Member - FM Mini Racers, Red River Radio/Control Car Club
< Tekno EB48SL / SCT410.3 | Tekno EB410 x 2 | Yokomo YZ-2 DTM x 2 | LC Racing EMB-1 Buggies and Truggies >
Cain is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 10:52 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net