R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 07-17-2006, 05:30 PM   #1
Tech Initiate
 
Join Date: Jul 2006
Posts: 40
Best gearing for Komodo Dragon 19T spec Pro motor?

Hi everyone,

I'm new to the RCTech forums.

Right now, I'm running a Tamiya 415 MSX with a Komodo Dragon Pro Spec 19T motor. Anyone know what a good pinion gear size to run for this setup? I'm running a 102T spur gear. I did a little research online, and I'm thinking somewhere around a 32-33 pinion gear would be a good size for race application? Not sure what final drive ratio should be for this Trinity motor. Any help is appreciated! Thanks!
Porkibear is offline   Reply With Quote
Old 07-17-2006, 05:54 PM   #2
Tech Fanatic
 
tbeardmore's Avatar
 
Join Date: Oct 2004
Location: aka "Rock Star"...!
Posts: 879
Trader Rating: 3 (100%+)
Default

The best way to gear is on the track. Listen to the car rev up to top speed on the longest straitaway just before you turn into the corner.

Use a temp gun and check that it's not getting too hot. About 170 degrees is about the max I run mine.

Hope that helps!
__________________
BMI DB10R, Corally RDX PHi, BMI 12R..!!
Need a "real" car... contact me at:
www.beardmorechevy.com -or- www.beardmoresubaru.com
tbeardmore is offline   Reply With Quote
Old 07-17-2006, 06:45 PM   #3
Tech Elite
 
PitCrew's Avatar
 
Join Date: Sep 2003
Location: Seattle Indoor Raceway
Posts: 2,129
Default

Depends on the size of the track.

Start with a relatively small pinion and go up untill your lap times start to fall back off just a bit, then go back down one tooth.
PitCrew is offline   Reply With Quote
Old 07-17-2006, 07:11 PM   #4
Tech Elite
 
Glowster21's Avatar
 
Join Date: Mar 2005
Posts: 3,493
Trader Rating: 116 (100%+)
Default

Running a Komodo on foams we have been in the neighborhood of 26.5mm rollout.
Glowster21 is offline   Reply With Quote
Old 07-17-2006, 08:56 PM   #5
Tech Champion
 
Join Date: Oct 2005
Location: Cincinnati, OH
Posts: 5,360
Trader Rating: 38 (100%+)
Default

Wow our local fast guys run at 1.4+ rollout (35mm). When I tried 1.3 my motor came off the track at 250+ degrees. Not sure how they do it. They say they arent doing anything different then me. I try to gear down and cant keep up! Dont like having to cut the comm and replace the brushes every heat.

Last edited by or8ital; 07-18-2006 at 05:54 AM.
or8ital is offline   Reply With Quote
Old 07-17-2006, 11:02 PM   #6
Tech Elite
 
ottoman's Avatar
R/C Tech Charter Subscriber
 
Join Date: Oct 2001
Location: wisconsin
Posts: 2,761
Trader Rating: 13 (100%+)
Default

TQed the Sizzler Sunday at Trackside (carpet foams) with a 1.18 rollout
ottoman is offline   Reply With Quote
Old 07-18-2006, 04:30 AM   #7
Tech Elite
 
Glowster21's Avatar
 
Join Date: Mar 2005
Posts: 3,493
Trader Rating: 116 (100%+)
Default

Quote:
Originally Posted by ottoman
TQed the Sizzler Sunday at Trackside (carpet foams) with a 1.18 rollout
Wow...Any Komodo I've seen rolled out over 28mm or 1.10 has smoked.
Glowster21 is offline   Reply With Quote
Old 07-18-2006, 05:35 AM   #8
Tech Champion
 
Join Date: Jan 2004
Location: Rockville, MD
Posts: 5,058
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by Glowster21
Wow...Any Komodo I've seen rolled out over 28mm or 1.10 has smoked.
What size track and layout are you running the 28mm on? We where running a 35mm for a 60 x 110 asphalt track. The layout was tight with a long straight and long sweeping turn.
__________________
Steve Walter
Sweep Racing USA/ Speed Passion USA/ Karens Famous Cookies (Transporter)
SRW141 is offline   Reply With Quote
Old 07-18-2006, 06:01 AM   #9
Tech Champion
 
Join Date: Oct 2005
Location: Cincinnati, OH
Posts: 5,360
Trader Rating: 38 (100%+)
Default

Quote:
Originally Posted by SRW141
What size track and layout are you running the 28mm on? We where running a 35mm for a 60 x 110 asphalt track. The layout was tight with a long straight and long sweeping turn.
The track I run at as well is similar size (not very technical though) and the top guys also run 35mm. What do you do to keep your motors cool? I have a fan on my endbell but that is about it. When I come off the track geared that high the motor is 250 degrees, the comm is black and the brushes are burned up. It also starts to fade the last 30 seconds.
or8ital is offline   Reply With Quote
Old 07-18-2006, 06:15 AM   #10
Tech Elite
 
Glowster21's Avatar
 
Join Date: Mar 2005
Posts: 3,493
Trader Rating: 116 (100%+)
Default

Quote:
Originally Posted by or8ital
The track I run at as well is similar size (not very technical though) and the top guys also run 35mm. What do you do to keep your motors cool? I have a fan on my endbell but that is about it. When I come off the track geared that high the motor is 250 degrees, the comm is black and the brushes are burned up. It also starts to fade the last 30 seconds.
We run a 60x90 technical track with a long straight and 2 high speed sweepers. The really fast guys are turning consistent 10.4 - 10.5 second laps. One of the motors that literally dripped epoxy after a run was frozen with a Crazy Ronnie Motor Freezer before the run, had the Double Cool Can Fan in an RDX, and was rolled out at 29mm. When I rolled out at 30mm on my RDX the motor dropped off so hard with 30 seconds left I thought I was running a silver can 540. 26.5mm has been the optimum so far for those of us that have been testing them on that particular track.
Glowster21 is offline   Reply With Quote
Old 07-18-2006, 06:20 AM   #11
Tech Fanatic
 
Join Date: Aug 2004
Location: Northern, KY
Posts: 859
Trader Rating: 4 (100%+)
Default

Like Ottoman at the sizzler I was running a 1.14-1.15 should have gone up more, motor came off hot, but the brushes were no where near burnt up.
__________________
visit Hurricane Motorsports: www.teamhurricane.net | RCAmerica www.RCAmerica.com | HUDY | JACO
bigdog xxx-s is offline   Reply With Quote
Old 07-18-2006, 06:22 AM   #12
Tech Champion
 
Join Date: Jan 2004
Location: Rockville, MD
Posts: 5,058
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by or8ital
The track I run at as well is similar size (not very technical though) and the top guys also run 35mm. What do you do to keep your motors cool? I have a fan on my endbell but that is about it. When I come off the track geared that high the motor is 250 degrees, the comm is black and the brushes are burned up. It also starts to fade the last 30 seconds.
I run a 3racing fan on my motors. The motor comes off at around 190 degrees. The com is discolored. We can get 2 runs out of the com and brushes. Our Team motor builder uses his speed brushes. He will not tell us what the brushes are. When I geared down the motor would over heat and turn the com purple and the brush tips where silver. The motor would stop running after 3 minutes. I will only use the KD19 for big races. The Atlas and C2 aren't as hard on brushes.
__________________
Steve Walter
Sweep Racing USA/ Speed Passion USA/ Karens Famous Cookies (Transporter)
SRW141 is offline   Reply With Quote
Old 07-18-2006, 06:25 AM   #13
Tech Champion
 
Join Date: Jun 2004
Location: St Louis
Posts: 7,868
Trader Rating: 198 (100%+)
Default

I have heard the XXX brush holds up much better on the KD. I am waiting on mine to try it myself.

The KD is so darn tuff to gear. The first time out with one I burnt it up I did not feel it was over geared or under geared. It was fast thought
__________________
Please become an organ donor.
www.donatelife.net
Custom decals and Sno-Tee'z, T-Shirts by Sno Camel
dodgeguy is offline   Reply With Quote
Old 07-18-2006, 07:10 AM   #14
Tech Elite
 
dawgmeat's Avatar
 
Join Date: Apr 2004
Location: Jacksonville, FL
Posts: 2,504
Trader Rating: 6 (100%+)
Default

Quote:
Originally Posted by Glowster21
We run a 60x90 technical track with a long straight and 2 high speed sweepers. The really fast guys are turning consistent 10.4 - 10.5 second laps. One of the motors that literally dripped epoxy after a run was frozen with a Crazy Ronnie Motor Freezer before the run, had the Double Cool Can Fan in an RDX, and was rolled out at 29mm. When I rolled out at 30mm on my RDX the motor dropped off so hard with 30 seconds left I thought I was running a silver can 540. 26.5mm has been the optimum so far for those of us that have been testing them on that particular track.
I race at the local track with Glowster the KD are fast but I would not use for club racing at all becuase of the money it you have to put into maintain it high level i.e. brushes for every run and the constant cutting of the comm =practice, 3 qualifiers and a main your comm will be toast in 3 race days and the high temp has killed the magnets but anyway I'm runnin' foam at 27mm rollout purple springs +/- XXX brushes good hunting
dawgmeat is offline   Reply With Quote
Old 07-18-2006, 07:34 AM   #15
Tech Champion
 
Join Date: Oct 2005
Location: Cincinnati, OH
Posts: 5,360
Trader Rating: 38 (100%+)
Default

Since you all seem very knowledgeable on motors I'll hijack this thread a bit and ask about gearing for the Checkpoint Money 19T. Guys at my track are running 1.3 (33mm) rollout on them and I also cant keep the temp down. The brushes dont seem to burn up (turn purplish but still work) and the comm doesnt get as bad as the KD. The motor does come off 240 degrees though.
or8ital is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
trinity komodo dragon motor installation help irieriddim Electric On-Road 4 05-15-2010 06:49 PM
Komodo Dragon Mans343 Electric On-Road 133 02-22-2010 12:42 PM
Komodo Dragon II 19t wolfden R/C Items: For Sale/Trade 0 01-19-2008 09:02 PM
What FDR for a Komodo Dragon 19T? martman_oc Electric On-Road 3 12-07-2007 03:56 PM
Komodo Dragon Johnny Wishbone Electric On-Road 13 06-06-2006 12:54 AM



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 02:42 AM.


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