R/C Tech Forums

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

Thread Tools Search this Thread
Old 11-20-2002, 02:48 PM   #1
Tech Initiate
Join Date: Jul 2002
Posts: 31
Default which pinion gear to use?

i have a 70 Spur gear.....and an 11 turn motor.....
what pinion gear should i use......

i have a TC3..

which one gives me more torque (low end)? Speed (high end)? and both.

M3Jokster is offline   Reply With Quote
Old 11-20-2002, 02:49 PM   #2
Tech Initiate
Join Date: Jul 2002
Posts: 31

also....is there a formula out there so that i can calculate?
M3Jokster is offline   Reply With Quote
Old 11-20-2002, 03:40 PM   #3
Speedo's Avatar
R/C Tech Charter Subscriber
Join Date: Aug 2001
Posts: 3,431

The formula is spur/pinion * the internal drive ratio of your car.

EX: you have a 70 spur, 25 tooth pinion and your DR is 2.2 - 70/25*2.2 = FDR The lower the FDR (final drive ratio) the higher top end, the higher the FDR, the better the acceleration. Thus, a smaller pinion yields better acceleration, and a larger pinion yields more top end.

I can't tell you what pinion you should use, it really depends on your track.
Speedo is offline   Reply With Quote
Old 11-20-2002, 05:51 PM   #4
Tech Fanatic
Steevo's Avatar
Join Date: Sep 2002
Location: TIMMAY!!!
Posts: 980

Speedo is 100% Right. It depends on a lot of factors that you have not mentioned like Internal drive ratio, Tyre diameter, Type of track etc.
If you search for the "Rollout figures" thread you will find a handy formula to give you an Idea of where to begin gearing your car. It provides a useful starting point from which to work from.

Steevo is offline   Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
Help super gear and pinion gear jojo RRR Electric On-Road 0 06-18-2007 06:37 PM
New Pinion Gear xscape Singapore R/C Racers 0 01-21-2007 06:11 PM
Would switching from a 19t pinion gear to a 21t pinion make a big difference ? thahookup Rookie Zone 5 05-19-2006 12:09 PM
what pinion gear should I run? duckbutter Electric On-Road 4 02-22-2006 10:33 PM
Pinion & Gear tkhoo Malaysian R/C Racers 4 08-30-2003 08:18 PM

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 09:16 AM.

Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net

SEO by vBSEO 3.5.0