R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 06-15-2005, 01:21 PM   #1
Tech Addict
 
GReddy's Avatar
 
Join Date: Nov 2003
Location: san francisco, CA
Posts: 531
Trader Rating: 4 (100%+)
Send a message via AIM to GReddy
Default 64 pitch gear meshing

hey if my gears are 64 pitch how should i mesh them? like say a normal peice of printer paper i just use a single peice and mesh them with that or is there a better way?
GReddy is offline   Reply With Quote
Old 06-15-2005, 01:24 PM   #2
Tech Elite
 
edseb's Avatar
 
Join Date: Jan 2004
Location: Laguna Niguel, California
Posts: 2,421
Default

I just do it by feel. Mesh it so that it is tight, then back it off till you feel a slight play in the gears. With 64 pitch it will be very subtle compared to 48 pitch.
__________________
RC Car Action Editor and Photographer
Carl Hyndman
edseb is offline   Reply With Quote
Old 06-15-2005, 01:25 PM   #3
Tech Fanatic
 
Join Date: May 2005
Location: Riverside, CA
Posts: 838
Trader Rating: 18 (100%+)
Default

I personally never liked the piece of paper theory but I have always tried to pull the pinion away from the spur about 1/3 the length of the tooth height. That has worked for both 48 and 64 pitch.
Chris Brown is offline   Reply With Quote
Old 06-15-2005, 01:30 PM   #4
Tech Master
 
axel's Avatar
 
Join Date: Jan 2005
Location: NorCal
Posts: 1,226
Default

I always insert the pinion. without tightening the grub screw, then I spin the spur to see how free it is, it should spin fairly well. It should also feels very free.
axel is offline   Reply With Quote
Old 06-15-2005, 01:55 PM   #5
Tech Elite
 
ChadCapece's Avatar
 
Join Date: Sep 2004
Location: CofC
Posts: 3,313
Default

Here's some money saving advice:

Since spur gears aren't true all the way around, the gear will not be a perfect circle. What you want to do is set the mesh to have a "tick" of play in the gears. Now spin the spur and pinion so that you can find the depressed side of the spur. Set the mesh to have a tick at that point. Then keep spinning it to make sure it isn't too tight on the other half of the gear.

This will save you money, b/c when most people blame their stripped spur b/c of tight or loose mesh, the mesh could have been right when you first looked at it, but the gear had a low side that was too loose. That low side will break the teeth and ruin the gear.

ChadCapece is offline   Reply With Quote
Old 06-15-2005, 11:52 PM   #6
Tech Addict
 
GReddy's Avatar
 
Join Date: Nov 2003
Location: san francisco, CA
Posts: 531
Trader Rating: 4 (100%+)
Send a message via AIM to GReddy
Default

k thanks

i ask this because i used the same electronics on my tt01 and the motor barely got hot

and now on my 414 the motor and esc gets really hot
GReddy is offline   Reply With Quote
Old 06-16-2005, 12:10 AM   #7
Tech Master
 
onnetz's Avatar
 
Join Date: Apr 2004
Posts: 1,727
Default

did you setup both cars to have the same rollout?
the mesh would have to be pretty tight to make the motor run hot.
onnetz is offline   Reply With Quote
Old 06-16-2005, 12:45 AM   #8
Tech Elite
 
rough512's Avatar
 
Join Date: May 2002
Posts: 3,454
Trader Rating: 12 (100%+)
Default

When I'm installing a 64p 36T pinion, I'd install a 37t pinion and mesh the gears so it's snug. Tighten up the motor screws then remove the 37T and re-install the 36T pinion.

Perfect mesh. Works every time . I still do try to find the portion where the gear mesh is 'tightest' when installing the oversized pinion.
rough512 is offline   Reply With Quote
Old 06-16-2005, 12:51 AM   #9
Tech Fanatic
 
Entropy's Avatar
 
Join Date: Feb 2003
Location: Singapore
Posts: 965
Default

The paper trick works in theory. However in the real world, no 2 papers are alike in GSM (thickness).

So dump the paper trick, unless you're meshing gas car gears.

For me I make sure i can rock the spur gear by feeling at the tightest mesh portion of the spur gear without visibly seeing the spur gear move.

Basically you can feel the play of the spur gear teeth and pinion but you shouldnt be able to see the spur gear move with your eyes.

Only ever stripped my spur gear twice. Once was when I forgot to tighten the motor on the mount, the other time was a crazy pebble got in between.
Entropy is offline   Reply With Quote
Old 06-16-2005, 01:08 AM   #10
Tech Addict
 
jland's Avatar
 
Join Date: Feb 2004
Posts: 667
Trader Rating: 74 (100%+)
Default

Here is a trick I learned that seems to work well on 64P. If you want to run a 24T pinion, put a 25T on and push the motor up to the spur, take it off and put the 24T on. Perfect mesh every time.
jland is offline   Reply With Quote
Old 06-16-2005, 01:45 AM   #11
Tech Elite
 
edseb's Avatar
 
Join Date: Jan 2004
Location: Laguna Niguel, California
Posts: 2,421
Default

Ooh, I like the idea of that technique; got to try that one.
__________________
RC Car Action Editor and Photographer
Carl Hyndman
edseb is offline   Reply With Quote
Old 06-16-2005, 07:48 PM   #12
Tech Addict
 
GReddy's Avatar
 
Join Date: Nov 2003
Location: san francisco, CA
Posts: 531
Trader Rating: 4 (100%+)
Send a message via AIM to GReddy
Default

it might be that its a 8:1 ratio not sure about the roll out so its probably because i had to hold the throttle all the way a hole lot more
GReddy is offline   Reply With Quote
Old 06-16-2005, 08:06 PM   #13
Tech Master
 
Jeff Brown's Avatar
 
Join Date: Nov 2003
Location: Orlando, FL
Posts: 1,913
Default

Quote:
Originally Posted by GReddy
it might be that its a 8:1 ratio not sure about the roll out so its probably because i had to hold the throttle all the way a hole lot more
Well, if the drivetrain ratios are different then you will need a different pinion. Other than that you should be fine.

Jeff
__________________
SXT Traction Compounds | www.TractionCompound.com
Jeff Brown is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
64 pitch gear set SteveJa R/C Items: For Sale/Trade 5 02-03-2008 09:55 AM
FS: 48 Pitch Gear set ewippler R/C Items: For Sale/Trade 5 10-16-2007 10:14 AM
A question about gear meshing bxpitbull Electric On-Road 8 09-19-2007 07:46 AM
Gear pitch tractorpull Rookie Zone 4 02-19-2006 02:28 PM
48 pitch gear set dmayhew25 R/C Items: For Sale/Trade 1 11-08-2005 11:38 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 04:06 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