Go Back  R/C Tech Forums > General Forums > Electric On-Road
Checkpoint 19turn spec mod >

Checkpoint 19turn spec mod

Checkpoint 19turn spec mod

Old 08-22-2006, 11:52 AM
  #256  
Tech Apprentice
 
Join Date: Jan 2005
Posts: 68
Default

The rubber o-ring removes the endplay on the shaft. You want to shim the shaft so the ring is just barely compressed when you put the endbell on. This way you get zero endplay, without side-loading the bearings.
Corner Weight is offline  
Old 08-22-2006, 02:25 PM
  #257  
Tech Addict
iTrader: (1)
 
radio_car_racer's Avatar
 
Join Date: Apr 2004
Posts: 543
Trader Rating: 1 (100%+)
Default 4 Cell 19t motor set-up

ran one of these out of the blister and won the C final here in the UK up against brushless & mods in an open event

now I know it's not going to beat a world's A finalist like Andy Griffiths but I would like some more go from it. I'm using IB42's

rears = 48mm / 1.89"

51.408mm (2.024") rollout = full throttle aprrox 80% of lap
56.549mm (2.227") rollout = overgeared, no go out of corners

what spring/brush combo are you all finding the best for carpet racing?
radio_car_racer is offline  
Old 08-22-2006, 03:17 PM
  #258  
Tech Addict
iTrader: (3)
 
Join Date: Jun 2006
Posts: 629
Trader Rating: 3 (100%+)
Default

ok im thinking about running the 19$ in my SB pro 4wd buggy. any sygestions for springs? the track is for 1/10 truck and the strait is about 75-80 ft long.

Matt
mat3833 is offline  
Old 08-22-2006, 04:29 PM
  #259  
Tech Champion
iTrader: (4)
 
AdrianM's Avatar
 
Join Date: Aug 2001
Location: Tampa, FL
Posts: 5,915
Trader Rating: 4 (100%+)
Default

Originally Posted by radio_car_racer
ran one of these out of the blister and won the C final here in the UK up against brushless & mods in an open event

now I know it's not going to beat a world's A finalist like Andy Griffiths but I would like some more go from it. I'm using IB42's

rears = 48mm / 1.89"

51.408mm (2.024") rollout = full throttle aprrox 80% of lap
56.549mm (2.227") rollout = overgeared, no go out of corners

what spring/brush combo are you all finding the best for carpet racing?
We are running in the 2.05" to 2.15" range on US tracks with the Money. 2.05 on tighter indoor tracks and 2.15 on more open tracks.

The bursh you run depends on how much work you want to to. Atlas brushes with standard springs (med) are really good on 4 cells. If you want go really fast this is good for 3 runs...the 2nd seems best. Then you need to cut and rebrush. Infinity brushes are just a tiny bit slower on 4 cells but last FOREVER. You still need to cut the comm every 3 runs but you just leave the brushes in there.

The keys to speed with the CP Money are shimming the arms with just a tiny tick of endplay with the arm centered in the magnets and breaking it in way longer than you think is necessary. I run it for 8 min at 2v with a fan. The long break in reduces arcing and lets you run a softer spring for less drag. Too short a break in leads to arcing, pitting and high rpm brush bounce with a loss of power late in races.
AdrianM is offline  
Old 08-22-2006, 04:49 PM
  #260  
Super Moderator
iTrader: (217)
 
Marcos.J's Avatar
 
Join Date: Sep 2003
Location: Semper Fi
Posts: 31,207
Trader Rating: 217 (100%+)
Default

Originally Posted by AdrianM
We are running in the 2.05" to 2.15" range on US tracks with the Money. 2.05 on tighter indoor tracks and 2.15 on more open tracks.

The bursh you run depends on how much work you want to to. Atlas brushes with standard springs (med) are really good on 4 cells. If you want go really fast this is good for 3 runs...the 2nd seems best. Then you need to cut and rebrush. Infinity brushes are just a tiny bit slower on 4 cells but last FOREVER. You still need to cut the comm every 3 runs but you just leave the brushes in there.

The keys to speed with the CP Money are shimming the arms with just a tiny tick of endplay with the arm centered in the magnets and breaking it in way longer than you think is necessary. I run it for 8 min at 2v with a fan. The long break in reduces arcing and lets you run a softer spring for less drag. Too short a break in leads to arcing, pitting and high rpm brush bounce with a loss of power late in races.
Hey Adrian what fdr do you recommend on a touring car? also what esc settings?(Keyence zero extreme)
Marcos.J is offline  
Old 08-22-2006, 06:45 PM
  #261  
Tech Champion
iTrader: (4)
 
AdrianM's Avatar
 
Join Date: Aug 2001
Location: Tampa, FL
Posts: 5,915
Trader Rating: 4 (100%+)
Default

Originally Posted by Marcos.J
Hey Adrian what fdr do you recommend on a touring car? also what esc settings?(Keyence zero extreme)
Run Infinitiy brushes with the stiffest spring Check Point makes. Gear it ~5.20 at Speedline. Be sure to run a fan blowing on the endbell. This helps the motor finish a run stronger. You have to be smooth and keep the corner speed up with this gear though.

Cut the comm every run. The Brushes will last 15 to 25 runs. I measure them and replace them when I loose 1mm in length or if the amps are less than 8A at 2v with a fan after re-breaking them in.

I really like this motor but I usually run an Orion 19 Laydown brush since no one has CP brushes in Tampa.
AdrianM is offline  
Old 08-22-2006, 06:52 PM
  #262  
Super Moderator
iTrader: (217)
 
Marcos.J's Avatar
 
Join Date: Sep 2003
Location: Semper Fi
Posts: 31,207
Trader Rating: 217 (100%+)
Default

Originally Posted by AdrianM
Run Infinitiy brushes with the stiffest spring Check Point makes. Gear it ~5.20 at Speedline. Be sure to run a fan blowing on the endbell. This helps the motor finish a run stronger. You have to be smooth and keep the corner speed up with this gear though.

Cut the comm every run. The Brushes will last 15 to 25 runs. I measure them and replace them when I loose 1mm in length or if the amps are less than 8A at 2v with a fan after re-breaking them in.

I really like this motor but I usually run an Orion 19 Laydown brush since no one has CP brushes in Tampa.
I have it now at a 5.97 fdr for now and I put a fan on the endbell. I have like 5 pairs of brushes for the CP Ill bring some with me on saturday.
Marcos.J is offline  
Old 08-22-2006, 11:27 PM
  #263  
Tech Champion
iTrader: (4)
 
AdrianM's Avatar
 
Join Date: Aug 2001
Location: Tampa, FL
Posts: 5,915
Trader Rating: 4 (100%+)
Default

Originally Posted by Marcos.J
I have it now at a 5.97 fdr for now and I put a fan on the endbell. I have like 5 pairs of brushes for the CP Ill bring some with me on saturday.
Gear it up! See you Saturday!
AdrianM is offline  
Old 08-23-2006, 09:24 AM
  #264  
Team EAM
iTrader: (79)
 
Join Date: Dec 2001
Location: Murfreesboro, TN
Posts: 9,498
Trader Rating: 79 (100%+)
Default

Originally Posted by AdrianM
The keys to speed with the CP Money are shimming the arms with just a tiny tick of endplay with the arm centered in the magnets and breaking it in way longer than you think is necessary.
If you want more RPM out of a motor try puttin all the shims at the bottom of the arm and just one .010 at the top. For more torque do the opposite.

You can call me crazy but it works!!

EA
EAMotorsports is offline  
Old 08-23-2006, 10:44 AM
  #265  
Tech Regular
 
Join Date: Apr 2006
Posts: 297
Default

Originally Posted by EAMotorsports
If you want more RPM out of a motor try puttin all the shims at the bottom of the arm and just one .010 at the top. For more torque do the opposite.

You can call me crazy but it works!!

EA
Is this true for all motors or just the CP$?
Stampede is offline  
Old 08-23-2006, 11:16 AM
  #266  
Team EAM
iTrader: (79)
 
Join Date: Dec 2001
Location: Murfreesboro, TN
Posts: 9,498
Trader Rating: 79 (100%+)
Default

Originally Posted by Stampede
Is this true for all motors or just the CP$?
All motors.

EA
EAMotorsports is offline  
Old 08-23-2006, 11:33 AM
  #267  
Tech Elite
iTrader: (1)
 
nashrcracer's Avatar
 
Join Date: Nov 2001
Location: LA - Lower Antioch
Posts: 4,950
Trader Rating: 1 (100%+)
Default

Originally Posted by EAMotorsports
If you want more RPM out of a motor try puttin all the shims at the bottom of the arm and just one .010 at the top. For more torque do the opposite.

You can call me crazy but it works!!

EA
you're crazy....
nashrcracer is offline  
Old 08-23-2006, 11:34 AM
  #268  
Team EAM
iTrader: (79)
 
Join Date: Dec 2001
Location: Murfreesboro, TN
Posts: 9,498
Trader Rating: 79 (100%+)
Default

Originally Posted by nashrcracer
you're crazy....
Maybe so...but it works!!

EA
EAMotorsports is offline  
Old 08-23-2006, 11:39 AM
  #269  
Tech Champion
iTrader: (13)
 
Korey Harbke's Avatar
 
Join Date: Oct 2002
Location: Redmond, WA
Posts: 6,169
Trader Rating: 13 (100%+)
Default

I wonder if it has something to do with moving the arm up and out of the magnetic feild... when you put all the shims on the bottom. And when you put the shims all on the top it produces more torque because more of the arm is sitting in the magnetic feild....

-Korey
Korey Harbke is offline  
Old 08-23-2006, 11:42 AM
  #270  
Team EAM
iTrader: (79)
 
Join Date: Dec 2001
Location: Murfreesboro, TN
Posts: 9,498
Trader Rating: 79 (100%+)
Default

Originally Posted by Sushi Boy
I wonder if it has something to do with moving the arm up and out of the magnetic feild... when you put all the shims on the bottom. And when you put the shims all on the top it produces more torque because more of the arm is sitting in the magnetic feild....

-Korey
Exactly. Although you dont gain as much with a stock motor as when you do this you get added resistance on the bushings. But with a 19 turn or mod your riding on the inner race of the bearing thats turning with the shaft anyway...so no drag!

EA
EAMotorsports is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.