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

STOCK motor forum

Community
Wiki Posts
Search

STOCK motor forum

Thread Tools
 
Search this Thread
 
Old 07-26-2004, 11:14 PM
  #1771  
Tech Master
 
DOMOisCOOL's Avatar
 
Join Date: May 2003
Location: Daly City, California, U.S.A.
Posts: 1,914
Default

Oops, my fault. His signature mentioned Yokomo.
DOMOisCOOL is offline  
Old 07-26-2004, 11:18 PM
  #1772  
Tech Champion
iTrader: (31)
 
JayBee's Avatar
 
Join Date: Mar 2004
Location: 12TH-MAN COUNTRY
Posts: 6,819
Trader Rating: 31 (100%+)
Post

Originally posted by DOMOisCOOL
To figure out FDR (Final Drive Ratio), find out the internal gear ratio of the car first. I believe you are driving a Yokomo SD? If so, the internal gear ratio is 2.35. Then find out the spur/pinion size.

Ex:
Spur/Pinion= ??? x 2.35 = FDR

72/21= ~3.4 x 2.35 = 8.0.

Hope this helps.
i'm not running my Yoke yet; with all the upgrades, it is about a $800-1000 car that i don't want to bust up. but right now i'm racing a Losi XXX-s RTR that i'm slowly but surely converting to an Graph.+. this is the car i'm learning technique, driving skill and tuning on. it has a 88t spur/21t pinion on a Monster stock.
You guys are great, thanks 4 all the help & keep it coming .

-JayBee
JayBee is offline  
Old 07-26-2004, 11:52 PM
  #1773  
Tech Elite
 
fatdoggy's Avatar
 
Join Date: Aug 2001
Location: MD USA
Posts: 3,642
Default

Monster stock - 24-30 rollout depending on the track. I run a 25-27 rollout on a medium sized track.


Q? - Is the BRCA Binary 2 magnets?

Last edited by fatdoggy; 07-27-2004 at 12:02 AM.
fatdoggy is offline  
Old 07-27-2004, 01:45 AM
  #1774  
Tech Regular
 
donoman's Avatar
 
Join Date: Apr 2004
Location: Daly City, CA
Posts: 264
Default

I run the Orion Core Stock motor.

When a local expert at the track tested it, he said it was a very slow turning motor. He said it must be a torque motor. I have no clue. I am running my TC3 with stock pinion and 25T spur. I can't figure out if I'm getting outrun in the straights due to cheap batteries(Reedy BlackLabel 3300), cheap ESC (Duratrax AutoSport), or wrong gearing.

So, is the Trinity Monster a better motor for a beginner? Dang I dunno about all this stuff.
donoman is offline  
Old 07-27-2004, 09:36 AM
  #1775  
Tech Master
 
rod_b's Avatar
 
Join Date: Jan 2002
Location: Covina CA
Posts: 1,033
Default

The Core Stock, Reedy MVP and Peak Hellfire are basically the same motor...based on the Reedy/Yokomo can I think!? They are torquier motors and would require a larger pinion. Based on your gearing, you're around 7.2 final drive ratio. I run my Cores around 6.25. A good tuning tip is to run them with narrowed brushes (0.140"). This is a "Big Jim" tuning tip and it's always worked for great me.
rod_b is offline  
Old 07-27-2004, 12:08 PM
  #1776  
Tech Master
iTrader: (22)
 
SMcpot's Avatar
 
Join Date: Jun 2004
Location: SoCal
Posts: 1,237
Trader Rating: 22 (100%+)
Smile

.

Last edited by SMcpot; 07-29-2004 at 01:54 PM.
SMcpot is offline  
Old 07-27-2004, 01:14 PM
  #1777  
Tech Elite
 
fatdoggy's Avatar
 
Join Date: Aug 2001
Location: MD USA
Posts: 3,642
Default

The Mvp uses a yok can and endbell. The orion and peak use a Top can and endbell.
fatdoggy is offline  
Old 07-27-2004, 01:26 PM
  #1778  
Tech Regular
 
donoman's Avatar
 
Join Date: Apr 2004
Location: Daly City, CA
Posts: 264
Default

How many of you guys own your own mini-lathe's to cut the comm's? I'm new to this hobby and was wondering if I needed to pick one up. I'm just racing stock, anyways.
donoman is offline  
Old 07-27-2004, 01:27 PM
  #1779  
Tech Master
 
DOMOisCOOL's Avatar
 
Join Date: May 2003
Location: Daly City, California, U.S.A.
Posts: 1,914
Default

Originally posted by donoman
How many of you guys own your own mini-lathe's to cut the comm's? I'm new to this hobby and was wondering if I needed to pick one up. I'm just racing stock, anyways.
If you race alot, you should pick one up. If you just race once in a while, use a fellow racer's.
DOMOisCOOL is offline  
Old 07-27-2004, 01:53 PM
  #1780  
Tech Elite
 
fatdoggy's Avatar
 
Join Date: Aug 2001
Location: MD USA
Posts: 3,642
Default

I've got a lathe. My best two investments in this hobby were a decient charger and a lathe. I'd say get one if you intend on racing every week. I cut after 4-5 runs and it's really much easier then asking others to cut your comm. If you'd rather not buy one just yet, offer someone a bottle of soft drink or a few bucks and they'll cut your comm for you.

Just a note, it's very annoying when you cut someones comm and it takes alot of passes to clean it up. At least have your comm cut every 8-10 runs if your racing.
fatdoggy is offline  
Old 07-27-2004, 05:33 PM
  #1781  
Tech Rookie
 
Join Date: Jul 2004
Posts: 2
Default

I have a P2K2 that should be in next week. Lemme know what you guys think!
I have had 3 of them and they are great. Right now I have a P2K Copperhead Pro with 30,600 RPM 116.7W 70.7%efficiency, 175N Torque, and they all run like they are lower than 20T, they are great motors
scherzo is offline  
Old 07-27-2004, 11:24 PM
  #1782  
Tech Champion
iTrader: (16)
 
Join Date: Jan 2004
Posts: 7,379
Trader Rating: 16 (100%+)
Default

Originally posted by donoman
How many of you guys own your own mini-lathe's to cut the comm's? I'm new to this hobby and was wondering if I needed to pick one up. I'm just racing stock, anyways.
Just show up for the racing at RC Tech in Daly City and someone can cut the commutator for you. I did three other racer's motors this past Sunday. You don't even have to be a "racer" for us to help you out.

See www.rctechonline.com for their race schedule.

Might need about $3 to buy replacement brushes to go with the comm cut.

After seeing some racing and talking with the locals, you should be able to decide about buying a lathe for yourself.
Still Bill is offline  
Old 07-27-2004, 11:29 PM
  #1783  
Tech Addict
 
JohnMatrix's Avatar
 
Join Date: Feb 2004
Location: Newark, CA
Posts: 608
Default

I have one but right now Im at the point that I do more harm than good when i use the thing.

Not good at it at all. And are more about cleaning them instead of cutting them.
JohnMatrix is offline  
Old 07-27-2004, 11:32 PM
  #1784  
Tech Master
 
DOMOisCOOL's Avatar
 
Join Date: May 2003
Location: Daly City, California, U.S.A.
Posts: 1,914
Default

Originally posted by XXX-S Bill
Just show up for the racing at RC Tech in Daly City and someone can cut the commutator for you. I did three other racer's motors this past Sunday. You don't even have to be a "racer" for us to help you out.

See www.rctechonline.com for their race schedule.

Might need about $3 to buy replacement brushes to go with the comm cut.

After seeing some racing and talking with the locals, you should be able to decide about buying a lathe for yourself.
Donoman told me you cut his comm on Sunday.
DOMOisCOOL is offline  
Old 07-27-2004, 11:50 PM
  #1785  
Tech Regular
 
Join Date: Jun 2004
Posts: 499
Default

i have a rtr tc3 and i plan to upgrade to a reedy spec 19t quad magnent motor, and i was wondering if i should just use the stock spur and pinnon gears with it or get better ones?
also is their so way to figure out a motors mph?
kh15 is offline  


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.