R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro Off-Road

Reply
 
Thread Tools Search this Thread
Old 01-02-2010, 12:31 AM   #1
Tech Adept
 
kodiakbear7070's Avatar
 
Join Date: Jun 2009
Posts: 206
Send a message via MSN to kodiakbear7070
Default Motor shimming?

Ive noticed on some of the threads that has been posted on hear about shiming such as if you run 30% then you need to have atleast 3 shims and if you are running 20% then its less so what is a simple way of knowing how to shim a motor and the amount of thickness they need to be. Cause what I belived to be right is starting to sound way wrong I just thought the less shims that you had then the more compression but from the few threads Ive seen it sounds all wrong.
kodiakbear7070 is offline   Reply With Quote
Old 01-02-2010, 12:49 AM   #2
Tech Elite
 
smokinu's Avatar
 
Join Date: Apr 2008
Location: MODESTO CA
Posts: 4,863
Trader Rating: 60 (98%+)
Default

you need to shim for the fuel...

it should specify in the motors manual..

most race motors now come with shimming for 25-30%

the best way to know is to get some solder bend in in an L shape stick it down the glow plug hole and turn the motor over
measure the head clearance (how smashed the solder is)
and re shim according to fuel percentage.
__________________
Marcus P.
\\Speedzone USA//Savox USA\\Caster Racing Parts//
www.speedzoneusa.com. www.casterracingparts.com
smokinu is offline   Reply With Quote
Old 01-02-2010, 01:08 AM   #3
Tech Adept
 
kodiakbear7070's Avatar
 
Join Date: Jun 2009
Posts: 206
Send a message via MSN to kodiakbear7070
Default

My motor is a Axe Rosi Mammba Evo x1 The instrucions was very vague meaning it did not mention that just said the fuel and oil content mix it is made for 30% witch I am running 30% Byrons fuel

Now could you give me the diameter of soldering to use and what the shiming should be for the amount of mash that is done to the solder Now that I have heard before with the soldering just forgot the diameter to use but did not know that the amount of mash could give you the indication of how much shim to use
kodiakbear7070 is offline   Reply With Quote
Old 01-02-2010, 01:16 AM   #4
Tech Elite
 
smokinu's Avatar
 
Join Date: Apr 2008
Location: MODESTO CA
Posts: 4,863
Trader Rating: 60 (98%+)
Default

Quote:
Originally Posted by kodiakbear7070 View Post
My motor is a Axe Rosi Mammba Evo x1 The instrucions was very vague meaning it did not mention that just said the fuel and oil content mix it is made for 30% witch I am running 30% Byrons fuel

Now could you give me the diameter of soldering to use and what the shiming should be for the amount of mash that is done to the solder Now that I have heard before with the soldering just forgot the diameter to use but did not know that the amount of mash could give you the indication of how much shim to use
you will have to search around for that as will i because i dont seem to have it bookmarked anymore.
__________________
Marcus P.
\\Speedzone USA//Savox USA\\Caster Racing Parts//
www.speedzoneusa.com. www.casterracingparts.com
smokinu is offline   Reply With Quote
Old 01-02-2010, 08:39 AM   #5
Tech Elite
 
Racecrafter's Avatar
 
Join Date: Apr 2007
Location: RC Mecca
Posts: 4,138
Trader Rating: 25 (96%+)
Default

Quote:
Originally Posted by kodiakbear7070 View Post
My motor is a Axe Rosi Mammba Evo x1 The instrucions was very vague meaning it did not mention that just said the fuel and oil content mix it is made for 30% witch I am running 30% Byrons fuel

Now could you give me the diameter of soldering to use and what the shiming should be for the amount of mash that is done to the solder Now that I have heard before with the soldering just forgot the diameter to use but did not know that the amount of mash could give you the indication of how much shim to use
Use 1/16" (.062) or close for solder. I prefer non flux core as you get a better measurement.

General rule is .023-.025" clearance is a good start for 30%.
__________________
Jimmy Wright

www.trackstarrc.com ~ www.facebook.com/TrackStarRC ~ Home of the 2x's Stock Nationals Champion TS-Gold & TS-Black tire sauce, TS-1+ lubricants, TS-Precision bearings, XRG Xtreme Racing Grease, Scale Auto Engineering, ElevenTech, WRD2, Carbon 12, Stiff Products
Racecrafter is offline   Reply With Quote
Old 01-02-2010, 08:46 AM   #6
Tech Elite
 
smokinu's Avatar
 
Join Date: Apr 2008
Location: MODESTO CA
Posts: 4,863
Trader Rating: 60 (98%+)
Default

Quote:
Originally Posted by Racecrafter View Post
Use 1/16" (.062) or close for solder. I prefer non flux core as you get a better measurement.

General rule is .023-.025" clearance is a good start for 30%.
thanks jimmy i have this thread bookmarked now,

.19-.22 is good for 20% right?
__________________
Marcus P.
\\Speedzone USA//Savox USA\\Caster Racing Parts//
www.speedzoneusa.com. www.casterracingparts.com
smokinu is offline   Reply With Quote
Old 01-02-2010, 08:55 AM   #7
Tech Elite
 
Racecrafter's Avatar
 
Join Date: Apr 2007
Location: RC Mecca
Posts: 4,138
Trader Rating: 25 (96%+)
Default

Quote:
Originally Posted by smokinu View Post
thanks jimmy i have this thread bookmarked now,

.19-.22 is good for 20% right?
Uhm Yes (.019-.022)


.1mm = .004"


Just be careful and pay attention to plug readings.
__________________
Jimmy Wright

www.trackstarrc.com ~ www.facebook.com/TrackStarRC ~ Home of the 2x's Stock Nationals Champion TS-Gold & TS-Black tire sauce, TS-1+ lubricants, TS-Precision bearings, XRG Xtreme Racing Grease, Scale Auto Engineering, ElevenTech, WRD2, Carbon 12, Stiff Products
Racecrafter is offline   Reply With Quote
Old 01-02-2010, 03:28 PM   #8
Tech Adept
 
kodiakbear7070's Avatar
 
Join Date: Jun 2009
Posts: 206
Send a message via MSN to kodiakbear7070
Default

Quote:
Originally Posted by Racecrafter View Post
Uhm Yes (.019-.022)


.1mm = .004"


Just be careful and pay attention to plug readings.
Quote:
Originally Posted by Racecrafter View Post
Use 1/16" (.062) or close for solder. I prefer non flux core as you get a better measurement.

General rule is .023-.025" clearance is a good start for 30%.
Thanks for your help
kodiakbear7070 is offline   Reply With Quote
Old 01-02-2010, 05:17 PM   #9
Tech Regular
 
Join Date: Oct 2009
Posts: 423
Trader Rating: 17 (95%+)
Default

ae rossi x1 comes shimmed for 30% should be a 3 or 30 on the top of the head button
koreanassasom is offline   Reply With Quote
Old 01-02-2010, 06:17 PM   #10
Tech Adept
 
kodiakbear7070's Avatar
 
Join Date: Jun 2009
Posts: 206
Send a message via MSN to kodiakbear7070
Default

Thanks reply sent
kodiakbear7070 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
23T motor thread davioh Electric On-Road 1263 08-01-2010 03:46 AM
Nitro Motor Shimming for Pinion? Help everyjuangohome Nitro Off-Road 8 01-14-2009 12:11 PM
STOCK motor forum porkybmx Electric On-Road 2817 12-11-2007 01:20 PM
motor shims..... SalvadoriRacing Electric On-Road 11 06-01-2004 05:58 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 02:25 AM.


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