R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 02-08-2004, 04:48 PM   #1
Tech Master
 
Join Date: Aug 2003
Posts: 1,203
Trader Rating: 42 (100%+)
Default notchy diff on bloody knife just rebuilt

hi keith here i can use any help i can get i have a crc bloody knife i just rebuilt the diff and the action is extremely notchy never had this before i used all new parts used xxx-nt big diff rings new acer carbide balls all new bearings and new spacer and bevelle washer rebuilt 3 different diffs using 3 different balls from irs std balls 100 for 8 or 9 bucks acer and associated all have same feel i sand rings using wet crosshatch patern on 400 grit firs and finish with 2000 even tried the smaller d rings xxx losi rings am i using the correct rings should i be sanding them any info would help thanks
KEITH is offline   Reply With Quote
Old 02-08-2004, 05:44 PM   #2
Tech Regular
 
Join Date: Jan 2003
Location: Toronto, Ontario
Posts: 303
Default

Two things:
Ive never heard of using XXX-NT rings, they might not be the same size.
Also, it could just need to be broken in, try running the motor at 1 or 2 volts, lift the back end up, and hold one tire. repeat on the other side. 15-30 seconds each. See if its better then.
RC Paperboy is offline   Reply With Quote
Old 02-08-2004, 06:19 PM   #3
Tech Elite
 
imprsme's Avatar
 
Join Date: Feb 2004
Location: Va.
Posts: 3,733
Trader Rating: 74 (99%+)
Default

Replace the bearing in the right side hub! The outer most one.

You may be lucky enough to be able to spray it out with motor spray and relube, Try that first!

The CRC cars are good for blowing that bearing if you hit the right rear side of the car against anything.
imprsme is offline   Reply With Quote
Old 02-08-2004, 06:32 PM   #4
Tech Addict
 
sean's Avatar
 
Join Date: Mar 2003
Posts: 702
Default

imprsme is right on with the hub bearing. i just had a similar expierience with my carpet knife. i tried rebuilding a couple of times and the same problem. i was begining to think that the threaded end of my axle was bent slightly. as it turned out, it was my hub bearing the whole time. being that i was used to 1/10 pan car, i never considered that a hub bearnig would be bad after a couple of races(i tend to hit stuff )
sean is offline   Reply With Quote
Old 02-08-2004, 07:16 PM   #5
Tech Elite
 
Join Date: Oct 2003
Location: Green Bay,WI
Posts: 3,006
Trader Rating: 1 (100%+)
Send a message via AIM to R/C Anonymous
Default

flanged bearings are a good culprit for a notchy diff
__________________
Geoff C.
R/C Anonymous is offline   Reply With Quote
Old 02-08-2004, 09:23 PM   #6
Tech Master
 
Join Date: Aug 2003
Posts: 1,203
Trader Rating: 42 (100%+)
Default

thanks for all the info after reading posts i went to work on the diff and after rebuilding with new parts and i surfaced the rings it still felt notchy so i looked at the flanged bearing on end of hub so i took a non flanged bearing and put in the end of hub it went in so far i could fit another non flanged bearing on the end ( it stuck out a little bit) also then i put 2 axel shims and the spacer lip twards bearing then the bevelled washer and finaly the lock nut it was worlds better but still not as smooth as i would like so i took the beveled washer off and put lock nut back on WOW never have i felt a diff this smooth not to say this is a hot setup i will test this weekend at the track but anyone else having this problem it is more than likely that outside flanged hub bearing thanks to everone that replied you helped me greatly
KEITH is offline   Reply With Quote
Old 02-08-2004, 09:36 PM   #7
Tech Adept
 
Join Date: Dec 2003
Posts: 102
Default

The CRC diffs are extremely good, and last a long time. You must be careful not to overtighten the diff as it will permantly ruin the diff thrust bearing in the hub. Once this bearing is crunched, the diff action will be notchy.

I would get yourself some standard diff balls (100 for about $8), new "D" rings, some standard Associated diff grease (not stealth) and a new bearing for the diff hub (CRC's are the best for the buck). Put a small dot of diff grease on each ball. Tighten the diff slowly to ensure you don't overtighten.

The diff will be smooth and work excellent for many races.
insideline is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Huge CRC Knife and Bloody Knife Sellout 3.1, 3.2R and Standard Knife DustinR R/C Items: For Sale/Trade 16 12-14-2006 09:57 AM
Huge CRC Knife and Bloody Knife Sellout 3.1, 3.2R and Standard Knife DustinR R/C Items: For Sale/Trade 5 11-24-2006 09:34 AM
Huge CRC Knife and Bloody Knife Sellout 3.1, 3.2R and Standard Knife DustinR R/C Items: For Sale/Trade 3 11-09-2006 09:23 AM
i want a carpet knife 3.2r / bloody knife have cash or stuff to trade!! mjs3350 R/C Items: Wanted to Buy 11 08-26-2005 11:42 AM
WANTED: CRC Bloody 6 Pack / Bloody Carpet Knife impson R/C Items: Wanted to Buy 10 08-25-2004 10:25 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 02:18 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