R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro On-Road > Onroad Nitro Engine Zone

Reply
 
Thread Tools Search this Thread
Old 01-31-2009, 01:50 AM   #1
Tech Initiate
 
Gerner's Avatar
 
Join Date: Mar 2008
Location: Denmark
Posts: 46
Default Crankshaft bearings or? Help.

Dear all,

I'm finishing my new car and face an issue I can't figure out.

Before I fit the clutch, I can turn the crankshaft resistance free until compression kicks in.

After installation of centax type clutch, there is resistance when I turn the crankshaft.

I can't really figure out what is wrong, bearing are lubed etc.

I took the flywheel of and tried a shim before the cone, same issue, the cone match the inner part of front bearing perfectly too.

I am also almost sure the crank has been pushed all the way in, it is very very tight, but believe I got it all the way.

Please help out, I can't remember if this is normal or something is wrong.

Thanks in advance
__________________
------------------
God does not exist

Putin for world prez
------------------
Gerner is offline   Reply With Quote
Old 01-31-2009, 02:40 AM   #2
Tech Champion
 
Roelof's Avatar
 
Join Date: Aug 2007
Location: Holland
Posts: 6,290
Send a message via ICQ to Roelof
Default

Most of the time the engine bearings are not inserted correctly. If you have a bearing tool just use it to push the bearings further in the crankhouse or otherwise heat the crankhouse to push them further.

If you did change the main bearing be sure it is faced in the right way.
__________________
The quality of an answer comes with the quality of the question.
Roelof is offline   Reply With Quote
Old 01-31-2009, 02:49 AM   #3
Tech Elite
 
rcfoolz's Avatar
 
Join Date: Sep 2003
Posts: 3,327
Trader Rating: 22 (100%+)
Send a message via Yahoo to rcfoolz
Default

Quote:
Originally Posted by Gerner View Post
Dear all,

I'm finishing my new car and face an issue I can't figure out.

Before I fit the clutch, I can turn the crankshaft resistance free until compression kicks in.

After installation of centax type clutch, there is resistance when I turn the crankshaft.

I can't really figure out what is wrong, bearing are lubed etc.

I took the flywheel of and tried a shim before the cone, same issue, the cone match the inner part of front bearing perfectly too.

I am also almost sure the crank has been pushed all the way in, it is very very tight, but believe I got it all the way.

Please help out, I can't remember if this is normal or something is wrong.

Thanks in advance
what engine and is it new? Did you replace the bearings? Sounds like the rear bearing isn't seated correctly
__________________
Am I going back racing?...Hmmm.. Not anytime soon... But soon enough.
rcfoolz is offline   Reply With Quote
Old 01-31-2009, 03:35 AM   #4
Tech Initiate
 
Gerner's Avatar
 
Join Date: Mar 2008
Location: Denmark
Posts: 46
Default Brand new

Quote:
Originally Posted by rcfoolz View Post
what engine and is it new? Did you replace the bearings? Sounds like the rear bearing isn't seated correctly
Hey,

It is a brand new OS TZ
__________________
------------------
God does not exist

Putin for world prez
------------------
Gerner is offline   Reply With Quote
Old 01-31-2009, 05:50 AM   #5
Tech Master
 
JetMD's Avatar
 
Join Date: Jan 2006
Location: Richmond VA
Posts: 1,172
Trader Rating: 1 (100%+)
Default

I had a os tz in my mtx4 and I didn't have to shim the cone. Sounds like maybe a manufacturing defect. Possibly the factory didn't get the bearing seated all the way? Don't know.
__________________
www.vorra.org

MINO Racing
JetMD is offline   Reply With Quote
Old 01-31-2009, 02:13 PM   #6
Tech Initiate
 
Gerner's Avatar
 
Join Date: Mar 2008
Location: Denmark
Posts: 46
Default Fixed

Thanks guys, you were all right

The front bearing was not seated properly, I don't have a bearing installer, so gave it a little tap with a hammer and works great.

Next thing for the toolbax, engine bearing tools

Thanks
__________________
------------------
God does not exist

Putin for world prez
------------------
Gerner is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Nitro On-Road Addict sa RC Manila Racers 12522 12-27-2015 06:51 PM
The Big Locked Thread donitaROSE Manila Racers 89718 03-26-2015 08:17 AM
Kyosho VoneR Thread neons Nitro On-Road 12206 06-29-2012 04:19 PM
Sirio S21 CL7B .21 Long Stroke marki Offroad Nitro Engine Forum 398 10-12-2011 02:23 AM
Serpent 710 Ron C. Nitro On-Road 23347 03-16-2010 02:47 PM
Help! - My Teamlosi LST RC truck won't start, maybe engine broken? helgso Nitro Off-Road 61 05-26-2009 06:52 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 08:21 AM.


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