Go Back  RCU Forums > RC Cars, Buggies, Trucks, Tanks and more > RC Truggy
 Gear mesh problem with Mugen MBX5-T, engine is too far forward? >

Gear mesh problem with Mugen MBX5-T, engine is too far forward?

Notices
RC Truggy Trucks and buggies together make a truggy. Discuss all things truggy right here.

Gear mesh problem with Mugen MBX5-T, engine is too far forward?

Old 10-02-2009, 04:34 PM
  #1  
Thread Starter
 
Krawlin's Avatar
 
Join Date: Sep 2007
Location: Sierra Vista, AZ
Posts: 2,541
Likes: 0
Received 2 Likes on 2 Posts
Default Gear mesh problem with Mugen MBX5-T, engine is too far forward?

I have a Mugen MBX5-T with a Picco P3-28, and I am having some gear mesh, or better said "clutch bell position" issues. I can get the gear mesh set properly, however the spur/clutch bell teeth mating position is off. Basically, the engine sits too far forward, and the spur gear has a couple millimeters of the teeth not contacting the clutch bell, and the spur is very close to the bell itself. I am using a BCE chassis, and I dremel'd it a bit to move the motor mount back some, but it hardly helped. I also have to clutch bell shimmed as close to the flywheel as it can be without rubbing the flywheel pins. Anyway, the biggest problem about this is that it's starting to mess up the teeth on the clutch bell and spur gear. I cant seem to find a clutch bell that has the teeth machined right against the bell, which I think would almost solve my problem. Do Picco's just have a long crank and I would be better off to switch engines? Has anyone else had this problem? How did you fix it? And does anyone know of a company that makes an adjustable motor mount (allowing the engine to slide forward or backward) for the MBX5-T, or a motor mount that is adjustable from another vehicle that uses the same hole pattern that the chassis has? (I tried my OFNA ones and they don't work)

Anyway, thanks for any suggestions or help!
Old 10-02-2009, 05:40 PM
  #2  
Senior Member
My Feedback: (1)
 
Eganwp's Avatar
 
Join Date: Jan 2008
Location: Calgary, AB, CANADA
Posts: 756
Received 0 Likes on 0 Posts
Default RE: Gear mesh problem with Mugen MBX5-T, engine is too far forward?

I have the EXACT same problem with my ST-1 truggy and JPX .28 engine but no one's given me any tips on here. Teeth barley mesh, but it's been fine for over 3 gallons so far. I'm also running the BCE chassis but it was the same issue with the stock frame as well... I have no idea how other people are getting around this as the engine must be longer than most. May have to greatly enlarge the engine holes to make a Picco fit properly.

I'm just running it as is as it seems to be fine, and apparently so is everyone else???


Eganwp
Old 10-05-2009, 09:12 AM
  #3  
Senior Member
 
Join Date: Aug 2009
Location: , KY
Posts: 203
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Gear mesh problem with Mugen MBX5-T, engine is too far forward?

Interesting that a top of the line vehicle like that would have such a simple issue. Only option is to grind some material off so you can move the motor further back.
Old 10-05-2009, 03:16 PM
  #4  
K_B
 
K_B's Avatar
 
Join Date: May 2007
Location: Anchorage, AK
Posts: 1,655
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Gear mesh problem with Mugen MBX5-T, engine is too far forward?

What about a shorter flywheel collet? That would move the whole flywheel back; just gotta make sure it doesn't rub the crankcase.
Old 10-05-2009, 04:03 PM
  #5  
Senior Member
My Feedback: (1)
 
Eganwp's Avatar
 
Join Date: Jan 2008
Location: Calgary, AB, CANADA
Posts: 756
Received 0 Likes on 0 Posts
Default RE: Gear mesh problem with Mugen MBX5-T, engine is too far forward?

Not sure about Krawlin's, but I've removed all spacers, washers, etc and have the flywheel right up to the engine casing, thus a smaller collet wouldn't help as I can't gain anything more for spacing. Only way I can see it working is some custom made motor mounts or redrill the frame and risk the bolts always coming loose in the wide holes...
Old 10-07-2009, 09:08 AM
  #6  
Junior Member
 
Join Date: Oct 2009
Location: , UNITED KINGDOM
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Gear mesh problem with Mugen MBX5-T, engine is too far forward?

Hi there,

I've had this exact issue (3 destroyed clutchbells!) found the answer on another site - you can only use the Mugen Clutchnut - its smaller than normal nuts, moves the clutchbell backwards a few mm - job done !

Hope this helps


Neil
Old 10-07-2009, 12:54 PM
  #7  
Senior Member
 
supertib's Avatar
 
Join Date: Mar 2004
Location: , MB, CANADA
Posts: 7,241
Likes: 0
Received 1 Like on 1 Post
Default RE: Gear mesh problem with Mugen MBX5-T, engine is too far forward?

I have shortened a clutchnut using sandpaper !
Old 10-07-2009, 04:06 PM
  #8  
Senior Member
 
Join Date: Jan 2008
Location: Red Oak, TX
Posts: 464
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Gear mesh problem with Mugen MBX5-T, engine is too far forward?

"dito"
it's been way too loong since I ran either one of my nitros[&o]

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 Off
Pingbacks are Off
Refbacks are On


Thread Tools
Search this Thread

Contact Us - Manage Preferences 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.