Go Back  R/C Tech Forums > General Forums > Nitro Off-Road > Offroad Nitro Engine Forum
Clutch bell and spur too far to mesh. Help! >

Clutch bell and spur too far to mesh. Help!

Like Tree2Likes
  • 1 Post By BHutch
  • 1 Post By UrabusDenis

Clutch bell and spur too far to mesh. Help!

Old 06-13-2019, 03:26 AM
Tech Master
Thread Starter
iTrader: (36)
LoudOne's Avatar
Join Date: Feb 2011
Posts: 1,337
Trader Rating: 36 (100%+)
Default Clutch bell and spur too far to mesh. Help!

Good morning.. Iíve been upgrading my Serpent 811 RTR and the only thing left is the Novarossi engine that gives away the fact that it was once an RTR. I installed a Novarossi clutch with 13T bell and cannot get it close enough to the 46 spur to mesh. Do I need a much bigger spur or bigger bell? I even tried a 48 spur and itís still too far. Any help/guidance is appreciated.
LoudOne is offline  
Old 06-13-2019, 04:16 AM
Tech Master
iTrader: (25)
Join Date: Dec 2009
Location: Quinby south Carolina
Posts: 1,781
Trader Rating: 25 (100%+)

Seeing as normal gearing is 13/48 I wouldnít quikly assume 46 is incredibly small but I think itís more in the electric gearing range which makes me think your clutch Bell would need to be bigger but Iíve never ran electric or a serpent to tell you forsure if those are infact different then stock. I would check there tho and make sure your center diff gear is same as stock cause it sounds wrong.
Matt Piva is offline  
Old 06-13-2019, 04:29 AM
Tech Addict
iTrader: (8)
Join Date: Jun 2009
Location: RC Track
Posts: 691
Trader Rating: 8 (100%+)

Use the 48T spur with the 13T Serpent original bell.

what engine mounts do you have? If they are the RTR blocks it does not give you any play. If so purchase these


that will help with the mesh. Let us know the outcome
sebtarta is offline  
Old 06-13-2019, 07:36 AM
Tech Addict
iTrader: (5)
Big Will's Avatar
Join Date: May 2009
Location: San Antonio
Posts: 709
Trader Rating: 5 (100%+)

Sometime raising the engine can help. It might be to low to actually hit the spur. The new mounts should help but check if its sitting at the right height as well.
Big Will is offline  
Old 06-16-2019, 08:31 AM
Tech Initiate
Join Date: Feb 2018
Posts: 36

Not sure about the RTR but the serpent SRX8 line of buggies has their own clutch bells and spurs that are designed to not need mesh adjustment. Try the Serpent clutch bell and it should be a better mesh.
LoudOne likes this.
BHutch is offline  
Old 06-17-2019, 12:30 AM
Tech Master
UrabusDenis's Avatar
Join Date: Nov 2009
Location: Croatia
Posts: 1,006

I am pretty sure something else is the issue since that is very normal gearing, maybe check in the 811 forum for help? However if that really is the case (I am unfamiliar with the car) take the chassis to a machinist shop to enlarge the engine or center diff slots
LoudOne likes this.
UrabusDenis is offline  
Old 06-27-2019, 03:20 AM
Tech Master
Thread Starter
iTrader: (36)
LoudOne's Avatar
Join Date: Feb 2011
Posts: 1,337
Trader Rating: 36 (100%+)

So to conclude this thread, only Serpentís clutch and bell will work with the 811. Thanks to everyone who contributed to the post 🤙
LoudOne is offline  
Old 06-28-2019, 05:58 AM
Tech Rookie
iTrader: (1)
Join Date: Aug 2018
Posts: 17
Trader Rating: 1 (100%+)

I also have a Serpent 811 RTR and after using the lower engine mounts (I don't run the pull start) had the same issue with not being able to get the engine close enough to the spur gear to run a 13T clutch bell. But I have just picked up a 50T spur gear (complete diff actually) from the truggy and that gives more than enough adjustment to run a 13T or 14T clutch bell.

Bought the complete truggy diff because it was on special at Absolute Hobbies for 75% off
Pablo17 is offline  

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
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

Thread Tools
Search this Thread

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.