R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 08-08-2012, 04:15 PM   #1
Tech Initiate
 
Join Date: May 2012
Posts: 44
Trader Rating: 1 (100%+)
Default Motor adjustment on Serpent 747

I recently purchased a 747 (used) and I've been going through the car replacing some of the parts that were broken and I'm now at the final phase. I'm going to replace the clutch but I wanted to know how to adjust the gearing so it's lined up properly. The motor mount doesn't have an adjustment for the picture shown so I'm wondering if I need to shim the clutch bell or should I shim from the flywheel?
Attached Thumbnails
Motor adjustment on Serpent 747-dscn4887.jpg  
Mliebs is offline   Reply With Quote
Old 08-08-2012, 08:15 PM   #2
Tech Fanatic
 
Hyde's Avatar
 
Join Date: Aug 2007
Location: Los Angeles, CA
Posts: 945
Trader Rating: 1 (100%+)
Default

Shim the clutch bell, not the flywheel.
__________________
MyForum> www.uncovertruth.forumotion.com
Hyde is offline   Reply With Quote
Old 08-08-2012, 08:20 PM   #3
Tech Regular
 
Join Date: May 2010
Posts: 352
Trader Rating: 2 (75%+)
Default

Quote:
Originally Posted by Hyde View Post
Shim the clutch bell, not the flywheel.
Can you explain why? I have the exact same problem on my 950R. The clutch bell and gears are not aligned.

Thanks
fung_kyle is offline   Reply With Quote
Old 08-08-2012, 09:38 PM   #4
Tech Elite
 
Michael_T's Avatar
 
Join Date: Oct 2001
Location: Sydney, Australia
Posts: 4,083
Trader Rating: 48 (100%+)
Send a message via MSN to Michael_T
Default

Quote:
Originally Posted by Mliebs View Post
I recently purchased a 747 (used) and I've been going through the car replacing some of the parts that were broken and I'm now at the final phase. I'm going to replace the clutch but I wanted to know how to adjust the gearing so it's lined up properly. The motor mount doesn't have an adjustment for the picture shown so I'm wondering if I need to shim the clutch bell or should I shim from the flywheel?
Experiment with different size cones, and if required, add shims behind the cone (to move the entire clutch assembly forward).
Michael_T is offline   Reply With Quote
Old 08-08-2012, 09:45 PM   #5
Tech Elite
 
lil-bump's Avatar
 
Join Date: Aug 2006
Location: The Cold Great Lakes
Posts: 2,964
Trader Rating: 83 (100%+)
Default

Quote:
Originally Posted by Mliebs View Post
I recently purchased a 747 (used) and I've been going through the car replacing some of the parts that were broken and I'm now at the final phase. I'm going to replace the clutch but I wanted to know how to adjust the gearing so it's lined up properly. The motor mount doesn't have an adjustment for the picture shown so I'm wondering if I need to shim the clutch bell or should I shim from the flywheel?
You need to shim the flywheel. Look at Page 24 of the 747 manual. It explains this in detail. You can download the 747 manual at www.Serpent.com

Next time do a search of the onroad forum. There is a thread that is dedicated to the Serpent 747. Try keep all of you upcoming questions inside this thread and you will get a quicker response.

Pass you soon... Enjoy
__________________
Elliott Hart
Serpent America
Desoto Racing Team
Chicky fan club member #9
One Eighth Racers of Toledo
lil-bump is offline   Reply With Quote
Old 08-08-2012, 10:55 PM   #6
Tech Master
 
Geezatec's Avatar
 
Join Date: Oct 2007
Posts: 1,460
Default

Motor mounts should be accentic. Loosen the screw on bottom of chassis, an lign the gears. It take too many shim,
shouldn't take more 2 shims. Its drastic. Another thing the motor mount maybe installed wrong, turn then around.
Or switch location.

Last edited by Geezatec; 08-08-2012 at 11:14 PM.
Geezatec is offline   Reply With Quote
Old 08-09-2012, 12:18 AM   #7
Tech Addict
 
Aza088's Avatar
 
Join Date: Dec 2009
Location: Sydney Australia
Posts: 684
Default

Quote:
Originally Posted by Mliebs View Post
I recently purchased a 747 (used) and I've been going through the car replacing some of the parts that were broken and I'm now at the final phase. I'm going to replace the clutch but I wanted to know how to adjust the gearing so it's lined up properly. The motor mount doesn't have an adjustment for the picture shown so I'm wondering if I need to shim the clutch bell or should I shim from the flywheel?
You will need to shim behind the Flywheel ( pushing the cone out further down the crank )

There is no other way this will not affect the performance The shims i think are the same as the shims used for the Gear box ( i think ) .

Hope this helps if you need photos i can post later tonight.
__________________
Shepherd | Brilliant RC | Matrix | Maxima | Xceed | KoPropo
www.bluerc.net
www.hobbyexpress.com.au
www.hootrc.com.au
Aza088 is offline   Reply With Quote
Old 08-09-2012, 03:03 AM   #8
Tech Elite
 
Serpent-Dan's Avatar
 
Join Date: Dec 2007
Location: Florida
Posts: 2,850
Trader Rating: 16 (100%+)
Default

Check your pinions. They may be on wrong
__________________
Inf1nity CM Beat1 Racing
Serpent-Dan is offline   Reply With Quote
Old 08-09-2012, 02:03 PM   #9
Tech Initiate
 
KweetNiet's Avatar
 
Join Date: Dec 2008
Posts: 28
Default

This is how ity is explained in the 747 manual:

Note 1: to align the clutchgears with the 2-speed gears,
it may be needed to use shim(s) 6x8x0.5mm ( for 6mm
shaft) or 7x8x0.5mm (for 7mm shaft) behind the cone.
This you can only see after assembly of the clutch.

Also there are different kinds of cones, see if these can help you out further so the gears align better.

On my 733 I also drilled out the holes on the engine itself, so I could align the a lot better for all different pinion/spur combo's
KweetNiet is offline   Reply With Quote
Old 08-09-2012, 03:22 PM   #10
Tech Initiate
 
Join Date: May 2012
Posts: 44
Trader Rating: 1 (100%+)
Default

Thanks for everyones help, I may try to shim it out tonight.
Mliebs is offline   Reply With Quote
Old 08-10-2012, 08:20 PM   #11
Tech Elite
 
Serpent-Dan's Avatar
 
Join Date: Dec 2007
Location: Florida
Posts: 2,850
Trader Rating: 16 (100%+)
Default

Your pinions are on wrong. There's no way you need to shim that much
__________________
Inf1nity CM Beat1 Racing
Serpent-Dan is offline   Reply With Quote
Old 08-11-2012, 06:05 AM   #12
Tech Initiate
 
Join Date: May 2012
Posts: 44
Trader Rating: 1 (100%+)
Default

I took the pinions off and one of them were on backwards but it still didn't make much of a difference. Here's another picture.
Quote:
Originally Posted by Serpent-Dan View Post
Your pinions are on wrong. There's no way you need to shim that much
Attached Thumbnails
Motor adjustment on Serpent 747-dscn4892.jpg  
Mliebs is offline   Reply With Quote
Old 08-13-2012, 08:39 AM   #13
Tech Regular
 
Join Date: May 2010
Posts: 352
Trader Rating: 2 (75%+)
Default

Quote:
Originally Posted by Mliebs View Post
I took the pinions off and one of them were on backwards but it still didn't make much of a difference. Here's another picture.
Have you shimmed your clutch yet? I've tried it on my car and it worked great. Now my 1st gear is spot on, but 2nd gear is still a bit off.

=)
fung_kyle is offline   Reply With Quote
Reply



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 01:06 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