HPRE

Menu

Members Rides

John Moulton's EFI Woodsman


in
Members Rides

41 Guests, 2 Users
dampking, JohnDL
Welcome, Guest. Please login or register.
Did you miss your activation email?
September 19, 2014, 05:58:07 AM

Login with username, password and session length

 

Author Topic: Broken Rear Sprocket Teeth  (Read 466 times)

ace.cafe

  • Grand Gearhead
  • *****
  • Posts: 8276
  • Karma: 0
  • World leaders in racing or performance Bullets
Re: Broken Rear Sprocket Teeth
« Reply #15 on: August 14, 2014, 03:47:34 PM »
Cool yeah I think it'll be fine. My 95 link stock chain is super stretched out and there's still room to tighten.

Any pointers for the sprocket and cush rubber replacement? The parts should be here today or tomorrow.
Pretty straightforward.
Just try to do a good job of getting the rear brake shoes centered and adjusted when you put it all back.
A little smear of grease on the brake actuation cams would be a good idea. Make sure it all moves well, and springs back.
Proper adjustment is to tighten the adjustment until the brakes drag, and then back off until they just barely don't drag.
Home of the ACE Fireball 535 Bullet,  Ace GP Hi-Lift Roller Rocker Head . Pistons, cams, etc. Highest performance Bullet engine mods available .  AVL mods. Redditch 700/750 Twin mods. UCE kit soon.

Please visit my new website:
http://autos.groups.yahoo.com/group/AcePerformanceBullets/

Superchuck

  • Grand Gearhead
  • *****
  • Posts: 565
  • Karma: 0
Re: Broken Rear Sprocket Teeth
« Reply #16 on: August 15, 2014, 01:55:22 AM »
Cool thanks a lot ace. The parts came today so I'll probably get into this Sunday

Superchuck

  • Grand Gearhead
  • *****
  • Posts: 565
  • Karma: 0
Re: Broken Rear Sprocket Teeth
« Reply #17 on: August 18, 2014, 02:14:09 AM »
Got it all together today and it wasn't too bad.  This video helped a lot with the steps by step wheel and sprocket removal: http://m.youtube.com/watch?v=sXWHho1rwak

Trickiest part was removing the bearings from the old drum.

Seems to be properly aligned but haven't taken it for a spin yet. Cheers and thanks again!

Philbomoog

  • Bulleteer
  • ***
  • Posts: 130
  • Karma: 0
Re: Broken Rear Sprocket Teeth
« Reply #18 on: September 03, 2014, 10:17:43 AM »
I'm putting a new rear tyre and chain on soon so I'm going to replace the cush rubbers as well as they appear cheap enough. Can you confirm the stock AVL Electra has 4 rubbers.

barenekd

  • Grand Gearhead
  • *****
  • Posts: 5220
  • Karma: 0
Re: Broken Rear Sprocket Teeth
« Reply #19 on: September 03, 2014, 05:26:26 PM »
Put a little grease on them to hold them in place and let the tabs slide in a bit easier.
Other than that pretty easy.
As for your question about chain length, it is somewhat critical as there isn't really as much adjustment as you might think. I added one to my G5 chain and it worked out OK. It's always better to be a bit long than too short! You can find half links for some chains, but they aren't very easy to come by.
You guys need to keep an eye on chain stretch as that is what tears up sprockets. The chain as it stretched, tries to climb up on the sprocket teeth and starts tearing the tops off. there have been several guys on the forum who have let the stock chain go too far and lost teeth. If you start to detect any wear on the sprockets, get rid of the chain fast! The rear sprocket on the REs is rather soft so they go away first. Most bikes will tear up the countershaft sprocket first.
Bare
2013 Moto Guzzi V7 Racer
2011 Black Classic G5 (RIP)
I refuse to tiptoe through life only to arrive safely at death
http://www.controllineplans.com

tooseevee

  • Grand Gearhead
  • *****
  • Posts: 1174
  • Karma: 0
  • There Are No Truths Outside The Gates of Eden
Re: Broken Rear Sprocket Teeth
« Reply #20 on: September 04, 2014, 06:43:00 PM »
I'm putting a new rear tyre and chain on soon so I'm going to replace the cush rubbers as well as they appear cheap enough. Can you confirm the stock AVL Electra has 4 rubbers.

             My parts book sez 4 cush rubbers; Part #144471
2008 ACE Head AVL Classic
1977 Shovelhead Hardtail Bobber

Jonno

  • Neophyte
  • *
  • Posts: 9
  • Karma: 0
Re: Broken Rear Sprocket Teeth
« Reply #21 on: September 05, 2014, 07:02:53 AM »
I just had my rear sprocket destroy itself overnight. I have lubed and cared for my stock chain for 17,000 kms, and the sprocket was 'squared off' still at the top of the teeth. When I changed it out and looked at the chain (not stretched), the chain was as stiff as a ......board at various points. I've no idea how or why though  ???
The bottom line in this - the stock chain seemed to destroy my rear sprocket.   >:(
Take Care

Jon

Superchuck

  • Grand Gearhead
  • *****
  • Posts: 565
  • Karma: 0
Re: Broken Rear Sprocket Teeth
« Reply #22 on: September 05, 2014, 04:13:41 PM »
Yeah after searching the forum there are a lot of people who junk the oem chain immediately to save sprocket wear. Wish I'd read those posts earlier. Oh well.  I also assume that a chain that's adjusted too loose but not stretched could cause the same sprocket destruction as well.

The avl does indeed have 4 cush rubbers. Sorry for the late reply. The sprocket swap was pretty straightforward and relatively quick. Hardest part was removing the bearings that are stuck in the brake drum.

Best of luck!