HPRE

Menu

Members Rides

1956 Super Meteor


in
Members Rides

Welcome, Guest. Please login or register.
Did you miss your activation email?
December 17, 2014, 11:28:49 PM

Login with username, password and session length

 

Author Topic: rear sprocket  (Read 1395 times)

ace.cafe

  • Grand Gearhead
  • *****
  • Posts: 8837
  • Karma: 0
  • World leaders in racing or performance Bullets
Re: rear sprocket
« Reply #15 on: March 05, 2013, 05:24:14 PM »
Regarding the rear wheel bearing failure concerns:
If it is the same arrangement as the Iron Barrel(which I suspect it is), then it is important to check that the bearing spacer that goes over the axle between the bearings is the right length, and is square.
This spacer sets the distance between the inner races, so that the bearing sits in the proper relationship to the distance between the outer races. If this dimension is incorrect, it will force the inner races too far apart, or too far together, and will ruin the bearing in short order.
This is very common in Iron Barrel bikes.
And the Iron Barrel bikes also use 6203, so I suspect it is all the same layout.
Don't assume that all the parts are made properly. Check things yourself.
« Last Edit: March 05, 2013, 05:26:30 PM by ace.cafe »

gremlin

  • Grand Gearhead
  • *****
  • Posts: 1285
  • Karma: 0
  • "Do one thing each day that scares you"
Re: rear sprocket
« Reply #16 on: March 05, 2013, 05:59:32 PM »
does the flintstone company provide the rear brakes for RE?

no, that would be the rubble company.
1996 Trophy 1200
2011 RE B5
1979 XS11 w/vetter terraplane
1981 XS11 streetfighter
1983 Venture Royale
1982 CB750K
1971 Triumph Trident
1969 CB450
1966 Sears (puch) 250


no bs

  • Grease Monkey
  • ****
  • Posts: 309
  • Karma: 0
  • if it's got two wheels i'm on it
Re: rear sprocket
« Reply #17 on: March 05, 2013, 06:35:15 PM »
a wholley owned subsidiary of dr. scholl's?
killing bugs since 1972 2011 g5 deluxe

Ducati Scotty

  • Grand Gearhead
  • *****
  • Posts: 6372
  • Karma: 0
  • 2010 Teal C5
Re: rear sprocket
« Reply #18 on: March 05, 2013, 07:22:30 PM »
Aha!  I went to my C5 parts catalog, I didn't expect that much detail but it's there. 

The wheel bearings are listed as 6005 C3, no mention of seals at all.  The sprocket drum bearing is 6203 RS1 C3, single sided seal.  The seal is 25x40x7.  I'll confirm what I can when I take it all apart soon, though I don't necesarily plan on changing the wheel bearings.

I don't have the G5 catalog with me.  I'll check later when I get home.

Thanks,
Scott
« Last Edit: March 05, 2013, 07:37:03 PM by Ducati Scotty »

Arizoni

  • Grand Gearhead
  • *****
  • Posts: 4539
  • Karma: 1
  • "But it's a dry heat here in Arizona
Re: rear sprocket
« Reply #19 on: March 05, 2013, 09:25:48 PM »
My G5 parts list says the sprocket uses one (1) RE#145553, which is a 6005 C3 bearing.  No mention of seals but if a sealed bearing were used it would work fine.
For those with a measuring stick this 6005 bearing has a 25mm (.984") bore, 47mm (1.850") outside diameter and is 12mm (.472) wide.

The wheel hub uses two (2) RE#145552, which is a 6203-RS1-C3 bearings.
A measuring stick will show this 6203 bearing has a 25mm (.984") bore, 40mm* (1.5748") outside diameter and is 12mm (.472") wide.

As SinghG5 mentions, it is a good idea to measure what is there before getting a replacement.

* corrected diameter.  40mm was 47mm
« Last Edit: March 05, 2013, 09:37:57 PM by Arizoni »
Jim
2011 G5 Deluxe
1999 Miata 10th Anniversary

Royalista

  • phaneropter
  • Grand Gearhead
  • *****
  • Posts: 762
  • Karma: 0
Re: rear sprocket
« Reply #20 on: March 05, 2013, 09:32:09 PM »
E5 and G5, Rear wheel:
sprocket bearing 6005 C3 part#145553
bearing 6203 RS1-C3 (17*40*12) (2 pieces) part# 145552
grease seal 25*40*7 part# 141109

I could find no difference to C5. All numbers check.
moriunt omnes pauci vivunt

Ducati Scotty

  • Grand Gearhead
  • *****
  • Posts: 6372
  • Karma: 0
  • 2010 Teal C5
Re: rear sprocket
« Reply #21 on: March 05, 2013, 10:50:34 PM »
Anyone know if it would be a bad idea to just get 2RS bearings sealed on both sides for all three of these bearings?  Any reason one or both sides need to be open?  Just thinking it would keep more crud out and lengthen their life.

Scott

Arizoni

  • Grand Gearhead
  • *****
  • Posts: 4539
  • Karma: 1
  • "But it's a dry heat here in Arizona
Re: rear sprocket
« Reply #22 on: March 05, 2013, 11:13:13 PM »
The sealed versions come grease packed so they should work fine.
Jim
2011 G5 Deluxe
1999 Miata 10th Anniversary

Ducati Scotty

  • Grand Gearhead
  • *****
  • Posts: 6372
  • Karma: 0
  • 2010 Teal C5
Re: rear sprocket
« Reply #23 on: March 05, 2013, 11:21:30 PM »
Just wondering about things like extra friction from the seal making them run hotter and whether they need the room for the grease to expand.  It would suck to put sealed bearings on only to have them get hot, push out all their grease, then fail.

Scott

ace.cafe

  • Grand Gearhead
  • *****
  • Posts: 8837
  • Karma: 0
  • World leaders in racing or performance Bullets
Re: rear sprocket
« Reply #24 on: March 05, 2013, 11:50:45 PM »
Just wondering about things like extra friction from the seal making them run hotter and whether they need the room for the grease to expand.  It would suck to put sealed bearings on only to have them get hot, push out all their grease, then fail.

Scott

I usually run the shield only on the outer sides, since the inners are sealed from the outside elements. One shield gives less drag on the ball bearings.

Chumma has been using ceramic wheel bearings for the past year, and he really likes them. He says he can feel the difference. They are much more expensive than the steel bearings, and some people say it's a waste of money. We think they work and we have them on several Fireballs now.
« Last Edit: March 05, 2013, 11:53:51 PM by ace.cafe »

Ducati Scotty

  • Grand Gearhead
  • *****
  • Posts: 6372
  • Karma: 0
  • 2010 Teal C5
Re: rear sprocket
« Reply #25 on: March 06, 2013, 12:00:40 AM »
Thanks Ace.  I doubt I'll give up the extra $$$ for ceramic, I don't think I ride fast or hard enough to justify the cost.  Whatever good quality I can get locally will be fine.  I could swear the installed bearings are sealed on one side but I'll have to check when I have the wheel off.  Good point about not needing two sides sealed since the inners just ride over the spacer anyway.

Scott