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What is compromised by leaving Sprocket O-ring out?
Just replaced the rear tire on my F3S and noticed the infamous (sometimes missing) sprocket O-ring was pinched and distorted. Whatever sealing function it originally provided was severely compromised. I called for the part at the local dealer, but the wait was over a week. I decided to leave it out this time and order a couple of new ones (one as a spare) for the next tire change. I'm wondering what I may be compromising by leaving it out. The F3S is mainly my local trike and never gets ridden in rain. That honor will go to my "new" 2018 RTL. I just changed rear the tire on it, and the Oring is in good shape. If the Oring is meant as a last stand water seal, its omission shouldn't be a problem. Rear tire on each Spyder is now a General Altimax RT45.
Last edited by Peter Aawen; 07-14-2023 at 12:53 AM.
Reason: Expanded title to briefly ask the question... ;-)
Spyder daily driver - 2015 F3S magnesium - grocery getter
BajaRon swaybar, Shad sidecases and Givi top case with Admore kits, adjustable brake rod, LaMonster LED headlights, Stebel Nautilus, Zumo 396, FOBO TPMS, F4 Customs windscreen and bump skid
Front Tires - 175/55R-15 Yokohama AVID S34FA SL
Rear - General Altima RT45
Spyder touring buddy (White-Whale) - 2018 RTL pearlescent white - set up for touring and local dates with SWMBO.
LaMonster LED headlights, Stebel Nautilus, Zumo 396, Spyder cuff, FOBO TPMS, driver adjustable backrest, rear view mirror LED turn signals, and Eastern Beaver PC-8R fuse box. Baja Ron Ultra Sway Bar on the way.
Front Tires - Stock Kendas
Rear - General Altima RT45
Other motorcycle transport - 2010 Honda NT700VA Deauville and assorted vintage Japanese bikes
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Originally Posted by mikthebik
Just replaced the rear tire on my F3S and noticed the infamous (sometimes missing) sprocket O-ring was pinched and distorted. Whatever sealing function it originally provided was severely compromised. I called for the part at the local dealer, but the wait was over a week. I decided to leave it out this time and order a couple of new ones (one as a spare) for the next tire change. I'm wondering what I may be compromising by leaving it out. The F3S is mainly my local trike and never gets ridden in rain. That honor will go to my "new" 2018 RTL. I just changed rear the tire on it, and the Oring is in good shape. If the Oring is meant as a last stand water seal, its omission shouldn't be a problem. Rear tire on each Spyder is now a General Altimax RT45.
That O-Ring is meant to do more than keep water out. Thought that is probably it's main function. It also keeps dust, etc., out as well. But if you replace it in a reasonable amount of time, you should be fine.
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If you happen to have a couple of smaller or one larger o'rings of the same diameter , a single edged razor blade and a drop or two of super glue it's easy to make a replacement. Let me know if you need details.
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You could have just smeared a ring of silicone sealer around the O-ring grove before you put it together. Should be Ok anyway, if you have sealed bearings on the rear axle.
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Last edited by Peter Aawen; 07-14-2023 at 12:07 PM.
Reason: Caps & ' 's ;-)
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Originally Posted by BajaRon
That O-Ring is meant to do more than keep water out. Thought that is probably it's main function. It also keeps dust, etc., out as well. But if you replace it in a reasonable amount of time, you should be fine.
Thanks Ron. I agree. There are seals in front of the sprocket and wheel bearings, and I believe the bearings are sealed. The Oring seems to provide a bit of backdoor water and dust sealing to the sprocket and its bearing. Based on my environment, I'm good with leaving it out til the next tire change. If I see issues when I do that, I'll report back.
Spyder daily driver - 2015 F3S magnesium - grocery getter
BajaRon swaybar, Shad sidecases and Givi top case with Admore kits, adjustable brake rod, LaMonster LED headlights, Stebel Nautilus, Zumo 396, FOBO TPMS, F4 Customs windscreen and bump skid
Front Tires - 175/55R-15 Yokohama AVID S34FA SL
Rear - General Altima RT45
Spyder touring buddy (White-Whale) - 2018 RTL pearlescent white - set up for touring and local dates with SWMBO.
LaMonster LED headlights, Stebel Nautilus, Zumo 396, Spyder cuff, FOBO TPMS, driver adjustable backrest, rear view mirror LED turn signals, and Eastern Beaver PC-8R fuse box. Baja Ron Ultra Sway Bar on the way.
Front Tires - Stock Kendas
Rear - General Altima RT45
Other motorcycle transport - 2010 Honda NT700VA Deauville and assorted vintage Japanese bikes
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I will be fitting new rear rubber and a TPMS soon.
What are the dimensions of this O ring?
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Originally Posted by mikthebik
Thanks Ron. I agree. There are seals in front of the sprocket and wheel bearings, and I believe the bearings are sealed. The Oring seems to provide a bit of backdoor water and dust sealing to the sprocket and its bearing. Based on my environment, I'm good with leaving it out til the next tire change. If I see issues when I do that, I'll report back.
I'm a firm believer in " if it's not Broke Don't fix it " ..( I have 76,000 mi on my oil " O " rings )... yours didn't break .... however it is compromised ..... How many miles do you think before next tire change ????? ... good luck ....Mike
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Last edited by mikthebik; 07-17-2023 at 05:09 PM.
Spyder daily driver - 2015 F3S magnesium - grocery getter
BajaRon swaybar, Shad sidecases and Givi top case with Admore kits, adjustable brake rod, LaMonster LED headlights, Stebel Nautilus, Zumo 396, FOBO TPMS, F4 Customs windscreen and bump skid
Front Tires - 175/55R-15 Yokohama AVID S34FA SL
Rear - General Altima RT45
Spyder touring buddy (White-Whale) - 2018 RTL pearlescent white - set up for touring and local dates with SWMBO.
LaMonster LED headlights, Stebel Nautilus, Zumo 396, Spyder cuff, FOBO TPMS, driver adjustable backrest, rear view mirror LED turn signals, and Eastern Beaver PC-8R fuse box. Baja Ron Ultra Sway Bar on the way.
Front Tires - Stock Kendas
Rear - General Altima RT45
Other motorcycle transport - 2010 Honda NT700VA Deauville and assorted vintage Japanese bikes
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Originally Posted by Peter Aawen
I know this is not gonna be much help if you're looking to get one in before you need it, but for what it's worth, this thing is a fairly large diameter 'O' ring with a pretty small cross section that fits in the groove between the bolt on hub extension and the centre of the rim proper on the 2-part rims.
I think your F3 may still have the 2-part rim, but IIRC it was about then or soon after that BRP changed to a single piece rim - effectively the same 'Form, Fit, & Function' piece of kit, just made in one piece instead of having to bolt the 2 pieces together with an 'O' ring between them....
Cheers. Just went out and had a sticky beak. Looks like it is a 1 piece rim.
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