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Join Date: May 2017
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Notice this part missing today

I was looking over bike and figuring out my luggage. Took seat off and noticed one of the rubber bumpers gone.
Old 08-14-2017, 02:48 PM
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do i remember right that you have a corbin? replace asap. rode with them missing for a few weeks and the paint around the edge of the seat pan got rubbed off. search ebay for "bmw bumpers" or something like that, they are used for seats and gas tanks on many oilheads

something like this, you might be able to find a set for even less: http://www.ebay.com/itm/181854369905

i used some kind of adhesive, rubber cement i think, to glue my current set on
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Last edited by darkonaut; 08-14-2017 at 04:05 PM..
Old 08-14-2017, 03:29 PM
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Have a Corbin, yes. Does not even seem like the hinge on the underside of saddle makes contact with them. I may just rig something with foam. Seems like if the seat was actually making contact with it, it would not have fallen off.
Diggin the bike more and more as I get some time in the saddle!
Cheers,
Sean
Old 08-14-2017, 04:05 PM
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The stock seat has a lip that curls under these, then the latch in the back holds it down. When you sit on the seat, the weight sits on these, so yes, I think you need to replace them. On my K bike they were loose because they were older, I ordered new ones and had to force them on the peg. I think the R bikes may be the same.
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Old 08-14-2017, 04:17 PM
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Brent
 
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I have some,
send a photo of the bottom of the corbin,
Old 08-14-2017, 04:20 PM
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the corbin base pan for these is...uh...not accurate. besides fitting too closely around the edge it tended/tends to rest on a small hump in the fiberglass in front of the bolted-on metal hinge/hook instead of sliding fully down to support itself on the hinge/hook. or maybe it was intentional not to have the hinge/hook support any weight, unlike the oem design?

if you figure out a good spacer to make that metal piece hold the seat up and back vs. the bumpers let me know!! otherwise it rests against the fairing panels and some amount of rubbing becomes inevitable.
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Last edited by darkonaut; 08-14-2017 at 04:36 PM..
Old 08-14-2017, 04:21 PM
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another thought I have is old inner tube. Wrap to desired thickness.
I will work on picture, Brent
Cheers,
Sean
Old 08-14-2017, 04:29 PM
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pics of underside of corbin. Sure seems like those rubber bumpers not needed.
Cheers,
Sean
Old 08-14-2017, 05:00 PM
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Brent
 
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the rubber bumpers should fit between the metal part and the pan
pretty certain you want them
Old 08-14-2017, 05:26 PM
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Until you get the real part, perhaps a drilled piece of wooden dowel with a piece of bicycle inner tube stretched over it would keep your paint from getting rubbed and keep you from always steering the bike in one direction.
Old 08-15-2017, 09:00 AM
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For $4.98 at the dealer, or mail order dealer, I would already have them.
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Old 08-15-2017, 12:48 PM
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unsafe at any speed
 
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Glue the new ones on, since your seat design does not keep them from working loose, otherwise you will lose another one.
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Old 08-15-2017, 05:34 PM
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Just go to OSH and get a rubber stopper, grind to the right size.
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Old 08-16-2017, 07:10 AM
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tm1100s,
What is OSH?
Local BMW here in Burlington area has one I am going to pick up Friday before I leave on my trip.
Gonna add some glue on both of em.
But, I still don't see how if seat pan actually rests on these, with my body weight on the seat, how the hell can they come off?
I don't believe that the bracket and seat actually rest on top of these.
Weather is looking better for my trip! Fingers crossed! Braaaaaaaaaaaap!!
Cheers,
Sean
Old 08-16-2017, 05:10 PM
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unsafe at any speed
 
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usually they come loose during installing/removing of the seat... not when actually riding the bike. Stock seat has molded plastic that cups around the rubber so less likely to lose them.. but it still has happened to people with stock seats.
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Old 08-16-2017, 06:51 PM
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Quote:
Originally Posted by vtguy View Post
tm1100s,
What is OSH?
Local BMW here in Burlington area has one I am going to pick up Friday before I leave on my trip.
Gonna add some glue on both of em.
But, I still don't see how if seat pan actually rests on these, with my body weight on the seat, how the hell can they come off?
I don't believe that the bracket and seat actually rest on top of these.
Weather is looking better for my trip! Fingers crossed! Braaaaaaaaaaaap!!
Cheers,
Sean
Sorry, maybe you don't have those out there - Orchard Supply Hardware stores. Any hardware store should have rubber stoppers.
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tm
(R12, R11, R1) + 00 then S, S, /7
Old 08-16-2017, 07:30 PM
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Quote:
Originally Posted by brentw1 View Post
the rubber bumpers should fit between the metal part and the pan
pretty certain you want them
I have the Corbin on the r1100s and YES, you DO want both rubber baby buggy bumpers there.
Old 08-17-2017, 04:29 PM
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Brent
 
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yes you want both, the older longer mounting pins like you have could break,
the later frames use shorter pins which is why the older and newer seats
wont interchange
Old 08-17-2017, 06:14 PM
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