Since I appear to be stuck with a Corbin seat for my 919, I'm thinking of putting it on my bike so I can send my stock seat into Sargent to be customized before the sale ends. As reported elsewhere, the seat doesn't actually fit my 919. The latch won't engage, so there is nothing to hold it in place.
After some investigation, I added 5 washers to each bolt to raise the latch about 1/3" further from the seat. I still have to push down on the seat firmly with a knee or elbow to get it to catch, but at least it works now. (I can't add any more washers without getting longer bolts.)
Here's what the latch originally looked like:
And here's what the latch looks like now:
Has anyone else experienced this problem with a Corbin seat? Do you have any better solutions?
Don't bother suggesting I remove the rubber stops. I tried that, but it made no difference. They (the two that you can see here) don't seem to hit anything. The only problem seems to be that the latch doesn't reach far enough into the lock because the shape of the seat does not allow it to fit snugly at the rear.
My Corbin always fits snug, and sometimes I have to wiggle it around to get it to fit, but I always have to put an elbow into it to make it latch. I don't think I have that much of a gap. You don't have anything in middle of the area under the seat, laying on the frame, do you? Sometimes my manual will slide down and keep the seat from latching all the way. Perhaps something is keeping the seat from seating all the way?
I bought my bike with a Corbin seat on it and haven't had any problems. I can't put much under the seat except the manual and a rag, but the seat latches just fine. No elbows or knees required. Just click into place.
this is a common problem though i only know of 1 or 2 others that actually had to go the washer route
mine just takes a bit of a shove and it's latched
make sure that you're gettin the front of the seat tucked under the catch by sliding the seat forward
also, if the rubber stops have been moved for whatever reason (or maybe weren't positioned correctly from the outset), adjust them so that the seat sits as low as possible
if u get a chance, post of pic of the bottom of your corbin and i'll compare it to mine, see if they are pretty much in the same place
you shouldn't have too much of a problem, certainly shouldn't need all those washers...
oh, and it's not that it doesn't fit "your" 919...tell ya one thing about hondas, those frames are identical, only thing that would mess that up is the bike gettin banged up...so if it doesn't fit yours, no doubt there an issue w/ the pan mold...maybe missed a layer when they were glassin it
My guess is that you have a seat that isn't correct for the model year bike that you have. I have seen differences in the pictures from year to year and I would guess that you have a support post that is making contact on the bike that shouldn't be there. Obviously a simplified answer... but maybe try to get a part number correlation between the set and your bike...
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I wrote Corbin today, asking for their suggestions and if it's possible that they made different seats for the 919. Here's their response:
Originally Posted by Chad at Corbin
Not sure what might have happen one this one. It's not un common to have
to use a 2-3 shims to have one of our sadles latch. The Rubber bumpers
we use are very stiff and will break-in with time.
If this is used not sure why it has not broke in already. It Hard to say
sometimes what happens.
He doesn't really say whether or not they made different seats, but he does indicate the problem I'm having is extreme. So, no real solution yet.
BTW, my seat is the same model that ratdog mentions, H-919-GL. Mine was assembled by Carlos. Maybe he doesn't do the same quality of work that Enrique does.
I had a Corbin for my popular Kawie that never fit (very loose), so I went back to the 2x6 comfort of the exact fit stock. It must be impossible for Corbin to exactly match the stock pan without the MFG's CAD dbase. I rode 300ml past Corbin and paid more to BMS for a custom seat using the stock pan. Corbin should offer to fix your fit issue GRATIS!
I inherited a Corbin when I bought my '03 and it fits great, no extra pressure needed to latch. However I did have a Corbin for a previous bike that did require pressure to set into place and latch. As a possible solution, try putting some wide masking tape in areas underneath and install a few times. If something is rubbing it may be easier to see where based on damage to the tape. I'm sure if you tinker with it a bit more you will get the fit straightened out.
On another note, you mention that ou are stuck with the Corbin seat. Just my opinion, but if I had to struggle just a bit to get my Corbin set correctly onto the bike I would consider it a small disadvantage compared to the benefits of having the Corbin to ride on. If you have ever compared the Corbin ride for ride against the stock seat you would probably do whatever it takes to get it onto the bike. I probably shouldn't be that way but the benefits far outway a snug fit.
By grinding down the two rubber bumpers in the middle of the seat (about 1 foot up from the latch), I've reduced the washer requirement from 5 to 3. I may grind them further, but I want to leave some rubber for cushioning. (They are now 1/2 the original height.)
In the picture, you can see the only other place where the bumpers hit anything, in the front. They are dented in where they push into the sides of the frame top.
PS: mk919, I said I was "stuck" with this seat because the improper fit is not the only problem with this seat, but you will have to read about that elsewhere. Nick, I didn't pay any money to Corbin, so I'm not going to complain about their service.