Rounding of Miyata seat screws

Hello All!

When I was taking the seat cover off my Miyata seat one of the nuts
refused to loosen - it just spun around together with the srew. This was
because the square part of the srew (which holds the screw steady) had
become rounded. I fixed the problem by taking off all the other front and
rear bumper nuts and removing the seat cover as much as possible. I then
held the rounded srew’s head steady with vice-grips and took the nut off.
Feeling proud of myself, I reassembled the seat only to discover that
another screw had become rounded and wouldn’t do up tight! This means
that the bumpers cannot be properly re-installed. Furthermore it would
make any future seat upgrades (change of bumpers or airseat conversion)
very difficult. Right now the seat is still in pieces until I decide
exactly what to do as any messing around with it will probably make
things worse!

Has anyone met this problem before? Should I just buy new screws? Would
extra washers on each side of the seat plate help? Or would a steel plate
with square holes strategically placed for each nut & bolt work? Help!!!

Tony Keep on pedallin’!

>another screw had become rounded and wouldn’t do up tight!

I’ve had the same problem from time to time. I find that husky lockwashers
usually do the trick.

David Maxfield Bainbridge Island, WA

If it’s the bolt that has become rounded off, you can get replacements. That type of bolt is called a carriage bolt. A well stocked hardware store might have them. Otherwise you might have to go to a specialized fastener or screw shop. You can buy them, they’re just hard to find. If I remember right, the Miyata seat uses 6mm metric bolts.

If it’s the square hole in the plastic seat base that has become rounded then I would try David’s idea an use a lock washer.

john_childs

> If it’s the bolt that has become rounded off, you can get replacements.
> If it’s the square hole in the plastic seat base that has become rounded
> then I would try David’s idea an use a lock washer.

Hmmmm, looks like I’ve got one of each! It’s off to the hardware
store for me.

Thanks for the advice. Hopefully I should be able to fix this problem now.

Tony Auckland, New Zealand