carbon fiber seat

carbon fiber seat

Post by Nick Dangerous » Wed, 12 Sep 2001 07:44:09


Ok, My carbon fiber seat base should be getting here
tomorrow, tuesday. Is their anything I should know
before drilling it out? I plan to use my miyata seat
post again, i think its a miyata, whatever came with
my miyata seat. Im going to use the plastic base as a
rough guide and the seat post bracket as an exact
guide.

Once i drill it out, will I be able to upgrade to a
wilder rail bracket later? Um, what kind of bit should
I be using? If i cant find a drill press (one that ill
be allowed to use anyways) can I use a cordless drill?
Anything else I should know.

Thanks,

=====
Nick Cegelka


NickLikesFire   AIM

http://www.uni-psycho.cityslide.com

 
 
 

carbon fiber seat

Post by gbarne » Wed, 12 Sep 2001 08:46:01

Nick,

I used a 9/64" regular bit in a drill press for my base. You could use
a cordless, but my preference is for a drill press for precision, etc.
9/64 was the right size for the 1/4"x20tpi bolts I was using. I put
masking tape on both sides of the CF base before I drilled to make
marks easier to see and reduce splintering. I don't know if it helped,
but it worked.

You'll also want to drill a larger hole for the valve stem in the back
of the seat, I don't know what size this is, and the location will be
pretty obvious when you put your air pillow on the base.

I put a Miyata bumper on the back of mine and my handle on the front in
place of the front bumper. You can see pics of the whole deal on my
website ( Main --> Uni Handle).

You'll probably want to cut off the elastic band on the roach and put
your own grommets in to be laced up with a shoe lace.

Good Luck,

--
gbarnes
Posted via the Unicyclist Community - http://unicyclist.com/forums

 
 
 

carbon fiber seat

Post by John Chil » Wed, 12 Sep 2001 15:44:24

I don't remember what size drill bit I used, but you want something a little
undersized.  It's easy to make the hole bigger if necessary, but impossible
to make it smaller.  I used a hand drill (the totally manual kind that you
crank).  The carbon fiber is really easy drill.

After drilling it, use a small file to square off the corners of the hole.  
You want to end up with a square hole because the Miyata bolts have a square
section under the cap.  The square section keeps the bolts from spinning in
the hole.  If the hole is too big the bolts will spin in the hole, so be
careful as you are drilling and filing.  The carbon fiber is really easy to
file too.

I put masking tape on the base where the holes were going to go.  I used
double stick tape to position the seatpost and bumpers.  Then I used a pen
to mark the position of the holes on the masking tape.  After that I pulled
everything off, crossed my fingers, and drilled the holes.

The holes for the Wilder rail bracket are in the same position as the Miyata
holes, so you will be able to upgrade to the Wilder bracket later.

john_childs

Quote:
>From: Nick Dangerously

>Ok, My carbon fiber seat base should be getting here
>tomorrow, tuesday. Is their anything I should know
>before drilling it out? I plan to use my miyata seat
>post again, i think its a miyata, whatever came with
>my miyata seat. Im going to use the plastic base as a
>rough guide and the seat post bracket as an exact
>guide.

>Once i drill it out, will I be able to upgrade to a
>wilder rail bracket later? Um, what kind of bit should
>I be using? If i cant find a drill press (one that ill
>be allowed to use anyways) can I use a cordless drill?
>Anything else I should know.

>Thanks,

>=====
>Nick Cegelka


>NickLikesFire   AIM

>http://www.uni-psycho.cityslide.com

_________________________________________________________________
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carbon fiber seat

Post by Chris Reede » Thu, 13 Sep 2001 01:44:01

It wouldn't matter if you were going straight to a Wilder bracket, but
where you mount a Miyata post on a carbon base alters the seat angle.
If you have a stock Miyata post that you're putting on it, I'd mount it
somewhat rearward of center since that will kick the nose of the seat up
a little.  Probably not as much as would be ideal, but some.  

Chris

Quote:

> Ok, My carbon fiber seat base should be getting here
> tomorrow, tuesday. Is their anything I should know
> before drilling it out? I plan to use my miyata seat
> post again, i think its a miyata, whatever came with
> my miyata seat. Im going to use the plastic base as a
> rough guide and the seat post bracket as an exact
> guide.

> Once i drill it out, will I be able to upgrade to a
> wilder rail bracket later? Um, what kind of bit should
> I be using? If i cant find a drill press (one that ill
> be allowed to use anyways) can I use a cordless drill?
> Anything else I should know.

> Thanks,

> =====
> Nick Cegelka


> NickLikesFire   AIM

> http://www.uni-psycho.cityslide.com