Drilling or not a Kona frame? A sacrilege?

[therapy]

Hi guys,

I have a question that is bothering me last few weeks. I have two Kona frames: 97 Lava Dome 14" and '98 Cinder Cone 18". First one is my wife ride, second will be my second bike - a singlespeed.

Now the problem: as you know both of them have 27,0mm seatpost diameter. For me its kinda hard to find some decent posts (400mm length, light, my with offset and both from good brand) for those two.

I had an idea of drilling the frame with a special tool to 27,2mm - so there are lots of posts in this size.

What do you think? Would it be too much for Kona fans? :?

Cheers
therapy

 

[boxxer]

Sounds like a good way to snap the frame, surely removing material would just weaken it.

 

[retrojon]

I'd just get a 27.2 post and rub it down a little. It will soon fit.

 

[guybe]

Dont do it, you will be crazy if you did, it will weaken the frame.

There is plenty 400mm x 27.0 seatposts around, I know it's no Syncros or Ringle but it's still good valve these Brand-X seatposts from CRC.

http://www.chainreactioncycles.com/Mode ... delID=6257

 

[hamster]

Buy a smaller post and fit a shim.

 

[FairfaxPat]

Don't drill the frame-it would be a BIG MISTAKE! Be patient and the right size seatpost will come to you. I also wouldn't recommend shimming a smaller one to fit.

 

[Inigo Montoya]

Hi guys,
Now the problem: as you know both of them have 27,0mm seatpost diameter. For me its kinda hard to find some decent posts (400mm length, light, my with offset and both from good brand) for those two.

its not hard to find a good post for that dia. e.g. thomson makes them
http://www.lhthomson.com/elite_sizes.asp
tune makes them
http://www.tune.de/produkte/sattelstuet ... stueck.htm
roox makes them
http://www.roox.at/roox/Components_web_ ... s_2006.htm
and there are several other options availabel too.

 

[kaiser]

Some here too




http://shop.ebay.co.uk/items/__27-0...lingQ5fbikepartsQ5fSR?_trksid=p3286.m63.l1177

 

[stew-b]

you dont drill a seat tube :shock: you ream it with a seat tube reamer.but you would be far better to look for a decent 27.0 post.

 

[hairstream]

I have done this - 26.8 IRD turned on a lathe down to 26.4. No problems so far. Depends on the wall thickness of the post. Proceed at your own risk. :twisted: