I have just has a rear disc mount welded to my attitude frame (1999).
I have fitted a Hope mini with 145mm rota. On my first ride ,I locked up the rear wheel and out shot the wheel, bending the rota and damaging my beloved Klein paintwork. I know the problems with their rear facing micro dropouts but wondered whether anyone had done the same and had overcome the problem. Would overtightening the QR damage the dropouts? Could I use two nuts on the skewer with washers to increase contact area?
Any advice would be really helpful
Thanks. Pete
is nothing sacred?
really should have left it alone.. nag over..
The dropouts aint really up the job with the forces a disc brake would generate.
More to the point is the frame ally or steel?
the seatstay'll fold soon so I wouldn't worry about it.
Yeah... disc brakes were not something Gary Klein envisaged when he came up with that god-awful rearward facing dropout design. Great for securely fastening the wheel against drive forces inward, but not so good at the huge rotational forces acting with disc brakes.
Personally I'd 've left it well alone and gone with a more suitable frame.
You could try really cranking up the skewers. Really, really cranking them. The skewers will snap well before the drop outs do, so don't worry about that!
I don't understand how you can be worried about the paintwork when you've had some bolts welded on to it.
That frame wasn't designed to run disc brakes and I reckon you'll run a risk of breaking the frame if you continue to try and use them. My worry wouldn't be the rear facing drop outs, it would be the fact that the seat stay weren't engineered to take the forces of braking in that area. Who knows how much that 11 year old frame has been weakened by having a welding torch blasted over it as well.
Klein attitude frames are still quite sought after, so if you really wanted to ride a bike with disc brakes you should have flogged the frame you have and bought another one with disc mounts from the factory. It's a shame, as I doubt your frame's worth anything now.
I can understand how you might want to continue riding the Attitude as they're amazing bikes (I have one and I'll never sell it), but why after 11 years of riding have decided that you needed discs?
Be careful riding that bike now. You could end up really hurting yourself.
Klein must have gone disc mounts in 2000 then as my Attitude has them, I thought my frame was a 1999 model though.
My wife's Attitude was bought in 1999 and it has a disc mount on it, albeit some weird size that standard discs don't fit.
I understand that there is some sort of Trek made conversion thing to fit IS discs but we have never bothered.
Thanks for all your comments. I feel suitably "told off" for doing such a thing. I love the bike and just thought I would bring it up to date in terms of braking, (that sound of pads on wet muddy rims) etc.
The mount was welded on by Vernon Barker.The attitude frames are tough and I'm a fairly light rider so hopefully the stays won't fold as some have mentioned.
I will put another rota on and really crank up the QR. If it happens again then I would have learned my lesson the hard way!!
Thanks.
