Cycling UK Forum

I'm taking my Dahon Vitess D7HG to Cuba from the UK. When the bike is folded, the frame clamp sticks out a bit and could be damaged easily in transit. The solution would be to unscrew the frame lock hex bolt so that everything can be made flush. However I'm worried that I will lose the nut that the hex bolt screws in to. I'd like to buy a couple of spare nuts but can't find anything apart from an entire frame joint kit from C H White which is too expensive. Anyone know how to get these nuts? The nut is the one at the top of attached picture.

Thanks for the swift and helpful replies. I must work on my Google searching!

I have a ten year old Brompton 3 speed (M3) with a 44T chainring which I would like to use for touring in hilly places. In its lowest gear the bike travels 338cm for one pedal revolution which, for me, is much too high a gear for touring in hills. My touring bike does about 190cm for one pedal revolution in lowest gear and copes well with steep hills. I'd like to get a similar lowest gear for my Brompton but estimate that I would need a 25T chainring which would not give high enough gears on the flat. One solution would be to fit a double chainring with say 25T and 38T rings. I am happy to change manually between chainrings. Is this possible and if so what components do I need? I want to use off the shelf components if they exist and do it without any drilling or compromising the folding mechanism. I looked at a related thread on this forum but it did not address this question and I have been unable to find anything on the web. I don't think that there is room to increase the size of the rear sprocket to give me a low enough gear. Any help gratefully received. I can be contacted on clivegm@gmail.com

My new drop handlebar road bike is killing my back and I'm looking at a simple and cheap fix to reduce the reach.
I got a shorter stem fitted (free) and slid the seat as far forward as it would go but I still get still back pain (although not as much).
I noticed that the seat fitting on the seat post is set backwards so can I rotate the post so that it is forward so that the seat can go closer to the handlebars or would I doing something mechanically bad?

If this doesn't work I think I will have butterfly bars fitted (which will mean changing the brake and gear levers). What do people think of butterfly bars?