On one of my recent posts Iain commented that the mountain bike in the photos really helped to give a sense of scale to the bridge, showing just how small it really is. He was right of course, but unfortunately I couldn't find a decent 4mm scale mountain bike that I could buy. All the bikes I could find were both old fashioned and fairly chunky looking, and if I'm modelling the bridge as it appears now I needed something more modern looking. What I did have was a selection of different sized brass and nickel silver rod and an internet full of pictures of mountain bikes. I also discovered that most mountain bikes use 26" wheels making it easy to scale a side on photo to the right size.
I spent about an hour working out which sized rod to use for the different parts and how I'd construct a model and then about three hours slowly taping small bits of wire onto a wooden board while they were soldered together. The result is this.
Obviously it still needs some cleaning up and then painting (and possibly a chain adding) but I'm really happy with how it's turned out. It's my first real scratch built, completely soldered, model (at least I can't think of anything previously) and while it was a challenge to build the end result seems to have been worth while.
Given that I'm fairly happy with the size of the bike it does mean that on my model the ground doesn't rise quite as steeply from the stream as the bike rests lower down the embankment than in real life, but still I think it does it's job quite well.