Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
I guess that the 'reasonably practical' test there is that if it's any more vertical it will foul the rear tyre, and/or break off against it.My mounting is an angled piece that runs between the two indicator bolts (ie 1 inch or so long, then a 90 degree turn, then runs between the frame rails then another 90 degree turn/1 inch. The 1 inch bits are drilled and bolt to the indicator/ mudguard mounting holes), so the number plate ends up similar to yours but the mount is fixed between the two ends/ arms of the frame. Doesn't bounce at all. (It was a bracket from a gas fire that just happened to be the perfect fit).
I had a little ride up to Graham and Julies place today, got a nice cup of tea and stole some some rare parts, thanks mate.Also had a look at the number plate mounts on their mongrels. Im not keen on side mounts and did not cut the back end off my bike in the hope of coming up with something.So on the way back I had a mooch round B and Q and bought some angle brackets. I think this will work but might end up using the brackets as templates for something more substantial.I dont think they will flex/bend but they might be a bit "bouncy. (already had the light/plate mount)
Looks a bit different than some boxes of parts. Balance the carbs before you strobe in the ignition and connect the strobe to a independent battery mate