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Hi, I have been looking into making a single nut conversion for the Honda VFR800, because I like the way that it cleans up the rear of the bike and allow me to use other wheels, from a Ducati or other single sided swingarm bike. I will do it on my VFR800 which is now being rebuild from a damaged bike, and taking form. more stuff is to be done to this bike:-) forks, rear end clocks(CBR1000RR) fairing for a CBR1000RR also, so many things are getting done. The single nut conversion I was thinking of doing like the RC45 HRC axle and nut with left hand thread M46 and with a nut the same as the RC45 HRC one with 56 mm socket. I have done it like BLS, Larry did on his RC45. Making an insert for the NC30/35 axle, press fitted and welded to the NC30 axle. On my bike I am using a NC30 axle, you can use a NC35 also. So if anybody else than me, is interested in this conversion, I took delivery this Saturday, of 8 sets of single nut conversions. It where cheaper for me to get all eight than just two sets for me and a friend. price for each set where 80 £ UK. Just the HRC RC45 nut is around 95 £ UK each from Honda. I have the threaded part for the axle and the 46 mm nut with left hand thread. Price is depending on whether you do your own axle or send one and I send one back to you finished ready for you to install. If anybody is interested in these give me a PM. I will also do a lightweight rear brake, as I have made for my RC45. It's using an ISR caliper and disc and my own holder.I will try to get some pictures up today. A few pictures are uploaded.

Lots of people playing with fork changes etc, but without any real data to judge what effect the changes may or may not make. So I set up a spreadsheet and entered some typical examples to illustrate what happens. But first... This is done for the 5th gen 800 and it relies on original spec in order to be able to calculate what it does. If anyone needs data for a different model, providing the original spec is available, just let me know. I have based everything on the suspension being fully extended as that's the only reliable and repeatable state. Hard to measure in practice of course, but that doesn't matter as what we're concerned with really is changes away from standard, which is the line in red. The fork length is from the upper surface of a flat top yoke/triple clamp to the centre of the front axle. Gull wing yokes and/or forks not being flush with the top of the yoke will have to allowed for as it's impossible to build-in all possible variations. E.g. the standard forks I believe are 780mm overall. But they should extend above the upper surface of the (flat) top yoke by 41mm, plus the top cap which is about 2mm so the length to use is 737mm (780 - 2 - 41). In case that disappears geom800.tiff It can be seen that reducing the OFFSET has a significant effect on the TRAIL which suggests that it's not a good idea to replace with forks with a very small OFFSET. It can be counteracted by dropping the front and/or raising the rear to steepen the RAKE, but there's a limit to how far you can go with this. Anyway, hope this is of interest to others.