Project Fazer: The build thread

[JoeRock]

[quote author=Dead Eye link=topic=11731.msg133059#msg133059 date=1394405322]
Christo; have you taken any measurements relating to the offset of the rear sprocket compared to the front or even the stock? Will the sprocket even run on the same size chain as the stock Fazer? Ideally you need to take this into consideration before shelling out any cash making it fit. It's also prudent to check that the Bros swingarm will actually position the tyre centrally as you may find the spacers on each side actually need to be different sizes...

I have had a look, and I am pretty sure that the sprocket will need extending outwards on the engine side. By how much, I don't know yet. Based on rough numbers obtained from the forum and my prodding so callipers at it roughly, looks like the offset will be about 5mm out.

Good point on the fit of the chain, I haven't checked yet, but will do so tomorrow.

I am assuming (dangerous, I know!) that the Bros pivot ends are symetrical as regards the wheel centreline. I'd be surprised if they weren't, but I will be sure to double check later this week.

EDIT: Bollocks. The Bros uses a 525 chain, and the FZS uses a 530. The length isn't a huge issue: the Fazer uses 110 links, and the Bros 112. And considering that I'm changing the pivot point, I may be able to get away with a stock chain. The question is whether I need a new rear sprocket modified from a stock Fazer one or even machined from new.  :o
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First step is to make sure that the wheel is centred Christo, so measure to see if its centre in line with the swingarm, and if so that makes life a lot easier as you'll need equal size spacers to get it into the Fazer frame. Sounds like you'll also need some kind of collars manufacturer for the frame as well if the swingarm on the bros is smaller. Next stage is to do the sprocket, which might be more of an issue - you'll most probably have to get a custom one made to get it to the right spacing so it lines up with the fazer front sprocket, it's somewhat unlikely there'll be a sprocket already available that conveniently fits the bros wheel with the correct spacing (or even if there is, you'll have fun finding one!)