Re: 1979- CG/CB125 cafe build UK with cb200 twin conversion
The most challenging part of this build so far for me has been getting the Aprilia forks and disk and caliper to work with the CB200 front Hub, they are clearly not meant for each other!
It was mainly challenging because I don't have a lathe in my personal tool collection! However living in near Shoreditch in London has its advantages. I joined Hackspace (if you live in London you seriously need check it out) and was able to use their lathe to make up the adapter plate that I needed as well as the spacers for the front axle. I don't have photos of the adapter at the moment but will take some when I next have the front wheel off.
The adaptor essentially joins the stud patterns of the CB200 hub and the Aprilia disk brake as well as spaces it out the required amount to allow the Aprilia caliper to be used without any spacers.
So with alot of measuring, and a bit of trial and error I have a working and very powerful front disk on the bike, using only CB200 and Aprilia RS125 parts. Win.
I matched this up with a standard RS125 front brake hose, but used a yzf r125 master cylinder and lever as it doesn't have a seperate fluid reservoir, and is made by brembo. It's prettier and is keeping it in the brembo family!
I need to get this bike on the road and give it a good shake down. Once I am content the brake adaptor is safe I will post the Cad files for it online.
I'm also very fortunate to have a mum who is a seamstress.. So I put her in charge of upholstering my seat for me! 3 hours later, this appears!
It is made from marine grade uv resistant vinyl and coated thread, we have also sealed the seams. It's a first go, so we'll see how it lasts, I'm likely to get it redone in leather by a pro later on, but Im really happy with it for the foreseeable future.
Current progress shot below:
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