Rear Brake Caliper

Finally finished the rear brake caliper bracket.
I an using a Honda Varadero 125 Rear wheel
so the bracket and caliper are matching.
There is an extra wedge shape welded to the
bottom to match up with the Yamaha YZF-R125
swingarm.

Chain Clearance

Here are some graphics to check the clearance of the chain
over the swingarm.

Engine Mounts final

Front engine mounts welded into place and primer
coated to combat the surface rust building up in my garage.

So engine in and lined up. I had concerns about the swingarm
angle and the relation between the final drive and the swingarm
pivot point. The engine has ended up a little lower than desired
this will have to be a compromise.

The swingarm angle is set approximately at 12.5 degrees which
I read somewhere that it was a desirable number.

Spaced out Hanger

In order for the swingarm to clear the left side footrest/hanger
i placed tapered spacers behind the hanger mounting points.
Another issue waiting for me is the clearance between the
swingarm and the expansion chamber on the left hand side.
i'll worry about that later.

Next up is breaking the engine . . .

Dog Bones

Measuring, Fabricating and Fitting of the
new links to connect Frame, Shock and
Swingarm. The links from the shock to
the frame are temporary until the engine
is fitted.
NEW LINKS ON THE LEFT,
ORIGINAL yzf-r125 ON THE RIGHT

YZF-R125 Swingarm

is now fitted with temporary spacers.
Wheel also fitted temporarily.
It all lines up nicely except for a minor issue . . .
the swingarm will not clear the left side hanger
Next up is fabricating the shock links and locating the shock
and flaring the hanger!

Play

So here is the rolling F2 YPVS frame.
The plan is to fit an existing aprilia RS125 front end
and a Yamaha YZF-R125 swinger with the existing
Honda Varadero wheel and brakes.