Friday, July 31, 2015

Spares: Motor Reflection

Unboxed the new $40 top end from eBay and found a real gem in an excellent condition, standard size cylinder.  Sometimes lucky, sometimes unlucky with these spare parts.  Guess it all evens out.  The clutch cable I just bought for $13 had the right part number for the early 40" cable, but turned out to be the 44" version.  Go figure.

Didn't really do anything specific besides lay out all the spare engine parts to mull them over and soak it all in again.

The #1 crankshaft from the old "Complete Late Bottom" is distinguished by having a clutch guide that's frozen in place and neither bearing is all that great.

The #2 crankshaft has one excellent bearing and one that's pretty rough.  The flywheels also have holes in them, so that's an easy way to distinguish the Early crank.

Too bad the bearings are not easily replaced (easy to remove with a tool, but hard to get new ones in with a multi-ton press, or so Clymer says).

Con-rod to flywheel clearance was good on both, too.  Crank #1 = .279mm.  Crank #2 = .406mm.

Also unboxed the new hub, which was very clean and fresh.  Combined with new spokes it would make a good "model" wheel to practice truing.  Just need a really clean rim, which I don't currently have.

The top end also came with a head cover and points base plate in dirty but otherwise good condition.




























Thursday, July 30, 2015

Ivy: Replace Sprocket Keepers

Swapped Ivy's old keepers for new ones.  Also realized that the grey swingarm is wider all the way down, which means the rear axle spacing is different, as well as the mounting points for the cushions.  Is it really S90?

Also monitoring progress of the rim in its Evapo-Rust dip.  Reset the rear brake arm to the downward position.  Put the original 45t sprocket in for its own dip.  Verified the "H" type rear spacer is longer than the plain one.















Tuesday, July 28, 2015

Red: Top on the Top

After realizing last night that the top cone race and bottom cone race are different sizes, I was worried I had put them on backwards when I did Red's steering.

Happy to report that the top cone (22mm ID) was indeed on the top.



Spare Wheel: Rust Dip

Take the old aluminum "fender" that I made in TechShop organic metal class, add some kids' modeling clay, and finish off with Evapo-Rust.  Viola.