Locks

While the frame is away at the welders I decided to do a small job and investigate the seat and fuel tank locks. The helmet seat lock doesnt have a key and is busted, Im not sure if I bother getting a replacement, the seat latch on both sides work which is good enough for now.

And also the tank lock is fully operational but needs a tidy, I might consider a pattern replacement.

Frame Welding

Today I dropped the frame off at the welders to have the rear engine and shock mountings welded. Also there was a hairline crack on the front section of of the frame where one of the tension bars would mount for the native YPVS engine, this will be repaired. Images below show where I have started grinding away at the crack to get a flush weld.

Rear Engine Brackets

This is something I have been looking to do since I finished all the
other engine mounts. The top rear bracket and spacer was too wide
so I cut the welded nuts off the existing mounting point and
placed the right side bracket on the left side of the mounting point,
also shortening the aluminium spacer.

Moving to the lower mounts which I was going to leave off, But I read
somewhere online that these engines want to twist while running so
I have had in mind to get these lower mounts sorted. I made the brackets
but need to have them welded to the frame.

Carb Clean

I invested recently in an ultrasonic cleaner and proper solution to clean the grubby carbs.
I had previously purchased new parts from Yambits to complete the rebuild, New jets,
needles, choke, seals and screws.

So after a good going over with a dremil and stainless steel brush I removed the old paint
and oxidisation and then gave them a good cleaning in the UC.

Next up I need to make a list of what parts I need to complete the job and what tasks I need
to do on the bike to finish.

Pistons

I managed to source 2 identical branded pistons
as a kit, with rings, Clips and Gudgeon Pins.

I couldnt find any info regarding the "Made in Taiwan"
Speed brand.

The tolerances work out pretty good and are as follows:
Cylinder oversize measurement: 0.035 - 0.040 = 0.035
Piston Ring end gap: 0.25 - 0.40 = 0.30
These are approximate measurements with feeler gauges.

Shafted

Another engine component rebuild, the crank was in a terrible
state as can be seen from the pics. I managed to get this shipped
to the U.K rebuilt and sent back to me cheaper than I could buy
the parts and have it done here in Ireland.

So the crank was cleaned and fitted with new main bearings x 4,
Labyrinth Seal, big and small end bearings and new con rods
and then balanced.

Bling

So its been a while and the project has been limping along.
I have been concentrating on 2 big spends: Crank re-build
and sorting out the engine casings, heads and barrels.
The images below show the parts Vapour Blasted by
http://www.vapourblast.ie/. All parts were stripped to the
original metal finish.