another carb finished

last bits came in so I could finish this one too, now ready for the next race in Veenendaal.

Carburetor move

The PC20 powerjet carburetor has moved from my racebike to my streetbike.
Wanted a little more power in modern day traffic and this pretty much does the trick although a quarter turn throttle would be nice, but not so correct for this bike.
Mounted with new S65 rubber and springs and for some reason, on this bike the manifold didn't line up, so I put a small isolator between the head and manifold to get the correct height.
Needs a little more adjustment, But I like it, more power, but with original mounting, just as if it could have been a CYB upgrade back in the day.

engine stands

When working on engines, I used to use some wooden beams, but they always slid away.
then in the new workshop, I made an engine stand from some leftover bits of hardwood, and this worked so well for me, that I wanted some more, as I get more engines to work on at the same time now.

Today I made three more engine stands, with some slight differences, hardwood, so they don't damage what you're working on, but sturdy enough to be able to use an impact driver, and high enough to put a small oil catch can under it for draining engines.

In the picture demonstrated with some C110 engines and a (customer's) S90 engine

another Carb

Okay, I've decided against the dellorto for now, didn't really like the non-japanese looks on my mostly japanese bike.

So I've found myself another 20mm powerjet carburettor to adapt to my c110 racebike.
Started making some flanges, using an intake rubber I had laying around.


Bit more modern then the S65 rubber on the other setup, but that is moving over to my C110 streetbike to be a period correct upgrade over the original 16mm carburettor. Just because I use it daily if possible and in modern traffic, every bit of power is welcome. The 16mm with all bits belonging to it will be stored so the bike could be brought back to original when wanted.

Am I asking for trouble?

While I am normally so strict on putting keihins on 4stroke Hondas, I found something funny and wanted to give it a try.
If it works it would be period correct and being a downdraft like this, it would look cool, especially if I could find or make an alloy funnel. But on the other hand, something italian, known to give trouble.... maybe I should think of a keihin back up plan.

S90 trial bike finished

The last parts for the engine rebuild came back, so I could finish the S90 Trial bike for Arie.
He has now started his own blog about the bike, find out everything about the build here:

https://s90hondatrial.wordpress.com



My contribution exists of an engine overhaul with some custom modifications, bringing it up to 113cc within the original cylinder, custom weighted flywheel for trial use. Custom built cables all round, some rear brake modifications and few other little details.

gearbox work

The SS50 racebike, a project that has been in a corner for a long time, is now getting a new chance.
The rules for 4-strokes have changed, allowing them to be 85cc in the 50cc class, and as my CB50 was sold, I need something new if I want to ride in the 50cc class again.
Well the SS50 racebike had an almost complete 85cc race engine made for it, so that would be a good start.

Just needed some gearbox work, as the first gear was too short for the rest of the custom made close ratio 4-speed gearbox.
It is put together from SS50, S65, Z50 and other parts and now getting a taller first gear consisting of a chaly gear grafted onto a chinese shaft.



seen in this picture, from top to bottom
- Takegawa 5-speed 14/33 first gear
- Custom made chaly / chinese 14/32 first gear
- Cut off chaly 2-speed gearbox shaft
- chinese 11t shaft for bearing type engine casings (of no use in my old SS50 cases)

New project

Traded some work and parts for some other parts, and now I have another C110 project, going to be another race bike
(So I might sell the other one)

freshly built SS50 engine

Just finished myself another engine. classic looks on the outside, but with power inside.

looks like a very early 5speed ss50 engine


extra mounting point in front on the cases and no engine numbers




Made this way with modified S65 cases, fitted with 52mm stroker crank, 52mm cylinder making 110cc, with a ported CL70 head, fast camshaft, 2 plate alloy clutch coupled to a modified original Honda 5speed gearbox and many more modifications and rare 60's parts such as the engine covers and breather kit.

made some more parts

made some more parts, going to other people, not for myself this time.
Including the new lower linkage CR/RC shifter.



and just when I was finished, the crucible broke.....some investment needed there.....