Dea_944t

I was under the impression that no modifications were needed on the Speed Engine crankcase?

Thanks, I had some hopes it might be better as it performed as well as the Leovinci SP.

I asssume that the Proma City Power is about the same as well?

Do you have a picture of it?

Point taken… I’ll try to find an original one in good shape or a Nuovo Mazuchelli

~40 Euros, still pretty cheap

Had a Top Racing in an engine two years ago and it broke so I’m a bit hesitant….

Haven’t been able to find any original moped cranks in good shape, but maybe I should go for a Nuovo Mazuchelli instead

Strange, I run the old-timer coils with the 991790 flywheel to the right in the bottom picture and it works fine?

The 990955 flywheel to the left does not work with the old-timer coil or the “green” coils in the bottom picture due to the larger outer wall thickness, it has to use the smaller coils in the bottom picture.

I probably have an…[Lees meer]

Update
Changed to the correct coils for the flywheel I have and now both the tube lamp, 5W/12V, and the tail lamp, 4W/12V, works fine 🙂
Still don’t understand why the head lamp that is 15W/6V survives and actually is’t that bright….

Update
The tail light lamp broke again… The problem could be that I’m using an old-timer coil with a…[Lees meer]

Ok, but I guess I can keep the headlight bulb 6V (the P26s) as that one does not break?

They are all 6V

I changed the clutch disc (to another used one, should probably get a new one) which solved 95% of the problem.
Still have more transmission sounds than I want but it hasn’t changed since the change, ~500 km

On the coils they fit with the thin walled flywheel, 21 mm wall width.
How many flywheel variants are there?

In this case it’s a metal rod that I unfortunately lost when moving to my new garage….

Has anyone got a picture of how it looks without pedal brake?

Thanks!
I used 3% during break-in the first 500 km but did have a feeling it was unnecessary to continue with.

Main point for running Alkylate is there is less carbon build-up and soot in the engine, also more or less zero smell…

Did you find any solution to the problem?

Removed the flywheel but there were no obvious issues.

[URL=http://forumbilder.se/G8LB5/moped-ignition][/URL]

I did however find some suspiciuos things:

The flywheel contact area with the cranskaft is not optimal. As can be seen on the picture below the flywheel seems to “vibrate” or “move” causing…[Lees meer]

Thanks!

Update: started and runs Ok 🙂

The piston ring-ends does not run in any ports regardless which way the piston is put in.

First I put it so that the two small holes in the piston matched the transfer ports in the cylinder, this way there is no holes in the piston matching the exhaust port, this is the way all other tuning cylinder pistons (like DR) are mounted. But then I…[Lees meer]

Finally dismantled the engine and it was excessive wear on the carter, I could easily remove the bearings without heating the carter.
Inspecting the carter it looks like it was sandblasted which probably removed to much material in the bearing seat.

Is there any description or how-to available anywhere?

Which has best low-end torque?