Autisa kitted Sachs

[Smitty]

This is the one I'm building now...

;^)

[Smitty]

...the case halves...

[steamboat]

Great pictures Smitty. What type camera do you have? Jim.

[xrongor]

am i seeing it right? the head and the cylinder are all one piece it looks like?

randy

[Smitty]

[bryanofmyrons]

[jtaylor78]

[Smitty]

That's a really nice looking "kit"!!!
Sweet bike as well !!!
To answer your question, yes, I can build Sachs engines as well ;^)
The first Moped I ever owned was a Sachs.
I'll be in touch.

[Smitty]

[Glasseye]

It must be a huge pain to scrape carbon out of those one-piece jugs.

[steamboat]

That bike is a show piece. Where was it stored all these years? Great find. Jim.

[Smitty]

...Ah-Ha ... I finally got the crank bearings removed, and that was no easy task, at all !!!
Now to give the crankshaft a good chill in the freezer over night, then new freshly warm baked bearings in the morning with my coffee, and this baby begins going back together !!!
I hope to have this one installed and running this weekend, or beginning of next week.
I still have an issue of carb with this engine, as I'm not sure as to whether or not the Mic carb is going to fit...without much of a headache anyway ;^)
The little dinky 10mm stock carb will not feed this engine enough fuel, and it is not borable either. Rest assured though, there is a little mad moped scientist at work here, so this puppy is going to hunt, hehehe ;^)

[Smitty]

...hehe...one of my most favorite parts of Moped engine building is installing the new crank bearings.

Smitty's recipe for successful, easy crank bearing installing...(lol)...
*Gloves, oven mits, and shop towels highly recommended, as you are about to handle extreme temps, with your hands !!!
1) Be sure to note and study the location of all bearings, shims, seals, spacers, etc. from one end of the crankshaft to the other end !!!
2) After removing the old bearings, seals, etc., clean crankshaft, and lightly wipe it down with oil. Freeze crankshaft over night.
3) Next Day: Leaving crankshaft in freezer, preheat oven to 220 degrees (f), and place new bearings in oven for aproximately one hour.
4) Remove crankshaft from freezer, remove bearing from oven.
5) Refering back to notes (mental or otherwise), place slide-on pieces in order they go on, and install. The heated bearing should fall right into place on the frozen crank shaft. Immediately check for proper tolerence, clearance, and location of bearings! Once you have it all in place, let stand at room temp for about an hour.
6) At this point, the bearings should be a nice tight "pressed-on" fit.
7) Continue with engine assembly ;^)

...one of these days I'll publish an on-line book of my work, hehe
;^)

[alrob]

Yes, that freezer-and-oven trick works well. I first came up with that by myself last May when I pulled my E50 apart:

http://www.mopedriders.org/viewtopic.ph ... highlight=

No risk of bending anything by pounding the bearings on.

Al

[Smitty]