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Dale Detrich                     Attica, OH                 djdtrh@cros.net

One Cylinder vertical with Overhead Cam,  1.0 bore X 1.0 stroke  3/8/2007

The brass engine is the same as the aluminum vari-compression engine that is in the single cylinder vertical section.....It is a 1" bore X 1" stroke, MJN ignition, electric fan cooled, timing belt driven over head cam....And the "squish" area of the engine can be adjusted from approximately. .437" down to about .045", by just a simple mechanical adjustment..........Members can view the First ( aluminum ) version of the engine and parts in the vertical single section of the

Finished engine.........

 

Fueled and ready to go, the engine was started up and running (rough) in about five minutes.........I set timing and carb , still the engine was not running good.........I found  that I had set the valve lash too tight........I had to remove the cam rack, (four screws) remove the cam followers and reduce the shims (which sets the valve lash) by .010.........This allowed the valves to seat, and the engine was running fine at this point..........The engine is running tight at this point ( as could be expected) and has two (small) oil leaks at this time......The engine is running from a good idle up to  aprox. 6000 RPM high end..........I am planning to try to get some time on the engine and then tear the engine down, and clean up the oil leaks........The engine is now rope starting at this time, so I think that it is getting close to OK

Electrical Box Details

12volt fan/ hall effect pick up conector in place.....

 
High voltage plug........Inserts into the hole and down to the MJN module..................

Ground, fan/hall effect, connector......

Engine ground is carried through the brass mounting tube .............

Left connector is for the fan and hall effect pick up....Right connector is the high voltage for the plug.....

Charging post and on/off switch

Wiring inside of the box......Using  MJN  CD ignition module


2/13/2007

 

Click here to go to the page for the work in progress for this engine built in 2006 and 2007

 

Click here to go to the page for the finished engine built in 2004

Click here to go to the page for the first work in progress from 2004 engine

 

Copyright 2006,  Florida Association of Model Engineers and engine builder as noted above, All rights reserved.