You will need two stoke model engine fuel which is methanol and oil!!! 75%methnol 25 %castor oil it will run on this but 5 % nitro will help it run better. And a good 2volt battery for the glow plug. Good luck. lol forward to the video of it running
If you remove plug and turn shaft,move its freely?
If you put plug into head and flip prop counter clockwise,did you feel resistance by compressed air and hear popping sound?
Filament in glow plug glowing if connected to baterry?
Hi ixb1 !
remove plug and turn shaft,move its freely : yes
put plug into head and flip prop counter clockwise,did you feel resistance by compressed air and hear popping sound : yes
Filament in glow plug glowing if connected to baterry : yes
I think i make the clearance between the crankshaft and the font bearing to much
Clearance of crankshaft is too much.. you need this book, see chapter two about fits and tolerances in page number 17 (part A).
The tolerance in crankshaft/bearing in front house must be very little clearance and running without friction when the engine is new. Use the adjustable reamer to adjust the diameter in the bearing and try each time until the crankshaft goes into bearing without slack.
Front house bearing - 10 mm H7 = +0,000 - +0,015 = 10,000 mm - 10,015 mm
Crank shaft - 10 mm g6 = -0,005 - -0,014 = 9,995 mm - 9,986 mm
I prefer to make crankshaft first 10,000 mm when the shaft is polished with fine emery paper #500-800 or lapping ring + lapping paste for shaft if you want (+ or - not so very important in tolerance since the lathe is never 100% precision). Measure 10 mm diameter must be same in whole length of crank shaft, use emery paper if one of the part of crank shaft is too thick (must be parallel in length). Then drill the bearing house with 9,8 mm drill and use reamer to adjust the diameter, then ream into the bearing house and try each time with crank shaft until the crank shaft fit into the bearing without slack and rotate free with oil applied on..