- Joined
- Jan 20, 2016
- Messages
- 1,011
I've been working on making cad & cam drawings of Brian Weebly's 32x40mm engine for awhile now. I have almost all of the plans drawn in Fusion 360 and most of the milled parts CAM completed. (this is Brian's copyrighted material purchased for my personal use only - sorry) http://briansworkshop.weebly.com/
Weather I build this engine or not is still up in the air, but it has been a good project to fill in the days around my back and hip surgeries.
Anyway, I've been refining some of the parts and pieces to my taste but have gotten stuck on one thing. Maybe I've just been looking at it too long but I can't see a good way to adjust the backlash on the timing gear train. The the 2 end gears (crankshaft drive and camshaft driven) need to be fixed in place and backlash adjusted by the center (idler) gear. As you can see from these drawings space is limited on the inside of the frame and nonexistent between the gear and the frame.
click on the pictures for full size
A somewhat exploded view. The red shaft is what I want to make adjustable.
Dark dot is the idler gear axle. This could be extended up to 6mm before it hits the crankshaft web.
overall picture of engine
If built the engine is about 10" long x 5.5" wide & tall. Runs on propane.
Weather I build this engine or not is still up in the air, but it has been a good project to fill in the days around my back and hip surgeries.
Anyway, I've been refining some of the parts and pieces to my taste but have gotten stuck on one thing. Maybe I've just been looking at it too long but I can't see a good way to adjust the backlash on the timing gear train. The the 2 end gears (crankshaft drive and camshaft driven) need to be fixed in place and backlash adjusted by the center (idler) gear. As you can see from these drawings space is limited on the inside of the frame and nonexistent between the gear and the frame.
click on the pictures for full size
A somewhat exploded view. The red shaft is what I want to make adjustable.
Dark dot is the idler gear axle. This could be extended up to 6mm before it hits the crankshaft web.
overall picture of engine
If built the engine is about 10" long x 5.5" wide & tall. Runs on propane.