Belt Drive reduction unit
Belt Drive reduction unit
Hi All
My latest project for friend, He flies 1/4 scale model aircraft and needed a reduction unit to drive a 30" prop., The engine is 62 cc .
Here's the results.
Ivy McNeil
My latest project for friend, He flies 1/4 scale model aircraft and needed a reduction unit to drive a 30" prop., The engine is 62 cc .
Here's the results.
Ivy McNeil
Ret. Machinist/Toolmaker
I did not fail, I just found 10,000 ways that wont work.
I did not fail, I just found 10,000 ways that wont work.
Hi Harold
It is going to power a WW1 Fokker tri wing, it has a wing span of 105".
Yes I machined the pulleys, I ground a form tool on a hss lathe bit and mounted it in a fly cutter.
I made an indexing fixture useing a shot pin for locating, and various other fixture's for the lathe so I cuuld make more as needed.
Ivy
It is going to power a WW1 Fokker tri wing, it has a wing span of 105".
Yes I machined the pulleys, I ground a form tool on a hss lathe bit and mounted it in a fly cutter.
I made an indexing fixture useing a shot pin for locating, and various other fixture's for the lathe so I cuuld make more as needed.
Ivy
Ret. Machinist/Toolmaker
I did not fail, I just found 10,000 ways that wont work.
I did not fail, I just found 10,000 ways that wont work.
Excellent! I recently made a pair of pulleys similar to those, using the same technique. My only problem was trusting a vernier pin type indexing fixture (import) that didn't index uniformly, so the teeth on mine had to be made somewhat narrower to compensate for the irregular pitch. Worked great in the end, however, and with the load in one direction only, the added clearance isn't a problem.
If possible, could you post a picture of the Fokker? Sounds real interesting.
Harold
If possible, could you post a picture of the Fokker? Sounds real interesting.
Harold
Very nice fixture. It displays features I'd expect from one with considerable experience.
You appear to be quite comfortable with grinding HSS tools. I've said right along that unless you can do so, you're held captive by your lack of ability. My impression is that you've done a job in keeping with the best of the pro's. You can be justly proud!
Sure would be nice if others would share their projects----it's quite inspirational to see what can be done.
Thanks, Ivy.
Harold
You appear to be quite comfortable with grinding HSS tools. I've said right along that unless you can do so, you're held captive by your lack of ability. My impression is that you've done a job in keeping with the best of the pro's. You can be justly proud!
Sure would be nice if others would share their projects----it's quite inspirational to see what can be done.
Thanks, Ivy.
Harold
Hi Harold
I am a ret. Machinist/Toolmaker/Moldmaker/Tool and cutter grinder and floor sweeper.
I started in the shops in 1959 and retired in 2002, I thought it would never end "LOL".
23 years were spent in the Aerospace Indus.
I started building I.C. engines in 1975 and built several engines over the years, latest project is the Forrest Edwards 5.
Just a little Personal history
Ivy McNeil
I am a ret. Machinist/Toolmaker/Moldmaker/Tool and cutter grinder and floor sweeper.
I started in the shops in 1959 and retired in 2002, I thought it would never end "LOL".
23 years were spent in the Aerospace Indus.
I started building I.C. engines in 1975 and built several engines over the years, latest project is the Forrest Edwards 5.
Just a little Personal history
Ivy McNeil
Ret. Machinist/Toolmaker
I did not fail, I just found 10,000 ways that wont work.
I did not fail, I just found 10,000 ways that wont work.
Chuckle!
I should have known! The quality appeared to be superb. Now I'm sure it is!
Like you, I thought my time would never end. I insured it would by closing the doors on my shop after being in the trade for 26 years. To be quite honest, I still don't much like running the machines, but I'd be lost without them.
Sure would be nice to see some pics of those models, Ivy. If it's not too inconvenient, please post a few. I'm sure I speak for the masses when I say we'd really enjoy seeing them.
By the way, I'm green with envy. I became a machinist so I could build models. The old adage that the shoe makers kids go barefoot sure holds true with me. I was so busy making a living that it never happened. I have great plans for the future, though!
Harold
I should have known! The quality appeared to be superb. Now I'm sure it is!
Like you, I thought my time would never end. I insured it would by closing the doors on my shop after being in the trade for 26 years. To be quite honest, I still don't much like running the machines, but I'd be lost without them.
Sure would be nice to see some pics of those models, Ivy. If it's not too inconvenient, please post a few. I'm sure I speak for the masses when I say we'd really enjoy seeing them.
By the way, I'm green with envy. I became a machinist so I could build models. The old adage that the shoe makers kids go barefoot sure holds true with me. I was so busy making a living that it never happened. I have great plans for the future, though!
Harold
Here's some pics.
The twin is a 40cc, it was the first engine I designed and built the other one is also 40cc .
I had a fire several years ago from an unattened trash fire and burned down my storage barn and lost all os my engines, model boats,car,radio control.
These engines were in the house and were saved, now that Im retired and have the time I've started building again.
The Edwards 5 has been very time consuming I hope to get back on it soon.
Ivy
The twin is a 40cc, it was the first engine I designed and built the other one is also 40cc .
I had a fire several years ago from an unattened trash fire and burned down my storage barn and lost all os my engines, model boats,car,radio control.
These engines were in the house and were saved, now that Im retired and have the time I've started building again.
The Edwards 5 has been very time consuming I hope to get back on it soon.
Ivy
Ret. Machinist/Toolmaker
I did not fail, I just found 10,000 ways that wont work.
I did not fail, I just found 10,000 ways that wont work.
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- Posts: 23
- Joined: Thu Jun 16, 2005 3:21 pm
- Location: Eaton Rapids MI