- Joined
- Feb 17, 2008
- Messages
- 2,330
- Reaction score
- 445
Arv,
Good to hear from you. Things good here. Vision continues to get worse all the time and really slows down building. Recovery from the stroke is progressing nicely. Some functions will never come back but overall I am doing quite well.
The compression ratio on my Tiny's (I have built several) is 5.2:1. I played with it some in the early days and found that I could not tell any difference in operation from 5.0 to 5.3.
The final version has a cast iron cylinder with a cast iron piston. They were lapped independently to 0.0002 clearance. The piston has several oil grooves 0.005 wide and deep plus a spreader groove near the bottom to bring oil toward the head from the oil cup. I only use about 1 drop of oil per hour now.
I am working on my Woolwich locomotive now . It is powered by a H-N-M Tiny. I will do a thread on it later after I finish detailing it some more. Currently disassembled for anodizing. Here is a video of it sitting at Idle waiting for the main line to be free. Idle is 3000 rpm with it hitting about every 12 revolutions.
Gail in NM
http://youtu.be/a-csJ3As7dc
[ame]http://www.youtube.com/watch?v=a-csJ3As7dc&feature=share&list=UUC8RZePnFk5KLNYzDoXI0lw[/ame]
Good to hear from you. Things good here. Vision continues to get worse all the time and really slows down building. Recovery from the stroke is progressing nicely. Some functions will never come back but overall I am doing quite well.
The compression ratio on my Tiny's (I have built several) is 5.2:1. I played with it some in the early days and found that I could not tell any difference in operation from 5.0 to 5.3.
The final version has a cast iron cylinder with a cast iron piston. They were lapped independently to 0.0002 clearance. The piston has several oil grooves 0.005 wide and deep plus a spreader groove near the bottom to bring oil toward the head from the oil cup. I only use about 1 drop of oil per hour now.
I am working on my Woolwich locomotive now . It is powered by a H-N-M Tiny. I will do a thread on it later after I finish detailing it some more. Currently disassembled for anodizing. Here is a video of it sitting at Idle waiting for the main line to be free. Idle is 3000 rpm with it hitting about every 12 revolutions.
Gail in NM
http://youtu.be/a-csJ3As7dc
[ame]http://www.youtube.com/watch?v=a-csJ3As7dc&feature=share&list=UUC8RZePnFk5KLNYzDoXI0lw[/ame]
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