Author Topic: A Wallaby of my own.  (Read 203097 times)

Offline 10KPete

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Re: A Wallaby of my own.
« Reply #870 on: December 17, 2018, 02:28:23 AM »
Engine is really shaping up, Dave! It's good to hear the healing is going well. Takes a while but you'll get there.

 :ThumbsUp: :popcorn:

Pete
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Retired, finally!
SB 10K lathe, Benchmaster mill. And stuff.

Offline steamer

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Re: A Wallaby of my own.
« Reply #871 on: December 17, 2018, 02:38:46 AM »
Thanks Pete!    I think i might be paying fornit tomorrow,but thats ok.   

Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline Art K

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Re: A Wallaby of my own.
« Reply #872 on: December 17, 2018, 03:23:06 AM »
Dave,
You are making good progress. Take it easy on the knee. I was wondering about the cylinder/piston clearance. I have usually aimed for .001 and have had good success with that. My engines have been air cooled though & I don't know how much difference that makes. Great work!
Art
"The beautiful thing about learning is that no one can take it away from you" B.B. King

Offline steamer

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Re: A Wallaby of my own.
« Reply #873 on: December 17, 2018, 11:07:25 AM »
Westbury suggested .006 at the crown though that seems.excessive....this is water cooled.

Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline Roger B

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Re: A Wallaby of my own.
« Reply #874 on: December 17, 2018, 08:06:35 PM »
Looking good  :praise2:  :praise2: As I understand it the piston clearance with aluminium pistons depends on the alloy  :headscratch: I had to keep increasing the clearances on my horizontal engine due to piston pick up.
Best regards

Roger

Offline steamer

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Re: A Wallaby of my own.
« Reply #875 on: December 17, 2018, 10:40:58 PM »
Looking good  :praise2:  :praise2: As I understand it the piston clearance with aluminium pistons depends on the alloy  :headscratch: I had to keep increasing the clearances on my horizontal engine due to piston pick up.

Yes absolutely varies with alloy...but its the difference in temperature that im not sure of.   Im going to check another well thought out design that i have plans for...and ill fill ya in
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline steamer

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Re: A Wallaby of my own.
« Reply #876 on: December 17, 2018, 11:29:40 PM »
Under the heading of "Something every day"...I decked the block to height + 0.005.   I'll finish it on the Aciera....it's more accurate

Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline b.lindsey

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Re: A Wallaby of my own.
« Reply #877 on: December 18, 2018, 12:27:20 AM »
Hope the leg isn't paying too much today Dave.

Bill

Offline steamer

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Re: A Wallaby of my own.
« Reply #878 on: December 18, 2018, 01:08:32 AM »
 :zap:  leg  cramps.....in my thigh.
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline Art K

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Re: A Wallaby of my own.
« Reply #879 on: December 18, 2018, 03:17:21 AM »
Dave,
Do you have stretches & PT you're needing to do? & does it help when you stand a lot to do them. The piston for the Upshur vertical single I made to whatever the prints said with an unnamed stick of aluminum. VAL I held to a .001 using 2024.
Art
"The beautiful thing about learning is that no one can take it away from you" B.B. King

Offline 90LX_Notch

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Re: A Wallaby of my own.
« Reply #880 on: December 18, 2018, 03:29:45 AM »
Looking good Dave.

-Bob
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My Engine Videos on YouTube-
http://www.youtube.com/user/Notch90usa/videos

Offline steamer

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Re: A Wallaby of my own.
« Reply #881 on: December 18, 2018, 03:34:51 PM »
The design I was looking at had a cast iron sleeve and a cast iron piston and 3 rings.   The piston was to be 0.001" under the nore size.  I have a few more references    ill keep looking
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline Art K

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Re: A Wallaby of my own.
« Reply #882 on: December 18, 2018, 08:05:11 PM »
That sounds better .003 & .006 just sounded rather large.
Art
"The beautiful thing about learning is that no one can take it away from you" B.B. King

Offline Tennessee Whiskey

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Re: A Wallaby of my own.
« Reply #883 on: December 18, 2018, 08:25:40 PM »
Fer what itís worth from here in old Springbucket: models aside; pretty much any engine Iíve ever put together was at around .001-.0015 at the skirt of the piston. Probably wasnít the high tech way, but, we always inserted the piston in the bore backwards, without rings, and measured the clearance at the skirt with feeler gages. Of course we were just po country folks.

Eric

Offline steamer

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Re: A Wallaby of my own.
« Reply #884 on: December 18, 2018, 09:00:56 PM »
If it works its right!


Dave   
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!