Author Topic: A Wallaby of my own.  (Read 202189 times)

Offline steamer

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Re: A Wallaby of my own.
« Reply #855 on: December 12, 2018, 12:40:38 AM »
Embryonic pistons with chucking stubbs.   I've put the wrist pin hole in, now to machine the pocket for the connecting rod.

Getting there.

An hour at a time....at least the time span in the shop is increasing!.....Every time it gets a bit stronger, I can feel all wires....they don't hurt, but it kinda feels like i've stretched a net over the muscles and tendons...then that sensation goes away, and the progress levels out till the next jump.....wierd...

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

Online b.lindsey

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Re: A Wallaby of my own.
« Reply #856 on: December 12, 2018, 12:57:49 AM »
It's still some nice progress Dave. They are looking good too!

Bill

Offline steamer

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Re: A Wallaby of my own.
« Reply #857 on: December 12, 2018, 01:15:34 AM »
Yeah I was standing for about an hour for those parts, so i'm a bit tired currently, but that's how it gets stronger right?

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

Online b.lindsey

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Re: A Wallaby of my own.
« Reply #858 on: December 12, 2018, 01:35:29 AM »
Well a few months ago, even that wouldn't have been possible, so you've come a long way !!

Bill

Offline steamer

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Re: A Wallaby of my own.
« Reply #859 on: December 16, 2018, 12:02:55 AM »
 A little more done today

finished out the inside of the pistons, they are about .030 over currently. Next, seat the cylinder sleeves home in the block, and machine to deck height. Currently about 0.020" over size. Then make a lap and finish the ID of the cylinder liners to finish size, and then measure the finished bore. Then machine the pistons to final size and make and size some piston rings Bore is nominally 1.00".
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline Dave Otto

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Re: A Wallaby of my own.
« Reply #860 on: December 16, 2018, 05:50:45 PM »
Looks good Dave!

Dave

Online Vixen

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Re: A Wallaby of my own.
« Reply #861 on: December 16, 2018, 05:58:30 PM »
Nice.

What piston clearance will you aim for?

Mike
It is the journey that matters, not the destination

Offline steamer

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Re: A Wallaby of my own.
« Reply #862 on: December 16, 2018, 10:02:33 PM »
Nice.

What piston clearance will you aim for?

Mike

0.003" at the skirt, and 0.006" at the crown.    With Aluminum pistons

I got the liners in today, ans well as a repair on the block.   The Tappet guides go in with a 3/8-40 thread.   The Aluminum in the block is  pretty soft, and it picked up while tapping and damaged the threads.   To fix this, I reamed the holes out, and made up some 3/8 OD x 5/16-40 ID sleeves out of 6061-T6, and pressed them home, and then re threaded the tappet guides to 5/16-40   That all worked a treat!...    I have the block stripped down, so I'll finish the final machining of everything while it's stripped including deck height, water pump mount, oil passages, and water passages.   and the head bolts and water passages and the dip stick, and give it a good cleaning and a good rub down and some primer.     Hmmmmm what color...I'm thinking British green.


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

Online b.lindsey

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Re: A Wallaby of my own.
« Reply #863 on: December 16, 2018, 10:09:47 PM »
What no pictures Dave? Zee's gonna be all over that  :Lol:

Bill

Offline steamer

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Re: A Wallaby of my own.
« Reply #864 on: December 16, 2018, 10:20:59 PM »
Give me a minute...my daughter is in physics homework melt down........ :zap: :'( ::)
"Mister M'Andrew, don't you think steam spoils romance at sea?"
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Online b.lindsey

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Re: A Wallaby of my own.
« Reply #865 on: December 16, 2018, 10:32:10 PM »
Got it...homework is more important!!

Bill

Offline steamer

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Re: A Wallaby of my own.
« Reply #866 on: December 16, 2018, 10:53:38 PM »
Here we go...current state of play...I have about 0.05 to take off the deck...or so.

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

Online b.lindsey

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Re: A Wallaby of my own.
« Reply #867 on: December 17, 2018, 12:00:53 AM »
That is looking great Dave and the repair tapoet guide may even be better than the original plans called for. Nice!!

Bill

Offline Don1966

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Re: A Wallaby of my own.
« Reply #868 on: December 17, 2018, 01:32:26 AM »
Good to see you making great progress buddy!    :ThumbsUp:


 :cheers:
Don

Offline steamer

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Re: A Wallaby of my own.
« Reply #869 on: December 17, 2018, 01:53:44 AM »
Good to see you making great progress buddy!    :ThumbsUp:


 :cheers:
Don

Thanks Don!     Feels good too!

I was able to crank out most of the cylinder lap tonight as well, time to put it up for the night.

Dave

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