Maryak 10

[steamer]

OT, but,,,,related
I have had absess's and I can think of no worse pain...including broken bones as I have had that too!

hang tough and take the meds!.....I understand all too well!

We'll wait patiently for your safe return......

Dave

 

[Maryak]

Dave,

I'm very glad one of us has patience. I am chomping at the bit after only one day.

Thanks for your support.

Best Regards
Bob

 

[gjn]

Unfortunate turn of phrase there Bob. Hope all goes well in the fang department, eargerly waiting for the next instalment.

 

[GailInNM]

Bob,
Sorry about the discomfort and the forced slowdown.

I have found that under circumstances when I can't work in the shop, it's a good time to grab a little bit of abrasive paper and work out some of the tooling marks and things like that. There are lots of things that you can do with out venturing near sharp things that cut. And if the meds are not making you too fuzzy headed there is always the sketch pad to plan a little bit on the next project. Keeping the mind active makes me forget about the current circumstances.

Hope yo get back to things soon.

Gail in NM,USA

 

[Maryak]

Thanks for the support guys

I am chomping at the bit after only one day.

Unfortunate turn of phrase there Bob.

Not a good choice in my current condition and I was blissfully unaware of my Faux pas.

Best Regards
Bob

 

[steamer]

That's OK Bob....I knew what you meant....got a good chuckel too! ;D

Seriously...How's it feeling?

Dave

 

[rake60]

Hope the jaws recover quickly Bob!

Did you hit the dentist up for a few of those tiny carbide burrs?
He can't reuse them so they are thrown away.
Every situation brings opportunity to sick minded home machinist.


Rick

 

[Philjoe5]

To a speedy recovery Bob. I'm missing the progress reports.

Cheers,
Phil

 

[Maryak]

Thanks Dave, Rick and Phil,

I am feeling pretty good today and no post extraction drama. Shop time tomorrow

Did you hit the dentist up for a few of those tiny carbide burrs?
He can't reuse them so they are thrown away.
Every situation brings opportunity to sick minded home machinist.

Rick,

Funny you should ask that

Here's my score.

Best Regards
Bob

 

[rake60]

Now THAT'S one of the best dental visit scores I've ever seen!
Helps to numb the pain a little bit doesn't it? ;D

Rick

 

[Maryak]

New week and back in the shop.

Rick I was pretty happy with my haul from the dentist. Actually She is a very nice lady. ;D

On with the show and tell.

To ease into the restart 1st I tapped the crankcase for the head bolts.

Well at least something went OK the cylinder and crankcase line up.

Whittling down some cast iron for the piston from a foundry sprue.

The piston roughed out and ready fro the 3 jaw.

While the 4 jaw was in the lathe, made a start on the cylinder lap.

The completed lap. I know it's steel but needs must - I didn't have a piece of copper or cast iron big enough.

Lapping the cylinder - A long boring and dirty job but very necessary.

That's it for today.

 

[kustomkb]

Back with a bang, and looking good! ;D

How bout a vid of the cylinder lapping?

Thanks for the play by plays,

 

[steamer]

Looking great Bob!

Nice looking engine...is it going in a plane?

Dave

 

[Philjoe5]

Great progress report Bob. Do those grooves in the lap hold the lapping compound?

Cheers,
Phil

 

[Maryak]

Kevin, Dave and Phil,

Thanks again guys. :bow:

Kevin - I will try and make a short video this morning re Lapping.

Dave - It's pretty heavy I think a boat may be a better option.

Phil - Yes the grooves are for compound retention.

Best Regards
Bob

 

[Metal Mickey]

Hello Bob, what lapping compound are you using? Diamond paste or something else? MM

 

[Maryak]

Mike,

I don't use diamond paste, mainly because I can't afford it. :

I go to a DIY auto shop and buy valve lapping paste, medium and fine.

1. Use medium to remove machining marks, scoring etc. to taste. - I was amazed with this cylinder how much the milling and drilling of the ports reduced the diameter in this area and gave rise to small slivers of metal where the drill angles out into the cylinder. These are prone to pick up and one has left a small score which I am lapping out.

2. Next is the fine to start the real smoothing.

3. This is followed by dremel paste which is similar in strength to Bon-Ami or Ajax or Vim all of which are OK. and are favoured by a lot of bush mechanics.

4. Last is our old mate Brasso.

The piston will be treated in the same way and the final fit will be metal to metal with tallow.

Best Regards
Bob

 

[90LX_Notch]

Bob,

This is such a great thread. I have learned so much from following it. Thank you.

regards,
Bob

 

[Maryak]

Bob,

This is such a great thread. I have learned so much from following it. Thank you.

regards,
Bob

Thanks Bob,

I really enjoy “A Work In Progress.”

For mine, you get so much more out of it than your input. In fact that could be said for the whole forum.

So many members give their support, encouragement and advice. It’s almost impossible to fail in your endeavour in such surroundings. You may be on your own in your shop but you are not on your own here.

The questions asked prompt one to really think, “Now why did I do that and why did I do it that way?” when trying to answer them.

I am absolutely sure that I learn far more from those who contribute than they learn from me.

If some of my efforts contribute to others success and/or enjoyment then that is an added bonus.

Best Regards
Another Bob

 

[NickG]

Bob,

The engine is looking fantastic and your posts are inspiring. I need inspiration, I've got too many projects whirring around in my had and just need to get one done to tick it off the list!

Nick