Maryak 10

[Maryak]

A little cooler today, but was beaten by other work. However cylinder No2. is ready for lapping

Managed to get all the holes drilled without deflections and disasters.

The drilling jig fitted to the cylinder.

Drilling the head/cylinder bolt holes.

The cylinder ready for lapping.

Next will be the bearing bushes.

 

[jack404]

Good onya Bob,

glad its worked this time

glad its coolin down some for you too

cheers

jack

 

[seagar]

Hi Bob,as an old aeromodeler I am really enjoying this build.Thanks again for shareing it'
:bow: Ian

 

[steamer]

Over the hump Bob!..... :bow:

Dave

 

[Maryak]

Jack, Seagar & Dave,

Thanks for your continued support. :bow:

The extra clearance in the grooves seemed to do the trick. This plus a couple of long series drills and it went like a charm.

Yep a bit cooler here today only 33C and a cool night last night (25C) so we could sleep with the windows open and without the A/C.

Supposed to hit 40C by the weekend but a cool change on Sunday down to 25C.

Best Regards
Bob

 

[Maryak]

Rather than what went down today - It was more a case of what came down today at 0800. Progress Zilch.

Lets hope it's fixed by tomorrow.

 

[kustomkb]

Great come back. ;D

Too bad about the rookie driver though :-[

Great progress, Keep it up.

-Kevin.

 

[Philjoe5]

Congratulations on your successful completion of this troublesome step Bob. Makes you feel good though right? You know you've completed something :bow: Stay cool and send some of that energy our way - it's snowing to beat the band tonight here in Pennsylvania.

Cheers,
Phil

 

[Maryak]

Kevin and Phil,

Thanks for the support and words of encouragement. Your right I do feel good that the cylinder is behind me. : Still kicking myself for not spotting the problem when I was drawing it up.

I admire those guys and/or gals who can make an engine without plans, :bow: for me it's P@#s Poor Planning results in P@#s Poor Performance, as I have just demonstrated. :-[ :-\

Best Regards
Bob

 

[steamer]

Hi Bob,
Sorry to hear about the power situation...That is frustrating!
Some off us over here recently know all too well! :

I agree, I wish I could just wing it and build it and all is well....not this guy!....it all just turns to chips when I try that.

Dave

 

[Maryak]

Thanks Dave, for your sympathy re power.

We have had several outages due to system overload and interconnector failures this summer. Lucky for us that non have occurred at home and Galina has managed to stay cool. Roll on Autumn, (Fall), and looking at the news, Spring for you guys North of the Equator.

Best Regards
Bob

 

[Maryak]

Powers on - Temperature tolerable - no more excuses so on with the build.

Today I managed to make, fit and ream the bearing bushes in the crankcase.

Some bronze I found for the bushes.

The first bush ready for parting off - spot the tapered lead in ???

The two bushes ready to be pressed into the crankcase.

Pressing the back bush.

And the front bush.

Reaming the bushes to 7/16"

After that lot I was completely bushed.

 

[steamer]

Now that was a productive session....
glad it cooled a bit.


Dave

 

[NickG]

You'll be thinking you're Ray Mears soon with all this bush-craft :big:

 

[Philjoe5]

Bob,
Great progress. Could you estimate the degree of taper you made?
Cheers,
Phil

 

[Maryak]

Dave, Nick & Phil,

Thanks guys :bow:

I put the taper on with a smooth file until the bush entered the hole about 1/8". At a guess 3-5 degrees.

Best Regards
Bob

 

[Maryak]

New COOLER week,

Made a start on the crankshaft.

Roughing out the crankshaft.

Roughed out and ready for finish turning.

The start of the finishing cuts.

And that was it apart from much swarf removal

 

[T70MkIII]

Bob, you sure do love mowing down a good sized piece of Al!

Great looking work, as always.

 

[steamer]

That crank is coming along and you had a lot of pratice making "6's and 9's" ;D
Dave

 

[deere_x475guy]

Bob, you sure do love mowing down a good sized piece of Al!

Great looking work, as always.

hehe, take a second look....I don't this it's Al. ;D