Maryak 10

[Maryak]

rleete,

Thank you for your kind words and support. :bow:

Best Regards
Bob

 

[stevehuckss396]

Will this be a glow plug type engine or the type with the screw in the head.

The screw type, is that a diesel?

Is there a future plane or boat or do you just build them to run on a stand like me.


Sorry if this has already been covered.

 

[cfellows]

This is going to be quite a thumper (I know, that term is usually reserved for 4 strokes), but with that stroke (and bore) you'll have to tie 'er down pretty good to keep it from jumping all over the place!

Chuck

 

[Maryak]

Steve,

It will be a diesel type. At this stage I am just building engines and enjoying the process of getting them to run.

Chuck,

How right you are, I am anticipating a fair degree of jumping about. I intend for it not to chase me around the yard. :

Thanks guys for your support and interest. :bow: :bow:

Best Regards
bob

 

[steamer]

Looking great Bob.

Can't wait to see more!

Dave

 

[Maryak]

Dave and the rest of the support team,

Sorry about the delay but the fang farrier got stuck in yesterday so I rested my aching jaw, ( lucky I am not SWMDBO :)

Today's effort was the crankcase cover plate.

Aluminium chucked for the cover plate

The inside of the plate completed.

Test fit of the crankcase and cover plate.

Forming the outside flange.

The outside of the cover plate counter bored.

Setup for drilling the cover plate and crankcase.

The finished crankcase end cover plate.

Have a good day.

 

[tel]

How right you are, I am anticipating a fair degree of jumping about. I intend for it not to chase me around the yard. :

Best Regards
bob

;D Had that happen with a full sized Sundial 1.5hp a few years back - exciting stuff!

 

[steamer]

Looking Good. ;DI trust the shop has cooled down some? 8)

Dave

 

[Maryak]

;D Had that happen with a full sized Sundial 1.5hp a few years back - exciting stuff!

Tel,

My worst was one of those ratchet crank handles on a Lister which refused to disengage when the engine started. Not a lot of room to get out of the way in a warboat engine room. When it did let go it was amazing how my things it hit and how many different directions it travelled before coming to a well deserved stop. The fuel shut off was adjacent to it and the emergency shut off was on the other side from where I was trying to disappear into the deck plates. Nough Said

Dave,

Yes thanks it's hovering between 15C and 25C very pleasant.

Thanks to both of you for your continued support. :bow: :bow:

I am 90% sure I will be off to Kalgoolie WA tomorrow, there is an urgent job on a couple of tanks at a mine site, one with Sodium Hydrosulphide and another with Conc Sulphuric Acid. Both are decidedly unpleasant to deal with and I will be glad when it's over. ;D :

Best Regards
Bob

 

[Philjoe5]

Thanks for the progress report and pictures Bob. Entertaining AND educational - that's a good combo :bow:

Cheers,
Phil

 

[Maryak]

Phil,

I'm glad you find it entertaining. ;D

Today's paltry effort, (getting ready for my trip in the morning).

Tapping the crankcase for the cover plate studs.

Th end cover plate fitted to the crankcase.

Spent quite some time on an aluminium removal exercise from under the benches and machines.

Best Regards
Bob

 

[flick5848]

This is superb stuff keep it coming. :bow:

 

[Philjoe5]

Great stuff Bob. :bow: :bow: That crankcase cover extends quite a bit into the crankcase. Why wouldn't you just use a flat plate with a small recess? Are you minimizing dead space in the crankcase with your design?

Cheers,
Phil

 

[kvom]

I have the same question. I will need some sort of cover for the crankcase on my CO2 engine. Dave Kerzel shows one on his build page, but not on the plan. I was thinking that it might be interesting to have a lexan or polycarbonate transparent cover so expose the operation of the crank and rods. For now I will likely just have an aluminum cover similar to Bob's.

 

[rklopp]

On a 2-cycle engine like the Maryak10, the crankcase is the scavenging pump. It performs best when it has the least dead space. Hence the deeply dished end cover. I made a Little Dragon and over-cut the crankcase interior volume when slotting for the con-rod clearance. Performance was definitely affected.

 

[Maryak]

On a 2-cycle engine like the Maryak10, the crankcase is the scavenging pump. It performs best when it has the least dead space. Hence the deeply dished end cover.

Phil & kvom,

The above explains it very nicely.

Thanks to all 3 of you for your interest and support. :bow: :bow: :bow:

See Ya next week after Kalgoolie.

Best Regards
Bob

 

[tel]

Just don't get caught up in Hay Street!

 

[Maryak]

Just don't get caught up in Hay Street!

Hi All,

I'm back - stayed away from Hay street - mind you there was one on the plane going back to Perth yesterday and were I 40 years younger and single.........

The job went well - I condemned the Sodium Hydrosulphide tank and that made everybody happy - They have been unsuccessfully trying to get money for a new one for a year or so. This tank had corroded from 16mm down to 5mm, (5/8" down to 7/32").

Tomorrow should see M10 again.

Best Regards
Bob

 

[Paolo]

Really nice work...!!!
Cheers
Paolo

 

[Maryak]

Paolo,

Thanks for your continued support and interest, :bow:

Lack of Progress report - don't quite know but I have done my back in. Can't sit, can't stand, can't lay down any and all for any length of time. I am currently a fully paid up member of "Grumpy Old Men." : :

Best Regards
Bob