Westlake Publishing Forums

General Category => Modellers At Work => Topic started by: michael mott on October 09, 2015, 02:43:05 PM



Title: 2 cylinder engine for a model boat
Post by: michael mott on October 09, 2015, 02:43:05 PM
The comment in Barney's thread about the band clamp reminded me of my own work with a working band clamp on this gearbox. the scale is 1:8 the model launch will be approx 28 inches long my hope is to have the engine fully functional



https://vimeo.com/114459975 (https://vimeo.com/114459975)

the gearbox uses a clamp to operate the forward and reverse for the prop.

https://vimeo.com/114630316 (https://vimeo.com/114630316)

https://vimeo.com/115835685 (https://vimeo.com/115835685)



This is just another of those projects that seem to take forever to complete and so I distract myself with other projects to keep busy.

Michael


Title: Re: 2 cylinder engine for a model boat
Post by: Ray Dunakin on October 09, 2015, 06:09:51 PM
Very cool!


Title: Re: 2 cylinder engine for a model boat
Post by: lab-dad on October 10, 2015, 04:27:59 PM
OH MY GOD!
That is stunningly beautiful and simple and complex - all at the same time!
-Marty


Title: Re: 2 cylinder engine for a model boat
Post by: Allan G on October 10, 2015, 04:44:00 PM
WOW!!!!!!!!!!!!!!!!!!!!! Allan


Title: Re: 2 cylinder engine for a model boat
Post by: Chuck Doan on October 11, 2015, 08:11:51 PM
More insanely gorgeous fabrication.


Title: Re: 2 cylinder engine for a model boat
Post by: finescalerr on October 12, 2015, 12:56:14 AM
Looks like it runs by bugle power. The construction is rather satisfactory. -- Russ


Title: Re: 2 cylinder engine for a model boat
Post by: Hydrostat on October 12, 2015, 03:52:41 AM
Michael,

so this is your knitting, uh? Absolutely stunning craftmanship.

Cheers,
Volker


Title: Re: 2 cylinder engine for a model boat
Post by: Bill Gill on October 12, 2015, 06:04:57 AM
ooow ooow, can you make a video when you run it?


Title: Re: 2 cylinder engine for a model boat
Post by: Barney on October 12, 2015, 11:37:36 AM
Very nice How do these "Brass people "do it
Barney


Title: Re: 2 cylinder engine for a model boat
Post by: Seattle Dave on October 12, 2015, 02:46:56 PM
OK - I've decided that I may as well set all my tools out for the trash pickup and take up basket weaving!  OMG, what fantastic work!

Dave


Title: Re: 2 cylinder engine for a model boat
Post by: Allan G on October 12, 2015, 04:26:21 PM
OMG!!!!!  OMG!!!! Absolutely incredible! Allan


Title: Re: 2 cylinder engine for a model boat
Post by: Ray Dunakin on October 12, 2015, 08:53:56 PM
Ditto that OMG!!

Is this a gas engine, diesel, or steam?



Title: Re: 2 cylinder engine for a model boat
Post by: finescalerr on October 13, 2015, 01:08:18 AM
Okay, you can stop the charade; your mom helped you, didn't she?

Now to be serious for a moment: All your photos are links from Photobucket. You do realize, I hope, that inevitably they will disappear from this website because something will change at Photobucket. I have asked a million times that we upload our photos to THIS forum regardless of wherever else they may be. Countless threads about superb models already have become useless because the image links expired.

What is the point of my spending money month after month to maintain this forum if its contents gradually disappear? WHAT DO I HAVE TO DO TO GET YOU GUYS TO STOP LINKING AND START UPLOADING?

Russ


Title: Re: 2 cylinder engine for a model boat
Post by: michael mott on October 13, 2015, 08:09:00 AM
Ok Russ
I hear you! one of the reasons that I have linked to Photobuket is that I cam add the text in between the photos which makes the text and pictures more relevant in a contextual way, for instance on another forum  I can upload the pictures to the forum site but I can also add them inline like this (See picture at the end of this text)

with your site they always line up at the end after the text . is there a way to put the pictures into the text without them piling up at the end .

I do not have a problem with a limit of 4 pictures or the size of the total uploads.
I think that the reason others have done what I have done is because of the same reason I did it. I would be happy to support the site with some funds if this option costs more money for you.

Regards Mike



 


Title: Re: 2 cylinder engine for a model boat
Post by: Barney on October 13, 2015, 09:24:31 AM
Speechless - groans and mutters - and superb photos Im on a downer now !!!
Barney
sleeping


Title: Re: 2 cylinder engine for a model boat
Post by: finescalerr on October 13, 2015, 01:42:57 PM
Michael, first thank you for posting your new photos properly (on the street trackage thread).

Everyone: I don't want to mess up this thread with any more posts about photos so I'll leave it at this: For now we are stuck with the current software. It has limitations and it's crude. I've known it since about 1998 and tried to get my web guy to change things. He says any change would cost more than it's worth. Volker will ask the owner of another site about different software. If it makes sense, I'll change things. Don't count on it, though.

Bottom line: As the gentlemen I know all of you to be, please have the courtesy to post properly from now on -- no links. Don't do it for me (although it would be common courtesy) but for yourselves and your fellow modelers. It is almost a crime when, after a few months, your magnificent work disappears and the valuable lessons you have taught us simply disappear. Leave a legacy!

Russ


Title: Re: 2 cylinder engine for a model boat
Post by: marc_reusser on October 13, 2015, 11:04:19 PM
Simply WOW!...and floored!. Beautiful.



I agree the lack of in-line posting is a big PiTA....the only way around it is to post each pic and its description in a separate post.
If necessary, the file size allowed (currently it is set at 230kb) for a single, or combined 4 max attachments, per post, could be increased; if that helps in the meantime.


Title: Re: 2 cylinder engine for a model boat
Post by: lab-dad on October 14, 2015, 05:53:16 AM
Marc has risen!


Title: Re: 2 cylinder engine for a model boat
Post by: Bill Gill on October 14, 2015, 06:22:54 AM
This isn't a model, it's miniature reality!


Title: Re: 2 cylinder engine for a model boat
Post by: JohnTolcher on October 14, 2015, 08:24:07 AM
Amazing work Michael!

(I pretty much always post one image per post, so I may end up with 6 or more consecutive posts. It doesn't seem to be a problem, down sizing images to 230 kb takes longer.)


Title: Re: 2 cylinder engine for a model boat
Post by: nk on October 22, 2015, 09:59:28 AM
This is mind-boggling wonderful Michael. This is the kind of stuff I used to see in the science museum as a kid and wonder how it could have been made...now I know!


Title: Re: 2 cylinder engine for a model boat
Post by: michael mott on November 23, 2017, 02:11:20 AM
I am going to redo the pictures that are all linked to P Bucket in the posts that they are in. Because they were inline I need to split up the posts that have more than 4 pictures. I have already replaced the pictures in the first post, the next one will obviously be at the end of this thread Onece I have added all the information I will delete the posts with the linked images.

this shows the three water jackets that were made the first two rejected for machine errors

next is a special cutter I made for making the recess in the base flange.

The base pan was fabricated from bar and sheet.

the bearings wer reamed after the rough blocks were bolted with 0x80 studs and nuts fabricated from hex and steel wire.

Michael


Title: Re: 2 cylinder engine for a model boat
Post by: michael mott on November 23, 2017, 02:17:58 AM
the crankshaft was fabricated from tool steel bar and rod ansd silver soldered together

the gearbox and reverser were the trickiest part

the next pic shows the fabrication of the band clamp this was made from a solid ring milled and filed to final shape.

A hex broach was made to build the plates of the clutch.

the forward and revers lever was cut and filed out of some bar stock

Michael


Title: Re: 2 cylinder engine for a model boat
Post by: michael mott on November 23, 2017, 02:23:10 AM
The pistons were made from aluminum and are 5/16 inch in diameter

the slit big end bearinds were turne up in brass.

the timing gears wer milled from brass rod after making the gear cutter from drill rod

Michael


Title: Re: 2 cylinder engine for a model boat
Post by: michael mott on November 23, 2017, 02:29:05 AM
next the various bits of piping for the engine had to be fabricated out of tube to allow the water and fuels to flow. I did a lot of test to come up with a way to make tight bends in copper and brass tube without collapsing the tubes this was finally accomplished by annealing the tube then inserting some styrene rod, bending then burning out the styrene.

a special tap for making the unions this is 80 threads per inch and 1/8th in diameter

Michael



Title: Re: 2 cylinder engine for a model boat
Post by: michael mott on November 23, 2017, 02:36:35 AM
a special tap for making the unions this is 80 threads per inch and 1/8th in diameter

The working spark plugs are made from Corian .020 music wire and 1/8th hex stock.

The valves are turned from some 1/8th drill rod.


Tapping the holes for the inlet manifold in the block

Michael


Title: Re: 2 cylinder engine for a model boat
Post by: michael mott on November 23, 2017, 02:37:57 AM
the final pic showing the pipe bending for the manifold

This thread should be safe now, trying to do this stuff while falling asleep is not recommended.

Michael


Title: Re: 2 cylinder engine for a model boat
Post by: Bill Gill on November 23, 2017, 07:39:11 AM
Geez, Mike, the only thing you haven't done for this engine is mine and refine the copper. It's looking terrific and I still hope you can make a video when you run it.


Title: Re: 2 cylinder engine for a model boat
Post by: finescalerr on November 23, 2017, 01:15:41 PM
Yesterday, when I had a few minutes, I milled, drilled, cut, and assembled three or four motors identical to Michael's from nickel silver. While Bill pointed out a shortcoming of Michael's work, I actually did extract and refine my own raw materials and, since I was bored, also happened to develop a superior new alloy. Michael's modeling is okay, of course, but I'm sure everyone would agree my work is so much better and more detailed, quite aside from its being a fully functioning diesel in 1:64 scale. I'd post electron microscope images but I'm far too modest. Still, nice work, Michael .... -- ssuR


Title: Re: 2 cylinder engine for a model boat
Post by: Greg Hile on November 23, 2017, 01:39:55 PM
Well, that's my problem. After extracting, refining, and developing new alloys, I got hungry and by the time I was finished slaughtering the pig, curing the ham and baking the sandwich bread, I only had time to mill and drill, so I said, eh, maybe tomorrow ...


Title: Re: 2 cylinder engine for a model boat
Post by: mad gerald on November 23, 2017, 01:40:59 PM
Yesterday, when I had a few minutes, I milled, drilled, cut, and assembled three or four motors identical to Michael's from nickel silver. While Bill pointed out a shortcoming of Michael's work, I actually did extract and refine my own raw materials and, since I was bored, also happened to develop a superior new alloy. Michael's modeling is okay, of course, but I'm sure everyone would agree my work is so much better and more detailed, quite aside from its being a fully functioning diesel in 1:64 scale. I'd post electron microscope images but I'm far too modest. Still, nice work, Michael .... -- ssuR
Muahaha ... this is awesome! Almost shot coffee out my nose just now ... ROTFL  :D


Title: Re: 2 cylinder engine for a model boat
Post by: Greg Hile on November 23, 2017, 01:41:49 PM
Oh, and I forgot, really great work Michael!


Title: Re: 2 cylinder engine for a model boat
Post by: michael mott on November 23, 2017, 03:40:01 PM
Hmmm not a word about the extra work converting all those P-bucket links in order to please some skilled nickle-silver worker. Wot is a chap supposed to do?

Michael


Title: Re: 2 cylinder engine for a model boat
Post by: Ray Dunakin on November 23, 2017, 09:41:35 PM
Marvelous work, Michael!


Title: Re: 2 cylinder engine for a model boat
Post by: Allan G on November 24, 2017, 12:05:46 AM
Amen!!!!!!……Allan