Author Topic: Three Cylinder Radial Engine (Read 91786 times)

Powder Keg · « **Reply #125 on:** January 16, 2010, 11:11:06 AM »

That is an unusual valve. Too bad some of this stuff is hidden when it's put togather.

NickG · « **Reply #126 on:** January 17, 2010, 03:57:33 PM »

Wow, nice work Stew, some great tips in there too. I am definitely going to have to try this D bit thing!

Nick

Rob.Wilson · « **Reply #127 on:** January 17, 2010, 04:06:18 PM »

Hi Stew

as Nick said , great thread and alot of good info , thanks for sharing

Regards Rob

sbwhart · « **Reply #128 on:** January 18, 2010, 11:57:23 AM »

Wes/Nick/Rob

Thanks for your nice comments and support.

Got some work done on the stand, had a sort through my stash and came up with these bits.

I had a square of black plastic that I was planning to use for the base but it was a bit on the thin side and the proportions didn't look like, that chunk of wood looks a bit thick as well

Any way made a start on the upright I'm using a bit of ally ingot, its nearly a pyramid, cleaning up the sides.

It was getting a bit difficult to clamp so tilted the head of the mill.

Found a thinner bit of hard wood under the bench that's is a bit thinner. don,t know what sort of wood it is, its a nice gingery red.

Squared up the edges in the mill and used a radius cutter to sculpt the edges.

And thats what its going to look like, I need to get some sand paper to clean it up a bit more but it looks OK.

Made a start on tidying things up and assembly, I,m not a great one for making things too shiny, its just a personal thing, I like them to display honesty and bare witness as to how they were made.

Have fun

Stew

Bernd · « **Reply #129 on:** January 19, 2010, 03:00:46 PM »

Stew,

That's a real nice looking stand you made there. It definatly fits the engine.

Bernd

sbwhart · « **Reply #130 on:** January 20, 2010, 07:30:38 AM »

Thanks Bernd, the wood machined up real nice concidering I was using milling cutters for steel on it.

Bit of a short update:- started assembly work, but soon realised that I'd forgotten to mill the 10 deg air pasage in the cylinder, decided the best way would be to use my 2 1/2" sine bar, her it is set up with the corect packing.

And this is how it was used to

Want to try gaskets made from brown paper stuck down with grease, these are the gaskets ready for use, with the tools of the trade.

Spent a fair bit of time makeing and fitting studs and putting the air pipes in the cylinders and giving thinga bit of a tidy up, tried assembling things losely together it all seems to fit.

And this is all the parts exploded appart.

If I can get the chance I'll start final assembly this afternoon and a trial run, fingers crossed.

Have fun

Stew

Stilldrillin · « **Reply #131 on:** January 20, 2010, 08:48:40 AM »

That`s looking really businesslike Stew!

Good luck with the first trial run......

David D

sbwhart · « **Reply #132 on:** January 20, 2010, 04:27:52 PM »

Dave thanks for the good wishes.

Didn't get the assy finished today just got a few studs to make and a hole to drill in the base, started to get tired, thirsty, and cold, so called it a day.

I don't know what you lads think but you don't really start to under stand an engine until you assy it and try to get it to run. I decided to fit the bearing housing to the crank case with studs and dome nuts it would have been easyer to use cap screws, the studs meant I had to line them up and at the same time get the crank lined up with the big ends in the con rod and the return crank, I havn't fiddled around so much since the first night of my honeymoon.

Any way couldn't resist trying out on the base to see what it looked like, so here's a taster:-

Don't half look OK don't it ?

Stew

spuddevans · « **Reply #133 on:** January 20, 2010, 05:08:16 PM »

To quote a "Scrapheap Challenge" contestant.......

"Proper Job"

Looking real good there

Tim

tinkerer · « **Reply #134 on:** January 20, 2010, 08:46:37 PM »

That is a beauty Stew.

Anticipating the video.

John Hill · « **Reply #135 on:** January 20, 2010, 09:13:57 PM »

That is really nice work Stew and I am sure it will be bursting into life real time soon!

Stilldrillin · « **Reply #136 on:** January 21, 2010, 03:38:58 AM »

Quote from: sbwhart on January 20, 2010, 04:27:52 PM

Don't half look OK don't it ?

Stew

That looks VERY ok Stew!

NickG · « **Reply #137 on:** January 21, 2010, 06:07:33 AM »

Nice 1 Stew, can't wait to see it running. Wish I could hear it though, videos don't tend to do these things justice!

sbwhart · « **Reply #138 on:** January 21, 2010, 07:45:23 AM »

Well got it running its a bit slugish I think my compresor is short of wind, not a lot of action to see realy stuck a bit of sticky tape on the flywheel so you could see it was going round, my untidy shop is probably more interesting.

Going to take it arround to a friends to try it on a bigger compressor and try a tacko on it

A happy Stew

andyf · « **Reply #139 on:** January 21, 2010, 08:08:38 AM »

Stew, I'm consumed with envy; nothing I make ever works first time (or in some cases, ever)

Congratulations!

Andy

Bernd · « **Reply #140 on:** January 21, 2010, 09:10:21 AM »

Stew,

That looks like a pretty good runner there. Nice job.

If you need a bit more wind, might sugest a couple of cans of beans. That should help out.

Ya, I know, bad idea.

But still a runner first time around, that deserves acouple of

Bernd

Stilldrillin · « **Reply #141 on:** January 21, 2010, 10:30:19 AM »

Sluggish?? ....... Sluggish??

There`s nowt sluggish about that, lad!

That`s a cracker! Blummin well done!

VERY pleased for you Stew!

David D

tinkerer · « **Reply #142 on:** January 21, 2010, 11:06:56 AM »

That is a sweet runner.

Bluechip · « **Reply #143 on:** January 21, 2010, 11:29:45 AM »

Stew

Great little engine .. I love it

speed is OK, I reckon 1500 rpm or so ...

Still not worked out how the valve works tho

Must be fixed to the crank ? Probably somewhere in your epic thread ..

PS Should it not be Tri Pot-ttyengineering ?

Dave BC

sbwhart · « **Reply #144 on:** January 21, 2010, 01:22:30 PM »

Hi Chaps thanks very much for your comments.

John breathed a bit of extra life into it, I'd got too much clearance in the orbital valve in the team chest, it really speeds along now tacho reading 2200 RPM at max air pressure and it throttles down to just a whisper.

I've got some vids that I'll edit and post over the weekend.

Thanks again

Stew

Divided he ad · « **Reply #145 on:** January 22, 2010, 04:53:10 AM »

Top notch work Stew

Looks great and turns over well enough.....

Quote

John breathed a bit of extra life into it,

He's good at doing that

Waiting to see the new vid(s), will be nice to see it run through a range of speeds

Ralph.

Rob.Wilson · « **Reply #146 on:** January 22, 2010, 11:09:13 AM »

Nice one Stew

Very cool engine

Regards Rob

sbwhart · « **Reply #147 on:** January 22, 2010, 11:52:58 AM »

Rob/Ralph

Thanks very much for your kind comments

Ralph:- John was just as chuffed as I was to see the engine running he spotted straight away how to tweak it to get an improvement.

Her's a posh pic for the album

And the promised edited Vid

Its been a really enjoyable engine to build, I hope you guys have enjoyed the journey as much as I have.

I've brought the drawings up to date and frozen them by changing the text from red to black, and attached them to this post

Have fun

Stew

Stilldrillin · « **Reply #148 on:** January 22, 2010, 12:08:55 PM »

Stew,

Blummin well done!

Thank you for showing!

David D

Darren · « **Reply #149 on:** January 22, 2010, 12:27:13 PM »

Well done Stew, that's a really nice looking engine

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Author Topic: Three Cylinder Radial Engine (Read 91786 times)

Rob.Wilson

Rob.Wilson