Author Topic: Robinson Revisited.......  (Read 30964 times)

fcheslop

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Re: Robinson Revisited.......
« Reply #30 on: May 14, 2013, 10:42:52 PM »
I wish Iv nearly forgotten what the toy room looks like :Lol: and the DIY scroll just gets bigger Im sure wor lass thinks Iv got a 28hour day
cheers and thanks for the offer :lolb: but we've got a poppop boat to sail :facepalm:
« Last Edit: May 14, 2013, 10:49:20 PM by fcheslop »

Offline Hopper

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Re: Robinson Revisited.......
« Reply #31 on: May 15, 2013, 06:23:53 AM »
Lovely job.
You could maybe paint the inside of the waterjacket with Glyptal casting sealer?
Or similar high temp epoxy paint.
Might cut down heat transfer a shade but not too much. And would make it rust proof.

Offline Stilldrillin

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Re: Robinson Revisited.......
« Reply #32 on: May 15, 2013, 07:22:05 AM »
Frazer.
You go and enjoy. Sharing quality time......   ;)

Hopper.
Never come across Glyptal! Don't intend stripping/ painting again, for a long time.

But..... I came across a can of water dispersant, long forgotten, in the workshop.  :whoohoo:
Must have followed me home from work one day, long ago! I'll give it a swill out, after running........  :ThumbsUp:

Stillsmilin'.  :D

David D
David.
Still modifying bits of metal... Occasionally, making an improvement!
Still drilling holes... Sometimes, in the right place!

Bluechip

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Re: Robinson Revisited.......
« Reply #33 on: May 15, 2013, 08:11:24 AM »
Hopper.
 Don't intend stripping/ painting again, for a long time.

David D

Glyptal ?? Not at this price you won't ...  :o

http://www.amazon.co.uk/Eastwood-Glyptal-sealant-aluminium-castings/dp/B00C68DQ4G/ref=sr_1_1?ie=UTF8&qid=1368601561&sr=8-1&keywords=glyptal

Used to use it as a high voltage coating to stop corona .. [ electrical, not fizzy pop .. ]

If you really want to paint the inside, you might try this stuff. Somewhat cheaper.

 

http://www.marinemegastore.com/product-product-AQU_Q05167.htm

Dave BC
« Last Edit: May 15, 2013, 08:18:41 AM by Bluechip »

Bogstandard

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Re: Robinson Revisited.......
« Reply #34 on: May 15, 2013, 08:34:55 AM »
It's been a long journey Dave, but a lovely end result. :NotWorthy: :praise2: :NotWorthy:

I just hope mine turns out as well when eventually .........


John

Offline tangler

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Re: Robinson Revisited.......
« Reply #35 on: May 15, 2013, 11:11:55 AM »
Very nice indeed.  Very tempting.  Next project perhaps.....

Well done,

Rod

Offline Don1966

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Re: Robinson Revisited.......
« Reply #36 on: May 15, 2013, 02:06:07 PM »
Great job on the Robertson Dave, enjoyed the video.

Don

Offline mhirst121

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Re: Robinson Revisited.......
« Reply #37 on: May 15, 2013, 02:31:08 PM »
Great job Dave, looks and runs superb. It is tempting me to have a go at one myself, would go nice with my Rider model.

Cheers,
MartinH
Carlisle, Cumbria, UK
A creative mess is better than idle tidyness !!

Offline NickG

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Robinson Revisited.......
« Reply #38 on: May 15, 2013, 06:25:40 PM »
Yeah we'll done David running sweetly and looks great - sure its the same engine?!

Offline Stilldrillin

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Re: Robinson Revisited.......
« Reply #39 on: May 15, 2013, 08:59:22 PM »
Thanks for all your kind comments Chaps!  :)

It has been a while hasn't it. And, it's not over yet!   :facepalm:

Bought some 'inch and a bit' dia. brass tube offcuts from Harrogate. For burner body, and cooling tower.

Needs a wooden base.

This thing could run and run........   :thinking:

David D
David.
Still modifying bits of metal... Occasionally, making an improvement!
Still drilling holes... Sometimes, in the right place!

Offline Stilldrillin

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Re: Robinson Revisited.......
« Reply #40 on: May 16, 2013, 09:06:00 PM »
I've started work on the gas burner.

Machined the jet area, as a mixed copy of my Bix burner, and the Scott engine plans......




Another section of Russian vacuum cleaner pipe, and offcut of mini lathe guard.

Think I'm getting the hang of this silver soldering now........




Topped a brass disc to 1.400"......




And perforated........




Group shot, as of this eve.......




I'll make tubular spacer/ shelf, to hold the brass disc in place. Just inside the top of the pot.


Well..... That's the outside "done". What goes inside?

I intend to span the full internal diameter, with the inlet pipe. With outlet holes, or a slot, facing downwards.
Bouncing the gas off the floor, to fill the chamber more evenly. Maybe! ?

Anyone got any better internal ideas?

David D
« Last Edit: August 02, 2014, 01:55:03 PM by Stilldrillin »
David.
Still modifying bits of metal... Occasionally, making an improvement!
Still drilling holes... Sometimes, in the right place!

Offline Jo

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Re: Robinson Revisited.......
« Reply #41 on: May 16, 2013, 09:16:59 PM »
Nice David :ThumbsUp:.

Ok I need to know: how did you drill the pretty patterns  :noidea: are you using a DRO or just the rotary table?

Jo
Usus est optimum magister

Offline Stilldrillin

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Re: Robinson Revisited.......
« Reply #42 on: May 16, 2013, 10:18:05 PM »
Thanks Jo!

Using just the r/t, on mini mill. Two, or three turns in X, to give spacings.

David D
David.
Still modifying bits of metal... Occasionally, making an improvement!
Still drilling holes... Sometimes, in the right place!

Offline Stilldrillin

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Re: Robinson Revisited.......
« Reply #43 on: May 18, 2013, 08:17:50 PM »
Tested the MK 1 burner, this afternoon. Still got me eyebrows!  :ThumbsUp:

It all went very well, considering.   :whoohoo:

Sensible maximum. (Don't like the high centre cone).......




Sensible minimum.......




Turned right up......




With those blue tips being blown upward, I think we need some more holes!


Mid sensible, setting. It ran the engine perfectly!   :whoohoo:




A bit of cosmetic work to do on the pot, and drill some more holes..... Job's a good un!  :D

David D
« Last Edit: August 02, 2014, 02:34:26 PM by Stilldrillin »
David.
Still modifying bits of metal... Occasionally, making an improvement!
Still drilling holes... Sometimes, in the right place!

Offline Stilldrillin

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Re: Robinson Revisited.......
« Reply #44 on: May 20, 2013, 08:59:17 PM »
Drilled a few extra holes.

Some of them, larger diameters. Until testing showed all the little blue flames were where they should be.   :ThumbsUp:

So, I reduced the oal height to 1/2", painted and finish assembled......




Must say, I'm a little surprised at the lack of comments. Doesn't anyone build gas burners? 

Still..... I'm pleased at the performance of my first attempt.  :whoohoo:

David D
« Last Edit: August 02, 2014, 02:36:45 PM by Stilldrillin »
David.
Still modifying bits of metal... Occasionally, making an improvement!
Still drilling holes... Sometimes, in the right place!