Author Topic: Stuart Beam 'Again' but in the UK!  (Read 14149 times)

simplyloco

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Re: Stuart Beam 'Again' but in the UK!
« Reply #45 on: November 09, 2017, 06:10:32 PM »
Valve chest and cylinder completed, plummer blocks fettled, only the valve gear left to do, hopefully by Monday. I gave up on the fabrication route as it was a bit fiddly! I'm mounting it on some 1/4"  composite board. It is very stable and takes screws quite well!

WP_20171109_17_28_44_Pro[1] by inkaboat, on Flickr


« Last Edit: November 09, 2017, 06:14:30 PM by simplyloco »

simplyloco

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Re: Stuart Beam 'Again' but in the UK!
« Reply #46 on: November 15, 2017, 11:31:01 PM »
This little link for the cylinder valve was without doubt THE hardest thing so far, as it was all done by hand. I have another to make, and eight similar links for the parallel motion, so tomorrow I will devise a suitable machining fixture to make life a little easier...
John
WP_20171115_23_15_43_Pro[1] by inkaboat, on Flickr

simplyloco

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Re: Stuart Beam 'Again' but in the UK!
« Reply #47 on: November 17, 2017, 05:14:05 PM »
We have parallel motion! The bearing blocks are a bit loose as they are waiting for posh studs, but I'm well pleased that it works. There won't be any ghastly nuts in sight: dummy cotter pins will rule OK!
Click on the picture for the action video!
John

00001 by inkaboat, on Flickr
« Last Edit: November 17, 2017, 05:17:18 PM by simplyloco »

Offline b.lindsey

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Re: Stuart Beam 'Again' but in the UK!
« Reply #48 on: November 17, 2017, 06:32:51 PM »
The parallel motion looks great John. So what kind of fixture did you come up with to help with all those links....fiddly work for sure!!!

Bill

simplyloco

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Re: Stuart Beam 'Again' but in the UK!
« Reply #49 on: November 17, 2017, 07:52:14 PM »
The parallel motion looks great John. So what kind of fixture did you come up with to help with all those links....fiddly work for sure!!!

Bill

Start with by drilling/reaming the ends and radiusing using buttons and place in fixture. I made my own needle roller revolving centre and some special cups to suit.
WP_20171116_16_08_58_Pro by inkaboat, on Flickr

Turn, file and emery paper until you get  this:
WP_20171116_15_24_56_Pro by inkaboat, on Flickr

Finish in the vice with the buttons, replace in the fixture to finish shaping/polishing.
John
« Last Edit: November 17, 2017, 09:06:00 PM by simplyloco »

simplyloco

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Re: Stuart Beam 'Again' but in the UK!
« Reply #50 on: November 20, 2017, 09:12:57 PM »
Nearly finished the machining: just the long connecting rod and links to make. The fiddly bits were the hardest parts for me. Next the fettling, filling, polishing, fitting and painting, which is the enjoyable part!
Yes, I'll shorten the 2mm grubscrews later!
John

WP_20171120_21_04_09_Pro[1] by inkaboat, on Flickr


Offline b.lindsey

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Re: Stuart Beam 'Again' but in the UK!
« Reply #51 on: November 21, 2017, 12:46:10 AM »
Really nice John. Almost a shame to pain over those nice finishes  ;)

Bill

simplyloco

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Stuart Beam machining completed
« Reply #52 on: November 21, 2017, 06:59:17 PM »
Completed the machining today! Now all I have to do is bring it up the standard of another certain beam engine builder on here...
Short video clip just to prove it!.
John
00002 by inkaboat, on Flickr

Offline J.L.

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Re: Stuart Beam 'Again' but in the UK!
« Reply #53 on: November 21, 2017, 08:05:43 PM »
Hi John,

Beatiful work! :ThumbsUp:

I look forward to seeing this machine in motion.

Well done!

John

simplyloco

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Re: Stuart Beam 'Again' but in the UK!
« Reply #54 on: November 26, 2017, 05:51:55 PM »
Why do components always look nice in grey primer, and then get ruined when we finish paint them!
WP_20171126_16_45_20_Pro by inkaboat, on Flickr

While waiting for the paint to dry I had a go at the cylinder cladding. I had a piece of mahogany, but it was pretty fat, so I used my new saw to make the 1/8" planks. I used a cut down 5/16" bandsaw blade, but even using that I soon encountered 'the drift' of the blade to the right, so I used the hold down edge against the blade to stop the deflection and keep everything straight. It works a treat, but I have some miniature bearings so I will make a 'bandsaw conversion' that sits on the hold down to keep the blade steady!

WP_20171126_15_44_31_Pro by inkaboat, on Flickr

Home-made mitre block to ensure that I got 26 planks of the same length.
WP_20171126_15_51_47_Pro by inkaboat, on Flickr

Here's the tryout with some of the planks, but the grain is bit too coarse for the scale, so, having proved the method I'll cut up some nice close grained Maple that's been kicking around looking for a reason for its existence! It'll make a nice contrast against the black cylinder. It also looks like I'll be cutting the angle on the plank edges as I'm not too happy with the circumferential gaps!

WP_20171126_16_42_39_Pro by inkaboat, on Flickr
« Last Edit: November 26, 2017, 05:56:21 PM by simplyloco »

Offline b.lindsey

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Re: Stuart Beam 'Again' but in the UK!
« Reply #55 on: November 26, 2017, 07:43:44 PM »
That cladding looks very nice John...a very vintage look to it as well which fits right in with the engine :)

Bill

simplyloco

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Re: Stuart Beam 'Again' but in the UK!
« Reply #56 on: December 02, 2017, 07:21:17 PM »
British Racing Green, brass studs and domed nuts! It'll be lovely when it's finished. I hope...
For the observant folks out there: I've yet to adjust the height of the studs to provide the regulation one and a half threads showing!
John

WP_20171202_19_03_15_Pro[1] by inkaboat, on Flickr

simplyloco

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Re: Stuart Beam 'Again' but in the UK!
« Reply #57 on: December 04, 2017, 06:52:25 PM »
Studding made easy!
After mucking about attempting to get all the studs at the correct height I hit upon a short cut. I'm sure it's been done before, but I domed the nut and stud in the lathe, applied Loctite retaining compound, and turned the nut back one thread and waited for the resultant set. The result is shown below. The stud was screwed in making sure that there was sufficient bottom clearance. Simples!

WP_20171204_18_30_13_Pro[1] by inkaboat, on Flickr

Stud Heaven: all exactly the same height! :whoohoo:

WP_20171204_18_04_17_Pro[1] by inkaboat, on Flickr
« Last Edit: December 04, 2017, 06:55:44 PM by simplyloco »

Offline Admiral_dk

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Re: Stuart Beam 'Again' but in the UK!
« Reply #58 on: December 04, 2017, 09:14:03 PM »
Nice "cheat"  :ThumbsUp:

Though I'm nut not into studs as such, I must admit that you have reached a very nice looking engine with paint, studs, nuts, finish and all  :praise2:

simplyloco

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Re: Stuart Beam 'Again' but in the UK!
« Reply #59 on: December 04, 2017, 11:53:58 PM »
Nice "cheat"  :ThumbsUp:

Though I'm nut not into studs as such, I must admit that you have reached a very nice looking engine with paint, studs, nuts, finish and all  :praise2:

Thanks for that: I try to get it right!

 

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