Author Topic: Agnes.... 1/16 Scale Pollit & Wigzell Tandem Compound Condensing Engine.  (Read 41927 times)

Offline b.lindsey

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Re: Agnes.... 1/16 Scale Pollit & Wigzell Tandem Compound Condensing Engine.
« Reply #165 on: December 07, 2017, 01:36:16 AM »
The floor work looks great Phil. The engine ain't half bad either !!

Bill
« Last Edit: December 07, 2017, 11:44:22 AM by b.lindsey »

Online vcutajar

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Re: Agnes.... 1/16 Scale Pollit & Wigzell Tandem Compound Condensing Engine.
« Reply #166 on: December 07, 2017, 06:32:37 AM »
Congratulations Phil.  Well deserved.

Vince

Offline Zephyrin

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Re: Agnes.... 1/16 Scale Pollit & Wigzell Tandem Compound Condensing Engine.
« Reply #167 on: December 07, 2017, 08:38:27 AM »
I spent great moment reading this thread from the first post, thanks to share, and congratulations !
Nice workshop and tooling too, and first class skills to master each step.

Offline Ramon

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Re: Agnes.... 1/16 Scale Pollit & Wigzell Tandem Compound Condensing Engine.
« Reply #168 on: December 07, 2017, 08:55:25 AM »
That's coming along really well Phil. The boards add a real dimension and look superb . Congrats on the win - that cup looks like it's seen a few recipients over the years.

Ramon
"I ain't here for the long time but I am here for a good time"
(a very apt phrase - thanks to a well meaning MEM friend)

Offline pgp001

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Re: Agnes.... 1/16 Scale Pollit & Wigzell Tandem Compound Condensing Engine.
« Reply #169 on: December 07, 2017, 01:13:31 PM »
Hi Ramon

The smaller cup was for best model in the "general engineering" class.

That big cup is for best "unfinished model", I have won it twice now but you are not allowed to win it on consecutive years.
The worry is that at my speed of output I could possibly be in danger of winning it a few more times before this one is finished  :old:

I have had a few traumatic events to deal with lately, so I am afraid workshop activities have been even less than my usual slow pace.  :(
Maybe when I retire in 4 years time things will get done quicker, I am not betting on it though.

Phil


Offline pgp001

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Re: Agnes.... 1/16 Scale Pollit & Wigzell Tandem Compound Condensing Engine.
« Reply #170 on: February 25, 2018, 06:47:05 PM »
Just in case anyone is wondering why they haven't seen any updates on Agnes recently. It's because I have been otherwise occupied with my new toy.

AKA Desmond the Morris.



Phil

Online crueby

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Re: Agnes.... 1/16 Scale Pollit & Wigzell Tandem Compound Condensing Engine.
« Reply #171 on: February 25, 2018, 08:28:31 PM »
Just in case anyone is wondering why they haven't seen any updates on Agnes recently. It's because I have been otherwise occupied with my new toy.

AKA Desmond the Morris.



Phil
Great looking car! Great condition. What year is it?

Though, I thought Desmond was a tutu, not a car....  :thinking:

Offline pgp001

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Re: Agnes.... 1/16 Scale Pollit & Wigzell Tandem Compound Condensing Engine.
« Reply #172 on: February 25, 2018, 10:32:20 PM »
Desmond was born in 1969 and has been fully restored including a new Ash wood frame.
He also has a few upgrades including servo disc brakes, telescopic shock absorbers and an alternator etc.

My wife is an animal lover and wanted to call him Johnny, after Johnny Morris who used to be a TV presenter.  :o
https://en.wikipedia.org/wiki/Johnny_Morris

I could not bring myself to call him Johnny, so accepted Desmond as second choice.  :-\
https://en.wikipedia.org/wiki/Desmond_Morris

Phil

Offline Ramon

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Re: Agnes.... 1/16 Scale Pollit & Wigzell Tandem Compound Condensing Engine.
« Reply #173 on: February 25, 2018, 10:45:48 PM »
Ah Phil - so you've got yourself a 'half timbered car'  :D

That's not my phrase but one 'Edna Everidge' to her long suffering friend Madge  - "Oh look Madge there's a half timbered car - isn't that quaint ? "

I once had a bright green Austin A55 Cambridge - 'Sean the Leprecaun'. Last car was 'Zipper' this ones 'Ziggy'.

Time you paid that girl Agnes some attention though ;)

Regards - Tug
"I ain't here for the long time but I am here for a good time"
(a very apt phrase - thanks to a well meaning MEM friend)

Online Gas_mantle

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Re: Agnes.... 1/16 Scale Pollit & Wigzell Tandem Compound Condensing Engine.
« Reply #174 on: February 26, 2018, 05:35:55 AM »
Very nice Phil  :)

Are you going to take up pipe smoking and wearing driving gloves for the authentic look  ;)

Offline cjuk

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Re: Agnes.... 1/16 Scale Pollit & Wigzell Tandem Compound Condensing Engine.
« Reply #175 on: April 23, 2018, 12:05:40 PM »
Looks great!! As a descendant of the pollits, my great grandfather was John Pollit, its great to see people building models of the surviving engines :)

Chris

Offline gary.a.ayres

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Re: Agnes.... 1/16 Scale Pollit & Wigzell Tandem Compound Condensing Engine.
« Reply #176 on: September 11, 2018, 07:35:10 AM »
Just read Page 1 and I'm hooked. Those castings!  :Love:

Can't wait to see the pics of that Alexander mill in action!

This one's for reading start to finish...

gary

Offline pgp001

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Re: Agnes.... 1/16 Scale Pollit & Wigzell Tandem Compound Condensing Engine.
« Reply #177 on: September 11, 2018, 08:00:46 AM »
Hi Gary

Glad you like it, I have not got much done this summer for various reasons but should hopefully get going again soon. Do you have an Alexander mill ?

Phil

Offline gary.a.ayres

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Re: Agnes.... 1/16 Scale Pollit & Wigzell Tandem Compound Condensing Engine.
« Reply #178 on: September 13, 2018, 09:10:36 PM »
Phil -

just finished reading your whole thread. Absolutely stunning work and a neophyte such as myself can only look on in wonder....

Great read too...

We each have our own rhythm and I am impressed by how unflustered you seem by any impulse to rush things!

I don't have an Alexander, unfortunately, or anything close. If I did I'd be on a steep learning curve about how to gear a dividing head to the table, and so on.

Shortage of machines isn't my problem; rather it's lack of experience, and to quote the signature of another member: 'ars longa, vita brevis'.

However... to keep learning and enjoying is the main thing for all of us.

 :)


Offline pgp001

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Re: Agnes.... 1/16 Scale Pollit & Wigzell Tandem Compound Condensing Engine.
« Reply #179 on: September 17, 2018, 10:42:23 AM »
It's probably about time I posted some more photo's. The only progress has been on the eccentric straps.

These were drawn up in Solidworks as usual, and started life as rough gunmetal castings. There are three eccentrics on this engine two the same for the inlet valves and one a bit thicker for the exhaust valves.



The outsides were cleaned up using a dremel.



Followed by a roughing cut to get a square datum to work from.



Then flipped over to do the other side.



Then the mating surfaces were machined square to the sides.



Spot drilling for the bolt holes.



Followed by the drill.



Bolted together and roughing out the bores. These will be finished to size held flat on the faceplate later so there is no distortion from holding in the chuck jaws.



On the first mandrel for facing to final thickness.



All three were brought to this stage.



Setting them to run true using a roller bearing in the toolpost.



At this point they were bored out to final size, but I was on a roll and forgot to take a photo.
So I then made an expanding mandrel to hold them for boring the stepped recess in either side.



The lubrication bushes were then silver soldered in prior to bead blasting.



A pair of filing buttons were made from silver steel and hardened, these are to finish the radius around the bolts.





And this is how they look today.



You will probably be thinking I have been busy on the engine lately, but the truth is I did what you see here last January and for various reasons have not touched it since.

Phil
« Last Edit: September 18, 2018, 05:49:21 PM by pgp001 »