Author Topic: CONWAY 0-4-0 3 1/2" GAUGE LOCO  (Read 123131 times)

Offline Firebird

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #1185 on: June 04, 2020, 08:08:29 AM »
Hi Zephyrin

I think (hope) you are right. The one thing I didn't check was whether or not the valve was sitting down fully on the port face. The buckle is a good fit in the valve so might be out of alignment just enough to hold the valve off.

Another strip down today  ::)

Cheers

Rich

Offline Firebird

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #1186 on: June 04, 2020, 08:24:55 PM »
Hi

Stripped one side down again and found a few problems.

The liquid gasket I use, which is very good, has seeped into the valve chamber



And also under the slide valve



After a clean up which didn't take long I applied engineers blue to a bit of steel plate, held the valve chest onto it and slid the valve back and forth. Its getting a good contact so no problem there



Holding the valve chest sideways the valve doe's fall away from the port face. I found a topic about a ROBROY loco that suffered the same problem. The guy sorted it by fitting 2 small springs so I have done the same. I have drill 2 holes in the under face of the driving nut and fitted 2 small stainless steel springs. Quite light springs but enough to hold the valve against the port face







A couple of videos



A paper gasket instead of the liquid gasket



One side done. I have fitted new bolts this time the socket heads were getting loose



Cheers

Rich


Offline Admiral_dk

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #1187 on: June 04, 2020, 09:30:38 PM »
Looks like you are on the right track - looking forward to a happy dance, video etc.  :cheers:

Offline Johnmcc69

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #1188 on: June 04, 2020, 11:08:30 PM »
That's a neat "trick" using springs like that. I hope it solves the problem.

 It is a beautiful loco you have built!

  :ThumbsUp:
 John

Offline michaelr

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #1189 on: June 05, 2020, 08:56:53 AM »
Good work on the slide valves, hope you are rewarded with a successful steam up.

michaelR

Offline Firebird

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #1190 on: June 05, 2020, 07:20:14 PM »
Hi


 :whoohoo: :cartwheel:

Cheers

Rich

Offline michaelr

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #1191 on: June 05, 2020, 07:52:55 PM »
Really pleased for you, all your work and perseverance has paid off and the engine sounds good.

Michaelr

Offline Roger B

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #1192 on: June 05, 2020, 07:57:51 PM »
Still following along  :ThumbsUp:  :ThumbsUp:  :wine1: I thought IC engines had problems  ::)
Best regards

Roger

Offline Kim

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #1193 on: June 05, 2020, 08:40:25 PM »
Just beautiful, Rich!   :cartwheel:
Congratulations!  :ThumbsUp: :ThumbsUp:
Kim

Offline cnr6400

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #1194 on: June 06, 2020, 12:01:04 AM »
 :ThumbsUp: :ThumbsUp: :ThumbsUp: :popcorn: :popcorn: :popcorn:

Great news Rich! she's a runner! Well done with the spring implementation. Do keep an eye on oil supply especially in first running.

Offline Jo

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #1195 on: June 06, 2020, 06:49:30 AM »
 8)

Watch your oil spouts, fingers and thumbs in the motion - it takes no prisoners   ::)

Jo
Enjoyment is more important than achievement.

Offline Firebird

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #1196 on: June 06, 2020, 10:36:35 AM »
Hi

Thanks Michaelr, Roger, Kim, Cnr6400, and Jo  :ThumbsUp: :ThumbsUp:

Well I'm very happy to see it running  :whoohoo:

Some valuable lessons learned also which will help on the next loco build.

Next on the agenda is to make and fit a hydrostatic lubricator in place of the mechanical one. I have to do this before I can steam it up again and hopefully run on steam. Incidentally I had an email from our club yesterday which says it will be unlikely to open again this year  :( The club is situated in a park where there are restrictions in place so the rules have to be followed. But that means there is no rush now. I know it will raise steam and I know it will run on air. Before it runs on steam I need the lubrication system up and running.

Hopefully I have got the timing right and won't need to be reset, I don't fancy the idea of removing the valve chest covers again to see the slide valves  :ShakeHead: :hellno:

There are some workshop maintenance and tooling jobs to do anyway. I think my old Myford needs resetting for one, its turning a slight taper over long pieces.

Cheers

Rich

Offline Admiral_dk

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #1197 on: June 06, 2020, 08:11:20 PM »
Great news and a happy builder - well done Rich  :cheers:

Offline Firebird

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #1198 on: June 08, 2020, 05:45:51 PM »
Hi

Thanks Admiral  :ThumbsUp:

I have made a start on the hydrostatic lubricator. The tank will fit where the the mechanical lubricator used to be. I bit of 1 1/2'' copper tube just fits through the hole.

First up was to make something that will hold the copper tube







Because the tank is subject to full boiler pressure it will be tested as if it it is part of the boiler. I have used 16 gauge copper tube, 1/8'' thick copper for the end plates and a 3/16'' stay. A bit of over kill but its what I had to hand. The bushes are all phosphor bronze.





I have just silver soldered the lower end plate in, that's in the pickle right now

Cheers

Rich




Offline Firebird

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #1199 on: June 12, 2020, 09:44:25 AM »
Hi

I have finished all the silver soldering on the hydrostatic lub tank. There are 2 bushes in the top, one for the oil outlet and one for the filler. One bush in the bottom for the steam inlet and one bush on the side at the bottom for the drain valve. One slight difference to the drawing, I have used 1/4'' bronze for the stay not 3/16''. With all the bushes plugged I have done a hydraulic test to twice working pressure, 160 psi.







Cheers

Rich