Author Topic: CONWAY 0-4-0 3 1/2" GAUGE LOCO  (Read 68660 times)

Offline cnr6400

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #660 on: December 03, 2018, 12:33:54 AM »
Could be a first angle vs third angle projection thing - Mr Evans occasionally forgot which he was using in the same set of drawings (or maybe other people were doing the drawing on some details).

Offline Firebird

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #661 on: December 03, 2018, 08:10:10 PM »
Hi

Thanks  Chris and cnr6400  :ThumbsUp:

i have Just clicked onto page one by mistake  :old:. Can you believe I started this topic almost 2 years ago on
December 28 2016

Doesn't time fly when you are having fun  ::)

Cheers

Rich

Offline Firebird

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #662 on: December 08, 2018, 09:38:50 PM »
Hi

Some more assembly work. Fit the piston rings



The piston ring clamp/guide I made won't work will it  :facepalm: If I use it to fit the piston I won't be able to get it off so a slight mod is required, cut a slot in it










Slightly off topic I have modified the lift. it now bolts to the front and rear beams using the buffer mounting holes



The 4 socket head cap screws in each valve rod guide have been replaced and reversed with button head screws to give a little more clearance. The lock nuts on the valve rods were just fouling the nuts.



Things are getting a little stiffer now, mostly caused by the piston rings but it still turns over ok. Once I get it running on air it should bed in


Cheers

Rich

Online crueby

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #663 on: December 08, 2018, 09:41:26 PM »
Watching along - great work!

 :popcorn: :popcorn: :popcorn:

Offline Kim

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #664 on: December 09, 2018, 05:38:13 AM »
It still turns! That's got to be good  :ThumbsUp:   :popcorn:

Kim

Offline Roger B

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #665 on: December 09, 2018, 08:09:41 AM »
That's looking good  :praise2:  :praise2: Not long know until the first compressed air runs  :wine1:
Best regards

Roger

Offline zeeprogrammer

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #666 on: December 09, 2018, 02:54:22 PM »
Thanks for the video. It really helps to see what other people encounter.  :ThumbsUp:
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Online b.lindsey

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #667 on: December 09, 2018, 04:19:26 PM »
Still following along quietly Rich. Lots of great progress recently which you must be pleased with. These loco builds are just fascinating to me and your build log and pictures are excellent.

Bill

Offline Firebird

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #668 on: December 09, 2018, 05:02:48 PM »
Hi

Thanks Chris, Kim, Roger, Carl and Bill  :ThumbsUp:

The little crank I made that is the drive for the mechanical lubricator is pinned to the crank pin which once fitted prevents removal of the connecting rod and coupling rod  :thinking:



I decided it would be better to make one that is removable. Drill 2 holes in a bit of steel and slit with a slitting saw and ream



Cross drill tapping size for M2.5. Drill one side clearance for 2.5mm and tap the other side.







Thats better





The coupling that connects the valve rods is slightly out of line on the left hand side



I shall have to make another

Finally for this weekend I have made 4 pins from stainless steel that connect the eccentric rods to the expansion link





Cheers

Rich


Offline Firebird

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #669 on: December 13, 2018, 07:18:44 PM »
Hi

Not a lot to report so far this week.

Made a new valve rod coupling with the tapped holes spaced an extra 1/16"



Fits perfectly



Cheers

Rich

Online Ye-Ole Steam Dude

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #670 on: December 13, 2018, 07:51:03 PM »
Hello Rich,

Looking real good and the modifications look great  :ThumbsUp: :ThumbsUp:

Have a great day,
Thomas

Offline cnr6400

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #671 on: December 13, 2018, 08:08:51 PM »
I see an air run test in your near future Rich. Looking great!  :popcorn:

Offline Firebird

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #672 on: December 14, 2018, 05:59:27 PM »
Hi

Thanks Thomas and cnr6400  :ThumbsUp:

Well I'm not sure how soon  ::)

Got most of the valve gear assembled today and had a go at the valve timing  :headscratch:

You are not kidding Nick it is a right pain in the *$+%

Way back when I made the eccentrics I could see then there would be a problem and had the foresight to include an extra boss on the inner eccentrics so that I could turn them easily. The outer eccentrics which control the forward movement ahve to have the, for want of a better discription, big end end caps removed to get at the grub screw which is still underneath the other half. I have spent most of the afternoon trying to get just one side right and have given up for today
 :wallbang: :Mad: :cussing: :ShakeHead: :disappointed: :facepalm: :facepalm2: :noidea: :old:

Cheers

Rich

Online crueby

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #673 on: December 14, 2018, 06:09:25 PM »
When you do get the timing right, make a scribe mark across the shaft onto the eccentric. Then, just in case it needs to be disassembled in the future, or if something slips, you can reset it again in one go. I've seen people at a steamup have something slip, and spend a long time readjusting it again.
 :popcorn: :popcorn: :popcorn:

Offline NickG

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #674 on: December 16, 2018, 09:19:41 PM »
It is, ah I think I saw one of your eccentric sheaves and thought, that’s far better, you can rotate it and nip it without removing the strap - far easier. So there wasn’t room to do it on all? All of the eccentrics on my 3 1/2” Mabel have the grub screw under the strap, as you say, monumental pain in the #%^*!

You’ll get there though, just need a methodical method of doing it.


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