Diesel Outline...

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FWLR
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Re: Diesel Outline...

Post by FWLR » Sat Nov 03, 2018 7:51 am

It’s so confusing Dave. On the forum it shows, Fri Nov 02, 2018 8:56 pm. I posted my reply to you at,Fri Nov 02, 2018 7:54 am…Only 1 hour difference mate… :scratch: :scratch: :lol: :lol:

You are 24 hours in front of us up here in the Northern Hemisphere aren’t you…?


Anyway back to your loco. Are you thinking of R/C Dave. It looks a bit tight under there. But I’am sure ge_rik could help with that. Or may be your quite capable yourself. :thumbright:

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Re: Diesel Outline...

Post by tom_tom_go » Sat Nov 03, 2018 9:58 am

The front looks like your best bet but you might have to make your own tank unless an Accucraft one might fit?

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Re: Diesel Outline...

Post by dewintondave » Sat Nov 03, 2018 8:19 pm

Rod, we are 13 hours ahead now.

No R/C for this loco
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Dave

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Re: Diesel Outline...

Post by dewintondave » Sun Nov 04, 2018 1:18 am

Here's the original gas tank, a converted steam boiler. It could be put inside a tank wagon.
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Best wishes,
Dave

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Re: Diesel Outline...

Post by dewintondave » Sun Nov 04, 2018 5:47 am

This afternoon I rearranged the gas valve to make it more compact. The dome on the top where the gas is drawn off
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Best wishes,
Dave

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Re: Diesel Outline...

Post by tom_tom_go » Sun Nov 04, 2018 8:25 am

That looks better Dave, why do you need such a large gas tank though?

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Re: Diesel Outline...

Post by dewintondave » Sun Nov 04, 2018 8:37 am

It was a pleasurable repurposing of the boiler Tom. And it works well with not getting too cold with the gas expansion due to its size
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Dave

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Re: Diesel Outline...

Post by FWLR » Mon Nov 05, 2018 7:49 am

dewintondave wrote: Sat Nov 03, 2018 8:19 pm Rod, we are 13 hours ahead now.

No R/C for this loco
Thanks Dave for putting me straight. :roll: :roll:

So what are your plans for underneath, if any mate.

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Re: Diesel Outline...

Post by dewintondave » Mon Nov 05, 2018 7:01 pm

No plans Rod, It's pretty full under there.
Best wishes,
Dave

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Re: Diesel Outline...

Post by dizzysteamer » Thu Dec 27, 2018 12:08 pm

HI Dave I,m very impressed with your building work and your clever idea's as a newbie to steam loco's I am finding bit interesting seeing idea's put into practice :D

Well done

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Re: Diesel Outline...

Post by dewintondave » Thu Dec 27, 2018 10:44 pm

Thank you Dizzy :thumbup: But I do run into trouble with the H&S police with their rigid views :D
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Dave

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Re: Diesel Outline...

Post by dewintondave » Sun Aug 23, 2020 8:34 am

A month ago I decided to have another go at fixing the diesel. The lubricator was still unsatisfactory as was the boiler sight glass. So I took the L.C. Mason book - Scale Model Traction Engine Building "featuring minnie" off the shelf and started to build the mechanical lubricator. It is a delightful little mechanism, very little material, but lots of time. There's the lovely click click of the pawls skipping over the ratchet wheel

Here's the lubricator fitted to the chassis running on quiet compressed air

Best wishes,
Dave

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Re: Diesel Outline...

Post by bambuko » Sun Aug 23, 2020 11:23 am

That's lovely Dave :thumbright:
Can you please give us some more details?
for example - how big is the body of this lubricator?
Did you build it exactly as per Mason's book or have you used the book as an inspiration and adapted the design for your needs?
Mason's book (long out of print) is nowadays costing silly money :oops:
It was also described in details in vol 135-136 of Model Engineer.
Last edited by bambuko on Sun Aug 23, 2020 3:01 pm, edited 1 time in total.

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Re: Diesel Outline...

Post by tom_tom_go » Sun Aug 23, 2020 12:23 pm

Lovely Dave, runs very smooth. I like the clicking noise as well.

The mechanical lubricator on my 5" gauge loco is of the clutch type which although works well I am concerned longer term it will fail and I will end up with seized cylinders!

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Re: Diesel Outline...

Post by dewintondave » Sun Aug 23, 2020 11:18 pm

bambuko wrote: Sun Aug 23, 2020 11:23 am Can you please give us some more details?
for example - how big is the body of this lubricator?
Did you build it exactly as per Mason's book or have you used the book as an inspiration and adapted the design for your needs?
Thank you

The tank is 9/16" x 5/8". I built it exactly to the plans. But the 30 tooth ratchet wheel didn't have enough teeth for my application, so I made a 36 and 42 tooth wheel next, the 42 tooth is the one being used, 36 wasn't enough either. So it's 3.5 turns of the wheels to 1 stroke of the pump. The pump delivery is adjustable, it's set to maximum at the moment

I can see myself using these on future models :thumbup:
Best wishes,
Dave

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Re: Diesel Outline...

Post by dewintondave » Sun Aug 23, 2020 11:26 pm

tom_tom_go wrote: Sun Aug 23, 2020 12:23 pm Lovely Dave, runs very smooth. I like the clicking noise as well.

The mechanical lubricator on my 5" gauge loco is of the clutch type which although works well I am concerned longer term it will fail and I will end up with seized cylinders!
Thanks Tom, it's a lovely project. LBSC would call it watchmaking

It's good to be able to see the winding handle going round rather than back and forth
Best wishes,
Dave

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Re: Diesel Outline...

Post by dewintondave » Mon Aug 24, 2020 3:06 am

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Drive shaft and eccentric
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Test pumping
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Milling the ratchet wheel with homemade cutter
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30T 36T 42T Ratchet wheels - hardened
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Ratchet wheel and fixed pawl
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Best wishes,
Dave

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Re: Diesel Outline...

Post by FWLR » Mon Aug 24, 2020 10:03 am

Another brilliant build Dave.... :thumbright: :thumbright:

Made me smile when I saw what you was using for the compressed air.... :D :D :D

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Re: Diesel Outline...

Post by bambuko » Mon Aug 24, 2020 10:18 am

dewintondave wrote: Sun Aug 23, 2020 11:18 pm ...I can see myself using these on future models :thumbup:
:D
Thank you Dave, for details and all the additional photos and explanations :thumbright:
BTW what solder did you use to secure cylinder cover?
Mason just says "...solder to cylinder..." without elaborating whether silver solder or just soft solder.

I can see this lubricator being very useful in other small models as well - thank you for bringing it to our attention :!:
I have looked at "miniaturising" LBSC's lubricator... but came to the conclusion that it wasn't very practical :oops:

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Re: Diesel Outline...

Post by dewintondave » Mon Aug 24, 2020 10:10 pm

FWLR wrote: Mon Aug 24, 2020 10:03 am Another brilliant build Dave.... :thumbright: :thumbright:

Made me smile when I saw what you was using for the compressed air.... :D :D :D
Thank you Rod! I call it quiet compressed air :D So many use those horrid noisy air compressors :thumbup:
bambuko wrote: Mon Aug 24, 2020 10:18 am
BTW what solder did you use to secure cylinder cover?
Mason just says "...solder to cylinder..." without elaborating whether silver solder or just soft solder.
Soft solder, same for the bushes and bearings mounted to the tank
Best wishes,
Dave

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