Author Topic: Dale's k 27 By Kozo  (Read 63558 times)

Offline dalem9

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Re: Dale's k 27 By Kozo
« Reply #90 on: August 20, 2015, 02:31:16 AM »
Her is my water pump

Offline dalem9

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Re: Dale's k 27 By Kozo
« Reply #91 on: August 20, 2015, 02:49:04 AM »
Here it is running on air

Offline kvom

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Re: Dale's k 27 By Kozo
« Reply #92 on: August 20, 2015, 01:03:56 PM »
Major milestone there.  Congrats!

Offline b.lindsey

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Re: Dale's k 27 By Kozo
« Reply #93 on: August 20, 2015, 04:53:55 PM »
Bet you are really chuffed over seeing it in motion Dale even under air power. Congrats!!

Bill

Online Roger B

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Re: Dale's k 27 By Kozo
« Reply #94 on: August 20, 2015, 05:51:03 PM »
It's a good feeling when it starts to move on its own  :)  :ThumbsUp:  :ThumbsUp:
Best regards

Roger

Offline dalem9

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Re: Dale's k 27 By Kozo
« Reply #95 on: August 22, 2015, 01:34:44 PM »
Thanks Guy's

Offline dalem9

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Re: Dale's k 27 By Kozo
« Reply #96 on: August 22, 2015, 03:36:35 PM »
Water pump is done .

Offline b.lindsey

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Re: Dale's k 27 By Kozo
« Reply #97 on: August 23, 2015, 01:18:43 AM »
That looks good Dale and seems to be working quite smoothly too!!  Nicely done.

Bill

Offline dalem9

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Re: Dale's k 27 By Kozo
« Reply #98 on: August 30, 2015, 10:16:04 PM »
Well I have two of the side rods done .I have missed up two sets of the rear ones . But there is always tomorrow .

Offline dalem9

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Re: Dale's k 27 By Kozo
« Reply #99 on: November 30, 2015, 09:18:10 PM »
 :cheers:Here is the boiler pump ,not totally done but close .

Offline b.lindsey

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Re: Dale's k 27 By Kozo
« Reply #100 on: December 01, 2015, 01:31:59 AM »
Good to see you back Dale. I always enjoy your updates on this loco.

Bill

Offline paul gough

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Re: Dale's k 27 By Kozo
« Reply #101 on: December 01, 2015, 08:51:58 AM »
Greetings Dale, I have a question regarding the piston valves which I hope you (or anyone) can shed some light on. I note Kozo's article in Live Steam (July/August) specifies 0.04 mm.,( 1 thou), for the clearance and advises thermal expansion will enable an adequate seal with minimal leakage. My question is, do you consider this close tolerance combined with expansion of the valve set up a 'molecular seal'? By this I mean the seal is brought about by the very thin film of water/oil on the surface of the valve head and wall of the valve chamber. I remember reading about molecular sealing somewhere but have forgotten where. I thought this design might be taking advantage of it and would be very interested in how effective it is. I do not have any of Kozo's books on other engines to help clarify his ideas further. There might be value for me here in overcoming the sealing issues relating to the disk engine I have some interest in. Regards Paul Gough.

Offline dalem9

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Re: Dale's k 27 By Kozo
« Reply #102 on: December 01, 2015, 01:19:01 PM »
Hi Paul, Kozo says that there is going to be a small leakage of steam. I tried to check to see how much leakage there was and did not notice any . I was only using about 10 # of air pressure . Now that may change when run on steam . I took a lot of care to get the clearance close in the valve . It may change when things get hot . I am not sure that under higher pressures if the seal will be as good . If you think about it there is very little time that the steam has to leak on each cycle . We will see . Hope this helps . Dale

Offline paul gough

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Re: Dale's k 27 By Kozo
« Reply #103 on: December 02, 2015, 10:50:18 AM »
Thank you for your comments Dale. It will be interesting indeed to see what results are obtained with steam and the use of this close tolerance. Please let us know how things go when you get to that point. Regards Paul Gough.

Offline dalem9

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Re: Dale's k 27 By Kozo
« Reply #104 on: December 02, 2015, 01:00:59 PM »
I sure will .At the end of this build I am sure I will be a lot wiser on the way this will work out .   

 

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