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Author Topic: Britannia, Hall & B1  (Read 8456 times)

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Online Dr Al

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Re: Britannia, Hall & B1
« Reply #15 on: October 07, 2011, 06:41:25 PM »

That can bring its own set of problems. If the valve gear locks you can get the frozen loco being pushed along by its tender.


I don't think you understand the Dapol Britannia's mechanism. The motor is in the tender and drives the *loco* wheels through a driveshaft, so what you describe cannot happen to a Britannia.

Cheers,
Alan
Quote from: Roy L S
If Dr Al is online he may be able to provide a more comprehensive answer.

“We have also arranged things so that almost no one understands science and technology. This is a prescription for disaster. We might get away with it for a while, but sooner or later this combustible mixture of ignorance and power is going to blow up in our faces.” – Dr. Carl Sagan

Offline Karhedron

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Re: Britannia, Hall & B1
« Reply #16 on: October 07, 2011, 06:58:40 PM »
I understand how the Dapol tender drive works. My understanding was that the previous poster was suggesting that Dapol ditch the cardan-shaft approach and go for driven tender wheels as Farish do. I was pointing out that this approach was not perfect either. Both are compromises and neither is a panacea.
Well, that's just not good enough. Some fount of all knowledge you are!  :no:  ;)

Offline Elvinley

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Re: Britannia, Hall & B1
« Reply #17 on: April 18, 2012, 11:33:16 PM »
I took the plunge and sprayed the wheels and valve gear on mine the other day - glad I did. I made sure the valve gear was oiled prior to spraying and the performance of the loco has not been affected.


Offline Cazadoom

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Re: Britannia, Hall & B1
« Reply #18 on: April 18, 2012, 11:36:43 PM »
that looks really good!! much better than a production one!!! ...  sorted the problem kind of :-s .. i will now negotiate points and curve but the performance is still to be "improved"

Offline Elvinley

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Re: Britannia, Hall & B1
« Reply #19 on: April 18, 2012, 11:43:44 PM »
The loco is running very quietly these day. It was noisy to begin with but has had many hours of running. I do find that although all the pickups are working, if it is run over slightly uneven track it will sometimes stop. I find this with my Farish A1 too. It seems that these recent Pacifics like track to be very even. I never have this issue with any of the older pacifics or recent 4-6-0s.

Offline Elvinley

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Re: Britannia, Hall & B1
« Reply #20 on: April 19, 2012, 09:23:27 PM »
Typical! You paint the wheels black and then find out Dapol were right after all :)


Offline 4x2

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Re: Britannia, Hall & B1
« Reply #21 on: April 19, 2012, 09:29:09 PM »
shhhh....! Next you'll be telling me that shade of GWR green Dapol use is right as well... (i hope not, it's awful !)
If it's got rails... you have my full, undivided attention - Steam, diesel and electric, 'tis all good !

Mike

Offline Elvinley

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Re: Britannia, Hall & B1
« Reply #22 on: April 19, 2012, 09:34:09 PM »
Yes, here we see an 03 sporting it:




Offline 4x2

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Re: Britannia, Hall & B1
« Reply #23 on: April 19, 2012, 09:48:27 PM »
Yes, here we see an 03 sporting it:


aww.... poor 03 !  :smiley-laughing:
If it's got rails... you have my full, undivided attention - Steam, diesel and electric, 'tis all good !

Mike

Online Dr Al

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Re: Britannia, Hall & B1
« Reply #24 on: April 20, 2012, 08:54:22 AM »
Typical! You paint the wheels black and then find out Dapol were right after all :)

Only the tyres are silver on this loco. So Dapol still wrong. And in service I don't believe they looked like this from all the pictures I've seen - this is a 'bulled up' loco.

Cheers,
Alan
Quote from: Roy L S
If Dr Al is online he may be able to provide a more comprehensive answer.

“We have also arranged things so that almost no one understands science and technology. This is a prescription for disaster. We might get away with it for a while, but sooner or later this combustible mixture of ignorance and power is going to blow up in our faces.” – Dr. Carl Sagan

Offline Elvinley

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Re: Britannia, Hall & B1
« Reply #25 on: April 20, 2012, 10:26:34 AM »
I know, I was just messing about. I won't be reverting to grey wheels and I won't be painting the roof white either!

Offline Elvinley

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Re: Britannia, Hall & B1
« Reply #26 on: May 06, 2012, 01:20:57 PM »
My Brit has given up on running like a normal loco as of this morning and has started to behave like a Kangaroo. It has plenty of oil, is picking up on all the normal wheels but is running terribly. It had quietened down nicely as well. Oh well, another Dapol loco goes haywire.

Edit: Oh dear, it is now smoking.
« Last Edit: May 06, 2012, 02:09:41 PM by Elvinley »

Offline Roy L S

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Re: Britannia, Hall & B1
« Reply #27 on: May 06, 2012, 02:43:27 PM »
Sounds like the all too familiar Dapol motor overheating/failure issue.

I do hope that this issue has been sorted and does not persist in more recent models like the Hall, A4 and A3.

You do seem to have far more than your fair share of bad luck Elvinley.

Cheers

Roy

Offline Elvinley

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Re: Britannia, Hall & B1
« Reply #28 on: May 06, 2012, 02:55:09 PM »
I let the motor cool,  and put yet more oil on the gears. It also needed a new connection wire by the time I had done this, so that is now replaced. Need to give it another run later and see how it goes. I have also cleaned the wheel bearings as oil inevitably gets on them. I used a little bit of Powerlube this time.

Offline Elvinley

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Re: Britannia, Hall & B1
« Reply #29 on: May 06, 2012, 11:35:33 PM »
After some spluttering, it has been running for about half an hour with no problems. One thing I have found with the motor - it doesn't like being run fast even for a few seconds and quickly overheats. at the moment it is running better than it did originally. All very strange.

 

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