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Author Topic: Britannia, Hall & B1  (Read 8468 times)

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Offline K-N-Gauge

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Re: Britannia, Hall & B1
« Reply #30 on: May 07, 2012, 12:34:58 AM »
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.

Very strange!

Online Dr Al

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Re: Britannia, Hall & B1
« Reply #31 on: May 07, 2012, 12:38:23 AM »
Sounds very like the motor problems I've experienced with one of my Britannias - as a matter of interest which batch model is it? The one I've had continual difficulty with is the original batch of 70000 Britannia herself.

I changed the brushes for Farish ones on this in the end, but am still not totally convinced this has cured it - I fear there are a batch of duff motors in this run of models.

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 #32 on: May 07, 2012, 12:55:01 AM »
Yes Al, it is Britannia. I will give it further runs in the next few days to see what transpires. Are the brushes easy to replace?

Offline Elvinley

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Re: Britannia, Hall & B1
« Reply #33 on: May 07, 2012, 04:14:03 PM »
This is all very strange. This loco is now running amazingly well!

The full story of what happened is this:

1. Loco was running nice and quietly but didn't like some points on my railway although all pickups and wires were fine.
2. Loco started to surge forwards and almost stop. Pickups checked ok.
3. I cleaned the wheels (already very clean) and cleaned the loco bearings of oil that had crept in from the gears. I did this by wrapping a cleaning cloth around a knife blade which was pressed against the bearings gently. Lots of muck came off this way.
4. As the bearings were being cleaned the loco was being run at a higher speed than normal. I noticed excessive heat and smoking.
5. The loco wouldn't move until cooled down and was erratic still. One of the connecting wires had broken during maintenance.
6. I put a new connecting wire between loco and tender. I put some small drops of Power Lube on the gears and the running improved.
7. I put some Power Lube on the tender bearings and a tiny amount on the loco motion (this had been oiled previously, but not the tender bearings)
8. No more stuttering over any points, runs almost silently and no erratic running.

This is now my best running Dapol steam. Hope it stays that way! Yesterday I thought it was a gonner.

Offline Newportnobby

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Re: Britannia, Hall & B1
« Reply #34 on: May 07, 2012, 04:35:11 PM »
Something out of the Twiglet Zone, but what a result. :thumbsup:
Keep us posted please, Ian, as I have a Dapol Brit (Tornado) that I bought when they first came out and it's never been used (I just didn't want to miss the run). My test track has 1st radius curves each end, hence not having run it yet ::)

Offline Elvinley

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Re: Britannia, Hall & B1
« Reply #35 on: May 07, 2012, 04:40:27 PM »
Something out of the Twiglet Zone, but what a result. :thumbsup:
Keep us posted please, Ian, as I have a Dapol Brit (Tornado) that I bought when they first came out and it's never been used (I just didn't want to miss the run). My test track has 1st radius curves each end, hence not having run it yet ::)

It will definitely need oiling and hours on end of running in before it performs properly.

Online Dr Al

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Re: Britannia, Hall & B1
« Reply #36 on: May 07, 2012, 05:08:09 PM »
It sounds like yours has the common surging/slowing, overheating, possible soft brushes/carbon shorting problem. As such don't count your chickens I'd say - I've been through all this with my 70000, thinking it is ok only to find the next time I run it it's as bad as ever. Still not convinced mine is really sorted.

Later batches seem not to suffer this - 70022, 70038 seem ok certainly. May be a duff batch of motors in 70000.

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 #37 on: May 07, 2012, 05:25:41 PM »
It sounds like yours has the common surging/slowing, overheating, possible soft brushes/carbon shorting problem. As such don't count your chickens I'd say - I've been through all this with my 70000, thinking it is ok only to find the next time I run it it's as bad as ever. Still not convinced mine is really sorted.

Later batches seem not to suffer this - 70022, 70038 seem ok certainly. May be a duff batch of motors in 70000.

Cheers,
Alan

Thanks for the info Al. I will give it regular runs and update on here.

 

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