LMS Beyer Garratt at Hattons

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Bushey Troughs
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Re: LMS Beyer Garratt at Hattons

Postby Bushey Troughs » Tue May 05, 2015 3:10 pm

GWR_fan wrote:Hattons are only listing a heavily weathered early crest with rotating bunker as available. Given the number of You-tube videos from disappointed customers I decided to avoid this model as I did not need a shelf queen. Obviously some may have enjoyed their time with their models for it to get model of the year, but for me the risk of a failed dead on arrival was too great a concern.

Lots of videos on YouTube, of well pleased Garratt, owners. My 47975 is still running sweet as a nut no problems.
It was also Model of the Year, and won by a large margin.
COLIN.
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Bigmet
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Re: LMS Beyer Garratt at Hattons

Postby Bigmet » Mon Apr 04, 2016 11:20 am

Lysander wrote:Motor burn-outs have been reported by a number of RMWeb contributors...

It's been a long time coming, but I see today that someone has been sufficiently interested to actually open up a B-G motor following a failure while running. The commutator was the failed component, it had a melt down. My opinion (FWIW) is that this is most probably down to a materials failure; could be wrong material specified, could be incorrect material used in production of the motor. Now if that is what has been causing the majority of the reported 'failure whle running' problems with the model, it is at least readily rectified by motor exchange.

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Re: LMS Beyer Garratt at Hattons

Postby D605Eagle » Mon Apr 18, 2016 2:33 am

Had a problem with mine. The center and inner axles of each power bogie have compensation. The trouble is the coal bunker end one the inner axle was raised in the air, something was stopping the compensation from moving. I attempted to dismantle the power bogie, but it's a nightmare. The valve gear is so delicate its almost wafer thin. I did manage to get the top off and the motor out (a very tiny motor indeed) and the compensation seemed to free up enough for all wheels to sit on the track. A reassembly and it remained ok. The loco runs well now, but likes exceptionally well laid track.

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Re: LMS Beyer Garratt at Hattons

Postby GWR_fan » Sun May 01, 2016 7:35 am

D605Eagle wrote:...................... I did manage to get the top off and the motor out (a very tiny motor indeed) .


A $500.00 loco with two motors that you can purchase on eBay from China, five motors for $3.95 total with free postage.

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Re: LMS Beyer Garratt at Hattons

Postby Bigmet » Sun May 01, 2016 9:23 am

Hattons definitely had it specced down to a price. Given that they know the UK RTR model railway market well enough to have been the largest retailer 'forever', I am not going to argue with their call. What might it have cost if engineered to be a centre motor shaft drive to both power bogies design? Tricky, but definitely possible; and that of course would be as good as any centre motor diesel or electric type, as the old Rivarossi steam articulateds have been demonstrating for over forty years.

I would hope for the owners that an aftermarket opportunity is spotted by one of the motor and drive line specialists, and in time a re-motor kit emerges.

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Re: LMS Beyer Garratt at Hattons

Postby GWR_fan » Sun May 01, 2016 9:29 am

Compromises perhaps had to be made to keep within budget, but if the specs determined that a motor at each end costing less than 50p each was powering these models, just how many would have been so eager to buy them. I wonder what percentage of production now spend their days on sidings or mantlepieces?

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Re: LMS Beyer Garratt at Hattons

Postby Bigmet » Sun May 01, 2016 5:24 pm

But that's the thing; there's folks I know who will confidently tell you that 80%+ of models sold in the UK are destined to never turn a wheel. I have no way of knowing the truth of that, but the size of the collections of unopened boxes of model railway items - almost all locos - that have been coming to auction in recent years does suggest that there may be something in this. Then there's all the collectorising that goes on around model road vehicles, that's all of it aimed at adults who put it on a shelf if they take it out of the box. (Never heard of anyone pushing them around a layout.) It may well be that wes madmen whioc expect the model railway products to actually work well and prform reliably over the long term are a minority.

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Re: LMS Beyer Garratt at Hattons

Postby Tiddles » Sun May 01, 2016 11:41 pm

Bigmet wrote:Hattons definitely had it specced down to a price. Given that they know the UK RTR model railway market well enough to have been the largest retailer 'forever', I am not going to argue with their call. What might it have cost if engineered to be a centre motor shaft drive to both power bogies design? Tricky, but definitely possible; and that of course would be as good as any centre motor diesel or electric type, as the old Rivarossi steam articulateds have been demonstrating for over forty years.

I would hope for the owners that an aftermarket opportunity is spotted by one of the motor and drive line specialists, and in time a re-motor kit emerges.


Have to agree.

You only need to look at the Bachmann articulateds with 5 pol center mount flywheel motors to see that.

But these models are expected to pull realistic length trains and they are not silly money. Also threy are not limited productions despite the fact that not many of the real ones where made and had a limited working life due to the advancement in diesel technology.
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Re: LMS Beyer Garratt at Hattons

Postby GWR_fan » Mon May 02, 2016 1:01 am

Bigmet wrote:............................ What might it have cost if engineered to be a centre motor shaft drive to both power bogies design? Tricky, but definitely possible; and that of course would be as good as any centre motor diesel or electric type, as the old Rivarossi steam articulateds have been demonstrating for over forty years.....


Bigmet,

the only 'tricky' part in the design is aligning the power truck and universal joint pivot points in the same vertical plane. The articulated is just an oversize bogie drive locomotive. There could be a cosmetic issue disguising the front driveshaft from view, but nothing is impossible these days.

In garden scale, locomotives with multiple motors have proven troublesome when liberties are taken with the quality of chosen parts and you have two drives not in sympathy with each other. A centre drive ensures all is in harmony.

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Re: LMS Beyer Garratt at Hattons

Postby Bigmet » Mon May 02, 2016 9:36 am

Right with you there GWR_fan. (If taking the twin or multiple motored path then reversible drives - no worm gear - are the simplest plan for better reliability, as any slight speed differences are more readily taken up in the drive lines.)

When we get a RTR model of the first and greatest UK Garratt, the wonderful U1, hopefully it will have a motor in the boiler section, geared to drive a lay shaft beneath the motor concealed in the bridge frame; with this shaft connected by UJ's to drive points on the inside ends of the power bogies.

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Re: LMS Beyer Garratt at Hattons

Postby D605Eagle » Thu Nov 17, 2016 10:44 pm

Mine has disgraced itself. Its only run a scale 100 odd miles if that and the valve gear fell to bits and jammed everything up. It seems to be a push fit construction, not really very inspiring in confidence.


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