Opinions, Hornby Thompson B1

Discuss Hornby Model Railway products and related topics here. This includes (Lima, Rivarossi, Jouef, Electrotren).
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Opinions, Hornby Thompson B1

Postby GWR_fan » Fri Jan 31, 2014 11:34 pm

I have had my eye on a couple of B1 Thompsons from Hornby in both early and late BR crest, but for some reason these locomotives seem a little too much of a bargain. I can land these here in Australia for under GBP70.00 (including postage and no VAT discount). Why is the B1 a discounted locomotive model. Were there any issues with it? I believe it came out about a year or two ago. Video reviews give it a big thumbs up.

Any thoughts please?


Tim

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Re: Opinions, Hornby Thompson B1

Postby Bigmet » Sat Feb 01, 2014 9:30 am

Do not hestitate, one of the best locos in their range which has the lot: looks as it should, runs extremely smoothly and pulls well. There is one small 'boo-boo' type error on them, they didn't put all the lamp irons on the tender rear for some reason, (also affects the B17 with the larger GS tender) easy to rectify. Has good detail variation provided for, the fillets in the footplate frame angles added to Scottish shedded locos for example, and smokebox door hinge types.

What acts to hold the price down is the newly rechassied B1 from Bachmann. This body from the old Replica model introduced over thirty years ago is still a class act - it was comfortably the best steam loco ever seen in UK RTR OO when introduced - and can be readily upgraded by replacing dated features like the deeply recessed glazing. (I have both models, and they look well side by side.)

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Re: Opinions, Hornby Thompson B1

Postby GWR_fan » Sat Feb 01, 2014 10:57 am

Many thanks.


Tim

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PeterH
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Re: Opinions, Hornby Thompson B1

Postby PeterH » Thu Feb 06, 2014 2:15 pm

The B1 is a lovely model, I have the LNER black version. The only thing I will say against it is that it is a little underpowered. Whereas my B17 can handle a 10 coach train without a problem at the club test track, the B1 will only be comfortable on a 8 coach train. Although it is a problem easily remedied if you add lead to the right places.
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Bigmet
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Re: Opinions, Hornby Thompson B1

Postby Bigmet » Thu Feb 06, 2014 2:32 pm

I would suggest taking the bogie off the B1 to see if that helps as bogie wheels can be quite draggy, if so lubricate the axles; and also probably easing off the tender pick ups on the B1. The factory setting of pick ups on unpowered wheels varies a lot, from enough pressure to stop smaller wheels turning (had this on one axle on the bogies of all my L1s for example) to barely making contact and thus adding very little drag. If you experimentally exchanged tenders between the B1 and B17 you can verify whether this is the cause before committing to any alteration in pick up wiper settings. The B1 and B17 weigh practically the same (if anything the B1 is slightly heavier) and should perform pretty much alike on the layout.

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Re: Opinions, Hornby Thompson B1

Postby ERMick » Sat Feb 08, 2014 10:40 am

PeterH wrote:Although it is a problem easily remedied if you add lead to the right places.


Apologies for sort of high-jacking this thread, but can I ask what form the lead takes that you use and where you get it from? I'm interested in using this idea but don't know where to look.

Thanks in advance.

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Re: Opinions, Hornby Thompson B1

Postby Bigmet » Sat Feb 08, 2014 11:30 am

I mostly get mine from a friend who just happens to be a specialist roofer, as in leaded roofs mainly on old churches! But you can go to a plumber's or builder's merchant, and buy lead sheet in code 5 and code 7 (the numbers are lbs per square foot, none of your EU nonsense here). If you ask nicely they may well have some traded-in off cuts to sell, the stuff is systematically recycled; so unless they have just had a pick up there will usually be some pieces to hand.

It's a damn sight cheaper and cleaner using sheet lead than any of the shot types, you get a lot more density in the space, and no trouble securing it. I tack it on with a dab of Evostick.

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PeterH
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Re: Opinions, Hornby Thompson B1

Postby PeterH » Sat Feb 08, 2014 6:38 pm

Just a bit of general roofing lead we had lying about. Cut it to size and attach to strategic locations. There is a company who do little balls of lead which you glue into place, can't for the life of me remember who they are - they are useful for tight spots.
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ERMick
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Re: Opinions, Hornby Thompson B1

Postby ERMick » Sat Feb 08, 2014 7:22 pm

Cheers guys.

Found somebody on ebay selling small-ish pieces of code 4 lead sheet at reasonable prices, can't see any code 5 or 7 though.

Will have a look round for plumbers' merchants to see if any can help.

Thanks again,
Mick

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Re: Opinions, Hornby Thompson B1

Postby Lysander » Sat Feb 08, 2014 8:23 pm

Just a warning about the use of lead shot. No, not a diatribe on toxicity, but a warning about fixing it in place by using PVA, the seemingly obvious choice. I can't remember exactly what happens but in time there will be an unpleasant chemical reaction between the two and problems will arise. Perhaps someone else on here can be a little more erudite ?

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Re: Opinions, Hornby Thompson B1

Postby Pennine MC » Sun Feb 09, 2014 12:35 am

Lysander wrote:Just a warning about the use of lead shot. No, not a diatribe on toxicity, but a warning about fixing it in place by using PVA, the seemingly obvious choice. I can't remember exactly what happens but in time there will be an unpleasant chemical reaction between the two and problems will arise.


I've certainly heard adverse reports, but I think like so many things, it may depend on the conditions of use. I have several kitbuilt *open* wagons weighted with Liquid Lead fixed with *dilute* PVA; I can't remember exactly how long for but they've been stored in a garage subject to extremes of temperature for 5 years without any effect that I've noticed. Putting it into a confined space may be a different matter.

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Re: Opinions, Hornby Thompson B1

Postby GWR_fan » Sun Feb 09, 2014 1:28 am

I believe the warning with lead and PVA specificially related to use in confined spaces. The mix would expand to fill the space and then breakout causing damage to the model. If sufficient available space to expand then most likely the end result would not be catastrophic.

On a similar vein, owners of many expensive brass models stored in sealed cases were disheartened to find their models in a mode of self destruction. Gases given off over the years from fluxes used in their construction caused soldered seams to separate.


Tim

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Re: Opinions, Hornby Thompson B1

Postby Pennine MC » Sun Feb 09, 2014 8:40 am

Thanks Tim; now you mention it, expansion was the effect I've seen mentioned.

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Re: Opinions, Hornby Thompson B1

Postby dubdee1000 » Sun Feb 09, 2014 9:01 am

Just to echo Tim, this recently came up on a model aircraft forum where lead shot fixed with PVA caused what you might term explosive decompression in the nose of an airliner where it was being used as a counterbalance. There followed a lengthy discussion about exactly what the chemical reaction was that caused this. (I'll spare you)

Rocket cyano glue can be bought extra runny, though this could be an expensive option and iirc, the `liquid gravity` alternative you can buy is lead free, though again, rather expensive

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Re: Opinions, Hornby Thompson B1

Postby RAF96 » Thu Mar 13, 2014 4:04 pm

Bigmet wrote:I would suggest taking the bogie off the B1 to see if that helps as bogie wheels can be quite draggy, if so lubricate the axles; and also probably easing off the tender pick ups on the B1. The factory setting of pick ups on unpowered wheels varies a lot, from enough pressure to stop smaller wheels turning (had this on one axle on the bogies of all my L1s for example) to barely making contact and thus adding very little drag. If you experimentally exchanged tenders between the B1 and B17 you can verify whether this is the cause before committing to any alteration in pick up wiper settings. The B1 and B17 weigh practically the same (if anything the B1 is slightly heavier) and should perform pretty much alike on the layout.


As I have suffered from floppy bogies on Pacifics I decided to fit a small conical spring to R3000 to control it. Unfortunately this lifted the front drivers just enough to cause wheel slip on the slightest of hills. Adjusting the spring rate fixed the problem but Hornby CC advise looking to see if the fixed tender link promotes the same problem with the rear drivers.
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