Crowd funded proposal for EE Gas Turbine 3 in OO

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CasperGriswoldBacon
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Re: Crowd funded proposal for EE Gas Turbine 3 in OO

Postby CasperGriswoldBacon » Sat Apr 03, 2021 8:33 pm

Bigmet wrote:
CasperGriswoldBacon wrote:I have to admit for once i'm a bit jealous of anyone who's got their mitts on one of these. From the review I saw its a lovely loco even with a bit of an iffy front bogie and really looks the part...

I have a second hand report from a friend, who got to see one very recently running on the garden line of a new acquaintance. Everything to like in his opinion, and he is pretty critical. His observation: the track needs to be well laid as the clearance above the bogie frame to the body is pretty much scale, so it won't like any gradient when entering or on a curve, whether that's a small accidental dip or bump in the track or an intended gradient transition.

I am waiting with some interest the GWR 18000 gas turbine that Rails have commissioned from Heljan. That's similarly awkward, with wheeltops inside prominent fixed frames.


yeah from what I saw its a simple (perhaps too simple) screw from the bogie to the frame and to work properly it has to be almost loose. too tight and bad track and the weight will pull the bogie off. Seems pretty easy to bodge a fix though.

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Bufferstop
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Re: Crowd funded proposal for EE Gas Turbine 3 in OO

Postby Bufferstop » Sat Apr 03, 2021 11:36 pm

I solved a similar problem on a Hornby DMU by cutting a square washer of black plastic foam (draft excluder) to fit between the bogie frame and chassis. It placed very little load on the bogie but acted as a horizontal damper, still working ok ten years on.
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Bigmet
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Re: Crowd funded proposal for EE Gas Turbine 3 in OO

Postby Bigmet » Sun Apr 04, 2021 3:37 pm

CasperGriswoldBacon wrote:... from what I saw its a simple (perhaps too simple) screw from the bogie to the frame and to work properly it has to be almost loose. too tight and bad track and the weight will pull the bogie off. Seems pretty easy to bodge a fix though.


Bufferstop wrote:I solved a similar problem on a Hornby DMU by cutting a square washer of black plastic foam (draft excluder) to fit between the bogie frame and chassis. It placed very little load on the bogie but acted as a horizontal damper, still working ok ten years on.


Agree with you both, it's a rare set of RTR OO carrying wheels that won't benefit from some owner intervention: whether this is to prevent fouling of wheels or structure, improve tracking, actually do some work guiding the vehicle into and out of curves, be appropriately spring loaded, whatever.

Bachmann's 'fault on the right side' practise over many years, of putting far too much spring loading on carrying wheelsets is still of benefit to me: the 'harvest' of typically 80% of the original springs still being repurposed onto the all too many carrying wheel arrangements on which no spring is provided.


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