teletougos

I mean their marketing !! My inbox is cluttered with the stuff.

I've never bought a Hornby product in my life, but as an unbiased observer who has to keep an eye on their emails since I've got a 66 on order, I have noticed that they don't half go on with a lot of rubbish.

I need to get batteries for the caliper. Didn't find any at Wilko!

I can't see anything in that thread that calls the wheels themselves into question tho? More to do with chassis being too rigid etc

Dapol Pannier is about 32mm wheelbase between axles. Roughly 15+17mm When i buy more batteries for my caliper I'll edit with something more precise 9.2mm wheels. Really nice profile and flanges. If Hornby had equipped their new TT steam with wheels like that, TT120 would REALLY be cooking with gas

A couple of views. Pretty standard EMD nose. Less common view at the rear.

I'll update you on the Pannier chassis. One thing people don't know about those NOHAB trucks & EMD Dash 2 diesels is that by lengthening the rear axle spacing on the NOHAB truck by a scale 4" (not impossible given the BTTB truck design), it gives the correct wheelbase truck for an SD40-2, SD38-2 and so on. The EMD HT-C truck used under all these locos is asymmetrical, tho many models do not replicate it : 6' 7 5/8" + 6' 11 3/4"

Yeah you can see the back part of the photo is kind of warped.

I mistakenly ordered a Dapol N Pannier chassis (not arrived yet) and I have reason to think this will be 30mm or so - advantage may be that it has biggish wheels suited to TT. TT BR119 C-C or the 'Ludmilla' which is done by Piko - fairly standard DB diesellok truck wheelbase. 1800 +1800mm = 15+15mm https://www.conrad.com/p/piko-tt-47347-tt-diesel-loc-br-119-of-dr-2358453 Unsure of the Tillig ones. BTTB 'Ludmilla' - no - uses a longer 33mm truck as under the NOHAB Other choices, LifeLike N PA1 15.2 +15.2mm (not the ConCor PA - that has a shorty 28.2mm truck wheelbase.) And there's a long Bach-Farish N C-C diesel with 30mm (15+15mm) truck wb. I bought as a chassis - don't know what it came from.

Not a shovel nose, it's just the standard EMD 'bulldog' nose introduced by the FT / FS series locomotives (tho 'bulldog' may be the Aussie term for it.) It is a former Northern Pacific unit from an A-B set, bought by Sonora Baja-California probably around 1970. Some of the late-surviving NP FTs actually made it into the Burlington Northen era . . . at least for a few days.

MTB SW1200 has 8' wheelbase trucks and is 22' between truck centres. Model is in this case very accurate to prototype.

An 8'6" wheelbase in TT is matched by the N Roco E44 but such wheelbases in N are a rarity. That's 21.5mm and it is going to be a pretty long wheelbase in N. **** 10' TT wheelbase. 25mm to all intents and purposes . Don't know anything in N close, except the ancient Bachmann N 'blinky-light' SD40-2, if you can find one working. Or the later Spectrum version. All prone to Bachmann's legendary white gear splitting, and pre-DCC era See comments below 10'6" TT wheel base : 10.5 x 2.54mm = 26.67mm The truck wheelbase for N scale American SD7/9/18, SD35, SD40, SD45 and probably SD40-2 etc. Could be handy if you can drop out the centre axle. But you're going to need bigger wheels, on stub axles, with the axle milled to a variety of diameters depending on the N donor mech. And watch the bigger wheels don't touch the bottom of the chassis. Also it is complicated by the brass axlepoint pickups used in N.

Roco E44 electric has trucks of the right wheelbase : 21.6mm From memory, would not be too hard to regauge truck as I think has a 1.5mm axle, existing wheels and gear not hard to remove. Could use 8.9mm wheels scrounged off a Poole Farish 08 / J94 or Parkside Dundas 9mm which are both for a 1.5mm axle. (3mm Society 9.2mm wheels look better, but are plastic centred - pickup an issue?) Sorry can't help on wheelbases (edit:) that would suit British equipment, not my area - if you know the wheelbase you are looking for, post it and I'll try to see if I know a match

Yeah, I take the point that compliance with Tillig or NEM standards and those wide steamroller wheels has lost one of the advantages that might have been had over N. It's a fact. Complicates its chances of taking advantage of the better scale/gauge ratio. Until the after-market wheel producers catches up, that'll surely take many years.

Pretty much as in the title, front axle to rear axle. All I can glean is that wheelbases for the real thing varied from slightly under 15' to a bit over.

That's pretty reasonable. I wonder if there is a standard kind of place folk go to, that is of good quality. Something like i-materialise but in the UK would be ideal.

For diesels and electrics, yes. http://www.clag.org.uk/wheelbase.html

Yeah but that was a kind of silly era all over. I mean, I even heard someone say Mo Farah was a nice person.

How many wagons would you think a B-B loco with single axle drive on the outer axle of the trucks would be able to haul? Is there a ratio that would apply vs a loco where both axles on the trucks are powered? Any tracking or other problems? Does it place any stress on the motor? Are bogies more likely to misbehave? I've got an N mech that lines up perfectly for something in TT where I had considered this. It would have to haul a max of 5-6 bogie wagons on a shunting plank or small layout, not at high speed.

Some N chassis can be regauged for TT but any operation like that is difficult with steam as obviously the cylinders, drive rod assemblies need to be moved out as well, and the N spoked wheels may not look right for TT. With some DC-era N diesels, it's easier due to the way split axles were assembled. However, you need new wheels with stub axles, they tend to align only to rather oddball locomotives & in many cases require switching trucks between mechanisms or flipping them. If I remember it right, one lined up okay for a NSWGR 80 class in TT.

Thank you for your help. Very handy to know!

Thank you. Did second gen have the motor as an integral part of the bogie like first generation?

The curious bogie wheelbase is due to the NOHABs origin. They were an adaptation of the Australian GM affiliate's double-ended ML2 C-C model. The truck is 13'3", four inches shorter than a standard American GM three axle truck.

Thank you. Yes, it's hard to get one of the 3rd generation 44 tonners - where you can narrow the truck gauge, because no-one ever differentiates them from the earlier versions, where a motor is built into the truck.

Wondering what the diameter is on the wheels of these models. Think the prototypes are supposed to have 33" - 44 ton and 36" for the 70 ton. But unsure about the models.