Heljan Deltic Discussion

mickoo

mickoo

Western Thunderer
Jordan LOL, yes, in that context then none of it matters a jot, but if your modelling a depot then I think it matters a 'great' deal as the locomotives are the star attraction and have to compensate for their lack of movement by depth of detail, the exact same argument exists between G1 live steamers and 1/32 indoor modellers. Note the level of detail attained in Worcester Road 1:32, most of which would be superfluous in a garden layout context :p Again compromise in play.
 
mickoo

mickoo

Western Thunderer
Well, with much assistance from Richard and his trusty digital calipers a conclusion has been reached for me.

The Heljan Deltic measures :-

At the mid body width 61.4mm, 1:1 = 61.6mm, close enough for me
At nose width 53.9mm, 1:1 = 53.8mm, close enough for me
At body sole bar 56mm, 1:1 = 53.8mm, So, an error of 2.2mm overall / 1.1mm per side or an error of 4.25% / 2.12% per side, close enough for me

This of course assumes that the solebar remains the same width as the nose through out its length which most data does, even so we're talking a lateral discrepancy or deviation of 1.88" per side in 1:1 scale and having measured several 1:1 Class 66 that's not to be sniffed at.

Kindest
 
alcazar

alcazar

Guest
Cheap for what you get? Yes, undoubtedly, although time and Dapol may show that to be not as true as we think at the moment.........

But would it have cost them any more to get it RIGHT: correct tumblehome, correct nose profile and nose grille the right size/position?

Nope........

So why didn't they? Because people will still pay half a thousand £ for a sub-standard model, simple.

PS: I accept that it's NEARLY there, just as the figures above show, but why isn't it RIGHT? There IS a see-able tumblehome, why not model it? Answer? See above......
 
tomstaf

tomstaf

Western Thunderer
mickoo said:
Well, with much assistance from Richard and his trusty digital calipers a conclusion has been reached for me.

The Heljan Deltic measures :-

At the mid body width 61.4mm, 1:1 = 61.6mm, close enough for me
At nose width 53.9mm, 1:1 = 53.8mm, close enough for me
At body sole bar 56mm, 1:1 = 53.8mm, So, an error of 2.2mm overall / 1.1mm per side or an error of 4.25% / 2.12% per side, close enough for me

This of course assumes that the solebar remains the same width as the nose through out its length which most data does, even so we're talking a lateral discrepancy or deviation of 1.88" per side in 1:1 scale and having measured several 1:1 Class 66 that's not to be sniffed at.

Kindest
Click to expand...


So I'll expect to see your best filing in due course Mike as well as incorporating Richard's mods too;) hehehe

Cheers

Tom
 
mickoo

mickoo

Western Thunderer
From the esteemed Mr Daniels site, it shows quite clearly that there is a distinct tumblehome but not accurate as everyone has discovered.

http://www.flickr.com/photos/brianews/6284210592/in/set-72157627984986894
http://www.flickr.com/photos/brianews/6164106648/in/set-72157627707854360
http://www.flickr.com/photos/brianews/6163577105/in/set-72157627707854360
http://www.flickr.com/photos/brianews/6164117880/in/set-72157627707854360

And lastly an image that shows less to virtually no tumblehome
http://www.flickr.com/photos/brianews/6283685035/in/set-72157627984986894

How can this be?, same model but clearly looks much more flat sided, I'd humbly suggest that the tumblehome intensity varies with viewing angle.

One further point on the last image, note the lengths to which Mr Daniels is going to upgrade his Deltic, should Heljan have included all that as well? Where does one draw the line, it's personally subjective and really does not need airing in Richards thread.

Tom, we shall see, depends how much 1.1mm niggles me, the rest is a given and with two WT Deltics already, we don't really need another work bench do we? :thumbs: But my funds have cleared and I'm happy to part with £½K, so Tower will have a purchase on Monday.

Kindest
 
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