Wheel Flange or Not

[Eastsidepilot]

Thought this might be of interest...

Col.

 

[76043]

Was that how it was done on a 9F? I've no idea.
Tony

 

[Eastsidepilot]

Was that how it was done on a 9F? I've no idea.
Tony

Yes, it enabled it to traverse tighter radius curves than if it had all flanged wheels. The LNWR did it on the 0-8-0 'A' class loco's and I assume the other 0-8-0 class's.
I can't be specific but I believe that sometimes flanges are are turned to different widths on loco wheel sets also to give clearance.

 

[76043]

I was really intrigued by the video showing that the back to back dimension is less than a flanged wheelset and the tyre width being more than the flanged wheel, so did wonder if that was UK practise.
Tony

 

[Mike W]

The LNWR did it on the 0-8-0 'A' class loco's and I assume the other 0-8-0 class's.

The first LNWR class A 0-8-0s were fully flanged, but after the first batch (20?) they went to flangless on the third pair and all subsequent engines were flangeless. Sorry, I have no idea about the width or the profile but since one is preserved that information must be known.

Mike

 

[mickoo]

WD 2-10-0 and 9F both have flangeless middle wheels, both have wider tyres at 5¾" not sure what a regular tyre width is?

 

[Lancastrian]

Some dimensions I have.

L&YR 0-8-0 Wheels.

Tyre Width, 5 1/2 inches.
Tyre Depth, wheel to bottom of flange, 4 1/8th.

Leading and Trailing wheel flanges, 9/16ths radius.
Leading and Trailing wheel flange to tread, 5/8ths radius.

Driving and Intermediate wheel flanges, 3/8ths radius.
Driving and Intermediate wheel flange to tread, 3/4ths radius.

L&YR A Class 0-6-0 Wheels

Basically, as per the 0-8-0's above.


LNWR G2 Class Wheels (can also be used on G [non-superheated], G1 [superheated] and 0-8-2T & 0-8-4T [non-superheated] when fitted with G2 Class crank pins and coupling rods)

Tyre Width, 5 3/4 inches.
Leading, Driving and Trailing wheels, flanges
Intermediate wheels, no flanges




Ian

 

[Eastsidepilot]

I would also note that there is no coning on a flangeless wheel and they are bevelled both sides, not always done on model wheels.

 

[jc2001]

I find it understandable that some wheels can be flangeless on a coupled wheel set as long as there are two axles with flanges. What I still don't understand is on the Bosnian Klose 2-4-2s BOTH coupled driving wheel sets were flangeless. I think somehow the tender controlled the curve the loco and wheel sets adopted so the coupled wheels stayed on the rails.
John

 

[Osgood]

Too close to the end of the day to get my head around this but Klose looks to have developed a fascinating self-steering axle system - that required coupling rods to change length when going round bends.....::

Klose System Locomotives.

Douglas Self, steam engines, Klose

www.douglas-self.com

So I guess that so long as the outer (2-x-2) axles had flanged wheels the inner, driving, wheels steered themselves a path that kept them centred on the rail........

 

[jc2001]

Thanks for posting the link. From what I understand is on the 2-4-2s (not shown in the linked page) only the leading and trailing wheels flexed and yes they must have had flanges.