Driver wheels profile

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makinsmoke
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Re: Driver wheels profile

Post by makinsmoke »

Assuming the rail profile is the same in various sizes, then the wheel profile should also be the same.

It’s the rail the wheel must match.
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Bill Shields
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Re: Driver wheels profile

Post by Bill Shields »

Harold_V wrote: Mon Sep 26, 2022 4:19 am
Bill Shields wrote: Sun Sep 25, 2022 4:31 pm yes...i am sure...profile is the same for 1.6 / 1.5

if someone had wide and square flanges, they would not be correct for either 1.5 or 1.6
Ok, now I get it. When reading your comment it was easy to think that the profile wasn't important, not that the difference between 1.5" & 1.6" didn't matter. I fully agree with that, as the track on which they run is the same.

H
as usual...i knew that I thought I was saying but was not clearly stating what I wanted others to read. :mrgreen:
Too many things going on to bother listing them.
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Bill Shields
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Re: Driver wheels profile

Post by Bill Shields »

makinsmoke wrote: Mon Sep 26, 2022 12:40 pm Assuming the rail profile is the same in various sizes, then the wheel profile should also be the same.

It’s the rail the wheel must match.
this is not necessarily true - unless you are restricting comment is referring only to angles and internal fillets.....

it is not just the rail but the other parts of the track that have to accommodate the flange height, flange width and back to back dimensions that have to be correct.

I have a 2.5" GAUGE loco that runs on the same RAIL as the 4-3/4" GAUGE RIDING CAR..but the flange dimensions (width and height) are very different to accommodate guides, frogs, etc....
Too many things going on to bother listing them.
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cbrew
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Re: Driver wheels profile

Post by cbrew »

these are the parameters i use when i machine wheels, I likely have over 100 wheels under my belt,
1) back to back. 7.120 to 7.125
2) 7.45 to 7.5 at the top of the fillet
3) ~10 degree taper on front and back of the flange
4) cut a radius to join the front and rear taper.
5) flange height of .150

some notes, #3, the front tape may need to be adjusted depending on wheel diameter and tightest radii this wheel will see.
I do not have issues with tracking following these parameters.
If it is not live steam. its not worth it.
Emfinger
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Re: Driver wheels profile

Post by Emfinger »

Wow, sorry I don't understand any of that.
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Greg_Lewis
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Re: Driver wheels profile

Post by Greg_Lewis »

Emfinger:
Here is a pdf of the IBLS wheel profile for 7.5 gauge, and a link to the page where all the various profiles are listed. This shows the tread and flange profile for each wheel as well as the relationship between the two wheels on the axle.

IBLS Wheel Standard 75VS15 Gauge.pdf
(53.7 KiB) Downloaded 126 times

http://ibls.org/mediawiki/index.php?tit ... l_Standard
Greg Lewis, Prop.
Eyeball Engineering — Home of the dull toolbit.
Our motto: "That looks about right."
Celebrating 35 years of turning perfectly good metal into bits of useless scrap.
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Bill Shields
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Re: Driver wheels profile

Post by Bill Shields »

cbrew wrote: Mon Sep 26, 2022 1:12 pm these are the parameters i use when i machine wheels, I likely have over 100 wheels under my belt,
1) back to back. 7.120 to 7.125
2) 7.45 to 7.5 at the top of the fillet
3) ~10 degree taper on front and back of the flange
4) cut a radius to join the front and rear taper.
5) flange height of .150

some notes, #3, the front tape may need to be adjusted depending on wheel diameter and tightest radii this wheel will see.
I do not have issues with tracking following these parameters.
use them for dive weights? :mrgreen:
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Emfinger
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Re: Driver wheels profile

Post by Emfinger »

Want to make it 104 ?
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cbrew
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Re: Driver wheels profile

Post by cbrew »

Emfinger wrote: Mon Sep 26, 2022 5:16 pm Want to make it 104 ?
unfortunately, I am so far behind on other projects, not at this time,
so i have to ask, why are you looking at the wheels, is there a tracking issue?
If it is not live steam. its not worth it.
Andypullen
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Re: Driver wheels profile

Post by Andypullen »

I have 700+ wheels under my belt. PM me if you want.

I recently added a CNC lathe to my shop and tire profiles are a snap on it.

Andy Pullen
Clausing 10x24, Sheldon 12" shaper, ProtoTrak AGE-2 control cnc on a BP clone, Reed Prentice 14" x 30", Sanford MG 610 surface grinder, Kalamazoo 610 bandsaw, Hardinge HSL speed lathe, Hardinge HC chucker, Kearney and Trecker #2K plain horizontal mill, Haas TL-1 lathe.
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Bill Shields
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Re: Driver wheels profile

Post by Bill Shields »

Andy haas the way to do it :mrgreen:
Too many things going on to bother listing them.
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Harold_V
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Re: Driver wheels profile

Post by Harold_V »

Bill Shields wrote: Mon Sep 26, 2022 6:28 pm Andy haas the way to do it :mrgreen:
Good one, Bill :!:

Being from the old school of machining, I have a hydraulic duplicator (poor man's CNC) on my Graziano. It was purchased many years ago to fulfill a government contract for more than 600 main landing gear spacers for the C-130 aircraft. A 5/8" X 45° chamfer on the ID plus a gentle taper terminating in a large radius (on the OD) were required, each of which pretty much mandating the use of a machine capable of contouring. This was long before the advent of CNC's. They had a couple tight tolerances, each handled in stride by the duplicator.

While I have yet to use it for profiling a wheel, that's precisely what I'll do if I happen to get to the point where I have need. Once set up, it should be just as fast as a CNC.

H
Wise people talk because they have something to say. Fools talk because they have to say something.
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