DRIVER PRINT ?????

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Bill Shields
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Re: DRIVER PRINT ?????

Post by Bill Shields »

guess that I must be missing something

lower right hand corner of the drawings it says '4 per loco'

were only 2 axles of the R1 driven???
Too many things going on to bother listing them.
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Greg_Lewis
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Re: DRIVER PRINT ?????

Post by Greg_Lewis »

So how about an explanation of quill drive?
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Bill Shields
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Re: DRIVER PRINT ?????

Post by Bill Shields »

Motor / gears / drive unit all together on the same assembly with the drive wheel.

if you look at the left hand picture, you see two motors with gears.

These small gears drive the larger gear on the wheel (right hand picture)

All of which rotates on the one central bearing (left hand picture).

gets away from the problem of working out gear mesh with a suspension system since the entire drive assembly moves up and down with the wheel with no associated linkage / arms.
Too many things going on to bother listing them.
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Greg_Lewis
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Re: DRIVER PRINT ?????

Post by Greg_Lewis »

Thanks, Bill. Boy, those two motors have to be tuned so they pull the same.

So what's up with the beer cans clamped to the gear in the middle photo?
Greg Lewis, Prop.
Eyeball Engineering — Home of the dull toolbit.
Our motto: "That looks about right."
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Mark Landgraf
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Re: DRIVER PRINT ?????

Post by Mark Landgraf »

Dave

The drawings say there were 4 of these wheels per locomotive. The R-1 has 8 driver wheels. It would appear to have been from a smaller loco with a quill drive.Maybe an O1?

Mark
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Trainman4602
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Re: DRIVER PRINT ?????

Post by Trainman4602 »

Hi Mark

The Pennsy considered any double ended locomotive two locomotive back to back so that would explain that but it should be RR1 right. This is just a guess.

Here is the full print the R1 #4999 is above the title block also a close up of the title block
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Trainman4602
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Re: DRIVER PRINT ?????

Post by Trainman4602 »

Sorry Bill but you are somewhat correct in your explanation

To clear it up

The main axle that the wheels are pressed on does not in any way connect to the quill drive except thru the cups (someone call them hammers) these cups are spring loaded and appear to be made of rubber in fact are steel cups with a vulcanized rubber coating. They are captivated with an internal flange and cannot come out unless you remove the four bolts to repair or change them. I bet no one noticed that the drive wheel has no key. It is not needed because the wheels are not driven from the axle they drive thru the spokes. The cup is allowed to move independently from the driver the motors are rigidly mounted to the engine truck frame. The axles and drivers have their own bearings outward bearings riding in the frame pedestals. The quill is hollow and the axle passes thru it with plenty of space between the axle and the bore of the quill.

If you’re confused read this http://www.steamlocomotive.com/GG1/quill.php
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Trainman4602
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Re: DRIVER PRINT ?????

Post by Trainman4602 »

If anyone is wondering why I posted this topic, because.

While looking at face book on some of the railroad forums I noticed someone has a GG1 site it is called 1 inch scale GG1.

So I looked at it. The guy I have no name is building a 1inch GG1 using prints that he acquired from someone. Redrawing them with Fusion 360 and printing them out in plastic. When I got to the driver pictures I said OH NO not again. He is using the R1 print, thinks like a lot of people who have this similar prints from somewhere, that it is a GG1 driver print. I explained to him that he is using the wrong print and that the GG1 had 57 inch wheels and he is using the R1 print that is a 62 inch driver.

He answered that “I should check my sources” well you know that didn’t sit well with me. I explained everything about the R1 v. the GG1 and he came back and said “well I’ll use my print” Well OK make it wrong. I’ll make it right. So I got out my complete set of GG1 prints and draw up the correct driver center with the tire on. I drew the drive cups as well.

Here is just the wheel center with tire. The correct 6 spoke wheel.
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Greg_Lewis
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Re: DRIVER PRINT ?????

Post by Greg_Lewis »

All this looks overly complicated. What's the thinking behind this method?
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Eyeball Engineering — Home of the dull toolbit.
Our motto: "That looks about right."
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Trainman4602
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Re: DRIVER PRINT ?????

Post by Trainman4602 »

More flexibility.
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8thscale
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Re: DRIVER PRINT ?????

Post by 8thscale »

An an FYI, here's the project.
https://www.facebook.com/oneinchgg1/

This was attributed to be GG1 quite some time ago when they were posted here ...
viewtopic.php?f=33&t=93514&p=250320&hil ... er#p251008
ccvstmr
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Re: DRIVER PRINT ?????

Post by ccvstmr »

Greg_Lewis wrote: Sun Mar 11, 2018 2:22 pm Thanks, Bill. Boy, those two motors have to be tuned so they pull the same.
Greg...one motor forward, one motor reverse. 12 motors total...only half used at any time the G was in motion. Don't know how the motors were wired, but the cab stand had (3) large edgewise current meters mounted next to one another. Carl B.
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