Author Topic: N Kitbashing the NWSL Puller - and saving my sanity!  (Read 2813 times)

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u18b

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N Kitbashing the NWSL Puller - and saving my sanity!
« on: September 02, 2017, 12:02:34 PM »
+7
A tool designed to remove shafts and objects off of shafts.

I like the NorthWest Short Line Puller.   :?

I HATE the NWSL Puller.    :x

Here is what you get in the box.




The problem is several fold.

1.  The tips on those screws are larger than 1.5 mm.  But most of the shafts I work with in N are 1.5mm and sometimes 1mm.  So you can't get the tip INTO the worm or flywheel.

2.  The stock tips are small.  But your shaft is small.  And a small shaft pushing on a smaller shaft.... when you can't hold the thing because of all the parts........ something walks sideways and it all pops off.  AHHHHHHHHH!  (especially if my shaft is now slightly damaged).

3.  The gap in the puller frame is just too big for many N scale applications.  Unfortunately,  I DO need a gap that big when trying to get a flywheel off a motor since the motor often sits in the gap.   But that is the ONLY time that gap is needed.  The rest of the time it is unhelpful.  NWSL makes a Puller 2 with a smaller gap.   Without mods, you almost need 2 Pullers- one for motors and flywheels, and a Puller 2 for worm shafts.

4.  The V-shaped gap in the steel plate is too wide for most N scale applications.  Our shafts are tiny.   And that big/unneeded gap  makes the plate weaker than it needs to be.  I've actually had them bend in tough situations.


As for the tiny shafts in N scale, NWSL has made an adapter that is SUPPOSED to help.  I've never used it, but it looks like one MORE thing to hold on to in what can be a complex set-up.   sigh.   :facepalm:   I have not even had a desire to try it out.




All of this was so frustrating and came to a head when I damaged the threads on my Puller.
So I needed to buy another.

And some time after.... that's when the heavens parted and an idea came into my head.
Since I now had 2 sets of everything, why not start making my own adaptations?
And I found my hardware store carries these screws- so I bought a few more.

So here is what I have now.....



Left to right.....

Stock fatter tip.

Stock slimmer tip (I almost never use now).  Mainly used for steam wheels.

Kitbashed fatter tip- so that it now has a tip of about .7mm and can go inside a 1mm hole.

Kitbashed slimmer tip that has been tapered so that the end 1/4 can go inside a 1.5 mm hole.  I use this a lot since most N scale shafts are 1.5mm

A purchased screw unmodified.  Totally flat surface.  Used for one step in the process- to get shafts exactly equal with the edge of the worm.

A purchased screw in which I drilled an indentation about 1.7mm.  So a 1.5 mm shaft will go in.  Doesn't have to be deep.  THIS is the lifesaver.

I also  took my bent plate (flattened out) and drilled two holes in it.
The big hole is about 1.7mm for a typical N scale shaft.
The smaller hole is about 1.2 mm for a 1 mm shaft.
This has also been a life-saving step.




NOW I have a setup I can use.

For the TP56, I have a worm on a 1mm shaft I must remove.

I place the worm and shaft into the small drilled hole in the plate and use the flat screw with the notch.
The smaller screw hole in the plate helps hold the worm and I don't have to jiggle with that steel plate to hold it all together.
The notch in the screw HOLDS the dang thing in place and keeps everything from moving sideways.  No more walking shafts.

As you can see, once engaged, I don't even have to hold this thing.  It holds itself.
No more needing 3 or 4 hands!    :tommann:




I go until the screw with the notch touches the worm.  That's as far as this one will go.  But easy as pie to get to here.




I then use the stock purchased flat screw to go the rest of the way.



I then use my kitbashed screw with the micro tip to push the worm shaft and go INTO the worm hole without damaging anything.  This is really the only tricky step since I don't want to gouge the brass. Usually this is all the distance I need to get the worm off.  If it still bites the shaft I can use another tool to tap the shaft out.




No damage.
Easy as pie.

My sanity is restored.




And by the way.  Obviously I shaped those tips with a motor tool and ceramic cut off disc.

« Last Edit: September 02, 2017, 06:36:56 PM by u18b »
Ron Bearden
CSX N scale Archivist
http://u18b.com

"All get what they want-- not all like what they get."  Aslan the Lion in the Chronicles of Narnia by C.S.Lewis.

nickelplate759

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Re: N Kitbashing the NWSL Puller - and saving my sanity!
« Reply #1 on: September 02, 2017, 12:10:52 PM »
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Brilliant!  Yes, you do need at least 3 hands to use the thing as it comes from NWSL, and yes that's frustrating.

Thanks for documenting this improvement.
George
NKPH&TS #3628

I'm sorry Dave, I'm afraid I can't do that.

C855B

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Re: N Kitbashing the NWSL Puller - and saving my sanity!
« Reply #2 on: September 02, 2017, 12:25:41 PM »
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Great mods, Ron.

The problems aren't unique to the NWSL puller. In a gazillion years of working on cars, "full size" pullers have similar issues, too, especially the needing three or four hands. I've rounded-off my share of studs and bolts, and smashed threads... can you say "ball joints"?... trying to get a generic puller to do the job. Purpose-designed pullers like steering wheel pullers, no problem, but keeping everything in place and not slipping with generic pullers especially in a tight space is enormously frustrating.
...mike

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craigolio1

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Re: N Kitbashing the NWSL Puller - and saving my sanity!
« Reply #3 on: September 02, 2017, 12:33:00 PM »
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Excellent modifications!!

Craig

bbussey

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Re: N Kitbashing the NWSL Puller - and saving my sanity!
« Reply #4 on: September 02, 2017, 05:52:11 PM »
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Outstanding.
Bryan Busséy
NHRHTA #2246
NSE #1117
www.bbussey.net


JanesCustomTrain

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Re: N Kitbashing the NWSL Puller - and saving my sanity!
« Reply #5 on: September 02, 2017, 07:12:52 PM »
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Flabbergasting.

Jane
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And when I die I expect to find Him laughing...

mmagliaro

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Re: N Kitbashing the NWSL Puller - and saving my sanity!
« Reply #6 on: September 03, 2017, 12:12:50 AM »
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Ron,
I have the adapter set, and it does help with the smaller shaft sizes.

But like you, I have an assortment of home-modified pusher bolts that I turned on the ends of 10-24 bolts.
Do try to get grade 8 10-24 bolts,  Conventional soft-steel ones are not strong enough and after you turn down to the small
push-pin sizes, they tend to bend too easily.

I also have an assortment of V plates I made from 1" x 2" pieces of stainless steel in varying thicknesses.
Using a diamond Dremel cut-off disk, I could cut very thin slits and V shapes into the stainless plates.
Since they are stainless, they are much stronger than the stock V plate that comes with the puller.  And that allows me to use thinner plates to sneak in behind worms and wheels where there isn't enough space for the stock plate.

A nearby sheet metal shop cut me the 1" x 2" stainless pieces in a variety of thicknesses.

daniel_leavitt2000

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Re: N Kitbashing the NWSL Puller - and saving my sanity!
« Reply #7 on: September 03, 2017, 03:09:18 PM »
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Hmm....

Now I have an idea.
1. Buy cheap get puller off eBay for the hollow shaft threaded inside and out.
2. Bolt to C channel stock.
3. Cut down my own pusher bolts as seen here.
4. Avoid NWSL insane price.

Now if only I could find where I put my Chopper II.
There's a shyness found in reason
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You seem to feel abysmal take it
Then you're careful grace for sure
Kinda like the way you're breathing
Kinda like the way you keep looking away

mmagliaro

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Re: N Kitbashing the NWSL Puller - and saving my sanity!
« Reply #8 on: September 04, 2017, 01:37:36 AM »
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Hmm....

Now I have an idea.
1. Buy cheap get puller off eBay for the hollow shaft threaded inside and out.
2. Bolt to C channel stock.
3. Cut down my own pusher bolts as seen here.
4. Avoid NWSL insane price.

Now if only I could find where I put my Chopper II.

If you have a way to turn down and make the pusher bolts, yes, this tool can be home-made.
Turning grade 8 bolts ain't easy, but they do cut.  And you need a mill or a lathe to do it.
You might try it by chucking the bolt in a Dremel and having at it with a diamond file, but I don't know if you could get the little nub to come out reasonably straight and centered. 

SandyEggoJake

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Re: N Kitbashing the NWSL Puller - and saving my sanity!
« Reply #9 on: September 12, 2017, 01:07:01 PM »
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Sweet!  I've got two hundred Z scale 33" wheels I need to strip off stock axels and then press on to captured stub axels.  So I see a set of custom plates and pins in my near future.  Thanks for the howto!

-J 

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Re: N Kitbashing the NWSL Puller - and saving my sanity!
« Reply #10 on: September 12, 2017, 04:26:08 PM »
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Sweet!  I've got two hundred Z scale 33" wheels I need to strip off stock axels and then press on to captured stub axels.  So I see a set of custom plates and pins in my near future.  Thanks for the howto!

-J

Another option (which I use) is to find a miniature arbor press.  Those are often used for assembling electronics items (like connectors) and I found mine an a local electronic surplus store.  They have lots of goodies which can be used in our hobbies. If you have one of those around your area, check it out.

Making a fixture and using the arbor press is much more efficient than using a gear puller, especially for larger quantities of parts being handled.
. . . 42 . . .

SandyEggoJake

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Re: N Kitbashing the NWSL Puller - and saving my sanity!
« Reply #11 on: September 12, 2017, 07:50:44 PM »
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Thx Pete.  That does sound more efficient.