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I like the diesels Sunset 3rd rail is producing (I bought the SP BW SD-9).  My primary reason, I feel their drives are far superior to their competition's. Don't get me wrong, I've made a few bucks over the years replacing China drives but that's not the way to bring in new modelers to P:48. Self started thinking, if we could produce replacement axles/wheels (P:48) that could be swapped out with the original factory Ow5 (that's not an insult, I model Ow5) modelers could make their models capable of running on P:48 track. Changing nothing else on the models (side frames stay where they are) would keep everything fairly simple and the model(s) could be changed back to Ow5.

Now, I had the wheels and axle material but bronze gears & bearings would probably be too expensive to make the whole thing viable. I decided to ask Scott Mann what he thought of my idea and asked if he had any extra gears and bearings. He said he didn't have the quantity I wanted in stock but like my idea. He then offered to have new gears, bearings, and thrust washers made by his builder. I jumped on the offer and he came through for me. Actually, the first batch were made to the specs for models previously produced. These gears measured 10.5mm in diameter and we needed the 10.1mm version.

About a week ago I took delivery of the correct gears. Since then I've assembled fifty, or so, axle sets. Just to make sure all of this was going to work I converted my SD-9 and it runs just as nice as it did before my modifications.

These sets will work in any of the current and future Sunset 3rd Rail diesels. This will include the second run of the EMD F-7s, the new F-3s, E5/6, RI Rocket, the PA/PB, and the SD40-2 (if Scott gets enough reservations). The larger (10.5mm) sets will work in the recent runs of E7, FL9, FT, FP7, F7 (1st run).

Oh yeah, the reservations for the SD-40-2 are way down. If you're interested in getting one (or more) and using these conversion kits I would recommend getting your reservation in.

Now the purest in P:48 may not approve but, to me, it allows people to get into P:48 and try it out. If they want out or want to sell their models they can switch them back to factory original.

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A big shout out to Scott for allowing me to do this and for helping me with the critical parts.

Jay

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Rob,

When I first approached Scott about all of this he mentioned narrowed bolsters.  Depending on what people want we may do it.  In my mind, this would require standardization of the the bolster design.  In other words, a two axle truck has one design for all models and a three axle another.  This may not even be possible with the various trucks being produced.  Keep in mind, when I say standard design I don't mean the bolster for 3r & 2r would be the same width as the narrowed P:48 bolster.  I'm saying everything about the P:48 would be the same except the width.

Jay

Jay, I agree with Rob.  This move by you and Scott is VERY beneficial to the O scale community at large as it makes trying out P:48 easier than ever.  I'll definitely take a set of these P:48 axles for my E8, and eventually for Scott's upcoming PA's, E6's and F3's!!

Thank you for coming up with this approach and working directly with Scott. 

...gregg

Jay C posted:

Rob,

When I first approached Scott about all of this he mentioned narrowed bolsters.  Depending on what people want we may do it.  In my mind, this would require standardization of the the bolster design.  In other words, a two axle truck has one design for all models and a three axle another.  This may not even be possible with the various trucks being produced.  Keep in mind, when I say standard design I don't mean the bolster for 3r & 2r would be the same width as the narrowed P:48 bolster.  I'm saying everything about the P:48 would be the same except the width.

Jay

Jay I have to admit when I first saw your post and decided to reply, the bolster statement was an afterthought.   I know little about Sunset's designs but I was pretty certain that while the wheelsets may be somewhat standard that drives and bolsters have evolved over the years and may not be.   Thus your caveat to "accept" just the wheelset.   

Just the fact that this is getting "traction" is a great thing.   I have zero basis to speak as to how well of a seller these would be.

As for me, after years of trying to assemble a viable PRR steam roster I'm running out of time and patience in finding even close to accurate models for my (lines east) branch to start with.   I might just have to move into the the diesel era and start with F3's and FA's (of which I sure wish Scott would do).  Easily available P:48 would make this a done deal. 

Anyway, I don't suspect that my wants are going to be what moves the project.   It's the modern era boys (and girls) that are going to be the ones that want this the most.

Last edited by Rule292

Rob,

Thank you for the input.  I believe Scott is bringing in an F-3.  Is he doing a PRR?  I don't know.  I'll check the website.

I'm a transition era modeler so late steam and early diesel.  Looks to me like Scott is doing more early rather than late.  The latest is the SD-40-2 and it may not happen if they don't get enough reservations.

Jay

They are defiantly not 1:1 but I'm really not sure what they are.  They come directly from the factory so whatever they were when they left the assembly line is what they'll remain.  Next time I turn one upside down I'll rotate the input shaft to see what the reduction is on the axle.  Between the motor and the output shaft going to the trucks will probably remain a mystery for a while because we don't have to take the shell off or disassemble any of the rest of the loco.

Jay

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