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 Ok, so the thought of having a plain jane MTH roatry was fine when I 1st got it, but after a while of looking at it I got to thinking this piece would lend itself to a fairly easy kitbash conversion to an older steam powered DRG or so type- which I like better anyway. Problem is I'd need decent line drawings to get even close...that or the TLAR approach...not the way I wanted this time.

 Last week at the train show I got what I wanted- a narrow gauge gazette mag with a nicely drawn up multi-view of an RGS #2 rotary and in 1/4" scaled no less-Now we're ready!

So, lets' take measurements 1st to see what we're up against- Measurements are being done up in 1/48th scale via my scale ruler. 

The MTH rotary comes in with these specs;

-body length @ 39' 6"

-body width @ 9' 6" 

-body height @ 10'

The RGS #2 plans come in at these specs;

-body length @ 32' 6"

-body width @ 10'

-body height @ 11'

OK, so knowing the new roof will be totally different the new needed height is no problem since the old roof is getting tossed out...the new needed width of an added scale 6" means I can either skin over the current body for the new doors and windows or just leave it reworked and thinner than actual spec- what's 6" among friends on a semi scale kitbash{you can call that one on your build}. I will most likely re-skin the body after removing all window.hand rail, and anything that sticks out details.

 Body length for the kitbash will need to be shortend...no problem and the last few feet of that will be for the correct tail end with the boiler backhead and side doors...this will yield a far better look than what MTH gave me "and" I'll add a tender after this is done, another thing MTH lacked- and I don't know why. Scronging around for some archbar trucks would add to the right look...if I can find a set I'll do it, otherwise "mine" might run on more modern trucks{for now}.

This kitbash will use the oem MTH rotary fan and drive even though it sits too high off the rails...for realtime use this will make things less troublesome clearance wise...some things have to give I guess.

Now for some pics of what I'm talking about-

 

 

rotary conversion start 001

rotary conversion start 002

rotary conversion start 003

rotary conversion start 004

"This" project was going to officially start after my decalling was done- but since I'm plagued by a rash of tiny bubbles that require many re-applications of solva-set...well....that can be on the back burner while I start this one!

As a side note- this kitbash is a semi-scale project...I will lend my twist on it, but you the readers can tweek as you wish along your building of one, I'm just giving you a show of how the basics are going to be done by me, and in my way{which we all know isn't for everyone since I have been known to paint things up in my favorite railroad that others find wrong to do...I get that...but this is "my" way....}follow along, comment on applications or ideas as you like!

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  • rotary conversion start 001
  • rotary conversion start 002
  • rotary conversion start 003
  • rotary conversion start 004
Last edited by Burlington Route
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1st item up is for me to take apart the MTH rotary and get ready to map out the cuts.

I carefully cut between the window glazing and the body to loosen the glazing glue, that way those are out of the way- parts box!

Now I remove the smoke stack{?}, brake wheel and roof walk w/2 screws...parts box!

This leaves the chassis...if you've never seen the inner workings of the MTH rotary- now you can.

  

rotary dissasembly 001

rotary dissasembly 002

rotary dissasembly 003

I like to put any screws back where they came from so I don't loose them or wonder "did the longer ones go here and the shorter ones there - or was it the other way around?"

 

Time to pull out the tape and make some markings...till next update.

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  • rotary dissasembly 001
  • rotary dissasembly 002
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Thanks Dave.

OK, so here's the 1st hurtle...to use "scale" measurements the trucks are wrong @ 1' too long in wheel base and the chassis will suffer per the 2nd pic as well as looking too short compared to other rail cars...I knew this coming into the build so "semi-scale" was the plan of attack. Builds are fine when everything on your track is all the same scale or gauge...which mine, as well as others, aren't always. This is after all, a narrow gauge rotary being built on a standard gauge chassis...things won't easily jive...I want good proportions when I'm done and actual scale will be tossed out the exit chute of this running car.

 

 

rotary body and chassis 001

rotary body and chassis 002

I'm looking at the same rear body angle being farther back from where it is now with the top of that angle being at the rear of the current top of the body...one would get more usable length to work with, better overall proportions compared to other stock and less trouble with truck position with this. The rear truck will have to be moved forward to closely mimic the real one, but it has to be in proper proportion...as always some compromises have to be made in life.

 

Thoughts on the current lines....?

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  • rotary body and chassis 001
  • rotary body and chassis 002

Had some real life issues come up lately...the wife's ok now, so back to some fun stuff for a change!

Hadn't had a chance to order the needed windows yet, but, I have a better plan on the body size that'll split the difference between scale and what I have....let me get past some bad decals today and tomorrow I'll start back on this project.

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