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Regauging Bachmann freight trucks from On30 to On2
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 Posted: Fri Jul 22nd, 2011 07:53 pm
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mikesayre
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Per a previous discussion (re: using HO track gauge and 1:35 scale for 2' narrow gauge), I believe that the wheelbase of slightly more than one actual inch (let's say 48" in O scale, which is near correct for the Maine two-footers) would scale out to (let's say) 36" in 1:35. So.......what can you guys tell me about the construction of the Bachmann freight trucks and how what am I getting myself into if I attempt to regauge them for 2' O scale track? The good news is trucks seem to be readily available, and are pretty.

Thanks

Mike

Last edited on Fri Jul 22nd, 2011 07:54 pm by mikesayre

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 Posted: Tue Jul 26th, 2011 09:09 pm
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mikesayre
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3 pair of low-frame Bachmann trucks are in the mail to me. When they get here and I have time to investigate, I'll let you guys know if On2 is feasible (with the amount of work I want to expend) or if I'll be living with On30.....

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 Posted: Wed Jul 27th, 2011 11:35 am
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W C Greene
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Mike-anything is possible or almost. Simply, the On30 wheel sets can be reguaged to On2 if you use a gear puller or press and would still work in the truck frames. To be "correct", the frames would need new bolsters and the wheel sets would need new axles, but maybe you can live with that. You mentioned the dimensions of the wheelbase in 1:35 scale..the road I loosely model had 2 foot gauge trucks with 36" wheelbases so the trucks are right on for what I am doing. Looking at all this, you can either use HO mechanisms and On30 trucks and build a "Maine 2 footer" in On30 and forget the "minor" gauge difference or make lots of work for yourself and adhere to that On2 dream. By the way, are you prepared to hand lay your On2 track or spend major dollars on what little On2 RTR track that is not always available. Stuff to think about. I have built On2 using modified Mantua HO mechanisms and SR&RL trucks (now unavailable) running on hand laid track...but that was back in the 1970's and 1980's and frankly, there was more available then than there is now. Lots of work but if you're up to it then it is a doable thing.
Woodie



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 Posted: Wed Jul 27th, 2011 02:10 pm
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hminky
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You can go to more "exactness" with Scale37 which makes the HO gauge track two feet.

The inside frame is close to the Sandy River #1 in Scale37.



Shown with a 1/35 Tamiaya German

The Bachmann On30 locos don't have enough meat in the mechanism to re-gauge to two foot, go figure.

I did a Scale37 ruler:

http://www.pacificcoastairlinerr.com/37scale.pdf

I know 35 to 37 is nitpicking but nits need to be picked.

Harold

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 Posted: Wed Jul 27th, 2011 05:54 pm
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W C Greene
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 Yes, let's pick some nits. When you find "proper" 1:37 scale figures, automobiles, livestock, or anything else, please let us know. Otherwise, this may be as close as can be gotten with READILY AVAILABLE products. If it's good enough for the NMRA, it's OK by me.

                    Woodie



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 Posted: Wed Jul 27th, 2011 06:58 pm
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hminky
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I knew you were going to do that Woodie:glad:

It really doesn't matter about 37 or 35. Know one will notice the difference even if run together

The Bachmann On30 does make an almost dead-on Scale37 Hinckely Forney #1 if a new cab is added and the flared fuel bunker from the OF is widened.

All the 1/35 stuff works in Scale37. Remember there is no "scale" only what it measures.:Crazy:

Harold

Last edited on Wed Jul 27th, 2011 07:02 pm by hminky

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 Posted: Wed Jul 27th, 2011 09:12 pm
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W C Greene
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Harold-at least I didn't mention radio control!
Back to On2, it does seem that there is less available now than 20 years ago. Back then, Scale Railway Equipment, Grandt Line, and Coronado had On2 "Maine" trucks. PSC had On2 flex track as did a couple of other companies. There were a bunch of On2 wooden car kits and even some "conversion" kits for modiied HO mechanisms as well as very nice On2 brass locos. Maybe the economy had an effect, maybe there are less "modelers" now than then (a distinct possibility), or maybe On2 has just become another "TT" and has fallen by the wayside. I heard that Maine Two Foot Quarterly is gone also. I wonder if there are any On2 guys here on Freerails (besides Mike)...let us know.
Woodie



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 Posted: Wed Jul 27th, 2011 09:31 pm
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mabloodhound
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It's good to see Harold back in the thick of it.

Maine 2FG website seems to still be active http://www.maine2footquarterly.com/



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 Posted: Fri Jul 29th, 2011 02:49 pm
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mikesayre
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I got the On30 trucks today. It will take a bunch of work to make them work for On2, as they are WAY too wide, basically a scale foot (in O) from the jounal lid(s) to the back of the face where the end of the axle slips in. Better off sourcing some of the old stuff, I think.

Thanks for the hint on the Bachmann mechanisms; the Forney, is my current love, is gonna be hard to pass up, esp. for Maine two-foot. Maybe I will stick with the 1/35 - 1/37 angle. I am investigating the Mantua 0-4-0 shifter (another is in the mail) for On2 or similar service.

Will check out the link, thanks.

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