danamarseille@tebee I measured the Kadee #718 wheelsets and they came out 16mm from axel point to axel point.
danamarseille These trucks appear to be too wide for HOn3. See attached photo with Kadee HOn3 wheelsets. These standard HOn3 wheelsets' axels don't even touch the side frames.
I was hoping these would actually hold HOn3 wheelsets.
danamarseille What are the suggested HOn3 wheelsets for these trucks?
danamarseille Success! By filing a little off the F7 power unit and removing part of the vertical section of the F7 adapter, I was able to put the basic model together. After that I gave it a test run and what a cool little locomotive! Even though the wheel base is short, I think I will go with this as it offers the advantage of operating on tighter curves than the GP40 power unit.
This model is a winner!
danamarseille@DaminKeenan I was able to compare the F7 power unit vs an Atlas N scale GP40 power unit. I like the appearance of the GP40 better than F7. The GP40 is of course longer and thus is closer to the GA8 wheelbase.
I like your adapter part concept and think the same design could be applied to the GP40 power unit with provision to mount MT-1015 couplers as are commonly used in HOn30 applications. Thank you for making the GA8 available!
Below is the GP40 power unit mockup.
danamarseille I received my GA8 and adapter yesterday. Beautiful model. Thank you!
Several concerns that need to be pointed out:
1) The F7 adapter will not fit the body as designed. The adapter is too wide to fit in the area of the locomotive shell where the hood tapers to the cab.
2) The adapter has an extremely tight fit on F7 power unit that one corner of the adapter cracked in two - I super glued it back together. Some filing and sanding will be necessary for a good fit.
3) Just my opinion but I think the N scale F7 is too short for this model. The F7 wheelbase gives it a "Toonerville Trolley" look. I believe that a n scale GP35 or GP40 power unit would give the right appearance. I will investigate this possibility.