I have had this model for some time but didn't have a power truck small enough to work with it. A few weeks ago I ordered a few different power trucks from the Japanese seller on ebay. I really bought them for something else but when I saw this one I thought about the Mack 15 Ton Switcher.
I decided to lay out all the parts on my printer and make a card stock copy of them. My idea was to then build enough the model in card stock to see if it would work with the B-Train Powered Motorized Chassis 1 - Bandai (N Scale):
To get the power truck ready I cut off the extra material on each end. This left the motor and wheel assembly and made it small enough. I then modified the floor piece with a different shape hole and one that would allow it to fit over the motor. This work well as it turns out. I then cut and glued the cab and front and rear hoods. These I glued onto the cab. Everything fits OK.
I sat the cab assembly on the chassis / motor and ran it awhile on my N scale test track. Since the card stock mock-up seems to fit the power truck OK I started building the plastic kit.
List of Materials:
Jordan 15 Ton Mack Locomotive - Walthers - $10.95 plus shipping.
Power Truck - B-Train Powered Motorized Chassis1 - Bandai - ebay - $22.80 plus shipping.
I modified the length of the power truck by cutting off the couplers.
I made a card stock pattern to enlarge the hole on the chassis piece to fit the power truck.
When I was happy with the fit I modified he plastic part.
I glued up the cab and hood sections. They fit fine over the power truck.
While it seemed like a good idea at the time I believe I will use a power truck with the couplers. I will make a new floor piece to extend out over the part that shows as well as making a few other changes to the way the model looks.
I added one ounce of weight in the cab and get good slow speed. My test loop is Bachmann EZ Track and I am not very happy with it. Some of the track joints are bumpy to the point when going slow the engine almost stops. I have been running the power truck that wasn't shortened. I think I will keep that one and make a longer floor piece. Truth be know, I don't really care much for the this Mack design. I have a few ideas for some additional changes.
The model will get a Stanton Radio Control System with Battery Power, the Receiver and Battery will be carried in a follow along car.
acousticco wrote: Very cool! Dose it make the model sit much lower than its original height? I don't much like the look of these things either but the standard gauge ones have a certain charm...
Thanks for the comment.
The kit wheels are about 33" and the my power truck wheels are about 24".
The distance from the top of the rails to the under part of the floor piece is about 3 scale feet.
The smaller wheels and lower floor piece should be more in keeping with a hunker down narrow gauge look.
Your models look good, thanks for posting the link.