Chuck, I got lucky with mine. When it shorted nearly right away, the spark was so bright, I saw it across the RR bench. When I inverted the loco, there were burn marks between the wheel and tire where the carbon brush rubbed. The carbon was pointed OK but the arc jumped!
Wow, that's interesting to me. I thought they were all horizontal drives. A rubber O ring to drive a second axle.....Hmmm. I guess they didn't like the K-line version?
I got a MTH O scale Allegheny that I had converted to two rail. It suffered the exact symptom you show. I had to re-design the pickups to keep them from shorting out the tires to the frame. I ended up adding power pick-up points in the trailing truck and the tender to lessen the power draw on these wheel/tire pick-ups alone.
Is there a minimum Ohms that the QSI board will handle for a smoke unit? I would have guessed that the MTH draws less than others on the market. Maybe it's shorting the board somehow?? Each resistor is 16ohms on the MTH I think (2 16ohms in parallel = 8 ohms). Maybe just try wiring to one of them and not both in parallel to raise the impedance? You guys would know more than I.
If anyone wants to add command to these K-line trucks, one pick-up lead on each truck is tied to one tab on the motor. I believe that lead needs to be separated.
These motors are very weak and easy to stop just by rubbing the flywheel slightly. I'll have to see how the end up running and performance wise. I installed the new NWSL delrin gears inside each and will watch how they hold up as well.
I didn't mean to interrupt this NWSL truck post. By the way, those side frames look really good to me! Wish I would have known about them. I will probably get my hands on some 1/29 scale ones and chop them down.
I do wish MTH would have released more modern stuff like a switcher, Larry. It looks like you were way ahead of anyone I've seen posting on other forums with your work. I'm scratch building some and haven't mastered it yet.
Yeah, unfortunately I have to agree about the niche thing.
Ask around what guys will actually buy not just what they want. Most will tell you something else, but they only buy an engine every few years! Some want battery, some want steam, some want an obscure engine, narrow gauge, 1/21, 1/29, ..... and most won't shell out any cash anyways even when they could get what they ask for. G gauge is still a mess.
I want modern. I'll buy others that are cool to play with. I really liked the Challenger and my girl said it looked cool going 'round the corners at the ECLSTS. So I bought it. I'd have rather bought five new SD70ACes or ES44ACs, but they never came. Not sure now they ever will. I have to make them myself.
jerry, click the store tab on their webpage. in the search box on top left, type the part number and click for the search. for some reason this site won't let me post the link??
I recently got some of the MTH cars that I had missed from Ray M here on the forum. I'll have to get some pics of them when I unpack them in the spring. I realized that there were many that I missed. It was great to find them and they look like they're in great condition. I wanted to get more. There are so many cars and engines popping up lately, it seems finally to be a buyer's market. It was dry, just a few months ago I thought.
So anyways, Thanks Ray! I wish I could get them all!! Hoping MTH stays in the game.
.png.a4fb2273837361b3bbaa7a1d8a4c8996.png){kind=logo}
USA Trains 1:29 Big Boy Manufacturing Problem
in Locomotives
Posted
Chuck, I got lucky with mine. When it shorted nearly right away, the spark was so bright, I saw it across the RR bench. When I inverted the loco, there were burn marks between the wheel and tire where the carbon brush rubbed. The carbon was pointed OK but the arc jumped!