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Friday, November 22, 2024

4-6-6-4 concept chassis

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15 years 9 months ago #2466 by zthek
4-6-6-4 concept chassis was created by zthek
Last weekend I had a chance to further update my five year old 4-6-6-4 concept chassis.



I've added a large flywheel, replaced the flex tube with a real flex shaft, added wheel wipers to the rear set of drivers, so the whole thing became "independent" (compare to the hard wiring of the old one).




I tested the chassis with my snail speed controller, it starts very slow. Also, tested with clean DC. It starts to move just above 1V, runs smooth, and draws between 60 -70 mAmps. This updated mechanism negotiates the 195mm radius turns even smoother, just looks a kind of stupid. The only problem I see, it's too fast. It runs as fast as the MTL F7 with top speed when receives only 3.5V. Next time I'll borrow a planetary gear set from one of my under performing (dead) F7, and install into this creature. I'm very confident, this type of drive mechanism could be the best solution for large Z-scale locomotives. Again, if it's not a bash, but a focused design, this huge motor / flywheel combination installed into the tender leaves plenty of room for lots of weight to help with amazing traction. Last week I've picked up a Canon video camera, now I'm learning how to shoot and edit videos. When you guyZ will see the smooth move of this creature, you'll agree, this mechanism should be AZL's pick for the Challenger. Powerful steam on the American way.

Lajos:)

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15 years 9 months ago #2467 by Socalz44
Replied by Socalz44 on topic Re:4-6-6-4 concept chassis
Lajos, This is truly a masterpiece. Fantastic. Cheers, Jim CCRR:)

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15 years 9 months ago #2468 by craZ13
Replied by craZ13 on topic Re:4-6-6-4 concept chassis
Very nice Lajos. Hopefully the big boys will listen and step-up to the plate. A great idea for steam fans. One of my customers is really interested in Z but wants (affordable) steam. This might be the answer if some one works out the details like you are doing.

Thanks,

Jerry
B)

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15 years 9 months ago #2480 by zthek
Replied by zthek on topic Re:4-6-6-4 concept chassis

This is truly a masterpiece.


Not yet. It's an OK bash and promising concept. Lets reserve the word for some real acheevements...

Lajos:)

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15 years 9 months ago #2508 by TerryH
Replied by TerryH on topic Re:4-6-6-4 concept chassis
WOW! Super, keep posting your progress.

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15 years 9 months ago #2510 by Radialman
Replied by Radialman on topic Re:4-6-6-4 concept chassis
Nice Lajos! I'd love to see a shell on this thing. I'd bet it would be one killer looking machine.

Jeremy

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15 years 9 months ago #2515 by zthek
Replied by zthek on topic Re:4-6-6-4 concept chassis

I'd love to see a shell on this thing.


It was sitting in the bottom of a drawer for about five years. I never planned to complete as a locomotive. My original intention was to figure out the appropriate drive for a Big Boy or Challenger, so some day I can build a few good working model. With the planned release of the AZL Challenger (and I'm sure the Big Boy to follow) I have no reason to work my tale off to make inferior models of those monsters. I'll buy them from AZL. I'm playing with my old concept, hoping AZL will use some similar drive system to power the Challenger, so we can enjoy some real American power at our train shows.

Lajos:)

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15 years 9 months ago - 15 years 9 months ago #2524 by SJ-BAZ-man
Replied by SJ-BAZ-man on topic Re:4-6-6-4 concept chassis
Lajos, you and I can work on it together. If they don't get it right, we'll make it so.

But you are not using mine for parts !


Jeff

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15 years 9 months ago #2537 by ULie
Replied by ULie on topic Re:4-6-6-4 concept chassis
Hello Lajos,

I just saw your video and I wondering what did you do to the original motor in the middle section. Is it stil working or did you convert it to a kind of flywheel too? In the front section the motor is replaced by a gearbox, or did I see that wrong?

Now this would be great if this evolves into a complete steamer.

GreetingZ, HilZen,

Uwe

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15 years 9 months ago #2539 by zthek
Replied by zthek on topic Re:4-6-6-4 concept chassis

what did you do to the original motor in the middle section


The armature ended up in the junk box, it was replaced with a small bronze flywheel. The original concept model didn't have the big flywheel. The transparent gearbox is part of the original motor assembly, but the magnet housing with the bearing was chopped off.

Lajos:)

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15 years 9 months ago #2544 by TerryH
Replied by TerryH on topic Re:4-6-6-4 concept chassis
I watched the video and it is amazing how smooth it runs. I am really impressed. Good luck with it.

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15 years 9 months ago #2552 by Fred
Replied by Fred on topic Re:4-6-6-4 concept chassis
Now That's some real American Steam Power!
Fred:woohoo:

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15 years 5 months ago #5093 by liltoot
Replied by liltoot on topic Re:4-6-6-4 concept chassis
but what is the pulling power of these gigantic mammoths? will they be like the GG1s with 6 cars bogging them to a crawl? or will they out pull marklins mallets? i ve put on 63 marklin cars on a mallet before the big slippage started to occur,,,and 41 of the mtl cars,,being slightly heavier in some,, before the mallet started slipping,, what will these monsters do? the AZL cabforward was a great piece of engineering,, but my blue mallet could take more cars. now im not saying marklin stuff is better, nor am i saying the new AZL challenger wont perform the mallets are the largest marklin units i had for testing, thats all.

i was one of the first to buy the beautiful GG1S, and i was sure that they would be alot of power,, but they just didnt fill those expectations everyone hoped for. where the AZL gs3 OR 4 IS A MAJOR POWERHOUSE for pulling huge strings down the track, you cant beat their power!!

i m a steamer lover,i own 9 desiels in total only, yet,, i have ALMOST collected EVERY steamer out there for marklin, azl, and swiss lines. and they dont just sit n get looked at,, everone is getting a turn on my new a expanding huge layout each month. and ofcourse, my preorder will be in for the challenger,,, but i just hope that its looks doesn t get in the way of it performance,, thats all. canada mike

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