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 Posted - July 28 2014 : 8:15:56 PM
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I wanna rebuild and upgrade the infamous Athearn hustler into a geared and better detailed machine. I've decided to use worm gears and axle gears from a BB era 4 axle truck of Athearn brand. What kinda gearing can I expect? I'm using a smaller flat double shaft from NWSL and other parts from them and making a custom motor mount and weight for it to weigh it down some. The axles will fit the axle gears from the 4 axle truck as I had tried on a junker chassis. NWSL stated a while ago research is being conducted and may produce a direct drop in retro-fit. Not holding my breath!
" Heck with counting 'em rivets, TRAINS ARE FOR FUN! Not called the Mad Scientist for nothing either!"
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Posted - July 28 2014 : 8:35:37 PM
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quote:NWSL stated a while ago research is being conducted and may produce a direct drop in retro-fit. Not holding my breath!
Originally posted by Redneck Justin - July 28 2014 : 8:15:56 PM
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And you can bet they'll want big $$ for it
http://tycodepot.com/
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Posted - July 28 2014 : 8:37:02 PM
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For sure! The Flea components could be used. Too high priced!
" Heck with counting 'em rivets, TRAINS ARE FOR FUN! Not called the Mad Scientist for nothing either!"
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Posted - July 28 2014 : 10:50:43 PM
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The Flea components are expensive, but they sure do run good!
http://cs.trains.com/mrr/f/88/t/173909.aspx
The Athearn gearing is 12:1, and with the small NWSL motor (which is probably 12,000 RPM or so), you can expect a speed of about 125 scale MPH at top speed.
NWSL made a PDT drive truck for the Hustler a while back. You can still find them now and then. You could also make a reduction gear tower to slow it down, kind of like I did for mine.
Darth Santa Fe, doing weird and challenging projects for the fun of it!
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Posted - July 28 2014 : 11:24:03 PM
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Would a larger diameter worm gear help? Trying to get a lower gear.
" Heck with counting 'em rivets, TRAINS ARE FOR FUN! Not called the Mad Scientist for nothing either!"
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Posted - July 28 2014 : 11:46:00 PM
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Changing the worm diameter unfortunately won't affect the speed. It's actually the number of threads in a worm that will change anything at that level. The Athearn worm is a single-thread type, so it's already as slow as you can get, as it will take a full 12 turns to move each of the 12 teeth in the axle gear. With a dual thread, like Rivarossi often used, it would take 6 turns to move 12 teeth.
With the 12 tooth Athearn axle gears, you'll need either a reduction tower before the worm or reduction gearing after the worm (as in, have a worm drive a 23 tooth gear with a 16 tooth beside it on the same shaft).
Darth Santa Fe, doing weird and challenging projects for the fun of it!
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Posted - July 29 2014 : 12:08:03 AM
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A 2 axle truck has much too short a wheelbase, but a BB EMD 3 axle truck matches the Hustler's axle spacing very well. The center wheels could be removed from their axles while still keeping the gear train intact.
The trick would be shoehorning a small enough motor in there with it.
The Tyco Depot
Edited by - NickelPlate759 on July 29 2014 12:08:34 AM
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Posted - July 29 2014 : 12:08:14 AM
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Maybe hard to pull off. A 12:1 has to be an upgrade compared to the hi-f!
" Heck with counting 'em rivets, TRAINS ARE FOR FUN! Not called the Mad Scientist for nothing either!"
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