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 Atlas Worms and Mehano Trucks
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Author Previous Topic: Another odd powering project ''cause I feel like it Topic Next Topic: Scratch Built Hand Rail Stanchions  

Redneck Justin
Big Boy



The Young Dr.Frankenstein!

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 Posted - January 02 2015 :  11:25:15 PM Link directly to this topic  Show Profile  Add Redneck Justin to Buddylist
I've heard an Atlas worm gear does nicely in a Mehano truck. Heard it lowers the gearing quite abit. How much work does it take to swap one in and what era of the Atlas diesels works?
" Heck with counting 'em rivets, TRAINS ARE FOR FUN! Not called the Mad Scientist for nothing either!"
 Country: USA  ~  Posts: 3147  ~  Member Since: May 07 2007  ~  Last Visit: June 10 2025 Alert Moderator 

NickelPlate759
Big Boy



Rivarossi Logo

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 Posted - January 03 2015 :  12:32:47 AM Link directly to this reply  Show Profile  Add NickelPlate759 to Buddylist
The worms for their Kato Alcos are the best fit. They will halve the current speed. It's discussed here, and if you click the auction link they have finally been relisted:

http://www.tycoforums.com/tyco/forum/topic.asp?TOPIC_ID=9737

I press them off of their stock shafts and transfer them, but they may be long enough for a drop-in replacement. The trucks just snap a part with a screwdriver.

The Tyco Depot
 Country: USA  ~  Posts: 3927  ~  Member Since: June 20 2007  ~  Last Visit: November 19 2015 Alert Moderator  Go To Top Of Page

Redneck Justin
Big Boy



The Young Dr.Frankenstein!

Status: offline

 Posted - January 03 2015 :  01:05:55 AM Link directly to this reply  Show Profile  Add Redneck Justin to Buddylist
OK. I found this Nelson:

http://www.ebay.com/itm/BRASS-WORM-GEARS-4-ATLAS-KATO-HO-Scale-/351269188906?pt=Model_RR_Trains&hash=item51c946752a

I always wanted to modify an Mehano C630. Better gearing, add some pick ups, and flywheel drive system. Just a redo of the engine detailing included.

" Heck with counting 'em rivets, TRAINS ARE FOR FUN! Not called the Mad Scientist for nothing either!"
 Country: USA  ~  Posts: 3147  ~  Member Since: May 07 2007  ~  Last Visit: June 10 2025 Alert Moderator  Go To Top Of Page

NickelPlate759
Big Boy



Rivarossi Logo

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 Posted - January 03 2015 :  01:22:02 AM Link directly to this reply  Show Profile  Add NickelPlate759 to Buddylist
They will do the trick. As I've pointed out before, tho, it will never be a great puller due to the 2 idler axles. You could put a TT tire equipped wheel on each truck to help it along, which you can pull from almost any Mehano diesel.
The Tyco Depot
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Darth Santa Fe
Big Six

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 Posted - January 06 2015 :  01:35:48 AM Link directly to this reply  Show Profile  Add Darth Santa Fe to Buddylist
Yup, replacing the Mehano worm with an Atlas worm will cut the speed in half. The reason for this is the Mehano worm is a double-thread type, while the Atlas is a single thread. So, instead of moving 2 teeth per revolution, it will only move 1 tooth. If your diesel runs at a scale 120 MPH, it will become 60.
Darth Santa Fe, doing weird and challenging projects for the fun of it!

 Country: USA  ~  Posts: 248  ~  Member Since: September 13 2011  ~  Last Visit: January 23 2025 Alert Moderator  Go To Top Of Page
  Previous Topic: Another odd powering project ''cause I feel like it Topic Next Topic: Scratch Built Hand Rail Stanchions  
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