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 Other Great HO Trains
 AHM/Rivarossi Motive Power & Rolling Stock
 AHM gear ratios & motor rpm
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Author Previous Topic: AHM Train Set Topic Next Topic: NWSL regear  

smokie
Hudson

smokie

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 Posted - July 08 2011 :  9:35:46 PM Link directly to this topic  Show Profile  Add smokie to Buddylist
does anyone know what the gear ratio in an AHM challenger is? also any idea of how much rpm the AHM motor will put out on wide open throttle. it's a 1978 year model i believe. it's a grey 3975 or something like that.
jerry
 Country: USA  ~  Posts: 553  ~  Member Since: January 14 2009  ~  Last Visit: September 13 2024 Alert Moderator 

NickelPlate759
Big Boy



Rivarossi Logo

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 Posted - July 09 2011 :  7:14:57 PM Link directly to this reply  Show Profile  Add NickelPlate759 to Buddylist
Remove the motor and count how many revolutions of the input shaft it takes to give you one revolution of the drivers. That will give you your ratio.
The Tyco Depot
 Country: USA  ~  Posts: 3927  ~  Member Since: June 20 2007  ~  Last Visit: November 19 2015 Alert Moderator  Go To Top Of Page
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