Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

Front Range GP7 Drive Train Parts Needed

565 views
9 replies
1 rating 2 rating 3 rating 4 rating 5 rating
  • Member since
    November 2005
  • From: St. Paul
  • 765 posts
Front Range GP7 Drive Train Parts Needed
Posted by garya on Sunday, January 10, 2021 4:20 PM

I bought a Front Range GP7 kit from a sale a while back.  The unit has the body shell, frame, and trucks and gear towers, but no drivetrain.  It does have worm gears in the gear towers:

 

Sorry for the bad pics.  I found a motor and motor mount that should work, but I will need some way of connecting to the worm gears.  Any idea what parts will work?  I looked at A-Line, but I can't tell what parts will fit.

Gary

  • Member since
    May 2010
  • 7,439 posts
Posted by mbinsewi on Sunday, January 10, 2021 8:59 PM

Maybe PPW/A-line has what you need.

https://ppw-aline.com/pages/re-powering-parts

They have shells and parts. Just maybe.

Or NWSL.

Is that a ball on the end of the worm gear? like some Athearn drive shafts?

Mike.

  • Member since
    November 2002
  • From: US
  • 2,401 posts
Posted by wp8thsub on Sunday, January 10, 2021 9:31 PM

I have several mechanisms based on the old Front Range frames.  Note that none of them use the original trucks, as they were extremely poor in quality.  You may be in for a lot of frustration if you try to make them function reliably.

The good news is that Athearn parts drop right in.  You can use Athearn GP trucks with no modifications.  I know you said you have a motor, but for anyone else reading this (or if you change your mind), Athearn's RTR or later blue box motors will work, I think right down to the stock motor mounts.  Repower kits from A-Line/Proto Power West can be installed easily too, and can readily be made to work with Athearn universals.

You can also substitute a Kato motor, again using the stock mounting bracket and screws.  If you can get them, Kato trucks from the old Kato manufactured Stewart F units are a drop fit just like the Athearn trucks.  On all of my Front Range Geeps, I installed the entire mechanism from a Kato F unit, which fit like it was made for the Front Range frame.

Bottom line, decide on the universals after figuring which replacement trucks you want to use.

Rob Spangler

  • Member since
    November 2005
  • From: St. Paul
  • 765 posts
Posted by garya on Sunday, January 10, 2021 10:36 PM

mbinsewi
Is that a ball on the end of the worm gear? like some Athearn drive shafts?

Yes, a ball, but a flat plate, too:

Gary

  • Member since
    January 2017
  • From: Southern Florida Gulf Coast
  • 10,953 posts
Posted by SeeYou190 on Monday, January 11, 2021 12:31 AM

wp8thsub
On all of my Front Range Geeps, I installed the entire mechanism from a Kato F unit, which fit like it was made for the Front Range frame.

Are you serious...

I have a Front Range GP that was delivered severely damaged. The whole mechanism is destroyed. The body and frame are OK.

I also have many many Stewart/Kato F units.

Wil the trucks, motor, and linkage really drop right into the Front Range GP frame?

-Kevin

Wink Happily modeling my STRATTON & GILLETTE RAILROAD. A Class A line located in a personal fantasy world of semi-plausible nonsense on Tuesday, August 3rd, 1954.

  • Member since
    November 2002
  • From: US
  • 2,401 posts
Posted by wp8thsub on Monday, January 11, 2021 10:34 PM

SeeYou190
Are you serious... I also have many many Stewart/Kato F units. Will the trucks, motor, and linkage really drop right into the Front Range GP frame?

Absolutely - I have more than one of these.   Almost all there is to it is assembling the Kato mechanism components on the Front Range frame.  I can't recall if I needed to file off any material from the worm gear clips to fit just right, but if I did it couldn't have been much.

Rob Spangler

  • Member since
    January 2017
  • From: Southern Florida Gulf Coast
  • 10,953 posts
Posted by SeeYou190 on Monday, January 11, 2021 10:50 PM

wp8thsub
Absolutely - I have more than one of these

Rob, thank you for this verification. This is really good news for me.

-Kevin

Wink Happily modeling my STRATTON & GILLETTE RAILROAD. A Class A line located in a personal fantasy world of semi-plausible nonsense on Tuesday, August 3rd, 1954.

  • Member since
    November 2005
  • From: St. Paul
  • 765 posts
Posted by garya on Monday, January 11, 2021 11:05 PM

wp8thsub
  If you can get them, Kato trucks from the old Kato manufactured Stewart F units are a drop fit just like the Athearn trucks.  On all of my Front Range Geeps, I installed the entire mechanism from a Kato F unit, which fit like it was made for the Front Range frame.

Aren't those the same trucks as old Atlas Geeps?

 

Gary

  • Member since
    September 2002
  • 185 posts
Posted by KemacPrr on Monday, January 11, 2021 11:27 PM

I've repowered a number of Front Range GP-7/9 units with the Stewart/Kato drive. The whole drive will swap over trucks motor/motor mounts and driveline. Years back I also repowered some Athearn GP-35 frames with the Stewart F unit drives then used the Bachman GP-30 body with it. --------Ken 

  • Member since
    November 2002
  • From: US
  • 2,401 posts
Posted by wp8thsub on Monday, January 11, 2021 11:35 PM

garya
Aren't those [Kato F unit trucks] the same trucks as old Atlas Geeps?

Good question.  I haven't tried the swap with an Atlas Geep mechanism.  Anybody?

Rob Spangler

Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

Search the Community

ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
Model Railroader Newsletter See all
Sign up for our FREE e-newsletter and get model railroad news in your inbox!