atlas/kato truck interchangeability?

[scaro]

Hi

I am wondering if trucks from an Atlas/Kato (Japan) RSD4/5 or RSD12 (same truck, I believe) could be transplanted into an Atlas/Kato (Japan) U25B mechanism?

Regards

Ben

[nkalanaga]

I can't help you, as I don't have any RSDs, but they used the same frame as the Atlas/Kato RS3, if you have one of those.  So, if the RS3's trucks will fit the U25B, the RSD trucks should as well.

[mecgp7]

Ben,
They do fit and the loco runs just fine. I actually tried it.
Clint

[Wardie]

I don't have any RSD's either, but I am curious as to what you may be building?

[scaro]

Hi Wardie

Not building anything with this particular combination, but given the chassis wb (leaving the centre axle out) and overall wb and regaugeability of the Atlas/Kato RSD trucks, it may be a way to come up with a correct mechanism for an EMD FT, in TT scale . you need NWSL wheels though, drilled for 3/32" bores and K&S tube to make the axle stubs.  but I have some of those.

U25B wb = 36'2" in N = 27' 1/2" in TT.  An FT is 27"3" wb.  if I see one cheap I may pick it up.