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Post by tjmfishing on Nov 14, 2011 18:26:17 GMT -5
Hello all, I need a powered frame with AAR trucks for my M420 build. The kit description calls for a "powered Atlas U23B frame with AAR trucks." I have read on other forums that the Atlas C420 frame is identical to that of the U23B and since its an Alco, it definatly has AAR trucks. Can anyone confirm this??
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Post by Mark R. on Nov 14, 2011 19:40:37 GMT -5
The C420 has a wheelbase of 34'-5" and the U23B has a wheelbase of 45'-6". The M-420 / M420R/ M420B have wheelbases of 47'-05" / 45'-09" / 45'-09" respectively. The Atlas U23B should be the obvious choice for an accurate wheelbase - especially important with the larger fuel tank.
Mark.
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Post by m636 on Nov 14, 2011 19:52:04 GMT -5
Mark, It can't be a diference of 10 feet between the C420 and the U23b wheel base. An SD40-2 have 43,6 feet wheel base
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Post by m636 on Nov 14, 2011 19:54:39 GMT -5
C420 have 34.05ft
M420 36.05ft
U23b 36.02ft
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Post by Mark R. on Nov 14, 2011 20:09:40 GMT -5
That's what I get for trusting the internet ! It appears as though they were typing 4's when they should have been typing 3's ! .... www.thedieselshop.us/DataM420.HTMLwww.thedieselshop.us/DataC420.HTMLwww.rr-fallenflags.org/manual/u33-gen.htmlIn honesty, after I posted that information it got me thinking - the three M420's and the M420B I built (on my site) utilized the Atlas C420 chassis (at the customer's request). They ARE shorter as the long tank wouldn't fit, but with the short tanks, the shorter wheelbase wasn't quite as noticeable. I did have to use long shank kadee couplers on the original chassis mounts, and even then, they barely extended far enough to be considered use-able. Mark. |
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Post by m636 on Nov 14, 2011 20:17:26 GMT -5
Mark, I did the same as you...... I went on The diesel shop for the informations and I was typing it, and a click   happened. and I get the information in the diesel spotter guide. ;D |
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Post by m636 on Nov 14, 2011 20:42:46 GMT -5
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Post by tjmfishing on Nov 14, 2011 21:24:36 GMT -5
Looks like I'll be looking for a U23B with AAR's. Thanks guys
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Post by Mark R. on Nov 14, 2011 21:34:37 GMT -5
So much for - "I saw it on the internet, it MUST be true !"  Mark. |
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Post by tjmfishing on Nov 14, 2011 21:43:37 GMT -5
Mark, when you're a chemistry major you quickly learn to compare information from several different sites. Who knew Napathalene had 3 different melting points!!
Now all I gotta do is find a cheap U23B with AAR trucks!
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Post by tjmfishing on Nov 14, 2011 23:05:54 GMT -5
yeah, wouldn't mind seeing it painted. Seeing as these were all ex CN they did some mods of their owns to it
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happened. and I get the information in the diesel spotter guide.