scaro Posted March 2, 2019 Share Posted March 2, 2019 I have seen a few diagrams for SD35s. All give 35' between what looks to be the two truck centres, which on an SD35 is the centre axle position, as from what I understand on an SD35, the axles are evenly spaced. That is : 6'9 1/2" + 6'9 1/2". However, diagrams drawn by RRs and model magazines are not always right. A couple of the diagrams say the 35' measurement is 'between bolsters'. Since on many locos the bolster position is NOT the same as the truck centre, I wanted to check if anyone knows whether an SD35 is really 35' between truck centres? Cheers, Ben S. Link to post Share on other sites More sharing options...
pH Posted March 2, 2019 Share Posted March 2, 2019 Have you seen these? https://www.thedieselshop.us/Data EMD SD35.HTML http://www.trainweb.org/utahrails/drgw/locolength.html Link to post Share on other sites More sharing options...
scaro Posted March 2, 2019 Author Share Posted March 2, 2019 (edited) Hi, the Utahrails I had not seen, thanks for that. The Dieselshop I'm wary of as it actually indicates some of the problems. Note that for an SD35 it tells us : Distance between Truck Centers 48'-07 I think I understand how he got that error, but it kind of illustrates the problem. Regards, Ben Edited March 2, 2019 by scaro Link to post Share on other sites More sharing options...
RMweb Gold Regularity Posted March 2, 2019 RMweb Gold Share Posted March 2, 2019 54 minutes ago, scaro said: Hi, the Utahrails I had not seen, thanks for that. The Dieselshop I'm wary of as it actually indicates some of the problems. Note that for an SD35 it tells us : Distance between Truck Centers 48'-07 I think I understand how he got that error, but it kind of illustrates the problem. Looks like he has provided the total wheelbase. Yes: big problem. Is it lack of checking up, which raises questions over the accuracy of any information provided, or lack of understanding of the prototype, which raises the same concern - data may be accurate, but not reported correctly. Link to post Share on other sites More sharing options...
scaro Posted March 3, 2019 Author Share Posted March 3, 2019 (edited) It indicates to me that there's not much checking going on and therefore the chances of wrong information getting repeated are high. I found the other day for example that SD40-2s are really 43'3" rather than 43'6" between mid axles. Surprised me as I'd seen the 43'6" figure for nigh on thirty years; it's in a lot of publications, so I assumed it was right. Not a huge difference, but the 43'6" figure is between bolsters. The figure that's more important for modelling is the mid axle measurement, I 'd think . Ben Edited March 3, 2019 by scaro Link to post Share on other sites More sharing options...
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