Sorry. Yes it is a flange.   No groove for tires.

The radius is 26".  Will try the CV's....going to be away a few days will get back to you next week;  much appreciated, thank youl

BTW I should have mentioned the two locos are both the Blue Box Bachmann Spectrum's  1107 Susquehanna and 2443 Western Maryland.  It could be that they are just too light to pull more than 4 cars up the grade I have which is also curved.

Thank you for the CV information guys; I'll try them out.  I have been playing a bit with Tsunami CV's and have modified 209-218.  I think the locos both seem to run smoother but no greater pulling power with what I've done so far.

On the earlier points made, the wheels and track were cleaned with no change.  I was wrong about my grade; it is closer to 3% than 2% which works against me. 

Regarding possible traction tires, four sets of wheels have a rim on the inside of one side but no groove; the middle set has no rim.  So I am not sure traction tires are for these engines.

Thank you all for your help.

Thanks folks. All great points. I will start working on them today and get back to you. I have noticed my factory set cvs may need fine tuning. I'm using NCE DCC.  The grade is 2%.  Will check the wheels. I have been weighting my rolling stock to 80% of the NMRA recommendations.  Wheels might need cleaning will get back to you all. Many thanks

Thank you both for the reply's.  Will try your advice

I have two 2-10-0 Spectrum Steam Locos that have no pulling power up a slight grade;  wheels slip and I cannot pull a decent load of cars.  I have looked to see if i can add weight to the engine but there does not appear to be any space available other than a bit in the tenders.

Are traction tires or Snot an option?  If so, what tires should I be looking at and where would I get them.  Do you put them on all the drive wheels or just a few?   Fairly new at this so I appreciate any help.

Got it.  Thanks for helping a newbie Rich
regards
Howard

I recently purchased a Spectrum 4-6-0 MD and PA steam loco - DCC with Sound.........I realized no manual was included in the box.  Can anyone suggest how I can get a user guide or manual....eg., with a list of functions, etc.  Cant seem to find the right area on the Bachmann site to get one.
thanks in advance