[Sol]

Back to back wheels should be somewhere between 14.4 & 14.8 mm - too tight & they will get stuch at the frog between wing & guard rails - too big & they can hit the frog point if the guard rail does not keep the wheel away from the frog point.

 

[Sol]

QUOTE (noiseboy @ 30 Dec 2008, 03:53) <{POST_SNAPBACK}>Interesting, Ron - how do I adjust? (bit of a newbie!)

I use a gauge , remove wheels from the bogie/wagon & gently twist the wheel on the axle in either a pulling or pushing motion.
For a gauge, C&L have one http://www.finescale.org.uk/show_page.php?...ca218a601d932#i,
the HO NMRA track & wheel gauge is ideal as well http://www.nmra.org/standards/sandrp/rp2.html ,
DOGA sell one http://www.doubleogauge.com/shop.htm