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Wheel back to back measurements

3137 Views 19 Replies 10 Participants Last post by  Thunder, 
80class
When I completed the track laying on my fiddle yard, I noticed that two of the five locos I was using for testing where shorting my ECoS when travelling over points. Great I thought a problem with the wiring. Thankfully, the wiring appears to be ok. That leaves me to suspect the back to back wheel measurements as being a problem as the other three locos have no problems.

I then bought the C&L back to back gauge for 00:


However, I am not sure how best to use this gauge. I believe the measurement between the wheel backs should be 14mm, is this correct?

Also, is there an easy way to adjust this on locos or does it involve a complete dismantle to prise the wheels further apart?

Sadly I suspect this will be a problem with quite a few of my locos and I guess is an unfortunate side effect of DCC as it comes with the required better sensitivity of boosters that forces you to use best operating practises!

Rob
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B
HI
The Double O Association in the UK for the standard OO (Not finescale) B2B recommendation is 14.4mm +/- 0.05mm Here's a link to their standards page Double O Standards for Universal B 2 B

When Richard has finished his wheel puller can we have some more details including costs etc. Richard can you place something in the foirum when your ready please?
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