Nick Dunhill's Workbench - Queen #3

[simond]

Or the worm wheel is a 2-start on the small gear and a single start on the larger gear wheel.

Yep, good call…

 

[Renovater]

Yep, good call…

Depends on the radius of the running wheels and even then...

 

[RichardG]

I am pondering whether the constant slippage will make for dirtier tyres on the wheels with electrical pickups. Or whether the effect will be negligible.

 

[Genghis]

I am pondering whether the constant slippage will make for dirtier tyres on the wheels with electrical pickups. Or whether the effect will be negligible.

Or whether the slippage will clean the wheel tread like it does at 12" to 1'?

 

[PaulRhB]

In reality both wheels slip on any loco by a fractional amount anyway and dirt is more likely from poor contacts, as wheels lift slightly if uncompensated, than slipping. There are a few rtr models driving the large and small wheels without any problems so the problem is only if one wheel slips noticeably and looks odd. Rapido Stirling Single and Bachmann’s 009 Kerr Stuart both have drives to different sized wheels.