If your looking for a good, inexpensive speedo, I've just seen this:
http://www.rccarshop.co.uk/catalog/p...roducts_id=285
LRP Sphere TC £115. LRP & Nosram share the same innards I think, so this might just do for you?
I've run SP v3 motors with LRP speedos with no speed issues this season.
HTH
