Hello Guys,

well thanks for the replies. I had a lot of searching and it looks like the direct replacement with higher speed isn't available. I have considered changing to brushless motors, but to be honest I'm wondering whether the time to machine the necessary fittings is worth it as it has done well for a number of years at the 4K+ speed.

So, many thanks for the replies, but have ordered a replacement from Warco - arrived next day.

Regards,

GeoffB