Flyboy

Yes, Stanley Ferry works. https://canalrivertrust.org.uk/news-and-views/news/huddersfield-canal-lock-gates-get-chelsea-makeover-for-welcome-to-yorkshire

Amazing project. The time lapse video is interesting. https://www.housebeautiful.com/uk/garden/a27519892/chelsea-flower-show-welcome-to-yorkshire-garden-mark-gregory/ CaRT donated old lock gates. https://www.youtube.com/watch?v=GI87xHWLxMA&t=36s

Yes but I thought that asking more than one question at a time may be pushing it a bit.

What gearbox ratio have you got ? 1:1, 2:1, 3:1 ?

I think you mean M5. 3/16" is 4.7625mm

I don't recall 3/16" BSP ever existing, it goes fron 1/8", 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1",

BSP is not the same as Whitworth.

Totally agree, work of the devil imo.

Or heavy water!!

It's about 60p/kg at the moment.

I must try harder !!!

No, because they wouldn't be historic obvoiusly.

Sorry but you misunderstand my post. I do not have any predudice against historic boats, quite the opposite, I would like to see more historic boats on the system. What I was trying to get over to DRP is that all boat owners pay a licence fee and he gets a discount but moans that CaRT take his money and doesn't want his boat on the system and doesn't maintain the L&L. The fact that there is a serious stoppage on the L&L affects every boater in that location. CaRT have stated that the contractor is working 12hrs a day to fix it. When it's done the water losses on the L&L will hopefully be much reduced. DRP will just have to accept the situation like everybody else and accept that CaRT are doing the best they can to maintain the L&L.

I don't understand why you say that CaRT don't have much interest in historic boats when they give you a very generous discount on your licence fee. Other non historic boaters are subsidising your passion to show off your boat.