You are pretty good at making things work and so am i. I don't know much about the practical side though.
The site drills at £50 seem a good investment to me. Get more because spare batteries are good. The leisure battery is only 12v, these are 18v.
Whichever motor you use the torque has to be right.These drills with the two speed setting work on the lower speed- they do not work on the high speed setting,
I tried an impact driver and that would not work at all.
What i am saying, this is a simple solution and it works extremely well.If you saw it in action you would forget about trying to improve on it.
Any self layering system would still get snagged by kinks, and tangles.The key is to lay the hose out in an orderly way.If i carry my hose back to the van in a jumble of loops i get into a mess just like anyone else.
By feeding the hose in through a towel and having the other hand on the trigger the control is very good.WW said i should do a u tube and perhaps i should. It's a bit like the early days when we were the first with hot systems, all that argueing, what's the point.I've used the reels in this way for two years now.
I expect the self layering could be done, but i prefer simpler solutions.
If you could find a simple and cheap way to do the clutch you would probably have a good product.The criteria is that it should drive the reel, and freewheel when the power is off- that's all it has to do.So you need a male and a female bit that fit together, one on the drill and the other on the reel, and these to seperate when the reel wants to continue spinning without the drill.