Mmm that’s really interesting! I was watching a guy who had it hooked up low down and thinking “yeah that’s going to tip down the stairs”, now I understand the engineering logic. Probably could thread it through the handle to avoid tipping.Ok !
Have a look at this it will help some
I am so cool at making VTs
Problem I see is if your load gets lodged or jammed against a step, even by a cm, coming up. Your weakest points then would be that bar, followed by the wall( which is designed to take vertical load not horizontal stress) and then your load strap( and possibly the pinball), remember loads get multiplied by distance and friction , think it’s referred to as breaking strain. Normally these winches have bolt holes in the base for surface mounting. When you think you have a plan I can come round and tap your walls and advise on weak points in design, I’ve experience of loading dead cars and commercial catering equipment .Blimey, that’s a flippin girder! The only thing I’m thinking is that the bar needs to be smaller in diameter than the brackets that come with the winch. Otherwise I don’t know how I would go about securing it and it could end up being the weak point in the chain. So I’m thinking a weight lifting bar capable of 250kg is ideal. I can attempt to spread the load up the wall with planks of wood.
Thanks, I appreciate the offer! I think by the time Martin gets back to me this whole coronavirus thing may be a long and distant memory.The gap between the two walls look to be 5-6 foot gap , this will mean something like 6”x2” doubled up or even 8”x2” doubled to spread the load on the walls and to stop the flexing of the timber if t machine gets court up on a step .
ps : if you want to ditch this and want some help to move your machine , I would gladly help you , i still have a few ppf3 masks left