
Originally Posted by
Peter
If I had positive force on the door ram say 150Lbs positive and used a cable to pull it shut but I think the constant strain would not be a good idea-
As one can see on the video on YouTube I have an 8" actuator which doesn't open the door enough and increasing the lift by 1" means 2" in overall length, is slow, 7secs and noisy, so although it will do for now I am looking at a better way.
Twin actuators in the door roof acting on double jointed hinges in the roof covered by a door roof flap is one idea I designed for TEAC SS back in 2005 or hydraulic rams operated via valves from an accumulator for instant pressure. or sod it, stay slow, noisy and mind my head.
But I do love those units, very strong and quite quick.