You adjust the tension with the door closed.
Trailer door spring tension.
Torsional torsion springs designed and manufactured to be installed into gates trailer ramps doors hatches and lids to complete a leverage function by making it easier to lift or lower the gate ramp lid or door.
Edited by xp123 28 december 2015 07 01 am.
The cables could not be detached with the ramp door lowered because the springs would suddenly lose tension and they could break and that is very dangerous.
Recently our polar pj trailer hybrid snowmobile trailer polar sport enclosed trailer had a stuck door it would not pull open either it was frozen or ja.
These trailer doors work different from a garage door.
I m thinking you may have to adjust them while open because that s when the tension will be the strongest.
Single spring 96 2 x 60 lbs.
Spring type hinges should not be used with m 3 spring assists as they alter the physics of the door and you will not achieve satisfactory lift.
The overhead ramp door spring system is designed for enclosed trailers.
The winding pucks face each other.
You will find that design assistance here in this article.
All mounting hardware included except for mounting bolts.
Ramp door hinge style m 3 spring assist systems are designed to be used on doors with pipe style hinges attaching the ramp door to the trailer frame.
When starting a new torsional trailer spring design you must know the following parameters.
The mounting bracket has two 3 8 holes that allow the installer to bolt the spring to the rear header.
The springs used for trailer ramps doors hatches gates and lids are torsion springs.
The torsion springs on our trailer door need adjustment.
Trailer ramp springs are heavy duty torsion springs which work as a lift assist to take the majority of weight off of the gate ramp lid.
Cables are wound on drum and 1 shaft is clamped with vise grips to prevent.
Page 1 of 2 trailer ramp door torsion spring winding posted in trailer talk.
Have two new cables and know how they came off the drums.
I ve installed many garage doors and replaced many torsion springs.
The system features a double drum and cable.
The springs are under a lot of tension.
