I suspect that you need a longer arm a much longer arm.
Garage door arm angle.
Eventually the lifter stalls the lifting arm breaks or the door tears itself.
Follow the manufacturer s instructions to determine the bracket arm angle from vertical when the door is in the fully closed.
I think the angle is not right.
The bracket connecting the operator to the door must be structurally adequate based on the amount of force required to lift the door.
Angle of the rail for a garage door opener post by sludge7051 x wed feb 18 2015 4 31 am yes on this page.
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Liftmaster 178b35 curved door arm garage door opener chamberlain craftsman model.
2nd door has similar chain drive opener no problems.
Please see page 11.
If i extend the arm the rail bows even more before the door fully closes.
Once the straight section of the arm goes beyond vertical it is probably putting a twisting motion on the moving mechanism and that twisting is what is causing the track to bend upward not the downward pressure on the door.
The liftmaster model 3280.
I notice that when 2nd door is closed there is a maybe a 45 degree angle on.
However i m concerned that while the door is fairly quiet going up during last 1 3 of going down it makes lots of noise and overhead track bows downward.
Find out proper reinforcement of your garage door with your garage door opener.
Ideal door overhead garage door track angle iron hanging kit.
The arm that comes with the kit is too short i m only able to connect the straight and the curve arms using two consecutive bolts.
Door arm to operator bracket installation for the typical residential garage door.
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Garage door problem arm angle.
This video clip shows the preparatory adjustments that the installer of the lifestyle screens garage door screen has to make to the permanent garage door ope.
Now that we push buttons the lifter just muscles the door through the defect which of course does nothing to improve the situation.
Before openers if a garage door was having problems you d know it immediately because you d feel it bind and you d fix it early.