Spring Fitted Garage Door Working Again
Returning at approximately 11:15, we set about installing the new spring, the spare spring was slipped onto the shaft for storage and safe keeping.
It was understood from previous experience that the spring should be stretched a little during installation, this was forgotten in the haste to ‘let’s see if it works’. The spring got very jumbled due to lack of space within the coil, the Door Control sensing the friction ceased moving after travelling less than 500mm. The attached sketch explains my calculations and reasoning for adjusting the amount of ‘Stretch’ and Number of Turns Preload. The result is a Garage Door that, by 13:30 on the day of collection was functioning properly without seemingly stressing the spring unduly.
Later after further observation I realised that most ‘flexing’ of the tightened spring, when the Door is Closed, could be relieved by reducing the Preload Turns and amount of coil ‘Stretch’. It is noted that the Preload Turns were made using only Hands, prior adjustments by ‘professionals’, albeit on a slightly ‘stronger/stiffer’ spring, were made using Tommy Bars to rotate the Shaft-Flange connection. It seems probable that excess Preload was the cause of the failure. Having made the adjustments to those recorded, the outcome is a quieter and smoother operating Garage Door than at any time since being installed. It seems unlikely that I will need to revisit Davies Springs for further help with this problem, but if the need arose I would not hesitate to do so.
I Have Absolutely No Connection
Anyone lucky enough to have located this site should find that they have arrived where they will be treated appropriately. The costs involved were, IMO, realistic and very close to that anticipated.
The above is my Davies Springs Experience, I have absolutely no connection with them other than as a VERY HAPPY CUSTOMER. Why respond so fully? Much of this is part of my records and, in my view help above and beyond commercial value deserves acknowledgement and reciprocation.
A Big Thank You
Congratulations and a BIG THANK YOU to Mike and the Whole Team, long may they work together and forge an ever growing band of satisfied Customers, and very best wishes for the future.