David, I had mentioned the larger one to the school, but with tight budgets and all, they opted for the smaller ones. I'll make sure I put them as far to the side as possible. I have experience with drilling holes for the lag screws in when I was making my wife's fancy patio deck cover. I only broke one bolt on that one (the first!) and learned my lesson. Thanks, Rob McCall McCall Piano Service, LLC Murrieta, CA rob at mccallpiano.com www.mccallpiano.com 951-698-1875 On Nov 03, 2009, at 08:36 , David Stocker wrote: > I have installed more than 50 sets of dollies on uprights, all the > larger variety. Larger wheels deal better with thresholds. Most > smaller sets I have seen have bent over time so that the castors no > longer follow (castor, the verb) properly. Good luck with yours. > > Dollies MUST MUST MUST be installed as close to the sides of the > piano as possible. Many piano bottom boards and toe (or pedal) rails > will warp if they are not installed towards the outside. I have seen > several pianos with dollies installed by a local store where the > back of the keybed has been forced up enough to cause severe > regulation problems. > > When installing the larger dollies, if there is a toe I will drill > through the side of the dolly into the toe and insert a lag screw. > This prevents the dolly from pushing up on the toe rail, and keeps > the piano from rocking. (Ooooo, you have damaged the finish! Oh, > yeah? This school piano is going to be beat on for sixty years and > then be surplused for fifty bucks. I will opt for the solid feeling > piano.) > > Drill your holes for the lag screws carefully, they are a soft metal > and will break off if the hole is not big enough. Argh! Ask me how I > know this! > > David Stocker, RPT > Tumwater, WA
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