There are a couple of different grades of threadlocker for consumer use. General use: http://www.loctiteproducts.com/p/t_lkr_blue/overview/Loctite-Threadlocker-Blue-242.htm
Permanent - required 500 degrees to break bond. http://www.loctiteproducts.com/p/t_lkr_red/overview/Loctite-Threadlocker-Red-271.htm Dave On 9/5/2015 8:49 PM, Gene Heskett wrote: > I guess the fedex guy didn't have anything better to do, so the motor I > ordered a couple days back walked up and splatted itself into a deck > chair beside the front door about 10:30 ish this morning. > > That meant I had just about everything on hand to convert the spindle > drive to all metal gears, and all metal sprockets. > > But it wasn't all that easy, Murphy is alive and well. > > While the mounting bracket for a swing mount looked the same, it was > welded to the field sleeve of the motor about 10mm farther from the > flywheel. So I had to stack up washers on the swingbolts to space it to > align the 6 groove j pulley with its load pulley, a 3 incher. > > The crescent slotted bracket to adjust belt tension, once sawed off to > match the old one, misses backing out to align with the lock bolt by > about 10mm, so it appears the pivot bolt holes must be 3 or 4mm farther > from the motor body. Its difficult to make a meaningfull measurement of > that. So a 170mm j6 belt got ordered to replace the 160mm j6. I hope > that won't lay the motor too low. > > I took 3.5mm off the top of the jackshaft frame so it can lift a bit > higher in the old motor pocket under the bed, and a quick test fit seems > to indicate that is enough rise to compensate for swapping a 10 cog XL > sprocket out for a 16 cog XL sprocket. > > On remove the old motor, it turned out that I had pinned the flywheel > onto the shaft by drilling a hole that intersected the flywheel and the > shaft, but I had forgotten that the tap I tried to tap the hole with, > had broken off in the hole. So the piece of tap is still in the hole, > but it has wallered it out around the taps remains such that there is > about a 2 degree looseness now. The flywheel could also be tipped on the > shaft a degree or so, and that was what was causing it to sound as if > the bearings on that end of the motor had turned square. > > IOW the motor would be fine IF I could get the tap out, screw it back on > tight (left hand threads too) And drill & tap a new hole, perhaps for a > roll pin to lock it together. > > This brings up a question re locking the shaft into its bearings. Red > threadlocker seems like it should work. Doesn't. Superglue seems like > it should work. Doesn't. These bearings are a hundred lb or more press > fit on this A2 shaft, and they still walk the shaft thru them given > enough time. > > So, is there a magic glue concoction that will lock the shaft to the > bearings? > > I put some red threadlocker on this flywheel and screwed the armature in > and out several times to distribute it, then drove it on as firmly as I > could. > > My old eyes can't read the microscopic and dirty text on the threadlocker > tube, so I don't know how long till it reaches maximum grip. Does > anyone know? > > And despite the thread locker, should I try to drill & tap it again, only > this time don't break the tap? > > Thanks for any insight you can share everybody. > > Cheers, Gene Heskett --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
