John Martindale wrote: > It is possible to grease some sealed bearings by gently prising up the > seal lip with a syringe needle and injecting grease underneath.
I suppose somewhere there are sealed bearings somewhere that you could pry out, but not the ones we're talking about at http://www.n56ml.com/kgear.html . As you may recall, the "sealed" bearings are the "good" ones...they have greased bearings and an elastomeric seal to keep water out. Looking at http://www.n56ml.com/gear/10031311m.jpg (also enclosed), the one on the left is sealed, but the two on the right are only "shielded". Getting this steel shield off to replace the bearings is a real effort requiring a press, and when you're done, the shield will likely be deformed. Shielded is probably good enough for what we want, unless you run through a lot of water, IF the bearing was greased before the shields went on. The takeaway from the photo is that greased and sealed bearings will likely last the life of the tire and then some, whereas shielded (or sealed) bearings won't last long with no grease on the bearings, which is what some companies will sell you if you let them. See http://www.n56ml.com/gear/10031320m.jpg ... Mark Langford ML at N56ML.com website at http://www.N56ML.com -------------------------------------------------------- -------------- next part -------------- A non-text attachment was scrubbed... Name: tailwheels.jpg Type: image/jpeg Size: 62498 bytes Desc: not available URL: <http://list.krnet.org/mailman/private/krnet_list.krnet.org/attachments/20130829/dcde9f1f/attachment.jpg>
