So I had an oil leak at the rear hub. I took off the hub and saw that there was a spacing of about 2 mm between the bearing and the seal. I ranted and raved on the INTL SCOOTERIST BBS FORUM (www.scooterbbs.com) about how the bearing must be different, the seal is wrong, please help me. Some very kind souls named Bluecati, DS and MDchanic pointed out gently how dumb I was... the seal works on the wheel drum hub, not the bearing face. If you don't know what I am talking about, trust me, I was stupid. I even made the nice attached picture to show the problem. The real problem was my brain. Again, the smooth hub slides over the grooved shaft and the seal (removed for this pic) works on it. I would also mention that the castellated nut is reverse threaded and I spent 45 minutes before I remembered that but the humiliation would be too much. So now I just need to caliper the hub and ensure I get the right oil seal inside diameter. The good news is that with this fix and some carb work, the engine is complete!
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