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35ragtop · 05-10-2019, 05:30 AM

Hi guys,
Lawrie recently posted a story on here how he put a new set of 354 gears in a banjo and that it needed a .30 thou shim on the pinion to get the correct mesh. Now this observation by Lawrie sent shivers down the spines of us shadetree mechanics who had built these diffs only addressing pinion preload and backlash and and ring preload. Bugger !
I have built diffs that ended up whining because of mismatched or mis meshed gears. If the noise upsets you ,pull it down and do it all again ,check the mesh with bearing blue or whatever. I think that Lawrie was onto something ( check his posts on this). I have been lucky with new gear sets, but yours may have this .30 mesh issue.
regards Dave h
shadetree mech

05-10-2019, 05:30 AM	#4
35ragtop Senior Member Join Date: Dec 2010 Location: Gold Coast , Australia Posts: 249	Re: Help with a noisy Banjo rear end. Hi guys, Lawrie recently posted a story on here how he put a new set of 354 gears in a banjo and that it needed a .30 thou shim on the pinion to get the correct mesh. Now this observation by Lawrie sent shivers down the spines of us shadetree mechanics who had built these diffs only addressing pinion preload and backlash and and ring preload. Bugger ! I have built diffs that ended up whining because of mismatched or mis meshed gears. If the noise upsets you ,pull it down and do it all again ,check the mesh with bearing blue or whatever. I think that Lawrie was onto something ( check his posts on this). I have been lucky with new gear sets, but yours may have this .30 mesh issue. regards Dave h shadetree mech