[Fot] Crown and pinion gear break in

[van.mulders.marcel at telenet.be]

This is interesting. I believe there are only these 2 makes and that neither are bad. 
The gears that got very hot in my car was an Oerlikon set but I think that the reason for that is the pinion teeth : it is an 4.31 ratio set with only 9 teeth on the pinion and these teeth are longer and very curved and maybe they are generating more heat? 
In general, whatever method or special tools are used to install the gears, one has to use his senses : looking at the mesh pattern with Dykem blue or some other paint, listen for a wining sound, feel for heat and smell for burnt oil! 
Marcel 

Van: "fot" <fot at autox.team.net> 
Aan: "fot" <fot at autox.team.net> 
Verzonden: Maandag 10 september 2018 08:36:05 
Onderwerp: Re: [Fot] Crown and pinion gear break in 



Maybe something to know about Diffs: 



On Triumphs, these days are two different types of gear available: 



    1. Gleason gears 
    2. Oerlikon gears 




The workshop manual is referring to Gleason gear type. If you got an Oerlikon type of gear (the more modern one), and you try to set it up with the Workshop manual, then the gear will fail. 

This is because, that the contact pattern, which is shown in the manual, is mirrored at an Oerlikon type. 



So most Oerlikons die of wrong contact pattern, with the pinion too deep in the Crown wheel, almost touching the carrier. 



Cheers 

Chris 

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