79 Moto Guzzi Rebuild

Scout63

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The trans has three shafts - clutch input, main and lay output. The free gears run on needle caged bearings. Shaft support bearings in either end of the case are robust and very easy to remove and refit. Every other dog is shortened to ease engagement. Drum shifter. Lots of room in the case. Seems trickier than the Norton box to assemble but I am still figuring it out.
 
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Was wondering because from that prior pic access appears to be good even for my oversized paws. All in all they seem a very friendly bike to work on.
 
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The trans has three shafts - clutch input, main and lay output. The free gears run on needle caged bearings. Shaft support bearings in either end of the case are robust and very easy to remove and refit. Every other dog is shortened to ease engagement. Drum shifter. Lots of room in the case. Seems trickier than the Norton box to assemble but I am still figuring it out.
If you get stuck I can help guide you through it., I own 1 Norton but numerous Guzzis,I have done at least 20 gearboxes for myself and others,Have you shimmed the shift drum yet? Yes they can be boom proof but some riders have an even bigger bomb and still manage to blow them up. I had to send in the "Guzzi Mafia" to one bloke so they could have quiet word with him about crimes against a Guzzi gearbox.::)) Brett
 

Scout63

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Hi Brett. I haven’t shimmed the gearbox yet. I am waiting for a shift drum detention pawl to come in from Harpers and then I can check operation and endplay. I’m just taking it slow.

Rick - parts are available but seem to be a bit more expensive. Between this forum, Old Britts and the Norton Manual and parts book I found the Commando to be an easy build. The Guzzi seems better thought out and sturdier but more of a niche marque with slightly fewer resources. Ben
 

Scout63

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It’s been stalled for a bit. I just got the call that my heads are done. I’ve also been trying to figure out assembly of the rear gearbox cover/ shift mechanism. It’s giving me fits. Front hub is ready for lacing also. Pictures soon.
 
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