Early sport

The 3 1/2 forum
lambs
Posts: 27
Joined: 18 Jan 2017 23:22
Location: Melbourne, Australia

Re: Early sport

Post by lambs »

Looks like a good job.....you've got probably the hardest part to do. I helped a friend replace a damaged trail bike rim years ago.....looked a simple job, but what a PITA :roll:

Witness marks on the hub give big clues as to the original spoke orientation. Alternate holes will probably have similar on the 'inside' face. A starting point, at least.
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1974 Moto Morini 3 1/2 Sport
1972 Moto Guzzi V7 Sport
1975 Moto Guzzi 850-T3
1976 Moto Guzzi 750-S3 (owned since new)
1978 Moto Guzzi 850 Le Mans Series 2
1983 BMW K100
1983 BMW K100RS

1974 260Z
1989 R32 GTR
Mepstein
Posts: 147
Joined: 27 Apr 2016 02:38
Location: Newark, Delaware
Location: Newark, Delaware, USA

Re: Early sport

Post by Mepstein »

One down, 3 to go.
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AntietamClassicCycle
Posts: 187
Joined: 15 Oct 2012 15:03
Location: Rohrersville, MD, US
Location: Rohrersville, MD, USA
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Re: Early sport

Post by AntietamClassicCycle »

Beautiful!
Blue Morini USA
Posts: 12
Joined: 31 Oct 2016 14:44
Location: East Norriton, USA

Re: Early sport

Post by Blue Morini USA »

Looks great Mark. Keep up the good work !
Mepstein
Posts: 147
Joined: 27 Apr 2016 02:38
Location: Newark, Delaware
Location: Newark, Delaware, USA

Re: Early sport

Post by Mepstein »

Thanks
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Paz2112
Posts: 126
Joined: 07 May 2015 12:32
Location: Northern Ireland
Location: Northern Ireland

Re: Early sport

Post by Paz2112 »

Superb job on those rims. Great work.
My Other Italian V-Twin is an Italian V-Twin
Mepstein
Posts: 147
Joined: 27 Apr 2016 02:38
Location: Newark, Delaware
Location: Newark, Delaware, USA

Re: Early sport

Post by Mepstein »

Trying to get parts ready for reassembly.
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hombre
Posts: 625
Joined: 09 Apr 2006 16:15
Location: Amsterdam/Alessandria
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Re: Early sport

Post by hombre »

Looking good, I am also rebuilding an old Sport, but from a pile of parts (see other post about the crank). Mine has framenumber 5009... The engine number is only applied to exportmodels, in Italy you won't find engines with numbers...
Mepstein
Posts: 147
Joined: 27 Apr 2016 02:38
Location: Newark, Delaware
Location: Newark, Delaware, USA

Re: Early sport

Post by Mepstein »

The engine came to me in parts. Very rough and incomplete. I've been working with someone to resolve that.
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lambs
Posts: 27
Joined: 18 Jan 2017 23:22
Location: Melbourne, Australia

Re: Early sport

Post by lambs »

From the length of those drive belts you have one of those extremely rare OHC engines :wink: 8)
1974 Moto Morini 3 1/2 Sport
1972 Moto Guzzi V7 Sport
1975 Moto Guzzi 850-T3
1976 Moto Guzzi 750-S3 (owned since new)
1978 Moto Guzzi 850 Le Mans Series 2
1983 BMW K100
1983 BMW K100RS

1974 260Z
1989 R32 GTR
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hombre
Posts: 625
Joined: 09 Apr 2006 16:15
Location: Amsterdam/Alessandria
Contact:

Re: Early sport

Post by hombre »

I saw some rusy bits, but a crank that rusty is somewhat overdone... Was it underwater?
Mepstein
Posts: 147
Joined: 27 Apr 2016 02:38
Location: Newark, Delaware
Location: Newark, Delaware, USA

Re: Early sport

Post by Mepstein »

Yes, most of the parts were pretty trashed. I purchased a partial engine (bottom end) from a fairly local Morini owner. Found a nos racing cam and traded it for a nos sport cam. The cylinders were rusted so we bored them to 375 and purchased new pistons from NLM. We are able to use the numbers matching case so that is a bonus. I'm sure there will be other issues but one thing at a time
Mepstein
Posts: 147
Joined: 27 Apr 2016 02:38
Location: Newark, Delaware
Location: Newark, Delaware, USA

Re: Early sport

Post by Mepstein »

I noticed a slight difference in the front hubs between the early bike and the '74. They added a lip for a rubber seal on the drive side cover plate on the '74. On the early bike, the inside of the cover plate does not have a lip and is symmetrical (other than the opening for the speedo drive).
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Early
Early
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Mepstein
Posts: 147
Joined: 27 Apr 2016 02:38
Location: Newark, Delaware
Location: Newark, Delaware, USA

Re: Early sport

Post by Mepstein »

'74 has a lip for the rubber seal
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norbert
Posts: 750
Joined: 15 May 2007 15:15
Location: Lübeck/Germany

Re: Early sport

Post by norbert »

Mine is the same (although a Benelli Tornado one). This rubber seal is important to protect the drum from the grease of the speedo drive. It took me a year to find one (the seal, to find the brake took some more years :lol: ).
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Dulcinea once was a `74 Strada but has become a bit more sporty now :wink: This project took me nearly 15 years, but now it´s done :P

First summer day today here in Schleswig-Holstein!
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