Benelli 750 sei

If in doubt, or it doesn't seem to fit elsewhere - put it here.

Re: Benelli 750 sei

Postby ATinkerer » Sun Oct 10, 2021 2:49 pm

Looks really nice.
Be careful around some of us, drool marks can stain.

Gordon
If it isn't smoking, it's broken.
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Re: Benelli 750 sei

Postby Lotus54 » Thu Oct 14, 2021 3:57 pm

I got my old Alemite spin balancer out to ‘tune up’ the balance. It will spin it up well over 100mph.
But the imbalance is showing up about 50-60.

It has been quite some time since I’ve used it, so gotta remember how. I learned on one just like this in the 3 hour autoshop in high school.
Tube driven Alemite balancer.
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1976 OSSA Super Pioneer- 78 Benelli 750 sei,72 250 2C Benelli, 68 Benelli Dynamo trail, 76 OSSA GPII Phantom, Beta XTrainer 300, Lotus Elan S3
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Re: Benelli 750 sei

Postby John H » Fri Oct 15, 2021 10:09 am

Wow! That's a real relic. Pretty cool that it still works, with tubes too!
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Re: Benelli 750 sei

Postby Lotus54 » Sun Oct 31, 2021 4:27 pm

Took a ride to the Ridge today.
A bit icy below the Tunnels, but it sure sounded great going through.
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1976 OSSA Super Pioneer- 78 Benelli 750 sei,72 250 2C Benelli, 68 Benelli Dynamo trail, 76 OSSA GPII Phantom, Beta XTrainer 300, Lotus Elan S3
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Re: Benelli 750 sei

Postby John H » Sun Oct 31, 2021 6:16 pm

Your rewards for such a beautiful restoration. Any project would be easy after this one.
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Re: Benelli 750 sei

Postby ClineDesign » Thu Nov 04, 2021 2:51 pm

:D :D

Nice work! Hope to see it in person some day.
Always wear protective gear. Usually SPF 30 will do.
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Re: Benelli 750 sei

Postby ClineDesign » Thu Mar 24, 2022 7:17 pm

I briefly saw your Benelli heading east on 101 past WalMart Thursday afternoon. Sweet ride!
Always wear protective gear. Usually SPF 30 will do.
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Re: Benelli 750 sei

Postby Lotus54 » Thu Mar 24, 2022 7:24 pm

I took it out for a spin this afternoon- first time in months.
It was good to get it out.

Thanks! It is super fun
1976 OSSA Super Pioneer- 78 Benelli 750 sei,72 250 2C Benelli, 68 Benelli Dynamo trail, 76 OSSA GPII Phantom, Beta XTrainer 300, Lotus Elan S3
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Re: Benelli 750 sei

Postby Lotus54 » Thu Jun 30, 2022 6:07 am

I’ve been getting the sei out for rides when I have time and weather is nice.
I noticed and oil leak on the countershaft side. I was thinking perhaps the clutch rod or countershaft seals were leaking. But it turns out the new oil pump I fit was leaking.
I still had the original, which seemed to be fine but a new one was not that much $$ so just replaced it. I refit the original and then pulled apart the new one. The main seal was not holding for some reason, although it looked ok. I will investigate further when I have time and get it back so I can use it if needed.

Now no more oil leak. I’m about due to check valve clearances again and I picked up a NOS carb set so I will install that. The other ones were ok, but nothing like having new.
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Re: Benelli 750 sei

Postby John H » Fri Jul 01, 2022 7:43 am

Nice to see someone else making progress on projects. The sei looks nice with the beautiful background, I'd frame that one..
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