250b project back on track - MVAgusta.net
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post #1 of 24 (permalink) Old 02-05-2014, 11:04 AM Thread Starter
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250b project back on track

Well the wife and I spent the past two years of our spare time building a new house. We are done and I finally have my new shop space doped out and working. After catching up on some other bike maintenance I have put the 250 back on the lift. Here are a few pics to see where I am. I am playing with different shapes for the tank and seat. I'm getting happy with the basic shape of the tank, but the seat isn't right yet. I have replaced the stock front end with a stouter ceriani. Just about ready to weld up the frame as soon as I settle on the seat shape and the corresponding frame hoop under it.
There is a real dearth of literature to be found for this bike. Does anyone know of a maintenance manual or any exploded diagrams of motor and tranny? I will probably be bugging you guys with questions in the near future, please bear with me.
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Last edited by js vermont; 02-05-2014 at 12:32 PM. Reason: photo edit
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post #2 of 24 (permalink) Old 02-06-2014, 04:50 AM
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There is not much 250B left isn't it.
But hey that looks like a real cool racer to me.
In my eyes You should look for a 4LS front brake like a Ceriani, Fontana or so.
No there are no workshop manuals for the 250 or 350 bikes.
The best and most helpful is the Parts Catalogue.
If You PM me Your e-mail I will send You really good copy in pdf.
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post #3 of 24 (permalink) Old 02-06-2014, 07:51 AM Thread Starter
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Thanks Haupti, I will do that. All I had to start with was the motor, wheels, and the front fork, so yes, not much original 250b but I thought it would be a fun project. I have no idea what happened to the rest of the bike.
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post #4 of 24 (permalink) Old 02-07-2014, 12:25 AM
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I love where it's going. Wish it was on my lift! Those mufflers are spot on. I'm not directly familiar with that front brake but a 200mm Honda CB450 or 305 Superhawk single sided DLS brake will chirp a tire so you may be OK. A disc brake would work even better (and help handling) but looks far more 70's than 60's. It all depends on what you want the finished bike to look like. Keep us posted!


1954 MV 175 CSS Super Sport
1957 MV 175 CS Modello Sport
1967 Motobi 125 Sport
1974 Ducati 750 GT
Left Coast USA
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post #5 of 24 (permalink) Old 02-08-2014, 12:37 PM
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superb project !

Maybe you should slightly increase the volume of the tank and slightly reduce the height of the seat shape

By cons, do not change the color of your lovely SF 750 ...

Appel de phare

Xavier
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post #6 of 24 (permalink) Old 02-23-2014, 11:31 PM
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Where did you source those lovely curvaceous megaphones?


1954 MV 175 CSS Super Sport
1957 MV 175 CS Modello Sport
1967 Motobi 125 Sport
1974 Ducati 750 GT
Left Coast USA
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post #7 of 24 (permalink) Old 02-24-2014, 02:35 AM
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Quote:
Originally Posted by hulagun View Post
Where did you source those lovely curvaceous megaphones?

Hummm Magni I think ... http://www.magni.it/kit_tubi_scarico.htm

Last edited by Xav; 02-24-2014 at 02:40 AM.
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post #8 of 24 (permalink) Old 02-24-2014, 08:25 AM Thread Starter
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HI, yes they are from Magni. I love the look of them. I have changed the seat profile a bit lower and I am starting to like it. Will post another pic when a bit more progress has been made. I have a question though. I dont seem to find a tach drive on this engine. Did the 250b's run a tach?
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post #9 of 24 (permalink) Old 02-24-2014, 10:18 AM
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I don't know for the 250 B, but on my 350 BE (1973) the tach drive is just behind the level stick

Xavier
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post #10 of 24 (permalink) Old 03-07-2014, 02:41 PM
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1969 250b

Hey JS Vermont, I recently went to a classic bike show and there was a 1969 250B, but it looks very different from what you show in the original post. In particular, I am looking at the frame, compared with these:





How certain are you that what you have is a 250B (or, that the one pictured here isn't)? I don't know squat about these , so I'm just trying to learn.

Cheers,
Gitano
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