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Discussion Starter #1 (Edited)
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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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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Discussion Starter #3
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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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!
 

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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 ... :D

Appel de phare

Xavier
 

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Where did you source those lovely curvaceous megaphones?
 

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Discussion Starter #8
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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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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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. :wtf: 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 :loser:, so I'm just trying to learn.

Cheers,
Gitano
 

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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. :wtf: In particular, I am looking at the frame...
G,
Believe it or not....not a factory frame..:)
 

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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. :wtf: 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 :loser:, so I'm just trying to learn.

Cheers,
Gitano

Bonjour

This is the original frame

The frame of the JS Vermont's bike is a racing frame or a home made frame. I like his frame, I think he have a better road holding than the original one

Xavier
 

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Discussion Starter #13
yeah, I have no idea what happended to the original bike, wish I had more of it. When I obtained the project, it was just the motor, wheels and forks, which are available if anyone needs them. I have no idea what I am doing, just always wanted to build my own.
I wonder if these bikes ever had a tachometer?
 

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Salut JS Vermont

After some research on "Google", I think it depends on the type and the vintage (year of production)

I found some 250 with rev counter as this

http://www.flickr.com/photos/klausnahr/6826846344/

and others without ...

http://www.carpictures.com/vehicle/07KEB570918530/MV-Agusta-250B-1967#

http://thebikemuseum.com/master_view.php?id=48&MV Agusta&250 Raid

http://thebikemuseum.com/master_docs.php?id=14

http://www.mv-agusta-club-schweiz.c...assisch/MV_Agusta250_B_Reparatur_Handbuch.pdf

Bonne continuation

Xavier
 

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Discussion Starter #15
Hi Xav, Thanks for the research, the parts book clearly shows a tach and cable. I havent pulled the motor apart yet, but for the life of me, I cannot find the tach drive. I dont know production numbers, but I believe this to be around the 400th produced. I think that would make it early, maybe made in 1967. Imported to the US in 1968. Maybe early ones didnt have a tach drive? Is Dorian around? Its probably right in front of me and I am overlooking it.
 

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JS Vermont, I don't have a good picture of it, but the 1969 250B that I showed photos of had only one dial, built into the headlight bucket. Restore that baby - get her running!
 

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[Quote = js Vermont; 908562] Salut Xav, Merci pour la recherche, les parties réserver montre clairement un tachymètre et le câble. Je nai tiré le moteur en dehors encore, mais pour la vie de moi, je ne peux pas trouver le lecteur de tachymètre. Je ne sais pas le nombre de production, mais je crois que c'est autour de la 400e produite. Je pense que ce serait rendre tôt, peut-être fait en 1967. Importé aux États-Unis en 1968. Peut-être au début ceux n'ont pas un lecteur de tach? Dorian est autour? C'est probablement juste en face de moi et je donne sur elle. [/ Quote]


Excusez mon pauvre anglais technique ... Je crois que j'ai mélangé termes

Lorsque vous écrivez "... compte-tours ..." vous parler de compte-tours ou compteur de vitesse?

S'il s'agit de vitesse, vous avez un pad d'entraînement à droite de la roue avant (fig. 28 page 11 des livres de pièces)

Salut

Xavier
 

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Discussion Starter #18
Hi Xavier, I am talking engine revolutions, tachometer. In that parts book, its on Tab 14 part number 1. In the 350 version of this engine, the tachometer drive is behind the oil dipstick.
 

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Ah ah ah! I just realized that I copy / paste the control on French Google translation of what I wrote in English ... The sign of age ? :D

Here are the differences I found between the 250 and 350

350B
MV_350B_Turismo_CPR.jpg

MV_350B_Turismo_prise compteur.jpg

250B
MV_Agusta250_B_prise comptours.jpg

MV_Agusta250_B_prise compteur.jpg

Xavier
 

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Xavier You are right I guess.
The 250B manual of 1969 and the parts catalogue of 1969 don't have a rev counter.
I will call it rev counter since it can get very confusing with the use of tachometers in different languages.
I think the rev counters appeared with launch of the 350B only.
 
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