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16 Dec 2020
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1957 Rossa extra 12 years 7 months ago #544

  • pedro
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Hi everyone, I'm looking for some help with my 175cc Rossa Extra, I bought the bike about a year ago but have not yet got it running very well, I have been unable to find any technical data for this bike, I need to know carburettor settings, ignition and valve timing details etc. I have found data on just about every other Gilera single but not the Rossa Extra, it has a delorto UB22BS 25mm carb fitted. Any help, copies of a manual etc. would be gratefully recieved. Pedro.

Re: 1957 Rossa extra 12 years 7 months ago #545

  • pppdrive
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Hi Pedro, I don't have the Rossa Workshop Manual, but I would 'suspect' that the Giubileo Manual would be fairly similar and I can send you a copy of that (in pdf format)if it would help. I also have a pdf sheet of 'other models info' which does have contact details purporting to be able to give technical information on Gilera bikes. Another possibility is to contact Piaggio-Gilera in London who do have a technical section to answer queries.
Paul

Re: 1957 Rossa extra 12 years 7 months ago #546

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Very kind of you Paul, but I have the Giubileo manual and there are some significant differences, 25mm carb instead of 22mm, compression ratio and I would suspect that the ignition and valve timing would be different, it really is quite a different motor. The Rossa Extra was a popular little bike in it's day (my first bike) but there is suprisingly little info on them these days. The "other models" info would be helpful though, my email is This email address is being protected from spambots. You need JavaScript enabled to view it. Thanks once more, Pedro.

Re: 1957 Rossa extra 12 years 7 months ago #547

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e-mail to be sent in a few minutes, hope it helps. Paul

Re: 1957 Rossa extra 12 years 7 months ago #561

  • Kano Nordi
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Hi Pedro,
It could be worthwhile going on the english section of club-gilera.de, follow the link from the GeN home page.
They seem to have a much bigger membership compared to GeN and have a wider variety of bikes owned.
Good luck
John

Re: 1957 Rossa extra 12 years 7 months ago #565

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Thanks John, I have put a plea for help on the forum, we will see what transpires. Pedro.
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