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Author Topic: Rotor arm for my S1 Aprilia  (Read 2234 times)
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Posts: 249

« on: 30 December, 2015, 05:25:37 PM »

As is well known I am Aprilia-naive. After the speedometer interlude the engine is back and the engine would not start.
2 problems
A) I have an SU petrol pump that ticks for a variable number of times and then stops - with or without fuel. Getting sorted hopefully without buying new. If not repairable any favourite replacements? (Still on 6V).
B) Also no sparks - originally I thought it was the leads (which are pretty manky) but I am sure the problem is the rotor arm as there has ceased to be a piece of copper from the middle to the end. What is the replacement? Do they exist new and if so where?!

Hope all have a healthy New Year

Brian Hands

1922 Hands Tourer
1934 Augusta standard saloon
1938 Aprilia S1 saloon
1953 Aurelia B10
1965 Flavia Sport
Permanent resident
Posts: 2286

« Reply #1 on: 30 December, 2015, 06:28:41 PM »

I might have a spare, I will post a photo when I get back next week

S1 Aprilia Cabrio, S2 Aprilia, S2 camioncino, S2 furgoncino, , R4 Sinpar, R4 Rodeo, '65 Mini Moke,R60 Tractor,R60 S, Moto Guzzi Ercole, Disco 3, Mini ALL4 JCW, Moto Guzzi Cardellino 63,Fulvia Berlina GT, 2019 Royal Enfield Himalayan,JTD Ypsilon - Mathilda
Senior Member
Posts: 183

« Reply #2 on: 30 December, 2015, 09:36:21 PM »


I still run the mechanical fuel pump without any problems but I believe these electric pumps are quite good if you cannot fix the SU:

You can find brand new distributors on Italian eBay for 150 euros, I think a worthwhile investment as the old one probably has a worn auto advance and they come complete.


1937 1st series Aprilia Berlina
Nissan X-Trail T31 TS
1920 P & M 3 1/2hp {FOR SALE}
John Deere LX188
Permanent resident
Posts: 1295

« Reply #3 on: 26 January, 2016, 02:12:04 PM »
"Technical information only" thread page 4.  Always worth looking here first for information - it's what it's for!

David Wheeler.  Lambdas, Aprilia, Fulvia Sport.(formerly Appia and Thema as well).
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