Author Topic: 4s Camshaft  (Read 1469 times)

Offline laverdaparts.se

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4s Camshaft
« on: January 12, 2018, 17:30 »
Start to renovate a 1973SF and missing the right handside camshaft and its a 4S anyone ?
Bjorn
1963 Scooter
1969 750GT
1973 SF
1977 3cl
1979 500
1979 1200 30:th
1980 Jota
1982 RGS
1983 Corsa
1987 RGS
1988 SFC

Offline LJ

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1986 RGA Jota Sprint 
1974 3C
1973 750GT              
1971  750SF 


 I was born to make mistakes,not to fake perfection

Offline laverdaparts.se

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Re: 4s Camshaft
« Reply #2 on: January 12, 2018, 22:12 »
U guys are the best to find parts.
1963 Scooter
1969 750GT
1973 SF
1977 3cl
1979 500
1979 1200 30:th
1980 Jota
1982 RGS
1983 Corsa
1987 RGS
1988 SFC

Offline Paul Marx

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    • Les motos de Paul
Re: 4s Camshaft
« Reply #3 on: January 13, 2018, 06:08 »
U guys are the best to find parts.

You're pretty good yourself.

Paul

Offline Piranha Brother 2

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  • It was once a 1973 SF750
Re: 4s Camshaft
« Reply #4 on: January 19, 2018, 23:23 »
4S was the '72 SF0 wasn't it? My '73 SF1 had a 5/1 I think. Problem is they aren't stamped ... well, my original cam wasn't and the one I've got from another SF1 is also unstamped - the profile is very similar to an SFC 5/C. Wolfgang calls the 5/1 the 'shaker cam' but my SF1 was brilliant with the original cam. Other SF owners were amazed at how smooth it was. I'll happily fit the one I think is a 5/1 to bike #2.
What ... leave it standard??!!

Offline Ernesto

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Re: 4s Camshaft
« Reply #5 on: January 19, 2018, 23:58 »
Quote
4S was the '72 SF0 wasn't it?
Yes, 750S and SF up to 72.
Quote
SF1 is also unstamped - the profile is very similar to an SFC 5/C
Yes, the cams of 5/1 and 5C
have the same shape. But the timing is different. At 5/1 the angle between the cams seems to be app. 90,
on 5C it's wider.

Ernesto

Offline laverdaparts.se

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Re: 4s Camshaft
« Reply #6 on: January 20, 2018, 11:56 »
I got a new set of 5S on the shelf but those goes to another object and as stated I like to get a 4s to get a complete 4S set of cams.
Unmarked cams are normally GT cams and gots a stack of those too.
1963 Scooter
1969 750GT
1973 SF
1977 3cl
1979 500
1979 1200 30:th
1980 Jota
1982 RGS
1983 Corsa
1987 RGS
1988 SFC

Offline helicopterjim

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Re: 4s Camshaft
« Reply #7 on: January 20, 2018, 21:49 »
I have a set of worn cams ....... I have been thinking of taking them to a fellow who does Laverda cams and having them reconditioned. I don't expect that will happen too soon but I can be provoked.

I also have a new LHS 4S cam. It is the one with the tachometer drive.
« Last Edit: January 20, 2018, 21:58 by helicopterjim »
74 SFC
72 SF
75 3C
79 (81) Formula Mirage 1200
Various Ducati's, Guzzi's, Puch's ... a BSA Sloper and maybe even an R90
I don't have a 1977 Honda XL 175

Chilliwack, British Columbia

Offline LJ

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Re: 4s Camshaft
« Reply #8 on: January 21, 2018, 21:56 »
Did you win them Bjorn?
1986 RGA Jota Sprint 
1974 3C
1973 750GT              
1971  750SF 


 I was born to make mistakes,not to fake perfection

Offline laverdaparts.se

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Re: 4s Camshaft
« Reply #9 on: January 22, 2018, 17:55 »
Yes I got them.
More parts on the shelfs.
1963 Scooter
1969 750GT
1973 SF
1977 3cl
1979 500
1979 1200 30:th
1980 Jota
1982 RGS
1983 Corsa
1987 RGS
1988 SFC

Offline v2ventiler

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Re: 4s Camshaft
« Reply #10 on: January 22, 2018, 19:38 »