Author Topic: Laverda 750 SF clutch  (Read 1150 times)

Offline CLEMTOG

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Re: Laverda 750 SF clutch
« Reply #15 on: November 09, 2019, 15:23 »
am I getting this straight Ron,
in 40 years of SF0 owning riding and maintaining, you never did grind off those clutch cover rivets rivets, remove the steel disc, tap the threads M6 or M7 and then renew the rubber and bolt back on the face plate?

astounding
how many miles from start to finish?

CLEM

Offline Laverda SF

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Re: Laverda 750 SF clutch
« Reply #16 on: November 19, 2019, 18:41 »
Clem: After some 40 years I put about 27000 Km on my SFO - So that might be your answer - However; I did hundreds of thousands miles on various motorcycles in my life and a survivor - That SFO was the one I kept and probably my favorite till I quit riding 3 years ago and then I sold her. No more motorcycles - Quit riding at 70 years old.

Tore her apart twice during them years. Rotten gaskets and rotten rubber seals where the main culprits for rebuild.

Had to wash the clutch pack with lacquer thinner and rough with 280 grit after I gummed it up with Teflon. Tack welded the starter clutch back plate - Wire the starter relay to ground through the transmission neutral switch and replaced the pistons, rings, touched up the valve seats, reground the valves, honed the cylinders only because the Head Gasket and main seals rotted out. Didn't have to replace the valve springs or change the rubber crush drive rubbers.

Other then I would highly recommend replacing the Valve Springs with every engine tare down or your NOT getting close to 8000 rpm.
« Last Edit: November 19, 2019, 23:14 by Laverda SF »

Offline Dellortoman

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Re: Laverda 750 SF clutch
« Reply #17 on: November 19, 2019, 22:08 »
in 40 years of SF0 owning riding and maintaining, you never did grind off those clutch cover rivets rivets, remove the steel disc, tap the threads M6 or M7 and then renew the rubber and bolt back on the face plate?

I think the answer is no. I presume he never had to replace the cush drive rubbers in the clutch. That figures if it only had 27,000 km on the clock.
Location: Tasmania, Approx 4253S 14723E

Offline Laverda SF

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Re: Laverda 750 SF clutch
« Reply #18 on: November 19, 2019, 22:47 »
Dellortoman" You should have bought my SF0 for $8,500 CDN 2 years ago - She was Prime, although not quit an 8000 rpm'r, perhaps a 7600 rpm'r ;o)

In all I can not believe how much them two small Breganzie 750 SF pistons can deliver so much power!
« Last Edit: November 20, 2019, 01:39 by Laverda SF »

Offline Dellortoman

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Re: Laverda 750 SF clutch
« Reply #19 on: November 20, 2019, 02:21 »
Dellortoman" You should have bought my SF0 for $8,500

If it had been in Australia, I would have seriously considered it. That's not bad value for well a maintained low mileage 750.  Whoever bought it got a bargain. Do you know if he is a member of this forum?
Location: Tasmania, Approx 4253S 14723E

Offline Laverda SF

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Re: Laverda 750 SF clutch
« Reply #20 on: November 20, 2019, 02:44 »
Dellortoman: Can't 't reveal his name under contract but can say he is of Italian descent and lives in Winnipeg Canada.

He does own a few Laverda 3 Cly's and perhaps a couple of Ferrari's. Whether he's a member of this forum , I can not say and would not want to speculate. One thing I do know is that my Breganzie has gone a good home ;o)

Jim was interested in her but unfortunately he was off fighting forest fires and we became outta touch during the sale.
« Last Edit: November 20, 2019, 03:27 by Laverda SF »

Offline helicopterjim

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Re: Laverda 750 SF clutch
« Reply #21 on: November 20, 2019, 04:57 »
Dellortoman: Can't 't reveal his name under contract but can say he is of Italian descent and lives in Winnipeg Canada.

He does own a few Laverda 3 Cly's and perhaps a couple of Ferrari's. Whether he's a member of this forum , I can not say and would not want to speculate. One thing I do know is that my Breganzie has gone a good home ;o)

Jim was interested in her but unfortunately he was off fighting forest fires and we became outta touch during the sale.

I do know there is a mennonite in the Peg with a 3 cylinder. Cool to know there are a few more!

I'll find ye one of these days Ron!
74 SFC
72 SF
74 3C
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 but I do have a Chang Jiang CJ750 with a sidecar.

Chilliwack, British Columbia

Offline Laverda SF

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Re: Laverda 750 SF clutch
« Reply #22 on: November 21, 2019, 23:47 »
A Canadian Italian, Mennonite Shylock Immigrate; Thankfully God Forgives Breganzie  ;o)
« Last Edit: November 22, 2019, 00:03 by Laverda SF »

Offline helicopterjim

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Re: Laverda 750 SF clutch
« Reply #23 on: November 22, 2019, 00:05 »
A Canadian Italian, Mennonite Shylock Immigrate; Thankfully God Forgives Breganzie  ;o)


Hahahahahahahahahahahahahahahahahahahahahahahahaha!!!!!!!!!!
74 SFC
72 SF
74 3C
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 but I do have a Chang Jiang CJ750 with a sidecar.

Chilliwack, British Columbia

Offline Laverda SF

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Re: Laverda 750 SF clutch
« Reply #24 on: November 22, 2019, 02:06 »
For Piranha Brother 2: I did keep all my Original Laverda Branded Bolts and are mounted on the Bike for SHOW. Would sooner have used replacement Stainless Steel 8 head Allens considering for all the time it took me to make them Original Laverda bolt heads look pretty.

As far as any confusion for a Nut & Bolt combination, I depend on RASTALL CA " https://www.google.com/search?client=firefox-b-d&q=rastall+canada"  whom is a provider for most all the nut a bolt's in regards to Mining Canada's natural resources. Whether they ship internationally to individuals I do not know.

Jim; If you need a regulated Nut or Bolt for your helicopter - These guy's can find it - Price wise "descent" considering our dollar.
« Last Edit: November 22, 2019, 03:48 by Laverda SF »