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Laverda Forum => For Sale => Topic started by: angonemoto on October 28, 2019, 15:13

Title: 73 SFC replica for sale
Post by: angonemoto on October 28, 2019, 15:13
https://www.ebay.com/itm/1973-Other-Makes-Laverda-SFC/184011422179?hash=item2ad7ef79e3%3Ag%3AbesAAOSw3nNdrRf6&LH_ItemCondition=3000%7C1000%7C2500

Here's something for your upcoming Halloween Great Pumpkin ride. 73 SFC replica with 16k miles.
Why is it that the air duct on the front brake is tilted downward? It looks odd, doesn't it?
Title: Re: 73 SFC replica for sale
Post by: Tippie on October 28, 2019, 17:06
1973 was SF1 with 36mm carbs etc. Low miles on the donor speedo, and that the instrument bracket is in tact points to little riding.
Title: Re: 73 SFC replica for sale
Post by: laverdas on October 28, 2019, 17:20
Looks like series 2 drum brakes so not 1973 which the clocks and bracket are. Air scoop has just not been timed up right before tightening the spindle.
Very nice bike.
Regards Andy
Title: Re: 73 SFC replica for sale
Post by: sfcpiet on October 28, 2019, 17:26
Horrible lash-up of a model that never was...    ::)

Replica?  At best, a wannabe.  Too many incorrect details to list, with lots of BS to lure the uninitiated.

piet
Title: Re: 73 SFC replica for sale
Post by: MarnixSFC on October 28, 2019, 18:28
Itís a 1972 SF.

Marnix
Title: Re: 73 SFC replica for sale
Post by: Paul Marx on October 28, 2019, 18:48
RIP.

Paul
Title: Re: 73 SFC replica for sale
Post by: SimonR501 on October 28, 2019, 19:17
I am certainly not an SFC 750 expert, but I thought their frames were nickel plated?

Any road up! The long epistle of a description has to be worth a grand surely?
Title: Re: 73 SFC replica for sale
Post by: Paul Marx on October 28, 2019, 19:48
I am certainly not an SFC 750 expert, but I thought their frames were nickel plated?

Any road up! The long epistle of a description has to be worth a grand surely?

Nearly all the frames were zinc plated.

Nickel is too flash. These are working bikes, not for poseurs or living room addicts.

 ;D

Paul
Title: Re: 73 SFC replica for sale
Post by: SimonR501 on October 28, 2019, 21:37
Thanks Paul! I shall put that in the memory bank.
Title: Re: 73 SFC replica for sale
Post by: sfcpiet on October 28, 2019, 22:13
I was under the impression they were originally cadmium plated.  With time, the plating does discolour a bit, I'd expect zinc to become a lot darker.

piet
Title: Re: 73 SFC replica for sale
Post by: Piranha Brother 2 on October 28, 2019, 23:32
My definition of everything I never want in any of my Laverdas. Why bother? Really? If it was a std 1972 SF0 it would probably be ridden a lot more.
Title: Re: 73 SFC replica for sale
Post by: Dellortoman on October 29, 2019, 00:06
Blimey! You blokes are a tough crowd. The bike looks OK to me, but what do I know about 750s?
Title: Re: 73 SFC replica for sale
Post by: sfcpiet on October 29, 2019, 00:29
Blimey! You blokes are a tough crowd. The bike looks OK to me, but what do I know about 750s?

Cam,

If you read the blurb, you might realise just how wrong this bike is.  If it were offered as a cafe'd SF, OK.  But it is offered as a SFC replica, no less.  And a 1973 model to boot!  Just ask Marnix or Steph how difficult it is to replicate that particular model.  Imo, a replica REPLICATES the original, as close as possible.  This only looks very vagely similar... to a 8 year-old maybe.

Then there's the "ridden once a month" BS.  With a loose chain adjuster?  Un-secured brake cable adjuster?  Fat chance.  Just a couple of points that hit me while looking through the pics, bound to be dozens more.

piet
Title: Re: 73 SFC replica for sale
Post by: Vince on October 29, 2019, 00:31
I used to think Galing a frame would be great long-lasting protection but after getting my dirtbike box trailer hot dip galled it went from an easy one-hand lift and push to a full-blown backbreaker. It's insanely heavy now, but definitely no rust in the last 20 years it been in my back yard. Odd choices for a lightweight race bike.
Title: Re: 73 SFC replica for sale
Post by: IAG on October 29, 2019, 01:01
Stock sidecovers look cobbly-
Title: Re: 73 SFC replica for sale
Post by: helicopterjim on October 29, 2019, 03:18
I was under the impression they were originally cadmium plated.  With time, the plating does discolour a bit, I'd expect zinc to become a lot darker.

piet

Zinc ...... cadmium is a goldish  colour 
Title: Re: 73 SFC replica for sale
Post by: Paul Marx on October 29, 2019, 06:53
Zinc ...... cadmium is a goldish  colour

Well, yes and no.
Cadmium would seem to age quite nicely.

My SFC has received cadmium.
It did seem very latin pimp on the photos I got and can't find but on the later photos appears quite correct.

Paul
Title: Re: 73 SFC replica for sale
Post by: sfcpiet on October 29, 2019, 06:54
I used to think Galing a frame would be great long-lasting protection but after getting my dirtbike box trailer hot dip galled it went from an easy one-hand lift and push to a full-blown backbreaker. It's insanely heavy now, but definitely no rust in the last 20 years it been in my back yard. Odd choices for a lightweight race bike.

Vince,

Galvanising/electro-plating is a completely different process to hot dipping.  Galvanising uses electricity to deposit a microscopic thin layer of metal on something, hot dipping is essentially painting with molten metal.

Reckon the plating on the SFC frames would have been lighter than primer and paint.  Moot point though, considering what those frames weighed in the first place...

piet
Title: Re: 73 SFC replica for sale
Post by: Vince on October 29, 2019, 07:14
Good to learn new stuff, thanks mate.
Title: Re: 73 SFC replica for sale
Post by: Lav the impala on October 29, 2019, 07:56
Vince,

Galvanising/electro-plating is a completely different process to hot dipping.  Galvanising uses electricity to deposit a microscopic thin layer of metal on something, hot dipping is essentially painting with molten metal.

Reckon the plating on the SFC frames would have been lighter than primer and paint.  Moot point though, considering what those frames weighed in the first place...

piet

Galvanization or galvanizing is the process of applying a protective zinc coating to steel or iron, to prevent rusting. The most common method is hot-dip galvanizing, in which the parts are submerged in a bath of molten zinc.

Electroplating is the process of plating one metal onto another by hydrolysis, most commonly for decorative purposes or to prevent corrosion of a metal. There are also specific types of electroplating such as zinc plating, copper plating, silver plating, and chromium plating
Title: Re: 73 SFC replica for sale
Post by: Paul Marx on October 29, 2019, 08:17
Bob Heath used to race his G50 with an unpainted frame to gain a few grams.
Apparently quite a common practice in the days when bikes didn't churn out hundreds of HP.

Paul
Title: Re: 73 SFC replica for sale
Post by: Piranha Brother 2 on October 29, 2019, 12:28
Bob Heath used to race his G50 with an unpainted frame to gain a few grams.
Apparently quite a common practice in the days when bikes didn't churn out hundreds of HP.

Paul

I trust he also took strong laxatives the morning of the race, shaved every hair from his body, removed his false teeth (which he had fitted to allow him to remove them on race day), didn't drink any fluids and slept in a sauna for three days prior to help rid himself of unwanted grams of body fluid ... sheesh! FFS!
Title: Re: 73 SFC replica for sale
Post by: Tippie on October 29, 2019, 13:01
Virtually all of the Rob Norths and copy/replicas racing here have unpainted frames.
Title: Re: 73 SFC replica for sale
Post by: Shamrock on October 29, 2019, 13:54
Itís orange for crying out loud. I donít understand what all the bickering is about.  ;D
Title: Re: 73 SFC replica for sale
Post by: CLEMTOG on October 29, 2019, 14:04
when I mechanicked for sidecar race teams, almost all of them were  bare metal chassis, this was (mainly and the big point) so that inspection of all areas, for cracks and defects could continually be looked at. It was my idea (when Tony Bateup was building a new chassis for Brian Houghton and the Bevan imp) that a pilot hole was drilled internally at all tube joints, to connect the innerds of them all together, then a 1/4 BSP boss was welded on near the headstock to carry a pressure gauge with another boss and a Schrader valve at the rear, the idea? simply pressurise the whole tube chassis to around 20PSI, and if a crack occurs the pressure drops. This seemed like a good idea but it didn't tell you if a brazed on bracket outside of the tube formations had cracked, or even broken off, as in the case of the rear brake pedal at the IOM in 1975? ! it dropped into the streamlining, fortunately and Brian still won the Southern 100, mainly because he was so far ahead that he was already hard to beat, there was a lot of front wheel lockups though, as the pedal linked all three wheels, and the handlebar lever and calliper was really only for scrutineering, which stipulated separate brake systems.
Then they had riveted/glued aluminium chassis, such as Seymaz, LCR etc and then carbon fibre. sometimes made by Arrows cars.
CLEM
Title: Re: 73 SFC replica for sale
Post by: Paul Marx on October 29, 2019, 16:39
I trust he also took strong laxatives the morning of the race, shaved every hair from his body, removed his false teeth (which he had fitted to allow him to remove them on race day), didn't drink any fluids and slept in a sauna for three days prior to help rid himself of unwanted grams of body fluid ... sheesh! FFS!

Every little bit helps when you're hustling a 45 HP machine around the Isle of Man.

Paul
Title: Re: 73 SFC replica for sale
Post by: laverdas on October 29, 2019, 18:38
For what it's worth i think cadnium plating is banned in the UK.
 Bentley motors (local car plant) had to remove and dispose of all cadnium plated parts from there stores due to the toxic nature.
Regards Andy
Title: Re: 73 SFC replica for sale
Post by: MarnixSFC on October 29, 2019, 19:06
When you ask people in Breganze there is no consensus about the frame finish, but I had several unrestored frames in hands and took one to my local plater, who did a check and said it definitely was zinc plating. A friend who wanted to try cadmium plating managed to get an aerospace company to do a frame. The result wasnít as expected and the frame is now painted silver..

I too think that they plated the frames because cracks can be quickly be detected. Drum brake SFCs often suffered cracks, supposedly because they were they were raced in endurance races to the limit, and beyond.

Marnix
Title: Re: 73 SFC replica for sale
Post by: helicopterjim on October 29, 2019, 22:16
For what it's worth i think cadnium plating is banned in the UK.
 Bentley motors (local car plant) had to remove and dispose of all cadnium plated parts from there stores due to the toxic nature.
Regards Andy

Cadmium wouldn't be totally banned ........ 90% of the hardware on aircraft is cad plated and so far there is no viable replacement. Cadmium has a major advantage in that consistent and smooth torquing is achieved as well as superior corrosion resistance. No other plating can offer both at this time.

Jim
Title: Re: 73 SFC replica for sale
Post by: Dellortoman on October 30, 2019, 02:47
I used to think Galing a frame would be great long-lasting protection but after getting my dirtbike box trailer hot dip galled it went from an easy one-hand lift and push to a full-blown backbreaker. It's insanely heavy now, but definitely no rust in the last 20 years it been in my back yard. Odd choices for a lightweight race bike.

G'day Vince,

Hot dip gal shouldn't have added a significant amount of weight. It's only a thin coating. Are there any tubular parts to the trailer chassis, such as RHS or round tube? If so, one or more of them may have filled with zinc and not drained when the thing was lifted out of the dipping tank.

I enquired about getting my bike trailer galvanised many years ago, and they said all tubular parts had to have pressure relief holes drilled in them. The explanation at the time was that the molten zinc is very hot and any sealed spaces with air in them could build up a high pressure inside. They didn't want any explosions due to gas pressure build up. However, that meant molten zinc could get in, and there's no guarantee that it'll all drain out when they lift it out of the tank. Maybe if you drill a few drain holes and get it re-dipped it'll come back lighter.

In the end I decided to paint the trailer rather than getting it galvanised. Much cheaper and easier. It's still hanging together after 40 years.
Title: Re: 73 SFC replica for sale
Post by: Vince on October 30, 2019, 03:35
The only hollow section would be where the floor was replaced, some of the old floors remained so maybe I now have a 10mm thick section of solid gal between. It got that heavy I had to add a Jinny wheel to move it. It was as I said a one hand easy lift and move before. Now its a ball breaker without the Jinny wheel. The trailer place charged me $400 about 20 years ago, I saw the results of my Dads poorly painted trailer years ago. It just disappeared with rust.
Title: Re: 73 SFC replica for sale
Post by: Laverda SF on October 30, 2019, 04:41
I agree with Marnix either a 71 or 72 SF with a SFC Fairing and Saddle, Pipes and rear sets are up to rider - Not too shabby but my ride was in much better condition ;o)
Title: Re: 73 SFC replica for sale
Post by: Dellortoman on October 31, 2019, 01:09
... maybe I now have a 10mm thick section of solid gal between.

Light a fire under it and melt out the excess zinc. You could sell it back to the galvanising shop :D
Title: Re: 73 SFC replica for sale
Post by: angonemoto on November 02, 2019, 18:03
All things considered, it's a clean SF with some poor assembly and fastener choices to boot. Are we saying it's a fools errand to get this at a non replica price and refit it to a SFC spec because of the year?

I'm considering that cuz the bike is so close to where I live. I'm not sure what ignition is in there, but I can pull the cover. What other easy looks can I get from a visit to see just how much would need to be done to create a worthy replica out of it?

Fire away!
Title: Re: 73 SFC replica for sale
Post by: IAG on November 02, 2019, 20:11
All things considered, it's a clean SF with some poor assembly and fastener choices to boot. Are we saying it's a fools errand to get this at a non replica price and refit it to a SFC spec because of the year?

I'm considering that cuz the bike is so close to where I live. I'm not sure what ignition is in there, but I can pull the cover. What other easy looks can I get from a visit to see just how much would need to be done to create a worthy replica out of it?

Fire away!
My first concern is the claim that the bike is ridden once a month-Fuel lines dry w/no discoloration-fuel in the tank? Exhaust downpipes have no discoloration, either.  The bike looks like a living-room display piece. Fitting the bike to SFC spec would be costly but I agree-it's a clean SF. Go see it, ride it & let us know how nice (or not) it is! 
Title: Re: 73 SFC replica for sale
Post by: MarnixSFC on November 02, 2019, 21:27
Depends how far you choose to go.
Do you want to alter the frame to SFC spec and do same with the swingarm? The small valve engine may run very fine, but of course SFCs all had had big valve head with big carbs. The SFC parts on this bike are mostly disc brake SFC items, so not right for drum brake chassis.
All entirely up to you of course.

Can be a fine machine to ride as it is too if the engine is healthy. 

Here in Europe, the short bell mouths would indicate the engine being GT spec, but I believe the SFs that were exported to the US were fitted with an air filter, which requires short bell mouths.

Marnix
Title: Re: 73 SFC replica for sale
Post by: Laverda SF on November 03, 2019, 00:09
MarnixSFC: The SFC 750 cam is too long in duration for the street. The standard 70 SF cam works approaching 7800rpm with open mouth Dellorto 32 VHB's with 2 into 1 pipes. Say Mukini's CSV 34's maybe worth a try (Never tried it). I actually have set of them - If your interested and still be able to use a velocity stack and an air breather, Basically do the same thing as the 32 VBH's but keeps dirt outta the engine ;o)
Title: Re: 73 SFC replica for sale
Post by: Paul Marx on November 03, 2019, 04:40
How much cash?

Paul
Title: Re: 73 SFC replica for sale
Post by: Laverda SF on November 03, 2019, 04:54
$100 Canadian for the pair (Guaranteed in great shape). But you have to fabricate linkages and play with jets plus pay for shipping ;o)

VHB to PHB's: "No you can't get away. From hell's heart I stab at thee. For hates sake. I spit my last breath at thee." Mikuni CSV BS 34's !

They sell for for over $160 US a piece - Lots of part accessories available at descent prices.

Personally, I would extend the series linkage and just use a single throttle cable. Then of course you require a vacuum hose to each carb from the cross over manifold tube or feed the vacuum separate to each carb without a manifold tube.

Kinda off topic it's a Paul thing ;o)

Title: Re: 73 SFC replica for sale
Post by: ducky on November 04, 2019, 13:05
Spoke to the seller a couple of months ago and seemed a good guy. He also has the SFC with 5 original miles, asking north of $150k, and a nice MHR Ducati as well as others from the era.
Title: Re: 73 SFC replica for sale
Post by: Paul Marx on November 04, 2019, 19:01
$ 19 400 last bid.

Anybody want to give me a hand building SFC reps?
I have all that's needed apart from the plastic for a couple.

Paul
Title: Re: 73 SFC replica for sale
Post by: angonemoto on November 05, 2019, 02:13
I was definitely bidding above my pay grade on that bike. It's super clean and I could see riding it and evolving it over the years. I guess I'll just focus on 3Cs now since Jim has declared they are the future. ;)
Title: Re: 73 SFC replica for sale
Post by: Paul Marx on November 05, 2019, 07:21
Thats a lot of money for an early SF, a can of orange paint, a fairing and a seat.

Paul
Title: Re: 73 SFC replica for sale
Post by: Tippie on November 05, 2019, 08:00
As always the market dictates the price. That someone forked out so much for that just shows that regardless of what a cobble up it is, someone just might fork out big for it. Go for it, Paul, but I doubt Europe would see such prices because people know Laverdas.
Anyway, it could have been worse, it could have been made into a hipster cafe racer with exhaust wrap, a brown suede covered wooden seat etc.
Title: Re: 73 SFC replica for sale
Post by: Piranha Brother 2 on November 05, 2019, 09:04
Insane. My super special SFQ when it's finished wouldn't get a price like that, and the comparison between the two would be chalk meets cheese. A fool and his money eh. Maybe they think they've got 'emselves a thoroughbred endurance racer there! Wow! Looks great - and it's orange!
Title: Re: 73 SFC replica for sale
Post by: IAG on November 05, 2019, 21:14
$ 19 400 last bid.

Anybody want to give me a hand building SFC reps?
I have all that's needed apart from the plastic for a couple.

Paul
I thought the same! Questionable bids perhaps an influence? 
Title: Re: 73 SFC replica for sale
Post by: helicopterjim on November 08, 2019, 05:28
Well, yes and no.
Cadmium would seem to age quite nicely.

My SFC has received cadmium.
It did seem very latin pimp on the photos I got and can't find but on the later photos appears quite correct.

Paul

I am corrected ....... it is a grey colour. For aviation parts there is a final chemical added afterwards that turns the cadmium a gold colour. If any spots were missed then those spots won't turn gold so they know the process was incomplete.

Thak you Paul.

Jim
Title: Re: 73 SFC replica for sale
Post by: Paul Marx on November 08, 2019, 06:59
I should know more next weekend since the beast should be finished and delivered pending testing if it stops pissing down in Northern Italy.

Paul.
Title: Re: 73 SFC replica for sale
Post by: helicopterjim on November 08, 2019, 14:34
If be more than happy to pitch in to get you a bottle of champagne for the celebration!

Jim
Title: Re: 73 SFC replica for sale
Post by: Paul Marx on November 08, 2019, 16:25
If be more than happy to pitch in to get you a bottle of champagne for the celebration!

Jim

 ;)
Title: Re: 73 SFC replica for sale
Post by: IAG on November 08, 2019, 17:35
If be more than happy to pitch in to get you a bottle of champagne for the celebration!

Jim
Count me in as well!
Title: Re: 73 SFC replica for sale
Post by: Paul Marx on November 08, 2019, 17:50
Count me in as well!

 ;) :D 8)
Title: Re: 73 SFC replica for sale
Post by: helicopterjim on November 08, 2019, 18:43
 (cheers) (cheers) (cheers) (Lavflag) (Lavinoflag) (Lavflag) (Lavinoflag)

I wonder how thirsty he is ......?

;) :D 8)
Title: Re: 73 SFC replica for sale
Post by: Paul Marx on November 08, 2019, 22:58
(cheers) (cheers) (cheers) (Lavflag) (Lavinoflag) (Lavflag) (Lavinoflag)

I wonder how thirsty he is ......?

Very.
But it's bubbly water for me, haven't touched a drop of alcohol in over 3 years.
Or tea, with milk, ŗ l'anglaise.
or coke!

Paul
Title: Re: 73 SFC replica for sale
Post by: helicopterjim on November 09, 2019, 03:47
Very.
But it's bubbly water for me, haven't touched a drop of alcohol in over 3 years.
Or tea, with milk, ŗ l'anglaise.
or coke!

Paul

Good man ...... I'll send you some tea bags ...... or a bottle of San Pellegrino. Your choice!
Title: Re: 73 SFC replica for sale
Post by: Paul Marx on November 09, 2019, 08:57
Good man ...... I'll send you some tea bags ...... or a bottle of San Pellegrino. Your choice!

Thanks a lot.

I very much enjoyed some Welsh tea recently.

Alcohol got to the point it was killing me quickly rather than slowly.

Perrier is very nice as well.

Salute!

Paul