750 sf advance?

I say points for your triples Paul, ( you ) have great store in the simplicity, can see the attraction, i have/had ( since removed for iis 2 stroke system ) points on a triple water cooled stroker, the attraction of points when working has you attracted, meets your needs, ( i, the only perpendicular pronoun ) had the option of no points and took it.

Your championing of points is laudable, i like them also as an historic mechanical electrical wonder as they spark away, engine humming along, tactile feel you could say, without touching, maintenance time, very touching then. Best of both worlds for you, though you omit what is running on your triples? You ride them, you fix them, you make choices... the bone pointing is of some bemusement here, bless the postings. j.
 
Paul Marx said:
The very rare times I take the Autobahn, I am flat out, at 130 km/h which is for the moment the legal limit. My old carcass can't put up with the wind pressure for long anyhow. Most of our Laverda motorcycles, twins, triples, 500s, were blown up nearly new by youngsters who would ride them like Kleenex motorcycles: blow your nose in them and throw them away. Their Laverda would blow up whereas the pile of junk from Messrs Kawasaki, Suzuki or Honda would keep on going, leading Joe public to think that they were good motorcycles. Laverda got a bad reputation with the public as soon as it stopped racing 750s, and winning.
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So you're not confident your bike will withstand 5 minutes of WOT? A 750 SF1/2/3 in decent fettle should mange 185-190km/h easily, if you're willing to thrash it. If all is in order, it will survive unscathed, points or otherwise. It seems to me that very few dare to ride their bikes anywhere near to its' capabilities these days. Or is it that the bikes' capabilities far surpass the riders' capabilities?

When new, ALL bikes are ridden like that, Laverdas were no exception. Hands up those here that didn't, when they were 18! There's still a lot of people out there that expect this to be possible today, even with 50-year-old bikes. And, in some cases, it is entirely possible! But, be certain, ignition points will not be part of the set up...

A great number of Laverdas were murdered through abuse, neglect and plain stupidity, but so were loads of others.

As for magnetos, they are mostly an antiquated nuisance. They do not age well. Most have a low rev ceiling, weak spark at low revs and more often than not, offer poor starting. They've almost disappeared from classic race circles, electronic ignitions have largely taken over there as well. I went to great lengths repairing/restoring my Lucas NR magneto for my Matchless, mainly for "originality". Yes, I love it because it works as it should, but I'm well aware of its shortcomings, of which it has many. The original Laverda triple ignition (HKZ) was by magneto, everybody agrees where that belongs.

piet
 
Kinda like the HKZ Piet, detest BTZ with a passion. Box full of HKZ bits here, sort of worked on the more early triples, some aged better than others.

As you indicate, the HKZ is a zero ( ostensibly ) power budget ignition, though precluded any sort of meaningful battery charging regime by virtue of one phase charging coil, HT exciter and bucking coil regulator on'tother side. There is the near equivilent of a magneto in electronics "CDI" modern derivitive the iis long box, average power budget of 6 watts normal riding 12-18w at higher riding speeds. Power budget for points is around ( for a twin ) the 70+ watts. HTH j
 
The Breganzie 750 SF generally runs a generator and NOT friendly for CDI Ignitions were I pick POINTS. Can't FIX a burnt PCB with with no Spark on the road side ;o)
 
Besides after some 40 years of using Duel Points on my 70 SF I NEVER totally broke down due to ignition issues - It did stop occasionally due moisture but removing the distributor Cap and drying it out with some sand paper feeler gauges and a screw driver I was ON MY WAY ;o)

The Bosch VW Beetle point work just fine - I drilled out the center hole to fit the Breganzie Distributor Peg and that's it. Points will last easily more the 3 years no matter how much you rev that 750 SF.

AS far as OIL goes, just straight BLACK Truckers DINO 40w15 Diesel Oil changed every year.

Highly recommend the Honey Coloured DURON 40w15 if you can can find it but any Black Shell, Mobil or AC Delco 40w15 diesel oil will do ;o)
 
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sfcpiet said:
So you're not confident your bike will withstand 5 minutes of WOT? A 750 SF1/2/3 in decent fettle should mange 185-190km/h easily, if you're willing to thrash it. If all is in order, it will survive unscathed, points or otherwise. It seems to me that very few dare to ride their bikes anywhere near to its' capabilities these days. Or is it that the bikes' capabilities far surpass the riders' capabilities?
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I suspect the SF2 will hold more than 5 minutes. I lent it to a son last spring who went through a nearly full tank in 100km on the autoroute. He must have been going quite fast and maybe the bike is a bit rich?
sfcpiet said:
A great number of Laverdas were murdered through abuse, neglect and plain stupidity, but so were loads of others.

As for magnetos, they are mostly an antiquated nuisance. They do not age well. Most have a low rev ceiling, weak spark at low revs and more often than not, offer poor starting. They've almost disappeared from classic race circles, electronic ignitions have largely taken over there as well. I went to great lengths repairing/restoring my Lucas NR magneto for my Matchless, mainly for "originality". Yes, I love it because it works as it should, but I'm well aware of its shortcomings, of which it has many. The original Laverda triple ignition (HKZ) was by magneto, everybody agrees where that belongs.

piet
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Plenty of century old magnetos out there.
Not what 21st century man expects but they do the job.
Wasn't it Boyer Bransden who invented a electronic battery less ignition? Certainly lighter than a magneto.

Racing improves the breed but race bikes are no good with panniers.

However, to each is own.

Paul
 
Paul: Rather then then Panners how's your take with just a Samsonite Suit Case on a Race Bike. I was never proud but practicable.- Just how far are willing to go through all kinds of weather in the Cambrian Shield of Northern Ontario - Been there riding a 70 Breganzie 750 SF0 FOREVER ;o)

7943105960_146c0ae8e7_o.jpg


Name that Bike behind me - He caught up to me a few times and tagged along for awhile - He snapped this PIC and in my opinion he's insane for riding the bikes he chooses - Money was no consequence for him - Sincerely hope Iver is still with us because I really liked him.

YES! I really was somewhat of a 145 LB 5' 11" Spider at 67.

Johnny Deep had nothing over me - LOL
 
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1970 Breganzie 750 SFO Cafe simply modified as per her intended design:
3860363573_8c14f86e75_o.jpg

Short wheel base, rather top heavy and a squirrel in the rain but man she's a relentless long distant Racer providing you have a Fairing to break the wind, keep you dry with lots head lamp illumination.
4704158853_a8e159a097_o.jpg

This profile was Radar Stealth - Don't ask me how I know ;o)

Paul: A Magneto with a Zener Diode - GOD help me a 69 Triumph Bonneville with Amil trickle carbs . Great riding machine but a nightmare to start a keep running with or without a battery.
 
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motoddrob said:
I can't see the point.
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I don't get it either, but the British Superbike promoters have a deal with Moto America and are bringing them to Europe this year. Wayne Rainey head of Moto America Superbike series says they are a phenomenal draw card to the sport in America. Baggers coming Australia, sadly I think so, it seems real Superbikes are a dying breed.😭😭
 
"Plenty of century old magnetos out there."
my 1935 Sunbeam Lion (6C) has the original Lucas magneto that it came out of the factory with, it has never been apart, it is still good at 89 years old and for decades the bike was not very well stored, my uncle bought it new and I am the second owner from age 13, (now 71) so in my ownership for 59 years, Uncle Arthurs ownership for 30 years, laid up between 1940 and 1945 as he voluntarilly enlisted in the army for WW11 got captured and was POW for a full five years.
CLEM
 
Laverda SF said:
1970 Breganzie 750 SFO Cafe simply modified as per her intended design:
3860363573_8c14f86e75_o.jpg

Short wheel base, rather top heavy and a squirrel in the rain but man she's a relentless long distant Racer providing you have a Fairing to break the wind, keep you dry with lots head lamp illumination.
4704158853_a8e159a097_o.jpg

This profile was Radar Stealth - Don't ask me how I know ;o)

Paul: A Magneto with a Zener Diode - GOD help me a 69 Triumph Bonneville with Amil trickle carbs . Great riding machine but a nightmare to start a keep running with or without a battery.
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Now that’s a good looker Ron 😎
 
It's either funny or ironic, my favourite is an annual race they have for Choppers around a dirt speedway track. Guy Martin has run it a couple of times. What's the point, if you have to ask?
 
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