One for the start, one for running the engine,
That was common back then, so a hotter plug to start with and a colder for running, but this was more related to racing engines.
Interesting I have never heard this.
My TSS has 2 plugs and a decompressor, The second plug fires 1/64th of a degree after the top plug the theory being with an oil rich mixture it is to ensure an efficient burn.
it was a concept introduced by Alfa Romeo for their Grand Prix cars
No its a Mod29 1969 350 although the cases in the picture are actually from a El Bandido Mod18 built into spare engine with TSS internals way back when.
The El Bandido & TSS both shared the same cases and gear driven primary although that's where the similarities end.
For the sake of originality I tend to race it with the 'Frankenstein' engine and keep the original on the shelf.
I have been looking at this for a while as i have been considering building a track bike with a 370 motor i have in pieces. Still trying to decide whether to commit though. I had come to the same conclusion regarding the rear hub and losing the kickstart but the sprocket would still be very close to the ignition rotor cover. I notice AJR in Spain have larger front sprockets for the TSS. Would you know if these have the same 25mm splines?
I own an original TSS and unfortunately can confirm it has a 30mm spline. Although I'm sure a company like Talon could manufacture one to your dimensions.
The other thing to maybe consider would be clutch, The TSS has a gear driven primary with a vastly heavier duty clutch over the chain driven Pursangs or Metrallas and even this struggles and slips with tall gearing
Maybe I'm a little special? Ive never had an issue jumping from bike to bike, left or right gear shift, race pattern box or standard. Although I do have to admit to thinking for the first lap on my '68 TSS right hand shift and upside down, 1 up 4 down
The most excitement for me comes from jumping from one of my modern bikes to an old bike and realising the brakes don't work!
I am lucky to have an alloy one on my 199 and have never seen another. As said above far superior brake on the left being a direct rod rather than a cable
Watch this, which year and which sprint are you in on the picture ? I remember seeing a picture in the local paper of a TSS being loaded in Granville I think it was, a couple of years ago, to Jersey. Then the trail went cold ! As I had a 1960’s TSS I was hoping to see it. Regards, John Parry.
Hi John, yep same bike sprint was only last year, I've been over to the mainland with it for a few race meets good fun little bike eh? I'm currently out of action with a hand injury so all my toys are tucked away, will hopefully have it out next year. Double entry for the hillclimbs for old times sake?
Looking closer at the Montjuic its interesting to note what a parts bin special it is, the frame looks very close to a TSS with additional bracing on the head stock and swing arm, the front and rear mudguards look like plastic items from a trials bike, air filter from a Metralla maybe? and very interesting to see they choose to leave the kickstart and clutch inspection cover (the TSS cases have neither its bump start only and no air filter), and most strangely the reversed gear-lever why no linkage like the TSS? The hole in the frame is there for it.
I don't think the engine was any heavier maybe the bike as a whole. On the dirt bikes they would regularly crack gearwheels and shear crankshafts for the mkII's they did redesign the cush drive but it only slightly reduced the breakage issues, it is very rarely an issue with the road bikes so I assume it must be the constant knocks and chopping of gears on a dirt bike.
I thought the engine died when Bultaco gave up on road racing and didn't realise the 400 was based on it, everyday is a school day!
I only know all this because one of the few interchangeable parts between the TSS & El Bandido/Montadero is the clutch basket and I've been after one in good shape for years so I can build up a spare clutch, parts for these engines a few and far between now.
All the Bultaco engines are essentially the same carcass, just different states of tune and gears to suit their application.
The El Bandido/Montadero & TSS engines are actually stand alone in that they have gear driven primary not chain and have a central exhaust port rather than off to the right as all other Bultacos
The Montjuic did share the El Bandido engine for reliability the TSS only shared engine cases and was in a much higher state of tune with a 5 speed box.
'Can O' worms' springs to mind!!! (no pun intended!)
I really rate The Magicals, but would be very interested in what people think of OZO shocks that In Motion are selling, Are they rebadged Betors? as rumour would have it, or completely new, from the pictures they seem to have a resemblance to The Magicals.
The section didn't really allow for much run up, and we had a tight right turn immediately after. I cleaned it the lap before and after using 2nd gear, but that lap I chose 1st and just found a wrist full of wheelspin! We live and learn!
I restore classic bikes as a hobby and for my last project (a 1938 Speedtwin) noticed a huge increase in price and waiting time for parts to be rechromed.
Would I be right in thinking Bultos of about this era have increased in price significantly over last year?
Have been steadily rising over last few years, although not limited to Bultos, I think there is a general interest in the later twinshocks.
I may start a war by saying, I believe the Twinshock class is a much more honest and accessible class than the Pre65. I compete on a fairly original 199 (The Magicals shocks & fork springs, fibre clutch plates and electric ignition being the only 'modern parts')
Where as a lot of the Pre65 bikes I see competing now, have in my opinion, completely lost the way, modified or completely remanufactured frames, billet hubs, lightweight or tubeless rims, Japanese carbs, modern forks internals the list goes on. Some of the 'Pre65's' I have ridden are better suspended, stop, and turn better than my 1978 Bully!
Meaning the price (and possibly technical know how) of Pre65's have pushed them beyond the reach of a lot of people, in turn pulling the price of the later bikes up with them.
There seems to be a lot of photos showing very clean Bultacos on engine stands. Nows the chance to prove you get 'em dirty! Lets see your action shots.
I'll kick off with a couple from last weekends Jersey Classic & Modern Trials Club 2Day. Which incidentally was an extremely well organised event, with top names including Steve Saunders, Mick Grant, Becky Talbot nee Cook & Ross Danby.
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and just found a wrist full of wheelspin! We live and learn! 
SPARK PLUGS?
in Bultaco
Posted
Interesting I have never heard this.
My TSS has 2 plugs and a decompressor, The second plug fires 1/64th of a degree after the top plug the theory being with an oil rich mixture it is to ensure an efficient burn.
it was a concept introduced by Alfa Romeo for their Grand Prix cars