I had a 1965 Bonneville brand new, then a used 1967 Bonneville. Both were excellent bikes. Funny how they all sound like sewing machines when you are running the stock mufflers.
Your carburetors are not set up correctly . Take the left spark plug out ( but leave it in the HT lead cap and make sure the thread if the plug is earthed to the engine . Avoids electronic ignition if fitted malfunctioning ) . Run the bike on just the right cylinder . Lower the idle screw to 100 rpm above cutout . Repeat the process with the opposite cylinder. Then with both spark plugs refitted start the bike up . It should run 250 - 300 rpm higher than on single cylinder testing . Screw both idle screws out an eight of a turn . The idle speed should reduce somewhat . Repeat screws out until you are happy with the engine idling speed . If you have too much difficulty your carburetors may be miss matched . To test the fuel mixture of the engine running ; Ensure clean quality petrol , then run the bike at cruising speed up a slight gradient . Cut the ignition and pull the clutch lever in until bike stops . Obviously use brakes to assist the halt . Remove the plugs in turn and note the colour of the ceramic shroud around the centre of the plug . It should be a light grey . Any oil deposits indicate a worn cylinder bore or sloppy valve stems . Hope this advice helps you .
I'm a retired motorcycle mechanic, used to work on these in the seventies, i owned Trumphs 67 and 69 models and a BSA Spitfire. Love Nortons too.
Beautiful bike. That was my exact model & color that I bought in London, in 1968. I absolutely loved the bike.
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I LIKE BRITISH BIKE TRIUMPH OLD LEGEND ON THE ROAD HEY BE CAREFUL OUT THERE WE WANT YOU ALIVE
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That was a great bike! Easy ride and all the joy of speed back in the day before the Honda 750 changed everything.
I purchased 70 Bonneville from factory at end of mfg run. I have a 70 totally refurbished. My best bike ever.
That looks like a perfect and comfortable riding position.
I had a 1965 Bonneville brand new, then a used 1967 Bonneville. Both were excellent bikes. Funny how they all sound like sewing machines when you are running the stock mufflers.
What a sweet bike! Who needs a garage when you can tuck-it-in to bed next yo you!
Feel the power of a real motorbike...
great looking bike I had one
Great bike 🇬🇧👍
You see ! One kick and it starts up.
Gear selector on the right. Nice
Not for me l m left man
A true beauty
I had a 1957 Triumph thunderbird and I wish I still had it sold it for £30
@ZoneIII i am very envious of you!
How much prize
WOW!!!
where did you get that jacket ? is that from TRIUMPH company ?
how can you keep her idling so low without cutting out? mine won't idle that slow without shutting off
Your carburetors are not set up correctly . Take the left spark plug out ( but leave it in the HT lead cap and make sure the thread if the plug is earthed to the engine . Avoids electronic ignition if fitted malfunctioning ) . Run the bike on just the right cylinder . Lower the idle screw to 100 rpm above cutout .
Repeat the process with the opposite cylinder.
Then with both spark plugs refitted start the bike up . It should run 250 - 300 rpm higher than on single cylinder testing . Screw both idle screws out an eight of a turn . The idle speed should reduce somewhat . Repeat screws out until you are happy with the engine idling speed .
If you have too much difficulty your carburetors may be miss matched .
To test the fuel mixture of the engine running ; Ensure clean quality petrol , then run the bike at cruising speed up a slight gradient . Cut the ignition and pull the clutch lever in until bike stops . Obviously use brakes to assist the halt . Remove the plugs in turn and note the colour of the ceramic shroud around the centre of the plug . It should be a light grey . Any oil deposits indicate a worn cylinder bore or sloppy valve stems . Hope this advice helps you .
sounds fuckin-A-mazing