Beautiful Bonnie!!!

[JJ]

I'll bet this lovely example goes for $12K or more...before it's over! 

https://bringatrailer.com/listing/1970-triumph-bonneville-t120-13/

[lazlokovacs]

it's not leaking???

In the 15 years I've been riding a 1970 triumph it has ALWAYS leaked... fix one and another one pops up.

beautiful bike though,

Though I've never seen a repainted tank that looks anywhere near as good as the original paint jobs...

Think it could make someone very happy

[JJ]

it's not leaking???

In the 15 years I've been riding a 1970 triumph it has ALWAYS leaked... fix one and another one pops up.

beautiful bike though,

Though I've never seen a repainted tank that looks anywhere near as good as the original paint jobs...

Think it could make someone very happy

Yes...British bikes of that era had a tendency..."to drip oil" and mark their spot. 

My restored 1975 Norton 850 Commando MK III leaked...as did my 1970 Triumph T100C Trophy 500........

Oh well, part of the charm and character...

[guzzista]

Hate to break the stereotype, but the last 2 Brit bikes I owned, 1971 Triumph Daytona and 1973 Norton Commando did Not leak oil.
With tight top ends ( little  or no blowby), careful assembly with mating surfaces checked for flatness,  good quality oil hoses and  engine/primary breather systems that were well thought out.  Now , tickling the Amals..... but that don't count.

[lazlokovacs]

Now , tickling the Amals..... but that don't count.

 

[reidy]

Really, who tickles their carburetors so hard that they wet themselves. I like my bike but isn't this taking it a bit to far.

[Sye]

All Triumph bikes leaked oil in the 70's due to the antiquated casting process. The trick was to flatten the mating surfaces using wet and dry taped to a piece of glass until the surface was uniform. Et voila, no more leaks, ever.

[Indypikes]

Yes....that is a beauty!

Reminds me a bit of the paint work I had done on my 03' Bonnie. It never leaked any oil.

[larrys]

Hate to break the stereotype, but the last 2 Brit bikes I owned, 1971 Triumph Daytona and 1973 Norton Commando did Not leak oil.
With tight top ends ( little  or no blowby), careful assembly with mating surfaces checked for flatness,  good quality oil hoses and  engine/primary breather systems that were well thought out.  Now , tickling the Amals..... but that don't count.

I built a bunch o' Brit bike engines back before I discovered Guzzis. None of mine or the ones I built for others leaked. But a few years down the road, it was when they started to leak, not if...
Crappy metallurgy, soft fasteners, '30's designs, old tooling, and outdated manufacturing methods were a surefire recipe for a leaky engine.
Larry