gearing and safe revs 8v SB

[jacksonracingcomau]

so I rewired it and fitted acewell speedo tach computer
holds max speed and max revs in memory although not necessarily simultaneously two functions are seperate
I think my box is v65 sp as is drive box and 18” rear wheel
anyway 4th is 19.5 kmph /12.2 mph per 1000rpm
top is 23.09 kmph/ 14.4 mph 1000rpm
at 125 kmh /78 mph you drop 1krpm hitting 4th puts it in the meat at 6400rpm
safe revs ? high score today but might have revved higher before I fitted a tacho

[Muzz]

8500 rpm is certainly buzzing it.

Any idea what rpms where the torque/power graph intersect?

[Chuck in Indiana]

safe revs ? high score today but might have revved higher before I fitted a tacho

[huub]

interesting , i have a digital programmable ignition on my lario, with the limiter set at 8000 rpm,
the only times i  run into the limiter is when i miss a gear.
anyway, beyond 7500 rpm the power drops, 

[Kiwi Dave]

Any idea what rpms where the torque/power graph intersect?

It should be 5252 rpm.  Creators of false dyno readings often forget this when they fabricate an enhanced dyno reading.

[Chuck in Indiana]

It should be 5252 rpm.  Creators of false dyno readings often forget this when they fabricate an enhanced dyno reading.

 

[jacksonracingcomau]

interesting , i have a digital programmable ignition on my lario, with the limiter set at 8000 rpm,
the only times i  run into the limiter is when i miss a gear.
anyway, beyond 7500 rpm the power drops,

box on mine sweet as, haven’t missed a gear yet
more likely I strip the shaft coupling and get a false neutral !
unlikely to use 8500 in 4th or 5th but lower gears get a hiding power doesn’t drop like stone
might be my zorst, only real mod from std

torque curve interesting can bimble through towns in top pulls cleanly from nothing
  but for fun ,work the box .is definitely a mr hyde in there , such a shame they gave up with this motor, should have become the v7
 but what do I know and how come it took me 30 + years to catch on ?

[voncrump]

box on mine sweet as, haven’t missed a gear yet
more likely I strip the shaft coupling and get a false neutral !
unlikely to use 8500 in 4th or 5th but lower gears get a hiding power doesn’t drop like stone
might be my zorst, only real mod from std

torque curve interesting can bimble through towns in top pulls cleanly from nothing
  but for fun ,work the box .is definitely a mr hyde in there , such a shame they gave up with this motor, should have become the v7
 but what do I know and how come it took me 30 + years to catch on ?

30 years ago I owned and thrashed a Lario.
On one ride I hit valve float overtaking a bunch of Harley’s on a sweeping corner, I glanced down and saw the revcounter coming down from 8500 rpm.
Once the engine got over 5000rpm it smoothed out completely and it was hard to judge the revs.
I never really gelled with the bike and sold it,
A decision I now regret.
Cheers, voncrump.

[Chuck in Indiana]

Once the engine got over 5000rpm it smoothed out completely and it was hard to judge the revs.

Yeah, it's a sweetheart. Old timey dealer and wrench Ace Mallot told me over revving was the cause of many's demise.  Above 5K it just keeps getting better and better until it isn't.
I loved the character of the Lario engine, but the Aero engine was too fascinating to pass up.

[jacksonracingcomau]

Yeah, it's a sweetheart. Old timey dealer and wrench Ace Mallot told me over revving was the cause of many's demise.  Above 5K it just keeps getting better and better until it isn't.
I loved the character of the Lario engine, but the Aero engine was too fascinating to pass up.

no question about aero, think you have only bike in world with one
but I ‘m left with proving 8v
will need more $ for rods etc to be sustainable high revs but 8500 as safe overev doesn’t seem a big ask
At time of lario I was racing BB Guzzi, peaked at 9300, others were hitting 10. No limiters then
back to tas in few weeks, mate from uk on 8v with missus
my bb and another bb all 2 up
i know we won’t be waiting for tiddler, in fact I will steal it back for at least one road, around Reece Dam it was perfect there in dec
will measure cam later in year,   no concerns about valves as it stands, def not bouncing yet