Killboy failure Dragon Fest

[Jim Moore]

Originally Posted by StoneAgeMan

Have you ever driven a motorcycle with an engine that is: long-stroke, large-displacement, 45 degree V-twin, and with a shared piston throw on the crank? That's what it looks like he's operating, tons of low-end torque. Typically their second gear is good from about 8mph up to 48mph and will merrily yank you from one to the other pretty darn quick.

Their throttle is an on/off switch for jumping forward or backwards 20' (7 meters) almost instantly at almost any speed (except for at top-rpm or the very bottom portion of the rpm, which you don't use on that type of engine).

Long-stroke always means a very wide and flat torque curve and also means a lower top rpm. Only a short stroke engine can hit high rpms, but they have almost no low-end torque. Did you know that a big cruise ship engine typically operates around 10 or 15 RPM and has less than 60 rpm at full speed? It's actually much more about piston speed, typically measured in feet-per-second, long stroke travels farther per RPM. Like a long crowbar vs. a short crowbar.

StoneAge Man

Your technical jargon confused me a little bit, but is that why they're so fucking slow?

[Bill Harris]

And why do they sound like "potato potato potato" ?

--Bill

[UnsureFooting]

Originally Posted by Bill Harris

And why do they sound like "potato potato potato" ?

--Bill

That's the single crank layout talking.

[Aussijussi]

Originally Posted by StoneAgeMan

Have you ever driven a motorcycle with an engine that is: long-stroke, large-displacement, 45 degree V-twin, and with a shared piston throw on the crank? That's what it looks like he's operating, tons of low-end torque. Typically their second gear is good from about 8mph up to 48mph and will merrily yank you from one to the other pretty darn quick.

Their throttle is an on/off switch for jumping forward or backwards 20' (7 meters) almost instantly at almost any speed (except for at top-rpm or the very bottom portion of the rpm, which you don't use on that type of engine).

Long-stroke always means a very wide and flat torque curve and also means a lower top rpm. Only a short stroke engine can hit high rpms, but they have almost no low-end torque. Did you know that a big cruise ship engine typically operates around 10 or 15 RPM and has less than 60 rpm at full speed? It's actually much more about piston speed, typically measured in feet-per-second, long stroke travels farther per RPM. Like a long crowbar vs. a short crowbar.

StoneAge Man

8mph to 48 mph in second gear? The faster sports bike's today will probably do 100mph in first gear.

[NCStephen]

Originally Posted by UnsureFooting

That's the single crank layout talking.

It is the remnants of a radial engine with only two cylinders remaining.

NCS

[kioti]

Originally Posted by Bill Harris

And why do they sound like "potato potato potato" ?

--Bill

http://www.wildwestcycle.com/f_firing.html

Originally Posted by UnsureFooting

That's the single crank layout talking.

It is a single pin crank with knife and fork con rods.

[RDTCU]

Originally Posted by kioti

No it is a single pin crank with knife and fork con rods.

Now make a version of that with a Harley firing order...

[STUFF2C]

Originally Posted by Flying-D

You're kidding, right? I can pack my tent in probably 5 minutes. Why the hell would I ever want that monstrosity flapping in the breeze behind me?

Dunno, why would you.

[Tepi]

Originally Posted by StoneAgeMan

Have you ever driven a motorcycle with an engine that is: long-stroke, large-displacement, 45 degree V-twin, and with a shared piston throw on the crank? That's what it looks like he's operating, tons of low-end torque. Typically their second gear is good from about 8mph up to 48mph and will merrily yank you from one to the other pretty darn quick.

Their throttle is an on/off switch for jumping forward or backwards 20' (7 meters) almost instantly at almost any speed (except for at top-rpm or the very bottom portion of the rpm, which you don't use on that type of engine).

Long-stroke always means a very wide and flat torque curve and also means a lower top rpm. Only a short stroke engine can hit high rpms, but they have almost no low-end torque. Did you know that a big cruise ship engine typically operates around 10 or 15 RPM and has less than 60 rpm at full speed? It's actually much more about piston speed, typically measured in feet-per-second, long stroke travels farther per RPM. Like a long crowbar vs. a short crowbar.

StoneAge Man

Nope, you got me there. I only have a HD forty eight, without highway pegs. As a male I wouldnt like to sit in a gyno position and I'm planning on some midpegs next summer. Also I do like to keep control while cornering, that means quick access to the gearshifter and rear brake. As for the cruise ship analogy, we're talking about motorcycles not container ships.

[txwanderer]

Originally Posted by RDTCU

Now make a version of that with a Harley firing order...

Bet he don't know it or get the pun. Along with most "motorcycle" guys.

[AustinJake]

Originally Posted by kioti

http://www.wildwestcycle.com/f_firing.html



It is a single pin crank with knife and fork con rods.

Originally Posted by RDTCU

Now make a version of that with a Harley firing order...

[100mpg]

no wonder they are so slow....it only fires once per second!

Originally Posted by AustinJake

[Cambion]

Wasn't there supposed to be a photo thread around here somewhere??

[JimVonBaden]

Originally Posted by Cambion

Wasn't there supposed to be a photo thread around here somewhere??

Try this one: http://www.advrider.com/forums/showthread.php?t=830971

Jim

[RDTCU]

Originally Posted by Cambion

Wasn't there supposed to be a photo thread around here somewhere??

That's Larry, he's a hoot