Evo engine on rushmore frame??
Seasoned HDF Member
Joined: Apr 2015
Posts: 6,863
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From: St. Charles, MO
I'd be willing to wager there's a way to cobble a system together. Maybe look at the early ABS systems originally available on police bikes. My dad had a '99 police bike that I'm pretty sure had ABS...
Seasoned HDF Member
Joined: Jun 2012
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From: CT/FL
I bet the rubber mount evo drive train would be a good start? It mounts very similar to the new touring bikes. If you avoid the 2014 and up Rushmore bikes, you don't have to deal with the CAN buss. IF you want all the engine electronics, your biggest problem will be the crankshaft position sensor. I wonder if an S&S Evo motor can be ordered to accommodate that? They come as big as 96 cu in, so power won't be a problem. I say it's possible, keep looking into it. And let us know, I'm tired of muffler, handlebar, seat and oil threads!
PS the main reason you can't make a newer bike sound like an evo is the ignition. Dual fire vs single fire. I wonder if you could program a new bike's ECU to fire both plugs instead of just the one on the power stroke?
PS the main reason you can't make a newer bike sound like an evo is the ignition. Dual fire vs single fire. I wonder if you could program a new bike's ECU to fire both plugs instead of just the one on the power stroke?
Last edited by Joe12RK; May 18, 2017 at 05:14 PM.
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From: Canada
I assume you're referring to wasted spark ignition? If so how would that change the sound firing the plug on overlap of the companion cylinder?
Seasoned HDF Member
Joined: Jun 2015
Posts: 8,055
Likes: 8,080
From: Canada
Wasted spark wont effect engine sound. There must be something else like cam profile. These twin engines from that era are all 45 degrees except the v-rod being 60
Road Warrior
Joined: Jun 2008
Posts: 1,759
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From: On a Large Sandbar, NY
Maybe easier to take ABS off of an earlier touring model. Police bikes had them. I think in 2005, but It could have been a few years earlier. I remember the ABS unit was in the saddlebag
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Seasoned HDF Member
Joined: Jun 2012
Posts: 6,154
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From: CT/FL
Published Saturday, August 30, 2003
The distinctive Harley-Davidson engine rumble -- known to fans as "potato, potato, potato" -- is as old as the company's first V-twin motor developed nearly a century ago in 1909.
Harley withdrew its attempt to trademark the sound in 2000, but the throaty roar remains identifiable with the company and its riders, although other bikes have a similar sound.
Here's how the sound is made:
All engines make noise, which is the sound of hot gas escaping the exhaust valve opening when a spark plug fires.
On most two-cylinder engines, one spark plug fires on one revolution of the crankshaft, and the other fires on the second revolution. This produces a smooth, regular beat.
But in a Harley, both spark plugs fire nearly simultaneously followed by a brief pause after the second fire. The effect is a syncopated sound. This is a result of the engine's design, which is in the shape of a "V."
At idle, a Harley engine will make a "pop pop pause, pop pop pause" sound. Other two cylinder engines, such as the ones in most lawnmowers, will make a "pop pop pop pop" sound with no pause.
Sources: www.HowStuffWorks.com, Harley-Davidson
The distinctive Harley-Davidson engine rumble -- known to fans as "potato, potato, potato" -- is as old as the company's first V-twin motor developed nearly a century ago in 1909.
Harley withdrew its attempt to trademark the sound in 2000, but the throaty roar remains identifiable with the company and its riders, although other bikes have a similar sound.
Here's how the sound is made:
All engines make noise, which is the sound of hot gas escaping the exhaust valve opening when a spark plug fires.
On most two-cylinder engines, one spark plug fires on one revolution of the crankshaft, and the other fires on the second revolution. This produces a smooth, regular beat.
But in a Harley, both spark plugs fire nearly simultaneously followed by a brief pause after the second fire. The effect is a syncopated sound. This is a result of the engine's design, which is in the shape of a "V."
At idle, a Harley engine will make a "pop pop pause, pop pop pause" sound. Other two cylinder engines, such as the ones in most lawnmowers, will make a "pop pop pop pop" sound with no pause.
Sources: www.HowStuffWorks.com, Harley-Davidson