new ignition question
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,117
Likes: 7,643
From: Poolville
Yea if your looking to gain a hundredth of a second or 2 in the quarter mile then maybe it's worth it... In our rides I really don't see the advantage except to when it comes to diagnosing a misfire....
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Outstanding HDF Member
Joined: Nov 2009
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From: TEXAS
just want it to run good and start easy for kick and electric. I dont have any interest in racing or hotroding this bike.
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,117
Likes: 7,643
From: Poolville
thjis has nothing to do with that, is has to do with me lookng for a good cheap ignition to replace a coil that has a big heat crack in the back, old *** electronic pickups with advance wieghts behind it.
just want it to run good and start easy for kick and electric. I dont have any interest in racing or hotroding this bike.
just want it to run good and start easy for kick and electric. I dont have any interest in racing or hotroding this bike.
Hell, on one of my bikes I use the single fire configuration and on the other I use the dual fire even though they both have single fire abilities....
Last edited by 98hotrodfatboy; Feb 11, 2018 at 06:16 PM.
Seasoned HDF Member
Joined: Jul 2014
Posts: 8,610
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From: Cental, MI
In all Honesty... On a basically stock Shovel...[or certainly an Ironhead] I much prefer the "note" with Dual Fire....Of course... IMO Nothing sounds like an Iron Harley... be it Sporty or Knuck... tho Usually Sporties are more Crisp, owing to a bit of Compression and a Truer Hemi design!!
Shovels... marginally sound better than an All Alumium EVO!!!!
Aluminum and Drag Pipes????? No Thanks!!!!
Shovels... marginally sound better than an All Alumium EVO!!!!
Aluminum and Drag Pipes????? No Thanks!!!!
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Outstanding HDF Member
Joined: Nov 2009
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From: TEXAS
I didnt think you were
thanks
Seasoned HDF Member
Joined: Nov 2006
Posts: 12,878
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From: la la land jerzey
Our Findings Mimick Johns's, and No One yet said there is no Useful Purpose for SingleFire..
I stand by my statement that on the Typical Shovelhead street Bike, I have yet to be proven that Singlefire is Any advantage at all.
The place I disagree with John is Dyno Runs.. I have Yet to See them used as a Real Tool... Don't mean it can't be done, just means most folks running one have an Agenda!!
Now... Put a set of High domed [high compression] pistons you better put Dual Plugs... and If ya Dual Plug... May as well singlefire... it is Easiest, and Most Efficient.
Yea... alot like an Oil Thread, And very Much Influenced by Marketing, and Personal Perceptions...
I stand by my statement that on the Typical Shovelhead street Bike, I have yet to be proven that Singlefire is Any advantage at all.
The place I disagree with John is Dyno Runs.. I have Yet to See them used as a Real Tool... Don't mean it can't be done, just means most folks running one have an Agenda!!
Now... Put a set of High domed [high compression] pistons you better put Dual Plugs... and If ya Dual Plug... May as well singlefire... it is Easiest, and Most Efficient.
Yea... alot like an Oil Thread, And very Much Influenced by Marketing, and Personal Perceptions...
as race guys - we only looked at two things in racing as you BTW know well - and I see them as one ( The Speed OF Torque ) on our dyno we have an engagement clock that plots and records just how fast the bike spins up every time from a set RPM to red line - and overlays the tests one over the other = as you very well know many more things are looked at as well
the speed that a machine can make power and changes to anything part of it that can be recorded - can then be seen in a time plot is very valuable, it also became the reason we won a total of 3 USA national championships is 5 years - we seen what it was doing with every small thing we did, every change we made Before we got to the track knowing how many turns and how long the straights were -
single fire does for me in my analysis does have a benefit as read on a dyno sheet in real time - the amount is subject to the performance orientation -- from almost nothing to a percentage
Seasoned HDF Member
Joined: Jul 2014
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From: Cental, MI
addenda driven dyno is the evo two cam scam we make the most power bike shop down the street
as race guys - we only looked at two things in racing as you BTW know well - and I see them as one ( The Speed OF Torque ) on our dyno we have an engagement clock that plots and records just how fast the bike spins up every time from a set RPM to red line - and overlays the tests one over the other = as you very well know many more things are looked at as well
the speed that a machine can make power and changes to anything part of it that can be recorded - can then be seen in a time plot is very valuable, it also became the reason we won a total of 3 USA national championships is 5 years - we seen what it was doing with every small thing we did, every change we made Before we got to the track knowing how many turns and how long the straights were -
single fire does for me in my analysis does have a benefit as read on a dyno sheet in real time - the amount is subject to the performance orientation -- from almost nothing to a percentage
as race guys - we only looked at two things in racing as you BTW know well - and I see them as one ( The Speed OF Torque ) on our dyno we have an engagement clock that plots and records just how fast the bike spins up every time from a set RPM to red line - and overlays the tests one over the other = as you very well know many more things are looked at as well
the speed that a machine can make power and changes to anything part of it that can be recorded - can then be seen in a time plot is very valuable, it also became the reason we won a total of 3 USA national championships is 5 years - we seen what it was doing with every small thing we did, every change we made Before we got to the track knowing how many turns and how long the straights were -
single fire does for me in my analysis does have a benefit as read on a dyno sheet in real time - the amount is subject to the performance orientation -- from almost nothing to a percentage
I'm not much of a Dyno Guy.. Tell me 1/4 MPH I'll tell ya what your ET could be!!!! and get pretty close to the real world Horsepower!!
Downside... Can't stand next to the Bike Smokin down the Track!!!
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Outstanding HDF Member
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From: TEXAS
I just dont think you can deny the benefit of dyno machines when it comes to modern efi and tuners. I had one of my dynas tuned on a dyno using a pcIII and a real professional tuner, not some guy that runs auto tunes in the bike night parking lots and if is amazing what they can do. They can adjust independently for every throttle position.
I could run that bike to red line and let go of the throttle and it decelerated as smooth as butter, throttle response in any gear at any rpms. It was slick.
I could run that bike to red line and let go of the throttle and it decelerated as smooth as butter, throttle response in any gear at any rpms. It was slick.
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Seasoned HDF Member
Joined: Jul 2014
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From: Cental, MI
I just dont think you can deny the benefit of dyno machines when it comes to modern efi and tuners. I had one of my dynas tuned on a dyno using a pcIII and a real professional tuner, not some guy that runs auto tunes in the bike night parking lots and if is amazing what they can do. They can adjust independently for every throttle position.
I could run that bike to red line and let go of the throttle and it decelerated as smooth as butter, throttle response in any gear at any rpms. It was slick.
I could run that bike to red line and let go of the throttle and it decelerated as smooth as butter, throttle response in any gear at any rpms. It was slick.
I know one Guy who can put EFI onto a Shovel motor.. Don't want it at all , but, he can do it..
If I had EFI, it would be equipped with a ThunderMax..
My youngest loves his!!! and... tah-dah!!! No Dyno Required.. may be a good Tool, but Not a Requirement!
Serious Question Time... Do the New EFI Harleys utilize Single fire or dual fire??? Betting Singlefire... but?????
Man... even I am causing some bit of Thread Drift!!! I'll just google that!!!!
Last edited by Racepres; Feb 12, 2018 at 08:12 AM.
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