horse power on nightster
Tourer
Joined: Jul 2007
Posts: 401
Likes: 0
From: hollister fl.
RE: horse power on nightster
ok i took my 07 nightster 1200 to my local dealer dynoed bike at 61 horse power we installed vance&hines short shots the heavy breather air cleaner installed sert & dynoed the bike at 71.6 hp max torque at76.16 but dynoes are like air gauges use 5 different gauges & get 4 different answers i always go with the two that are the closes & consider that a good average just my 2 cents worth!!!!!!!!!!!!!!!!
Banned
Joined: Apr 2007
Posts: 3,349
Likes: 2
From: Appling GA
RE: horse power on nightster
That thunderheader will pump up the ponies 5-7 HP easy... Those numbers look like the Dyno guy had his inputs in correct, nice numbers...
ORIGINAL: 4cams
My 06 1200R with Thunderheader, SE Air filter and #45 made 72HP and 77 torque. I think this is normal for a carburetor equipped bike. I've seen the efi bikes with the new controller programed, make a little more. My power is between 3500-5000 rpm. There is little gained above 5000 rpms. I'm sure I could gain some on top, with a cam, but I like the power where it is now.
My 06 1200R with Thunderheader, SE Air filter and #45 made 72HP and 77 torque. I think this is normal for a carburetor equipped bike. I've seen the efi bikes with the new controller programed, make a little more. My power is between 3500-5000 rpm. There is little gained above 5000 rpms. I'm sure I could gain some on top, with a cam, but I like the power where it is now.
Tourer
Joined: Mar 2007
Posts: 368
Likes: 2
From: Salina, KS
RE: horse power on nightster
ORIGINAL: Terp84Alum
Unlikely. Especially w/o an ignition upgrade.
ORIGINAL: 1200c
Seriously, the average for a Stage 1 on a rubbermount sportster is ~75 hp.
Seriously, the average for a Stage 1 on a rubbermount sportster is ~75 hp.
Perhaps unlikely for an injected (2007 plus) engine.
But a stage 1 rubbermount carburated moter will turn an average in the mid-70's. Mine very nearly makes 80, and perhaps could on a good day. And, this is possible with slip-ons.
A full stage 1 includes an ignition upgrade. Paying taxes (air and exhaust) is only stage .5.
Banned
Joined: Apr 2007
Posts: 3,349
Likes: 2
From: Appling GA
RE: horse power on nightster
Like someone said a Dyno is just a tuning tool. You can input the data to read whatever you want to on a sheet to make the customers feel all good about thier numbers. If you have a high CF (5)like the above sheet you can expect it to read too high (the mid 70s to 80 HP with a stage 1).
If you were to adjust that CF down to 1-1.5 closer to where it most likely should be, you would see numbers that were closer to the truth of the matter.... like 68-70 tops with just a stage 1.
No more argument from me, people can say thier bikes have 80 HP with a stage 1 till you they are blue in the face
If you were to adjust that CF down to 1-1.5 closer to where it most likely should be, you would see numbers that were closer to the truth of the matter.... like 68-70 tops with just a stage 1.
No more argument from me, people can say thier bikes have 80 HP with a stage 1 till you they are blue in the face
ORIGINAL: rfranz1952
I respectfully disagree.
Perhaps unlikely for an injected (2007 plus) engine.
But a stage 1 rubbermount carburated moter will turn an average in the mid-70's. Mine very nearly makes 80, and perhaps could on a good day. And, this is possible with slip-ons.
A full stage 1 includes an ignition upgrade. Paying taxes (air and exhaust) is only stage .5.
ORIGINAL: Terp84Alum
Unlikely. Especially w/o an ignition upgrade.
ORIGINAL: 1200c
Seriously, the average for a Stage 1 on a rubbermount sportster is ~75 hp.
Seriously, the average for a Stage 1 on a rubbermount sportster is ~75 hp.
Perhaps unlikely for an injected (2007 plus) engine.
But a stage 1 rubbermount carburated moter will turn an average in the mid-70's. Mine very nearly makes 80, and perhaps could on a good day. And, this is possible with slip-ons.
A full stage 1 includes an ignition upgrade. Paying taxes (air and exhaust) is only stage .5.
Road Warrior
Joined: Jun 2005
Posts: 1,334
Likes: 2
RE: horse power on nightster
In my opinion the best thing to do is call Dan at NRHS Performance and discuss what you want out of the bike performance wise. He is a great guy who really knows his stuff and also EFI Sportsters. His personal bike is a 07 883 converted to 1250cc that dynos at 102HP.
Your dynotuner was BS'in you. I dont think you could squeeze 65 horses out of a stage .5 like you described without an upgraded ign module (which makes it a true stage 1)... you would that and cams and heads to just bust 70hp...
Yeah well then,you know how easy it is to fudge dyno numbers. when you post it up make sure you post the correction factor and the dyno standard numbers....
I posted a sheet with 07 1200 numbers with a stage 1 ac, slip ons and map and ign module
it didnt bust 69hp. And it would need somthing extra to get it to (true) 75hp like a 2into1 pipe and/or a cam IMO
Yeah well then,you know how easy it is to fudge dyno numbers. when you post it up make sure you post the correction factor and the dyno standard numbers....
I posted a sheet with 07 1200 numbers with a stage 1 ac, slip ons and map and ign module
it didnt bust 69hp. And it would need somthing extra to get it to (true) 75hp like a 2into1 pipe and/or a cam IMO
I know how to BS dynos and none of these have high correction factors (some of them < 1). They are also all SAE correction and run in 4th gear.
As for the EFI bikes. I don't know what it is, but some of them have been posting dyno numbers below average for what is seen with the carbed bikes. Although some of them are posting average numbers.
Road Warrior
Joined: Jun 2005
Posts: 1,334
Likes: 2
RE: horse power on nightster
Just look through this post:
https://www.hdforums.com/m_1011043/mpage_2/key_/tm.htm
You have 3-4 bikes doing what you say is not possible. They are all done at different dynos. Must be a lot of dyno's fudging numbers. Just look for more dyno sheets on this forum if you aren't convinced. I am sure you can find more than that meeting the criteria.
https://www.hdforums.com/m_1011043/mpage_2/key_/tm.htm
You have 3-4 bikes doing what you say is not possible. They are all done at different dynos. Must be a lot of dyno's fudging numbers. Just look for more dyno sheets on this forum if you aren't convinced. I am sure you can find more than that meeting the criteria.
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Road Warrior
Joined: Apr 2007
Posts: 1,961
Likes: 3
From: Boise, Idaho
RE: horse power on nightster
I work at a dealership and I see stage 1 dyno results all the time. We have the only certified MC dyno in the state, and a tuner with nearly twenty years of experience.
I know for a fact that numbers of 80+ hp and torque are possible with agood set-up and a FULL dyno tune. Many customers who install stage 1 kits receive only a partial dyno tune (to avoid over-stressing the engine before it is broken in), or they simply have a dyno map downloaded (to save money).
Don't make the mistake of thinking that you are capable of tuning your bike as well with a power commander, as an experienceddyno tech is capable of tuning your bike with a SERT.
My 2007 Nightster has the following stage 1 kit: Pipe Dreamz exhaust (with good baffles and torque cones), D&M Customs A/C, Screaming Eagle Race Tuner. It received a full dyno tune and was run for nearly eight hours total. I saw print-outs during the early stages (first few hours) and my numbers were in the 70's.
As with most things in life... Good results take time... You get what you pay for and quality isn't cheap....
Here is the dyno chart for my bike after the full tune. It uses SAE, which I am told is the most accurate method. The 1.09 correction factoris standard for our altitude and atmospheric pressure levels.
I know for a fact that numbers of 80+ hp and torque are possible with agood set-up and a FULL dyno tune. Many customers who install stage 1 kits receive only a partial dyno tune (to avoid over-stressing the engine before it is broken in), or they simply have a dyno map downloaded (to save money).
Don't make the mistake of thinking that you are capable of tuning your bike as well with a power commander, as an experienceddyno tech is capable of tuning your bike with a SERT.
My 2007 Nightster has the following stage 1 kit: Pipe Dreamz exhaust (with good baffles and torque cones), D&M Customs A/C, Screaming Eagle Race Tuner. It received a full dyno tune and was run for nearly eight hours total. I saw print-outs during the early stages (first few hours) and my numbers were in the 70's.
As with most things in life... Good results take time... You get what you pay for and quality isn't cheap....
Here is the dyno chart for my bike after the full tune. It uses SAE, which I am told is the most accurate method. The 1.09 correction factoris standard for our altitude and atmospheric pressure levels.
Road Warrior
Joined: Apr 2007
Posts: 1,961
Likes: 3
From: Boise, Idaho
RE: horse power on nightster
ORIGINAL: rfranz1952
I respectfully disagree.
Perhaps unlikely for an injected (2007 plus) engine.
But a stage 1 rubbermount carburated moter will turn an average in the mid-70's. Mine very nearly makes 80, and perhaps could on a good day. And, this is possible with slip-ons.
A full stage 1 includes an ignition upgrade. Paying taxes (air and exhaust) is only stage .5.
ORIGINAL: Terp84Alum
Unlikely. Especially w/o an ignition upgrade.
ORIGINAL: 1200c
Seriously, the average for a Stage 1 on a rubbermount sportster is ~75 hp.
Seriously, the average for a Stage 1 on a rubbermount sportster is ~75 hp.
Perhaps unlikely for an injected (2007 plus) engine.
But a stage 1 rubbermount carburated moter will turn an average in the mid-70's. Mine very nearly makes 80, and perhaps could on a good day. And, this is possible with slip-ons.
A full stage 1 includes an ignition upgrade. Paying taxes (air and exhaust) is only stage .5.