Big Boyz head porting (forums supporter!)
Banned
Joined: Nov 2005
Posts: 802
Likes: 3
From:
RE: Big Boyz head porting (forums supporter!)
ORIGINAL: pilot1996
Interesting discussion on Torque/Horsepower.
Great explanation. Torque is what determines how quickly it will accelerate, HP is what describes how high it will accelerate to.
We tend to like a lot of low end torque (low side of the RPM) because we don't care how fast we go, we just want to get up to speed quickly.
Mac
Interesting discussion on Torque/Horsepower.
Great explanation. Torque is what determines how quickly it will accelerate, HP is what describes how high it will accelerate to.
We tend to like a lot of low end torque (low side of the RPM) because we don't care how fast we go, we just want to get up to speed quickly.
Mac
Ive run across many a bike that put down killer low end tq numbers on a dyno, only to get killed on the road in pure acceleration by another bike with far less low end tq. numbers. Dyno Tq. measurement is not the big picture. Dyno's measure engine tq. only. But its how your bikes gearing is setup, thats what will determine how well matched your bike is setup and how well it will truely accelerate. In reality the 5speed vs. 6 speed debate could be tied into this as well as the gearing spacing and taking full advantage of the engines powerband will also play a role in how fast you are.
My bike is probably softer in real world torque than alot of others in lower portions of the rpm band, but I still can accelerate faster than most even with 2up riding due to the well matched gear setup I placed for my bike. You need to look at a much bigger picture.
Like I said, I use a dyno plots tq. figures to plot the actual cylinder fill and efficiency of the heads, and use the actual horsepower numbers to tell me what this bike really has under the hood for potential speed and acceleration. Then I use that knowledge to gear the bike correctly to take full advantage of the bikes power.
Intermediate
Joined: Sep 2005
Posts: 26
Likes: 0
RE: Big Boyz head porting (forums supporter!)
Michaelangelo and DeVinci did it with simple paint brushes and not air brushes and compressors with stencils designed on a computer! It's the man behind the tools and not the tools themselves. We should not be so quick to judge others without first hand experience and not just hearsay. IMO
Dave
Dave
Banned
Joined: May 2005
Posts: 14,496
Likes: 156
From:
RE: Big Boyz head porting (forums supporter!)
megaHDman
I have had a couple of email's from people(included from both this board and Harley Tech Talk) not overly impressed with the hand port work you do.
I have had a couple of email's from people(included from both this board and Harley Tech Talk) not overly impressed with the hand port work you do.
baggersport has furnished information to his business for people to check out and is a sponsor here also.
Banned
Joined: Nov 2005
Posts: 802
Likes: 3
From:
RE: Big Boyz head porting (forums supporter!)
ORIGINAL: The King
Michaelangelo and DeVinci did it with simple paint brushes and not air brushes and compressors with stencils designed on a computer! It's the man behind the tools and not the tools themselves. We should not be so quick to judge others without first hand experience and not just hearsay. IMO
Dave
Michaelangelo and DeVinci did it with simple paint brushes and not air brushes and compressors with stencils designed on a computer! It's the man behind the tools and not the tools themselves. We should not be so quick to judge others without first hand experience and not just hearsay. IMO
Dave
Banned
Joined: Nov 2005
Posts: 802
Likes: 3
From:
RE: Big Boyz head porting (forums supporter!)
ORIGINAL: traveler
Does anyone here have any experince with this shop?
Does anyone here have any experince with this shop?
I got a couple emails from members on this board today that are not impressed by this guys work, and plenty more from another forum with poor experiences in dealing with people from this place...........I think its best everybody see the big picture before commiting time and money to a place, any place for that matter, whether good or bad. Don't you agree?
Banned
Joined: May 2005
Posts: 14,496
Likes: 156
From:
RE: Big Boyz head porting (forums supporter!)
Mega
You opinion is as usual very agressive and done in poor taste. Your opinions are just that "Your Opinions" and as such ,you are entitled to them for what ever they are worth, but when you post them here like you have and the way you have attacking everybody that doesn't agree with you, it shows poor judgement on your part and lack of control in some areas.
I feel that if a person furnished the info on their business, that they are not hiding anything from potential customers.
This thread is locked.
[sm=lockeddance.gif]
You opinion is as usual very agressive and done in poor taste. Your opinions are just that "Your Opinions" and as such ,you are entitled to them for what ever they are worth, but when you post them here like you have and the way you have attacking everybody that doesn't agree with you, it shows poor judgement on your part and lack of control in some areas.
I feel that if a person furnished the info on their business, that they are not hiding anything from potential customers.
This thread is locked.
[sm=lockeddance.gif]
Ultimate HDF Member
Joined: Jan 2005
Posts: 7,950
Likes: 4
RE: Big Boyz head porting (forums supporter!)
ORIGINAL: MegaHDman
Mac, torque does NOT translate or necessarily determine that your bike will accelerate quickly or quicker. I tried to explain it, but check out this link from NRHS, they give a good true fundamental understanding of the full and exact definitions of torque and hp: http://www.nrhsperformance.com/tech_power.shtml Yes, this is indeed true. Many, many factors come into play when talking real world performance not just torque. The homilies mentioned are great oversimplifications but they get the point across with out going in to a laborous discussion.
Ive run across many a bike that put down killer low end tq numbers on a dyno, only to get killed on the road in pure acceleration by another bike with far less low end tq. numbers. Dyno Tq. measurement is not the big picture. Dyno's measure engine tq. only. But its how your bikes gearing is setup, thats what will determine how well matched your bike is setup and how well it will truely accelerate. In reality the 5speed vs. 6 speed debate could be tied into this as well as the gearing spacing and taking full advantage of the engines powerband will also play a role in how fast you are. I don't think anybody here, especially myself, would care to dispute the obvious.
My bike is probably softer in real world torque than alot of others in lower portions of the rpm band, but I still can accelerate faster than most even with 2up riding due to the well matched gear setup I placed for my bike. You need to look at a much bigger picture. Also true. When I raced motocross on a short twisty course, I would gear down; for dessert racing, I would gear up.
Like I said, I use a dyno plots tq. figures to plot the actual cylinder fill and efficiency of the heads, and use the actual horsepower numbers to tell me what this bike really has under the hood for potential speed and acceleration. Then I use that knowledge to gear the bike correctly to take full advantage of the bikes power. So you admit that the dyno does measure torque and that you use this to calculate or plot the rest. I did esentially the same thing in using Mr. Seat O'Dapants dyno to rejet my bike for altitude conditions as one week we would be racing high dessert and the next week at sea level or below. Since I could afford only one bike at the time to use for motocross, dessert, and trials riding, I had a few sprokets that I could interchange depending on the type of event and other conditions to get the best perfomance that I could.
ORIGINAL: pilot1996
Interesting discussion on Torque/Horsepower.
Great explanation. Torque is what determines how quickly it will accelerate, HP is what describes how high it will accelerate to.
We tend to like a lot of low end torque (low side of the RPM) because we don't care how fast we go, we just want to get up to speed quickly.
Mac
Interesting discussion on Torque/Horsepower.
Great explanation. Torque is what determines how quickly it will accelerate, HP is what describes how high it will accelerate to.
We tend to like a lot of low end torque (low side of the RPM) because we don't care how fast we go, we just want to get up to speed quickly.
Mac
Ive run across many a bike that put down killer low end tq numbers on a dyno, only to get killed on the road in pure acceleration by another bike with far less low end tq. numbers. Dyno Tq. measurement is not the big picture. Dyno's measure engine tq. only. But its how your bikes gearing is setup, thats what will determine how well matched your bike is setup and how well it will truely accelerate. In reality the 5speed vs. 6 speed debate could be tied into this as well as the gearing spacing and taking full advantage of the engines powerband will also play a role in how fast you are. I don't think anybody here, especially myself, would care to dispute the obvious.
My bike is probably softer in real world torque than alot of others in lower portions of the rpm band, but I still can accelerate faster than most even with 2up riding due to the well matched gear setup I placed for my bike. You need to look at a much bigger picture. Also true. When I raced motocross on a short twisty course, I would gear down; for dessert racing, I would gear up.
Like I said, I use a dyno plots tq. figures to plot the actual cylinder fill and efficiency of the heads, and use the actual horsepower numbers to tell me what this bike really has under the hood for potential speed and acceleration. Then I use that knowledge to gear the bike correctly to take full advantage of the bikes power. So you admit that the dyno does measure torque and that you use this to calculate or plot the rest. I did esentially the same thing in using Mr. Seat O'Dapants dyno to rejet my bike for altitude conditions as one week we would be racing high dessert and the next week at sea level or below. Since I could afford only one bike at the time to use for motocross, dessert, and trials riding, I had a few sprokets that I could interchange depending on the type of event and other conditions to get the best perfomance that I could.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Thread
Thread Starter
Forum
Replies
Last Post
Fandango6
General Harley Davidson Chat
2
Jan 21, 2006 06:53 PM
