lightened flywheel power
Thread Starter
Joined: Apr 2003
Posts: 448
Likes: 0
From: USA
lightened flywheel power
Ok so i only have 300 to buy a new clutch and flywheel. Instalation is free. So i bought an exedy stage 2 clutch. for 190 shipped. but is it worth it to buy a new flywheel and will it really give me more power, and what is a good inexpensive flywheel.
Honda-Tech Member
Joined: Jun 2003
Posts: 2,120
Likes: 0
From: East Atlanta Village = Keep it Weird
Re: lightened flywheel power (vimsen)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vimsen »</TD></TR><TR><TD CLASS="quote">You will loose low end (slower take-off) with lighter fly wheel but gain high end power. </TD></TR></TABLE>
I've never heard of people losing power. A flywheel doesn't add horse power. It gives better acceleration. You might have to raise your idle a bit. Because I've heard of people having the Rev's drop so fast that the car stalls out.
I've never heard of people losing power. A flywheel doesn't add horse power. It gives better acceleration. You might have to raise your idle a bit. Because I've heard of people having the Rev's drop so fast that the car stalls out.
Joined: Sep 2002
Posts: 2,086
Likes: 0
From: i run, N.J.
Re: lightened flywheel power (vimsen)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vimsen »</TD></TR><TR><TD CLASS="quote">You will loose low end (slower take-off) with lighter fly wheel but gain high end power. </TD></TR></TABLE>
how can u lose low end when you"ll be accelerating quicker? im not saying your wrong but i thought u would accelerate quicker with a lighter flywheel..
how can u lose low end when you"ll be accelerating quicker? im not saying your wrong but i thought u would accelerate quicker with a lighter flywheel..
Honda-Tech Member
Joined: Jun 2003
Posts: 2,120
Likes: 0
From: East Atlanta Village = Keep it Weird
Re: lightened flywheel power (DOHCon15s)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DOHCon15s »</TD></TR><TR><TD CLASS="quote">so they only disadvantage is stalling out pretty much</TD></TR></TABLE>
not really. It all depends on your car....
not really. It all depends on your car....
Trending Topics
Joined: Sep 2002
Posts: 959
Likes: 0
From: Warren, RI, USA
Re: lightened flywheel power (DOHCon15s)
Losing low end power is BS. That is the equivalent of saying you will gain torque by getting a 50lb flywheel, which as we know, is ludicrous.
Technically you will lose rotating mass, extrapolate from that statement what you will.
I have an ACT ProLite (8.8lb) flywheel on my GSR and love it. The affect on my car was not what I expected in the acceleration department and from what my G-Tech pro tells me looking at acceleration G forces vs RPM, it did nothing. I still have to test it a few more times to be sure, I did that while I was breaking it in.
However, in terms of drivability and response, it is simply wonderful. Less nose dive when downshifting, smoother driving overall and from my experience the likelihood of stalling it more frequently is about .35674% greater. In other words, it's no big deal.
In short, I should have done this mod sooner, I really like what it has done to my car. Worth every penny so I say yes, while you are in there, have one put in.
Cheers,
Roy
Technically you will lose rotating mass, extrapolate from that statement what you will.
I have an ACT ProLite (8.8lb) flywheel on my GSR and love it. The affect on my car was not what I expected in the acceleration department and from what my G-Tech pro tells me looking at acceleration G forces vs RPM, it did nothing. I still have to test it a few more times to be sure, I did that while I was breaking it in.
However, in terms of drivability and response, it is simply wonderful. Less nose dive when downshifting, smoother driving overall and from my experience the likelihood of stalling it more frequently is about .35674% greater. In other words, it's no big deal.
In short, I should have done this mod sooner, I really like what it has done to my car. Worth every penny so I say yes, while you are in there, have one put in.
Cheers,
Roy
Honda-Tech Member
Joined: Feb 2003
Posts: 1,921
Likes: 0
From: San Jose, Ca, USA
Re: lightened flywheel power (Xumarius)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Xumarius »</TD></TR><TR><TD CLASS="quote">
I've never heard of people losing power. A flywheel doesn't add horse power. It gives better acceleration. You might have to raise your idle a bit. Because I've heard of people having the Rev's drop so fast that the car stalls out. </TD></TR></TABLE>
I've never heard of people losing power. A flywheel doesn't add horse power. It gives better acceleration. You might have to raise your idle a bit. Because I've heard of people having the Rev's drop so fast that the car stalls out.
</TD></TR></TABLE>
Joined: Oct 2003
Posts: 2
Likes: 0
From: Las Vegas, NV, United States
Re: lightened flywheel power (DOHCon15s)
I have an exedy lightweight flywheel and it is awesome. You won't lose any horsepower but your acceleration and deceleration will improve greatly. You might consider a short shifter soon afterwards however to speed up the shifts b/c the revs drop fast between shifts.
New User
Joined: Oct 2001
Posts: 383
Likes: 1
Re: lightened flywheel power (vimsen)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vimsen »</TD></TR><TR><TD CLASS="quote">You will loose low end (slower take-off) </TD></TR></TABLE>
BS
BS
Joined: Sep 2002
Posts: 120
Likes: 0
From: Rolling Meadows, IL, US
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">Originally posted by neouser on Feb/11/03 on team-integra.net
Ok, here's the deal. I read over that thread quickly, so this is just kinda touching on the subject.
First of all, the motor will make the same amount of torque, regardless of the weight of the flywheel, the gearing or the weight of the vehicle. Torque is merely the amount of rotational force the motor can generate. Period. Now, with that said, I'll explain what they're talking about and how they can be partially correct and incorrect at the same time...
<U>[SIZE=4]The Flywheel Stone: A Fable by Neo</U>[/FONT]
For this example, let's take a massive 500 lb. granite grindstone. That's going to be our flywheel. Now, let's say it's hooked up to a large crank with a long handle. There's 10 guys standing there turning that handle and spinning the grindstone. (From this point on, the grindstone will be known as the "flywheel stone") On the other side, we're going to take another 200 lb. disc, the same diameter as the grindstone, and it will later press against the face of the grindstone. This other disc is going to represent the clutch and we will put a load on it, say, a large arm that goes into a vat of molassas. So there's going to be a lot of resistance to keep this clutch disc from rotating. Ok, we have the situation set up, right?
Because the flywheel stone is 500 lbs., once it's in motion, it's gonna want to stay in motion. That's the law of inertia and momentum. When that clutch disc is pressed against the flywheel stone, it's going to 1) slow down the speed at which the flywheel stone is spinning by putting a load on it, and 2) accelerate to the speed at which the flywheel stone is spinning because of the momentum of the weight of the flywheel stone. The ten guys spinning the flywheel stone won't have to work as hard to keep it in motion and the molassas begins to get mixed.
However, now we have a new problem. The arm going into the vat of molassas is moving slowly, and instead of mixing it, it's only gently stirring it. So now, we need the 10 guys to speed up the stirring arm by increasing the speed of the flywheel stone. Easier said than done. Whereas the momentum of the heavy flywheel stone worked to their benefit when the clutch disc was dumped on it, it's now working against them when they're trying to accelerate the flywheel stone. It's just so darn heavy that it takes them much more effort to get it to accelerate.
A lighter flywheel stone would have been harder to keep in motion when the clutch disc was "dumped" on it, however, they could have compensated for that simply by spinning the flywheel stone a littler faster before dumping the clutch disc on it. There still would have been a drop in velocity, but it would have made accelerating the mixing arm a lot easier after the initial "clutch dump" because less weight would have resulted in less load, which would have translated to less rotational resistance.
So, after this long winded story on how weight affects the rotational speed of the flywheel stone and it's ability to turn the clutch stone and mixing arm, what have we learned?
We have learned that, in both processes, we had the same 10 guys, making the same amount of power and torque, to rotate the damn flywheel stone.
The power output never changed. Now, the important thing is to find a balance. Where the flywheel has enough weight to carry enough momentum on the launch (Which can be accomodated for by spinning it at a higher rpm to begin with.), and where it's light enough so that it takes less effort to increase the speed of it's rotation...
</TD></TR></TABLE>
enjoy
Ok, here's the deal. I read over that thread quickly, so this is just kinda touching on the subject.
First of all, the motor will make the same amount of torque, regardless of the weight of the flywheel, the gearing or the weight of the vehicle. Torque is merely the amount of rotational force the motor can generate. Period. Now, with that said, I'll explain what they're talking about and how they can be partially correct and incorrect at the same time...
<U>[SIZE=4]The Flywheel Stone: A Fable by Neo</U>[/FONT]
For this example, let's take a massive 500 lb. granite grindstone. That's going to be our flywheel. Now, let's say it's hooked up to a large crank with a long handle. There's 10 guys standing there turning that handle and spinning the grindstone. (From this point on, the grindstone will be known as the "flywheel stone") On the other side, we're going to take another 200 lb. disc, the same diameter as the grindstone, and it will later press against the face of the grindstone. This other disc is going to represent the clutch and we will put a load on it, say, a large arm that goes into a vat of molassas. So there's going to be a lot of resistance to keep this clutch disc from rotating. Ok, we have the situation set up, right?
Because the flywheel stone is 500 lbs., once it's in motion, it's gonna want to stay in motion. That's the law of inertia and momentum. When that clutch disc is pressed against the flywheel stone, it's going to 1) slow down the speed at which the flywheel stone is spinning by putting a load on it, and 2) accelerate to the speed at which the flywheel stone is spinning because of the momentum of the weight of the flywheel stone. The ten guys spinning the flywheel stone won't have to work as hard to keep it in motion and the molassas begins to get mixed.
However, now we have a new problem. The arm going into the vat of molassas is moving slowly, and instead of mixing it, it's only gently stirring it. So now, we need the 10 guys to speed up the stirring arm by increasing the speed of the flywheel stone. Easier said than done. Whereas the momentum of the heavy flywheel stone worked to their benefit when the clutch disc was dumped on it, it's now working against them when they're trying to accelerate the flywheel stone. It's just so darn heavy that it takes them much more effort to get it to accelerate.
A lighter flywheel stone would have been harder to keep in motion when the clutch disc was "dumped" on it, however, they could have compensated for that simply by spinning the flywheel stone a littler faster before dumping the clutch disc on it. There still would have been a drop in velocity, but it would have made accelerating the mixing arm a lot easier after the initial "clutch dump" because less weight would have resulted in less load, which would have translated to less rotational resistance.
So, after this long winded story on how weight affects the rotational speed of the flywheel stone and it's ability to turn the clutch stone and mixing arm, what have we learned?
We have learned that, in both processes, we had the same 10 guys, making the same amount of power and torque, to rotate the damn flywheel stone.
The power output never changed. Now, the important thing is to find a balance. Where the flywheel has enough weight to carry enough momentum on the launch (Which can be accomodated for by spinning it at a higher rpm to begin with.), and where it's light enough so that it takes less effort to increase the speed of it's rotation...
</TD></TR></TABLE>
enjoy
Joined: Oct 2002
Posts: 8,136
Likes: 3
From: New York, NY, USA
I guess the only real annoy thing that ive read from installing a lightened flywheel is the amount of rev matching due to fast rpm drops... however, if you rev match in the way you drive today, it shoudnt be a problem at all.
Do you guys recommend the 8lbs flywheel over the 12? I think our stock one is running at 16lbs.
Do you guys recommend the 8lbs flywheel over the 12? I think our stock one is running at 16lbs.
Joined: Sep 2003
Posts: 118
Likes: 0
From: san diego, ca, us
get a brochuer from ACT(advance clutch technology) or Exedy and it will tell u which flywheel is best to fit ure application. ACT Prolite is designed for road racing while the street lite is made more for drag.
Junior Member
Joined: Oct 2001
Posts: 745
Likes: 0
From: mansfield, ohio, usa
Re: lightened flywheel power (DOHCon15s)
try the act xact flywheel i have the 12.5 lb flywheel and it helps alot... i didnt lose any power and it helps the motor rev alot better........
Junior Member
Joined: Oct 2001
Posts: 745
Likes: 0
From: mansfield, ohio, usa
Re: lightened flywheel power (lccj0311)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lccj0311 »</TD></TR><TR><TD CLASS="quote">I have an exedy lightweight flywheel and it is awesome. You won't lose any horsepower but your acceleration and deceleration will improve greatly. You might consider a short shifter soon afterwards however to speed up the shifts b/c the revs drop fast between shifts.</TD></TR></TABLE> with my act the revs stay up considerably between shifts i dunno maybe the exedy flywheel is different
Honda-Tech Member
Joined: Jun 2002
Posts: 4,133
Likes: 0
From: New Jersey
Re: lightened flywheel power (fkncivic)
Just take it as it is. It is lighter for the crank to turn, thus allowing it to turn easier\faster, alas allowing you to accelerate\decelerate quicker. There is no way you will lose power because it has nothing to do with the engines' power.
Honda-Tech Member
Joined: Apr 2003
Posts: 1,467
Likes: 0
From: DC/MKE
Re: lightened flywheel power (Xumarius)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Xumarius »</TD></TR><TR><TD CLASS="quote">
I've never heard of people losing power. A flywheel doesn't add horse power. It gives better acceleration. You might have to raise your idle a bit. Because I've heard of people having the Rev's drop so fast that the car stalls out. </TD></TR></TABLE>
If I rev my motor up to 5kish and let the rpm's fall down naturally my motor will die. Not a big deal though, i have a 7.5lbs fidanza and I love it. Matter of fact I think that it is much easier to drive. I just think that it flows more naturaly, I have the flywheel paired up with a cm stg3 clutch.
I've never heard of people losing power. A flywheel doesn't add horse power. It gives better acceleration. You might have to raise your idle a bit. Because I've heard of people having the Rev's drop so fast that the car stalls out.
</TD></TR></TABLE>If I rev my motor up to 5kish and let the rpm's fall down naturally my motor will die. Not a big deal though, i have a 7.5lbs fidanza and I love it. Matter of fact I think that it is much easier to drive. I just think that it flows more naturaly, I have the flywheel paired up with a cm stg3 clutch.
Joined: Jan 2002
Posts: 30,199
Likes: 59
From: Nowhere and Everywhere
Re: lightened flywheel power (stevieteg)
I have the 7.5 lb Clutchmasters flywheel, it has never come close to stalling. I have never changed the idle speed or anything. I did stall it about 5 times right after I first installed it, but I got used to it quick.
The flywheel itself was about 300 tho.
The flywheel itself was about 300 tho.
Honda-Tech Member
Joined: Nov 2001
Posts: 2,800
Likes: 0
From: out shooting
flywheel will seem to lose torque b/c of less mass obviously but will definately rev up faster up top.
my 7.5 fidanza took a little getting used to, but its a good mix.
if you like downshifting, this is a MUST. might as well get one while you are down there, either the 7.5 fidanza, 8.8 prolote, or 12.5 streetlite is what i see most people running.
my 7.5 fidanza took a little getting used to, but its a good mix.
if you like downshifting, this is a MUST. might as well get one while you are down there, either the 7.5 fidanza, 8.8 prolote, or 12.5 streetlite is what i see most people running.