36 replies to this topic

[RZT5]

Actually, weight has absolutely nada to do with your top speed. Throw some fat chicks in your car and you will reach the exact same top speed it will just take you a tad longer to get there. Otherwise trains would never reach more than 2mph.

beat me to it!

for all you skeptics, the top speed of your car is the speed at which drag (air resistance) = accelerating force (essentially the engines power). weight isnt in that equation at all

[Che'_Moderator]

beat me to it!

for all you skeptics, the top speed of your car is the speed at which drag (air resistance) = accelerating force (essentially the engines power). weight isnt in that equation at all

Increased weight increases the load on the tires. The increased deflection on the tire does increase the rolling resistance. On the other hand increased mass makes the vehicle more stable and less effected by atmospheric conditions. Either way weight does effect top speed.

[RZT5]

Increased weight increases the load on the tires. The increased deflection on the tire does increase the rolling resistance. On the other hand increased mass makes the vehicle more stable and less effected by atmospheric conditions. Either way weight does effect top speed.

ok ok, technically your right but all that has a relatively small affect on a car's top speed compared to the affect that weight has on a car's low speed acceleration

[JoshV70]

The one that burst into flames?

S60 is in street trim

Negative the white wagon that is waiting to get sent to a shop.

Tracking the S60 in street trim at the moment which has its positives and negatives...but at least I am getting the seat time and working my way toward a comp. license.

[villaconn]

The one that burst into flames?

S60 is in street trim

Burst into flames? What happened?

[villaconn]

Negative the white wagon that is waiting to get sent to a shop.

Tracking the S60 in street trim at the moment which has its positives and negatives...but at least I am getting the seat time and working my way toward a comp. license.

What sanctioning body are you going to be running with? What car are you prepping for competition? What groups are you running with now? I noticed you hail from KY & NJ. Are you tracking in the NE? Summit, The Glen, NJMP, Pocono, etc? My race car is a BMW and I am very involved with the local chapter of the club. I would like to see you come out to one of our driving events.

So, what happened to your wagon project. I was looking forward to see in it finished. Are you continuing with it?

Cheers,
Ricky

[volflo]

my car is at 1330 kg with some wild 100ft of tubing for the cage.
Assuming that the cage weighs like 40 to 50 kgs, it would be something like around 1290 naked.

If i recall correctly my car weighed in at 1550 kgs being fully stock.

Pretty much the only thing left to do is a CF hood and expecially get all seven windows except windshield replaced in macrolon/ lexan.

I would think that would gain another 30 to 40 kgs. But i am happy if someone knows better and corrects me.





more pics at volflo.de.vu

[Johann]

nothin about weight reduction other than he did it. but i was thinkin he sure did make a nice cage i would say

Without the fuel 1245 kg including the cage.

One seat, glass windows are still in.

[NW T5R]

Get rid of the stock seats. Go Recaro, Sparco, etc.

Next is convert to a manual.

Next if you can find a carbon hood.

Those are the main weight savers.

[JoshV70]

What sanctioning body are you going to be running with? What car are you prepping for competition? What groups are you running with now? I noticed you hail from KY & NJ. Are you tracking in the NE? Summit, The Glen, NJMP, Pocono, etc? My race car is a BMW and I am very involved with the local chapter of the club. I would like to see you come out to one of our driving events.

So, what happened to your wagon project. I was looking forward to see in it finished. Are you continuing with it?

Cheers,
Ricky

I run with NASA SE at the moment but will be going to NE when I get back home from school for the summer. Have run Road Atlanta and Mid Ohio. Will be running NJMP, CMP, Pocono, Lime Rock, and hopefully VIR as well as Summit this summer. What body are you with? Am planning on continuing with the project...have the motor and etc. almost all back together, just have to get the ball rolling on the shell again.

[mattyr51]

i took my spare, back seat(s), all the carpets out, and the pass seat over the summer .... for some things that went down ... no lie i felt a difference.. so it is worth is .... i am trying to get some new rims that weigh like ~15lbs ..like ssr. the stock rims are heavy as a mofo... this will make a difference as well
http://www.tirerack.com/wheels/WheelCloseU...&sort=Brand

[volflo]

Without the fuel 1245 kg including the cage.

One seat, glass windows are still in.

yet another nice built from the MAN

Handling with those cup tires should phenomal.

1245 kgs leaves me behind in sheer envy...on the other hand i know that weight distribution of the limo is even worse in terms of understeer than the wagon's. Especially with IPD bars up rear...

Johann, do you happen to know what the real weight difference between wagon and saloon is? And why does it seem so much, like 60 KGS?

[Johann]

yet another nice built from the MAN

Handling with those cup tires should phenomal.

1245 kgs leaves me behind in sheer envy...on the other hand i know that weight distribution of the limo is even worse in terms of understeer than the wagon's. Especially with IPD bars up rear...

Johann, do you happen to know what the real weight difference between wagon and saloon is? And why does it seem so much, like 60 KGS?

First of all I think you have more cage in the car. Also the heater core is still in ? Heater is something near 12 kg. I don't know if there is a weight difference between Alter 1 and Alter 2, could be in the type of steel used in the safety structure?. From what I can see the body is the same, no extra reinforcement like with the S70 body. No turbo, no intercooler, no turbo plumbing, no aux frame to the engine except for a small plate holding the alternator. The EHPS used is a bit heavier than the stock PS pump I think, didn't check. Minimal wiring harness, everything not used is also removed from the looms. No electric window motors. Manual operated window mechanisms are still in but fronts only have levers. No door panels except driver door. Everything inside the dash shell removed. All the sound deadening stuff has also been removed.

One thing I didn't do with the SDM but done with the red 850 is lightening the front bumper bar. I drilled many larger holes in the bar. (Just because the bar was out I wanted to see how that would go. )

Still the weight savings are much less than one would expect.

[NW T5R]

Also I would focus on removing as much weight from the front as possible. The weight distribution front to rear is horrible. You want to get it as close to 50-50 as possible.

Get it on a 4 corner scale to see where you are at.

[Gerry Gray]

Also I would focus on removing as much weight from the front as possible. The weight distribution front to rear is horrible. You want to get it as close to 50-50 as possible.

Get it on a 4 corner scale to see where you are at.

but if your remove the weight on the front it could be that you will loose a lot of traction on your front wheels. Think of that, youre not driving a Beamer.

[Jack8745]

but if your remove the weight on the front it could be that you will loose a lot of traction on your front wheels. Think of that, youre not driving a Beamer.

i would trade some traction for 50/50 distribution

[volflo]

First of all I think you have more cage in the car. Also the heater core is still in ? Heater is something near 12 kg. I don't know if there is a weight difference between Alter 1 and Alter 2, could be in the type of steel used in the safety structure?. From what I can see the body is the same, no extra reinforcement like with the S70 body. No turbo, no intercooler, no turbo plumbing, no aux frame to the engine except for a small plate holding the alternator. The EHPS used is a bit heavier than the stock PS pump I think, didn't check. Minimal wiring harness, everything not used is also removed from the looms. No electric window motors. Manual operated window mechanisms are still in but fronts only have levers. No door panels except driver door. Everything inside the dash shell removed. All the sound deadening stuff has also been removed.

One thing I didn't do with the SDM but done with the red 850 is lightening the front bumper bar. I drilled many larger holes in the bar. (Just because the bar was out I wanted to see how that would go. )

Still the weight savings are much less than one would expect.

1. Heater is gone, along with all piping. Even the plastic distribution channels has been cut right next to the ventilation motor and been replaced by a hose that now ends in a Honda Civic (Thanks Slater!) ari vent right next to the hand brake lever. btw: i doubt that the heater core weighs more than 5 kgs it felt like 50 layers og aluminum foil. Dont know about the 'water savings' tho.
2. i even got rid of all passenger window electric AND mechanical stuff
3. As far as Wagon and saloon is concerned: the wagon is significantly longer. And mybe they have some Volvo safety issues with that optional rear bench.