do they make these
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hybrid_flyer
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do they make these
i am looking for coilovers that are both dampening and spring rate adjustable!! Anoybody know if they are available??
Re: do they make these (hybrid_flyer)
spring rate adjustable? i dont think that possible.
or do you mean independant height and preload adjustment?
or do you mean independant height and preload adjustment?
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Project S13
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Re: do they make these (hybrid_flyer)
yea, you adjust the spring rate by taking out the coilover spring and putting in a new one, you probably mean something else...?
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ILikeMy240sx
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hybrid_flyer
- Posts: 790
- Joined: Thu Jun 17, 2004 12:51 pm
- Car: 95 240sx SE wrecked....89 240 coupe now
reason i ask, is we see these dampenin adjustable coilovers but it really doesnt do u any good on raod courses. When you want to change a cars response to changes in the road you need to change the spring rate not the dampening.
ok so here is the next question...does anybody know what the dampening coefficient of a stock 240 is?? Basically I want to up the stock spring rate but find shocks with a larger orifice.
According to a friend of mine who happens to be an automotive engineer that specializes in ride and handling thats what i need to get in order to improve the cars handling
ok so here is the next question...does anybody know what the dampening coefficient of a stock 240 is?? Basically I want to up the stock spring rate but find shocks with a larger orifice.
According to a friend of mine who happens to be an automotive engineer that specializes in ride and handling thats what i need to get in order to improve the cars handling
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skylndrftr
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2010 Ariel Atom (pending...)
well...the idea with the adjustable dampening is that you do the math in the first place to get the sprign rates right...that way your ride frequencies are around where they should be. then you should give the dampers a rough valving so that your correct valving is in the middle of there adjustment range then you tweak. Notice very few teams actually change springs at the track because they know what they need to be running before hand and just tweak for conditions with the shocks.
PS...woulddn't you be able to slightly (and i mean slightly) by changing the preload on a progressive spring?
PS...woulddn't you be able to slightly (and i mean slightly) by changing the preload on a progressive spring?
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Nissan-S14
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- Car: 95 Nissan 240SX SE
Re: (hybrid_flyer)
Well, for one thing. You will need a lot more then just coilovers to imrove your car handling. 2nd you have to figure out what your car will be used for, drag, drift, autoX, grocery go getter Then you prepare yourself a budget, on what you want to spend on your suspension. Let me just tell you, there is a lot more stuff that you will need then just simple coilovers. If you get coils ull need sways and so on and so forth. Everything needs to be in balance.hybrid_flyer wrote:reason i ask, is we see these dampenin adjustable coilovers but it really doesnt do u any good on raod courses. When you want to change a cars response to changes in the road you need to change the spring rate not the dampening.
ok so here is the next question...does anybody know what the dampening coefficient of a stock 240 is?? Basically I want to up the stock spring rate but find shocks with a larger orifice.
According to a friend of mine who happens to be an automotive engineer that specializes in ride and handling thats what i need to get in order to improve the cars handling
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Project S13
- Posts: 248
- Joined: Thu Nov 11, 2004 10:44 am
- Car: Nissan 240SX Fastback
Re: (hybrid_flyer)
skylndrfter is right on target.
Though I do not know the 'dampening coefficient' (are you referring to wheel rate?) of a stock 240, improving the handling over stock shouldn't be too difficult. Also what do you mean a larger orafice? I'm not catching those terms in particular and I have read up a little bit here and there. You may want to ask your friend who mentioned those terms to you if there are some other common terms for them.
I can say a few words that will probably help you out though
Alright, first of all do you have any specific purposes for changing out the stock struts and springs? I am assuming you want to do more than just daily driving the car, because the stock suspension is alright for that. So do you plan on autocrossing, road racing, drag, drifting, etc?
The reason I ask is because if you are planning on doing your driving (with the exception of drag racing cause I don't really want to speak on it...it's not my area of specialization so I'm not a good person to ask about that stuff =p) at a specific track or location, like autocrossing...if there's a primary lot or track, the best thing for spring rate tuning will be to take a look at the surface you will most likely be on.
If you're talking a track then you can really pick the right springs for each track, but most of the people who get coilovers can't afford to run around with springs for each occasion, we probably just make the closest happy median we can get to and do our best.
But if there's a specific location, the most scientific approach to determining the ideal spring rate is how bumpy the track is(the "track" stands for wherever the driving is taking place since odds are you aren't talking actual track racing). In general, the bumpier the track surface the softer spring rate will be needed for optimum handling from the springs. To answer the question of how soft is too soft or not soft enough, to get the very best spring rate for the job...that's where suspension frequencies come into play like skylndrfter was saying.
Anyway...there's not a lot I can say besides that with this much info, but if you want to read more about the subject (though for all I know you know more than me by a lot=p) There's Motorbooks Workshop's High-Performance Handling Handbook....it's pretty good and not too hard to grasp in terms of how it explains the math. Also Carroll Smith's Tune to Win is probably good. I have it but have not started reading it yet. It is probably better but more complicated to follow.
Anyway if you get into it that far it starts to involve more than just the spring anyway. I went through that to start to explain suspension frequency, and to help you see how useful spring rate will be. There may not be an ideal spring rate if you're talking about performance driving from one spring on a variety of surfaces. If you just want a general improvement though, there's a myriad of ways to achieve it. There's a lot to suspensions. @_@ Hope that helped some =p
Handling is a symphony, and no matter how great one part may sound, a harmony is what you're aiming for in the end.
Though I do not know the 'dampening coefficient' (are you referring to wheel rate?) of a stock 240, improving the handling over stock shouldn't be too difficult. Also what do you mean a larger orafice? I'm not catching those terms in particular and I have read up a little bit here and there. You may want to ask your friend who mentioned those terms to you if there are some other common terms for them.
I can say a few words that will probably help you out though
Alright, first of all do you have any specific purposes for changing out the stock struts and springs? I am assuming you want to do more than just daily driving the car, because the stock suspension is alright for that. So do you plan on autocrossing, road racing, drag, drifting, etc?
The reason I ask is because if you are planning on doing your driving (with the exception of drag racing cause I don't really want to speak on it...it's not my area of specialization so I'm not a good person to ask about that stuff =p) at a specific track or location, like autocrossing...if there's a primary lot or track, the best thing for spring rate tuning will be to take a look at the surface you will most likely be on.
If you're talking a track then you can really pick the right springs for each track, but most of the people who get coilovers can't afford to run around with springs for each occasion, we probably just make the closest happy median we can get to and do our best.
But if there's a specific location, the most scientific approach to determining the ideal spring rate is how bumpy the track is(the "track" stands for wherever the driving is taking place since odds are you aren't talking actual track racing). In general, the bumpier the track surface the softer spring rate will be needed for optimum handling from the springs. To answer the question of how soft is too soft or not soft enough, to get the very best spring rate for the job...that's where suspension frequencies come into play like skylndrfter was saying.
Anyway...there's not a lot I can say besides that with this much info, but if you want to read more about the subject (though for all I know you know more than me by a lot=p) There's Motorbooks Workshop's High-Performance Handling Handbook....it's pretty good and not too hard to grasp in terms of how it explains the math. Also Carroll Smith's Tune to Win is probably good. I have it but have not started reading it yet. It is probably better but more complicated to follow.
Anyway if you get into it that far it starts to involve more than just the spring anyway. I went through that to start to explain suspension frequency, and to help you see how useful spring rate will be. There may not be an ideal spring rate if you're talking about performance driving from one spring on a variety of surfaces. If you just want a general improvement though, there's a myriad of ways to achieve it. There's a lot to suspensions. @_@ Hope that helped some =p
Handling is a symphony, and no matter how great one part may sound, a harmony is what you're aiming for in the end.
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Nissan-S14
- Posts: 916
- Joined: Wed Dec 11, 2002 4:39 am
- Car: 95 Nissan 240SX SE
Re: (Project S13)
Ehhh, dont waist your money, just buy these JDM coilovers and your ride will become a super mean lean excellent handling machine.
http://cgi.ebay.com/ebaymotors...33582
http://cgi.ebay.com/ebaymotors...33582
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hybrid_flyer
- Posts: 790
- Joined: Thu Jun 17, 2004 12:51 pm
- Car: 95 240sx SE wrecked....89 240 coupe now
Re: (Nissan-S14)
too funnyNissan-S14 wrote:Ehhh, dont waist your money, just buy these JDM coilovers and your ride will become a super mean lean excellent handling machine.
http://cgi.ebay.com/ebaymotors...33582
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hybrid_flyer
- Posts: 790
- Joined: Thu Jun 17, 2004 12:51 pm
- Car: 95 240sx SE wrecked....89 240 coupe now
Re: (Project S13)
ok when i refer to dampenin coefficient and orifice it kinda goes hand in hand. the orifice is the space that fluid travels through (think valving). The dampening coefficient to dampening, as spring rate is to springs (dont really know any other way of explaining it).
the vehicle is a daily driver for now but will be used mostly for mountain passes, hence the need for a well tuned suspension.
ok Nissan-S14 i have already upgraded the sway-bars with suspension techniques. I have plans to add Cusco Strut bars to both front and rear, and get a Cusco LS 1.5 LSD. Also adding Kazama/TEIN tie rod combo. So the research I have been doing is leaning me towards the TEIN RE coilovers so far. The real hard part is goin to be finding a shop that can fully balance the vehicle when i am done.
the vehicle is a daily driver for now but will be used mostly for mountain passes, hence the need for a well tuned suspension.
ok Nissan-S14 i have already upgraded the sway-bars with suspension techniques. I have plans to add Cusco Strut bars to both front and rear, and get a Cusco LS 1.5 LSD. Also adding Kazama/TEIN tie rod combo. So the research I have been doing is leaning me towards the TEIN RE coilovers so far. The real hard part is goin to be finding a shop that can fully balance the vehicle when i am done.