Carbon Fiber coils
#1
Professional Hoon
Rennlist Member
Rennlist Member
Thread Starter
Join Date: Jan 2010
Location: Melbourne, Australia
Posts: 7,090
Likes: 0
Received 4 Likes
on
4 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I came across this. I'm not sure if anyone knows about these but they seem pretty dam cool. and expensive. ![rockon](https://rennlist.com/forums/graemlins/rockon.gif)
Tony G & Patrick.. I'm looking your way LOL!
http://www.hypercoils.com/bellows-springs.html
![rockon](https://rennlist.com/forums/graemlins/rockon.gif)
Tony G & Patrick.. I'm looking your way LOL!
http://www.hypercoils.com/bellows-springs.html
#2
Race Car
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Yeah, talked to the guy who developed them at PRI in 2011. They actually came about from trying to use something like that for I believe bump stops in NASCAR, but NASCAR wouldn't allow them. They were one of a few finalists for the 2012 Most Innovative New Product of the Year from Racetech Magazine. http://www.performanceracingoils.com...P_nominees.pdf is a PDF of all of the finalists. Not sure where they finished overall, the PCM2 won, the Millers Nanodrive oil was second.
#3
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I remember seeing them back a few years. Still don't quite understand how they work...but I'm in!!!
..not really. :-)
..not really. :-)
#5
Professional Hoon
Rennlist Member
Rennlist Member
Thread Starter
Join Date: Jan 2010
Location: Melbourne, Australia
Posts: 7,090
Likes: 0
Received 4 Likes
on
4 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
They look quite neat. I know springs aren't heavy, but if you're concerned about 1kg of weight, i guess it's a good option. I'm not sure if it's in the category of sprung or unsprung weight?
#6
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
lol @ pun
I still don't get how these things work. I can't see how they compress and if not where is the movement?
I still don't get how these things work. I can't see how they compress and if not where is the movement?
#7
Professional Hoon
Rennlist Member
Rennlist Member
Thread Starter
Join Date: Jan 2010
Location: Melbourne, Australia
Posts: 7,090
Likes: 0
Received 4 Likes
on
4 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
The rings aren't flat. they're like a cone. because CF isn't brittle it has flex so when pushing the cone into a flat ring it acts like a spring. Like a suction cup with a hole in the middle.
Trending Topics
#8
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Interesting. Relying on the accuracy of the fibre in the weave to produce consistent flex.
#9
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Actually, you're relying on the epoxy compound to allow the flex. Imagine you put pieces of string in rubber - it would stretch until the string was taught. The right plastic binder will allow the carbon fiber weave to stretch a little bit and allow the conical washer to get a little shorter.
I looked up the specs - for my car, a 30 washer stack would equal an 8" spring with 3" of deflection (and cost $2,250 - vs. a $100 steel spring).
I looked up the specs - for my car, a 30 washer stack would equal an 8" spring with 3" of deflection (and cost $2,250 - vs. a $100 steel spring).
#11
Professional Hoon
Rennlist Member
Rennlist Member
Thread Starter
Join Date: Jan 2010
Location: Melbourne, Australia
Posts: 7,090
Likes: 0
Received 4 Likes
on
4 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Actually, you're relying on the epoxy compound to allow the flex. Imagine you put pieces of string in rubber - it would stretch until the string was taught. The right plastic binder will allow the carbon fiber weave to stretch a little bit and allow the conical washer to get a little shorter.
I looked up the specs - for my car, a 30 washer stack would equal an 8" spring with 3" of deflection (and cost $2,250 - vs. a $100 steel spring).
I looked up the specs - for my car, a 30 washer stack would equal an 8" spring with 3" of deflection (and cost $2,250 - vs. a $100 steel spring).
![Wink](https://rennlist.com/forums/images/smilies/wink.gif)
Now just wait for the "i've bought some carbon fiber bellows springs" thread
![Stick Out Tongue](https://rennlist.com/forums/images/smilies/tongue.gif)
Yep just one. As one spring is usually $75 - $100
#12
Race Car