Forums > Windsurfing General

How much $$$$$ of carbon cloth in a carbon boom ?

Reply
Created by col5555 > 9 months ago, 16 Mar 2016
col5555
WA, 384 posts
16 Mar 2016 9:14AM
Thumbs Up

Just interested to know the appx cost of carbon cloth used in a boom.
What would it cost if using pre preg.

sausage
QLD, 4873 posts
16 Mar 2016 12:10PM
Thumbs Up

col5555 said..
Just interested to know the appx cost of carbon cloth used in a boom.
What would it cost if using pre preg.




Col,
Don't know about the cost of carbon but did a very rudimentary calc on the square metreage of carbon used for say a 40mm dia 180-230 boom. Each layer used in the construction of the boom including tail piece, head and tail areas is around .85sq.m, so if say guessing there's 5 layers in total (i've included glass layers as carbon here) I reckon really roughly you could say 4.5sq.m* of carbon is used.

*totally wild estimate

You'd probably need 30lin.m (5 layers x 6m/layer) of braided carbon sleeve www.fibreglast.com/product/Braided_Carbon_Biaxial_Sleeve_02609_1/Braided_Sleeves

BTW - sail performed brilliantly on the RDM too.

AUS299
NSW, 75 posts
16 Mar 2016 1:29PM
Thumbs Up

A few years ago the prices to large manufacturers would be as follows, However keep in mind, most windsurfing products are made in Asia by some very big composite producers with significant purchasing power. So I would estimate that my pricing is alot higher than in reality.

Carbon tow $20 /Kg
Woven cloth (200gm Plain weave) $20 / M2
Standard epoxy resin $5 mixed Kg

Prepreg Unis 200gm 300mm wide $20 per L/M (40% resin content)

Tooling costs are significant and consumables need to be considered. Not to mention all of the R & D.

seanhogan
QLD, 3424 posts
16 Mar 2016 3:42PM
Thumbs Up

col5555 said..
Just interested to know the appx cost of carbon cloth used in a boom.
What would it cost if using pre preg.




aren't booms already made with prepreg ?

Mine are
http://al360.distrisurf.com/?page_id=368

100 euros per square meter for the al360 prepreg

col5555
WA, 384 posts
16 Mar 2016 1:48PM
Thumbs Up

Select to expand quote
seanhogan said..

col5555 said..
Just interested to know the appx cost of carbon cloth used in a boom.
What would it cost if using pre preg.



aren't booms already made with prepreg ?

Mine are


I think so Sean, but I thought most of those on this forum, who have used carbon fibre in their projects would have most likely purchased dry cloth.

seanhogan
QLD, 3424 posts
16 Mar 2016 3:52PM
Thumbs Up

in the link above I was amazed to see that they cnc machine 70 "bits" of prepreg to make one boom !

N1GEL
NSW, 861 posts
16 Mar 2016 5:16PM
Thumbs Up

seanhogan said..

col5555 said..
Just interested to know the appx cost of carbon cloth used in a boom.
What would it cost if using pre preg.





aren't booms already made with prepreg ?

Mine are
http://al360.distrisurf.com/?page_id=368

100 euros per square meter for the al360 prepreg


Wow... makes me appreciate the cost of a carbon boom a bit more now

seanhogan
QLD, 3424 posts
16 Mar 2016 5:05PM
Thumbs Up

indeed +7000 euros per steel mold (one for each boom size)

MikeyS
VIC, 1509 posts
16 Mar 2016 6:29PM
Thumbs Up

It's a bit like the cost of making a teenager. Materials are the least of it.

HF
WA, 167 posts
16 Mar 2016 5:32PM
Thumbs Up

I've actually made 2 wave carbon booms years ago and they used hardly any carbon, less than 1m. From memory cost was about $20 per arm, maybe less.

Would'nt ever do it again though, pain in the arse so I just bought new one's from a shop!

Mark _australia
WA, 23454 posts
16 Mar 2016 5:57PM
Thumbs Up

^^^ agreed, dunno about Sausage's math!!! vv



Subscribe
Reply

Forums > Windsurfing General


"How much $$$$$ of carbon cloth in a carbon boom ?" started by col5555