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View Full Version : Now for some real bigboy composite action..


#Rotor
10-01-2004, 03:11 PM
oh yeah!!! no more whimpy half-assed stockings and polyester-resin excuses for trying to be the real thing...... this is the real thing.... :D


http://rotor.procooling.com/images/carbon/boot-gaurd00.jpg
http://rotor.procooling.com/images/carbon/boot-gaurd01.jpg
http://rotor.procooling.com/images/carbon/boot-gaurd02.jpg
http://rotor.procooling.com/images/carbon/boot-gaurd03.jpg

real Carbon Fiber and some damn expensive epoxy resin to go with it....
I need to point that this is in-fact, my very first hand at using epoxy resins, they are somewhat different than the polyesters and I am not to disappointed at this first try.... though there is much room for improvement, mainly in the mold-making part of the effort, as I had so much trouble in getting the damn thing to separate, the mold got damaged..... NOT GOOD.. :(

aaa well,, the 2nd try is already curing.... hopefully this time it will go better...

BillA
10-01-2004, 03:22 PM
hope you've not got woven roving on woven roving ?
interlaminar shear strength drops way down

#Rotor
10-01-2004, 03:38 PM
Is why I will stay away from making suspension components and wheel-rims for a little bit, till I get a little more glued up in this...... I will stick to decorative items, mud-flaps and fearings for now.... :)

Some more pic's
http://rotor.procooling.com/images/carbon/boot-gaurd_take2_01.jpg
http://rotor.procooling.com/images/carbon/boot-gaurd_take2_02.jpg

ps: I don't quite understand what you mean by what you said.... care to enlighten me...
:cool:

BillA
10-01-2004, 04:21 PM
cf is nice, I was in the pipe business so only used glass
same composite design issue though

killernoodle
10-01-2004, 05:47 PM
MMMM, CF looks purdy. Are those new high heel soles for your lady friend? :D

Nice pedals, though.

#Rotor
10-01-2004, 06:39 PM
MMMM, CF looks purdy. Are those new high heel soles for your lady friend? :D

Nice pedals, though.


ha! the only LADY in my life, is getting herself a CF dash, in the not too distant future.... those pics in the other thread is of the prototype..... once it is 100% perfect, I'm going to pull a mold of it too, and then to copy it in CF..... is the reason why I now am getting myself familiar with the intricacies of working with this shit... and doing so on small stuff(this is very very expensive shit).... like my brothers YZF-R6's bootgards. will snap some pictures of this first one, on the bike tomorrow. As I said, very expensive stuff, screwing up on a big thing.... well that just ain't an option....

BillA
10-01-2004, 07:21 PM
missed this, sorry
"I don't quite understand what you mean by what you said.... care to enlighten me..."

the more fibers are 'worked' the more they degrade, woven roving (bi-directional) is used to get high fiber loadings which yields better tensile strength in those 2 directions
as the structure bends each layer tries to move relative to those adjacent resulting in a shear stress
woven roving to woven roving has very poor shear stress capability
this can be remedied somewhat by placing a layer of mat (randomly oriented fibers) between the layers of woven roving

a simplified description

killernoodle
10-01-2004, 07:58 PM
oh, they are for a motorcycle. I thought it was a go-fast pedal for your car.

#Rotor
10-02-2004, 11:38 AM
the 2nd mold is made and number two is allready in....
http://rotor.procooling.com/images/carbon/boot-gaurd_take2_03.jpg
http://rotor.procooling.com/images/carbon/boot-gaurd_take2_04.jpg
http://rotor.procooling.com/images/carbon/boot-gaurd_take2_05.jpg
http://rotor.procooling.com/images/carbon/boot-gaurd_take2_06.jpg

#Rotor
10-04-2004, 02:53 PM
Update time...... :drool:

http://rotor.procooling.com/images/carbon/boot-gaurd_take2_07.jpg
http://rotor.procooling.com/images/carbon/boot-gaurd_take2_08.jpg

my 2nd try yielded approximately a 437.03% improvement. :D
I am happy now :)

killernoodle
10-04-2004, 03:28 PM
Looks very nice.

nicozeg
10-04-2004, 09:01 PM
Once you are used, epoxy is a lot better than polyester. i'm so used to it, that it don't seems expensive to me given all the advantages :D

#Rotor
10-05-2004, 09:46 AM
I can agree with that.... much nicer stuff to work with indeed.....

here is some shots of it on the bike itself.......
http://rotor.procooling.com/images/carbon/boot-guard_onbike03.jpg
http://rotor.procooling.com/images/carbon/boot-guard_onbike02.jpg

Now just for some perspective.... a set like this, here in South Africa, R1200.00 give or take..... that's about $200US :mad: :D :D :D

#Rotor
10-06-2004, 01:56 PM
here it is with some clear coat, makes it look real 3D, allmost :D
http://rotor.procooling.com/images/carbon/Dscn0206_640.jpg
http://rotor.procooling.com/images/carbon/Dscn0212_640.jpg

9mmCensor
10-06-2004, 03:27 PM
missed this, sorry
"I don't quite understand what you mean by what you said.... care to enlighten me..."

the more fibers are 'worked' the more they degrade, woven roving (bi-directional) is used to get high fiber loadings which yields better tensile strength in those 2 directions
as the structure bends each layer tries to move relative to those adjacent resulting in a shear stress
woven roving to woven roving has very poor shear stress capability
this can be remedied somewhat by placing a layer of mat (randomly oriented fibers) between the layers of woven roving

a simplified description

Yeah, we do the same thing fiber glasing sail boats. A layer of bi-directional weave fibers, then a layer of omidirectional fibers, then another layer bi-directional weave fibers.

CF looks nice though.

nicozeg
10-06-2004, 11:42 PM
Nice looking parts. May I ask what is their use? I cant see what usefull thing they do in that bike. :p

#Rotor
10-07-2004, 02:01 AM
it's called "heal-guards" or "boot-guards" they probably don't do much other than look nice, but theoretically they are there to keep your boot from going too close to the rear swing-arm...