Mazda Rotary Club

Cars by Model Type => 3rd generation RX-7's => Topic started by: GrimR33per on March 15, 2012, 08:18:38 PM

Title: Carbon Bonnet - pins or no pins?
Post by: GrimR33per on March 15, 2012, 08:18:38 PM
As a member if a skyline forum. Lots of bonnets have flipped up at speed causing lots of damage.

Will it be the same for Rx7s?

Just thought I\'d ask before I make a choice on drilling holes in a bonnet.


Oh, and what do you use to protect the carbon from fading?
Title: Carbon Bonnet - pins or no pins?
Post by: lucus walker on March 15, 2012, 08:28:17 PM
yep  bonnet pins to b safe,  car cover
Title: Carbon Bonnet - pins or no pins?
Post by: L18M on March 15, 2012, 08:39:46 PM
if you dont want ugly pins then can get cf look aerocatches.
Title: Carbon Bonnet - pins or no pins?
Post by: batman on March 15, 2012, 09:10:36 PM
depends if you like the roof the shape that it is ?lol
Title: Carbon Bonnet - pins or no pins?
Post by: batman on March 15, 2012, 09:11:08 PM
also you can buy uv carbon polish
Title: Carbon Bonnet - pins or no pins?
Post by: GrimR33per on March 15, 2012, 09:26:13 PM
Are there any peeps on here that have the aerocatches?

Pics would be great please
Title: Carbon Bonnet - pins or no pins?
Post by: B9 KLF on March 15, 2012, 10:51:36 PM
If you change from a standard bumper to say a C West front then you will get a whole lot more air in and even the standrard bonnet will flex such that you can see it lift (at speeds over 70mph) in relation to the wings.

So if the bumper is non standard and youve got a carbon/fibreglass bonnet, pins are essential.

Mine are ethier side of the rear of the headlamps cos there\'s room underneath to fix the studs to.

Keith
Title: Carbon Bonnet - pins or no pins?
Post by: GrimR33per on March 16, 2012, 05:13:25 AM
Hi kieth,

Do you have any pics I could look at?

Thanks
Title: Carbon Bonnet - pins or no pins?
Post by: batman on March 16, 2012, 06:19:29 AM
i have aero catches
 
(http://i2.photobucket.com/albums/y10/ascaudio/Photo009-2.jpg)
 
(http://i2.photobucket.com/albums/y10/ascaudio/Photo045.jpg)
Title: Carbon Bonnet - pins or no pins?
Post by: GrimR33per on March 16, 2012, 05:22:42 PM
Cheers Batman.. Dont suppose you have any pics of where you bolted the sticky thingy.. And underside of the bonnet where the catches are..

Thanks
Title: Carbon Bonnet - pins or no pins?
Post by: batman on March 16, 2012, 06:29:11 PM
yes i cant take some but the easyest place is where the mushroom is for the bonnet hight adjustment
 
(http://i2.photobucket.com/albums/y10/ascaudio/IMG_0510.jpg)
 
(http://i2.photobucket.com/albums/y10/ascaudio/IMG_0510-1-1.jpg)
Title: Carbon Bonnet - pins or no pins?
Post by: batman on March 16, 2012, 06:30:26 PM
instructions .
1 remove the mushroom.
2 add the stick thingy into the hole and adjust to roughly the right height .
3 bolt into place then lower bonnet gently onto pin top mark area where pin hits bonnet
4 drill slowly the wrong way through the bonnet ie upwards using your marker underneath dont push let the drill do the work to much force will crack the carbon and spider fractures will spread through the bonnet the air inside the crack will spread badly as when the weave is formed the bonnet is under a vacum.!!!!
5 place the aero catch template on the top of the bonnet and mark the inner ring of the template .!! NOT THE OUTER RING OR YOUR CATCH WILL FALL ALL THE WAY THROUGH !!!!
6 mark your holes for the bolts in the aero catch and drill the holes again slowly
7 throw away the rust tastic bolts supplyed and buy some proper stainless nuts and bolts alan key ones look mint
8 bolt in catches and slowly close onto the pins any tapping adjustment can be made here so the pin enters the catch smoothly.
9 cut off the excess pin underneath.
10 oil catched regularly to avoid sticking .
 
that should help
Title: Carbon Bonnet - pins or no pins?
Post by: batman on March 16, 2012, 06:46:00 PM
(http://i2.photobucket.com/albums/y10/ascaudio/Photo006-1.jpg)
(http://i2.photobucket.com/albums/y10/ascaudio/Photo008-2.jpg)
(http://i2.photobucket.com/albums/y10/ascaudio/Photo009-2.jpg)
(http://i2.photobucket.com/albums/y10/ascaudio/Photo010-1.jpg)
(http://i2.photobucket.com/albums/y10/ascaudio/Photo011-1.jpg)
Title: Carbon Bonnet - pins or no pins?
Post by: GrimR33per on March 16, 2012, 06:49:26 PM
Awesome thanks!!

Do you mean throw away the pins nuts and spacers? And buy some decent aerocatch screws?

What sizes are the screws and nuts??

Looking at this one

http://www.ebay.co.uk/itm/AeroCatch-Push-Flush-Locking-Type-Panel-Fasteners-Black-/190636004074?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item2c62ca92ea#ht_1481wt_1394
Title: Carbon Bonnet - pins or no pins?
Post by: batman on March 16, 2012, 06:56:33 PM
nope that kits fine the pin bolts and washers are fine but the smaller bolts for the catch itself are crap mild steel think there an m6 maybe m4 but buy some stainless ones they get alot of weathering
the rubber pipe bits are for sleaving the pin so you cut to the desired hight that the bonnet will sit .
you can see them sitting on my pic
Title: Carbon Bonnet - pins or no pins?
Post by: Ada7 on March 16, 2012, 09:49:50 PM
I\'ve got a set of these to go on my bonnet to replace the tiny metal clips i have on there now which have gone a little rusty now.
They\'ll be going in the same place as Batman has them although i\'ve seen other have them right at the front corner of the bonnet next to the bumper or even in both places to be extra safe

Adam
Title: Carbon Bonnet - pins or no pins?
Post by: batman on March 16, 2012, 10:00:42 PM
i didnt have catches on my car when it was black and the carbon bonnet at about 150 would lift in the middle above the arches about six inches scary stuff! so i felt that it was needed more in the middle than the very front . there is nothing wrong with four . but i think two is enough and at 165 it was very still no fear of lift
Title: Carbon Bonnet - pins or no pins?
Post by: GrimR33per on March 17, 2012, 06:10:55 PM
Sorted.....   I now have some in hand... Just need to find some time to fit them ! :)