I bet you could save that 6 grams by not putting the cross cut in the core along with clamping off the feed line sooner so the laminate compresses more. It looks to me like you let it go long so the part could be over saturated. Otherwise pretty cool.
Glad to hear that you liked it. I think that you're probably right that the cross cuts would have added to the weight. I calculated how much extra weight per m2 there was from the core punch when I built it, I should do the same for the cross cuts. I do believe that the difference in weight was primarily driven by the correct saturation levels of this part vs the undersaturation from the wet layup with bag that I used to do, they were chock full of pinholes.
very good video. i would be interested to know more of this part after being used how long it took to be destroied again once the process is changed. and if you can post cure, and show the diferences in use of a cured and a non cured part regarding heat would be amazing. thanks for sharing.
G'day Mate, glad you liked the video. Sadly this is one part where post cure wont help it. The underside of the part is between 3-5mm (1/8" - 1/4") from the exhaust pipe. It is so hot there that the Tg (what post cure affects) doesn't matter, the actual epoxy burns a bit. However that doesn't affect the functionality of the part. The previous part was in service for over 3 years before the failure, and the failure was not caused by normal usage. In this instance the front two fasteners (if you look at the thumbnail one is in the destroyed place and the other is in top left corner next to the burnt section) were not reinstalled after the new colour scheme was applied. The car was running a test day and at high speed (up to 230kmph at that track) the air pressure caused the part to bend in half about the middle fasteners which then put the area that has been destroyed directly into the exhaust flow. There is no epoxy that I know of that will survive temperatures of ~1000 degree Celsius. With the front fasteners in the part has appropriate strength and retention to survive a much longer service life.
I bet you could save that 6 grams by not putting the cross cut in the core along with clamping off the feed line sooner so the laminate compresses more. It looks to me like you let it go long so the part could be over saturated. Otherwise pretty cool.
Glad to hear that you liked it.
I think that you're probably right that the cross cuts would have added to the weight. I calculated how much extra weight per m2 there was from the core punch when I built it, I should do the same for the cross cuts.
I do believe that the difference in weight was primarily driven by the correct saturation levels of this part vs the undersaturation from the wet layup with bag that I used to do, they were chock full of pinholes.
very good video. i would be interested to know more of this part after being used how long it took to be destroied again once the process is changed. and if you can post cure, and show the diferences in use of a cured and a non cured part regarding heat would be amazing. thanks for sharing.
G'day Mate, glad you liked the video. Sadly this is one part where post cure wont help it. The underside of the part is between 3-5mm (1/8" - 1/4") from the exhaust pipe. It is so hot there that the Tg (what post cure affects) doesn't matter, the actual epoxy burns a bit. However that doesn't affect the functionality of the part. The previous part was in service for over 3 years before the failure, and the failure was not caused by normal usage.
In this instance the front two fasteners (if you look at the thumbnail one is in the destroyed place and the other is in top left corner next to the burnt section) were not reinstalled after the new colour scheme was applied. The car was running a test day and at high speed (up to 230kmph at that track) the air pressure caused the part to bend in half about the middle fasteners which then put the area that has been destroyed directly into the exhaust flow. There is no epoxy that I know of that will survive temperatures of ~1000 degree Celsius. With the front fasteners in the part has appropriate strength and retention to survive a much longer service life.
@@CEWManufacturing nice thanks for your answer!