Making a Carbon Fiber Diffusor

Diffusor is here: ajhartmanaero....
To purchase parts or contact us: ajhartmanaero....
Facebook: / ajhartmanaero
Instagram: @ajhartmanaero
Recorded on GoPro 7 Black: amzn.to/2YW7B5N
Edited with Pinnacle Studio: amzn.to/30NWm11

[@gordsh1]

Maybe you could do a video showing us how you make the mold/plugs? I see a lot of videos how you lay up carbon fiber, but that is pretty straightforward as long as you have a mold. I think making molds are more sophisticated and more complicated. How do you make molds? Could you do a video on that?

[@ajhartmanaero]

Yeah you are not nearly the first one to ask me about the molds. Unfortunately I wasn't doing videos when I made just about all of my molds years ago. I do have some upcoming parts planned and will definitely do videos on molds and what goes into them.

[@Philness]

I was going to ask the same thing

[@kingofherdaz]

Molds are definitely the hardest part about composites

[@alexmanning8710]

Beautiful parts there my man! You make it seems simple but something tells me otherwise!!!!

[@davidheath5693]

Really liking your videos great information for a newbie like me who is wanting to learn everything about carbon fiber,now to get busy working on my own racecar👍

[@dogbone86]

Thanks for making these videos AJ! Very cool to watch and learn. I noticed you ran the infusion across the diffusor components. What is the advantage of running the flow of resin across instead of lengthwise? Time? Also if you did run it lengthwise (low point of mold to high point of mold) would it help any air bubbles to escape more easily?

[@odortiz]

your parts always look amazing. i'll have to swing by one of your races to take a closer look

[@evangauci7548]

Really nice work mate the final product looks awesome! What trimming tool do you use to trim down all your parts?

[@ajhartmanaero]

Dremmel with a diamond grit wheel.

[@evangauci7548]

@@ajhartmanaero Thank you!

[@ExSheriffFattyBoySkinnyArms]

KyleEngineers is dashit!

[@jeanfrancoispoivre4438]

Super ta vidéo 👍

[@alexbiegaj794]

Hello! Do you design in any draft to the tunnel walls to help with mold release? I assume no draft on the tunnel sides would be best for matching up the walls of the three tunnels, but perhaps at the expense of some difficulty with mold release? Thank you

[@rohanpuri1989]

Great work as always. Do you keep the vacuum pump on during the cure? What resin and hardener do you use?

[@ajhartmanaero]

I keep it on. I use RhinoLinings infusion epoxy but just about any ifusion epoxy system would work fine.

[@SparkysAdventure]

dawg this is so cool

[@michael9218]

Could you list the materials used? Weight and weave. Core material. Do you ever use biaxial weaves in your parts for torsional stiffness? Love your videos!

[@Diamondsintherubble]

Can you do a video on mounting a rear diffuser? I’m mostly interested on “locating” the diffuser, because I like the look of a carters custom diffuser however they mount theirs to the gas tank cover and I plan to use a fuel cell. I basically want to know how to keep the diffuser’s position even if I remove the bumper

[@ajhartmanaero]

I go over how I did mine here: kzbin.info/www/bejne/rX-ypp2bea17sLs

[@nendahnuraida7213]

what is the liquid that is sprayed with the spray before sticking the carbon fiber

[@johnterpack3940]

Is there any point to a diffuser if you don't have a full belly pan?

[@mkfourgli1]

Hey man new sub. Great video, very informative. Quick question, did you build that oven

[@ajhartmanaero]

Yes. Did a video on it a bit ago.

[@E.T.GARAGE]

I wonder what a CF Targa Top for a C4 Corvette would cost to have made.

[@RLCPLUMBINGLLC]

Let me tell you guys what bagging is the hardest part of the whole process. I wish I could work in your shop to get hands on experience

[@user-se2tc4ul9h]

What tool are you using to trim the edges so clean and straight?

[@tkmain]

What material and thickness do you use on the surface of your cutting table?

[@NoanatorTV]

can you say what that core material is? seems super flexible. I normally use rohacell foam wich is very hard to drape.

[@ajhartmanaero]

Soric

[@Archangel3083]

What angle do you use? Most I’ve researched are in the 6-7 degree range and some are really high in the 15 degree range. I’m going to add one to the Cobra Daytona Coupe I’m building.

[@ajhartmanaero]

Depends on a lot of things.

[@jr3628]

you mentioned reusable bags? wouldn't creating a reusable bag just be doing a layup with silicone and then allowing to cure, would be interested in your process for creating the reusable bags.

[@ajhartmanaero]

Effectively yes, but there are some intricacies to inlet and vacuum line, and since my molds flanges weren't set up for them getting them to seal air tight can be an issue as well. And then all the money and time making them will need to be recouped to make it worth it as well.

[@reidonz5848]

Are u using 12k carbon for layup? Also how thick is the core mat? Awesome work bud.

[@ajhartmanaero]

Yes. And 2mm on this one.

[@cyberblade6669]

how big your shop

[@Fuji8189]

hey ! can i know what kind of drill bits you use to drill carbon fiber ?

[@ajhartmanaero]

You can use regular hss drill bits. I have carbide bits specifically for carbon but one bit is $50-60.

[@Fuji8189]

@@ajhartmanaero thank you !

[@slaps101]

What's the rough weight for the 3 piece diffuser?

[@ajhartmanaero]

About 5lbs.

[@ODGColornChrome]

How do you determine the number of pleats needed, and their location?

[@ajhartmanaero]

Generally in line with any large mold shape deviations.

[@thegoblinofy]

How are you combining these modular parts together? Bolts or adhesives?

[@ajhartmanaero]

Bolts

[@thegoblinofy]

@@ajhartmanaero how are you making sure that the bolts aren’t tripping the airflow up then? How are you keeping them flush?

[@ajhartmanaero]

@@thegoblinofy flush bolts.

[@АлмазАлмаз-б9ш]

Есть у кого либо 3д модели достойные для матрицы ?