water tank

A customer wants a water tank made of cf to fit inside
The trunk spare tire well. Approx 12 gallons capacity. How thick will
The tank need to be? It will fit snug against the trunk well so there won’t be mor than .005 inch clearance on the sides and bottom between the tank and car body.

I will take a stab at a guestimate and say 1mm thick. ? Its a race car.

is he competing in any Motorsport events. I would suggest just browseing the rules and regs of what he is entering just to be safe.

I would imagine 1-1.5mm would be plenty thick, especially if its only water. What is it for a water injection system on a boosted engine? For a 1mm thick cannister of water to be broken inside of the trunk, I would guess that takes a good bump :mad: Maybe have a layer of Kevlar for impact resistance?

Kevlar doesn’t add much impact resistance. Only resistance to shear. For impact loading add a tougher layer on the outside. Is this tank going to be pressurized at all?

Are you using prepreg? If so I would not think it would need to be very thick. How strong does it need to be? as I also assume it’s for a water system, but maybe a water to air charge air cooler.

I was thinking water methanol injection perhaps but he said only water will be in the
Tank. The overall cost was more than he wanted to spend for the cf tank anyhow. He may go a different route and use cf for other areas.

People are cheap. They want these custom jobs, but don’t comprehend the cost of materials and labor involved.
That’s why I just stay away from these guys that think they have race cars, but really they’re glorified crappy street cars and have no real money to spend.

+100000000000 Tet I am doing exaclty the same think. I hate this guys :mad: that want to make there jobs with you health and hard work in low cost:mad: . It’s better to give them for free instead of this…

After all this part nobody can see it :wink: Is not the right part to make advertising.