Toyota Auris Build Thread

[cRiPpLe_rOoStEr]

Originally Posted by alexshock

My goal is to make a combination of alumnium + fiberglass.

I guess you already know some rally cars are fitted with an underbody tray made out of plywood. It might seem strange at first, but maybe it's worth to take a look at.

[alexshock]

Originally Posted by cRiPpLe_rOoStEr

I guess you already know some rally cars are fitted with an underbody tray made out of plywood. It might seem strange at first, but maybe it's worth to take a look at.

Rally cars drive for few days I need something that lasts for years... In my current region climate is pretty "wet" all the year (rains, snow). I don't believe plywood will survive.

[cRiPpLe_rOoStEr]

Originally Posted by alexshock

Rally cars drive for few days I need something that lasts for years... In my current region climate is pretty "wet" all the year (rains, snow). I don't believe plywood will survive.

No wonder marine-grade plywood is used for that purpose on rally cars, instead of the cheapest varieties.

[alexshock]

Originally Posted by cRiPpLe_rOoStEr

No wonder marine-grade plywood is used for that purpose on rally cars, instead of the cheapest varieties.

This is a good point, I was not thinking of that.

[cRiPpLe_rOoStEr]

Maybe it's worth trying, as it surprisingly has a reasonable proportion of resistence to the weight, justifying its use even in weight-sensitive applications such as racing cars and motorcycles.

[Piotrsko]

Even better is aviation plywood, which is certified to be immersed in water. Every good homebuilder puts their wing skins in the swimming pool for a week before they attach it to the wing.

[alexshock]

Originally Posted by Piotrsko

Even better is aviation plywood, which is certified to be immersed in water. Every good homebuilder puts their wing skins in the swimming pool for a week before they attach it to the wing.

As far as I understood, marine and aviation plywood are actually same material. Am I wrong?

[cRiPpLe_rOoStEr]

Originally Posted by alexshock

As far as I understood, marine and aviation plywood are actually same material. Am I wrong?

I didn't even know there was aviation-grade plywood, yet there are even some military specifications for it.

[Piotrsko]

Yup there is aviation plywood. Specs are different than marine, namely glues and assembly, no knots allowed, limited species selection........ pricey as all get out, I only know of one manufacturer, everyone went marine because it was more common and half the price and about ten times the orange box price for the junk they now sell. If you have a vintage tube and rag airplane, it's your only allowed choice for repair.

[cRiPpLe_rOoStEr]

Originally Posted by Piotrsko

If you have a vintage tube and rag airplane, it's your only allowed choice for repair.

For something subjected to less stringent regulations, marine-grade plywood might be OK to address concerns regarding environmental conditions.