Mylar film vendors

[FI marco]

Hi Max2770,

The black part of the vacuum chamber is the same polystyrene but it is coated with a special paint that makes the polystyrene airtight. In the center is a small tube that we'll use to suck the air out.

Hi Gery,

Thanks for that link, that's a nice height of mirror foil. We have only mamaged to get foil with a maximum height of 1.50m (just about enough for our project) I have to say we've tried different (and expensive!) mirror foils but until now only Mylar seems to have the right 'stretchability' and properties for this application...

Our Mylar foil should be delivered tomorrow (monday) so we can finally test our mirror if all goes well.

Thanks,
Marco

[FI marco]

Yesterday we have finally put the mirror foil on the vacuumchamber and it seems to work great. In the picture below it looks all 'wrinkly' but that's mainly the reflections from the edges you see in the mirror & the fact the vacuum hasn't been adjusted yet.

Colli Mylar 2.jpg

The advantage of using the very thin 0.5 mil Mylar seems to be there's little vacuum needed to get it into the right shape! We've experimented with a small projection screen and we can see it's collimating so it works perfect.

The only big disadvantage we discovered (and suspected before) is that a mirror with a diameter this small (2.50 meter) is only suitable for a single seater. Once you take position off-centre to the left or right the image gets distorted. For us that is bad news because we planned this system to be used on our Kingair sim... So now it's clear why the high end sims all have these enormous mirrors.

Marco

[kermit]

Hi Marco, When I click on Attachm. 7725,
I get this;
Invalid Attachment specified. If you followed a valid link, please notify the administrator
Can`t see anything
greetz Henk

[FI marco]

Hi Henk,

I uploaded the picture again, I can see the pic here now so hopefully it works.

Gr,
Marco

[kermit]

Hi Marco,
I can see it now, I have to agree with you
its no good,
note
when can I pick it up , I will throw it away at no charge
greetz Henk

[FI marco]

Hi Henk,

I'll consider your kind offer to pick it up

Gr,
Marco