Fibreglass!

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The Wombat
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Fibreglass!

Postby The Wombat » Thu Aug 21, 2008 9:41 pm

Looks like I might have found a supplier of ready-made fibreglass parts here in Melb. Not just sheet, but sleeving and tube as well.

I'm yet to get prices, but who's interested?

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Scoop1261
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Postby Scoop1261 » Thu Aug 21, 2008 10:14 pm

Aye! 8)
Why Limit Yourself?

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fiberglass

Postby Burnwicken » Fri Aug 22, 2008 2:24 am

if it can be sent to bris? :D

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Postby ~RR~ » Fri Aug 22, 2008 6:41 am

Yep 8)
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Postby The Wombat » Fri Aug 22, 2008 7:23 am

Don't know about freight. These guys make fibreglass stock for the HV power control industry, and most of that is local here. I'll be calling them today to get prices. Are you guys mainly after body tube or fin stock?

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Postby Kryten » Fri Aug 22, 2008 8:43 am

Who's the manufacturer?
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Postby Scoop1261 » Fri Aug 22, 2008 8:56 am

Fin Stock 4 me
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Postby air.command » Fri Aug 22, 2008 1:36 pm

I'd be interested in tube. Is there any dimension information available of what they have?
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Postby The Wombat » Fri Aug 22, 2008 4:50 pm

Okay,

Tube comes in two types: polyester fibreglass pultrusions up to 3" in heavy wall (4-6mm wall), and epoxy fibreglass which is made to customer's spec in pretty much any size, in 3' lengths. I am sending specs of standard tube sizes to him for quotes. If there is a custom size you are after, drop me a PM.

Woven fibreglass sleeving is available up to 30mm diameter (for use in protecting shock cords or wiring.

Sheets come in a vast array of grades and thicknesses, but a standard sheet size is 8'x4'. To give a rough idea, a G-10-like grade in 2mm is $164 a sheet, although we would get a discount of 10-15% if we get a couple of sheets. Sheets will be able to be cut, although this may cost extra, depending on the number required per sheet.

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Postby Sumo310 » Fri Jan 30, 2009 7:35 pm

I'm digging up an old thread here, but did you have any success with this supplier?
L3

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Postby The Wombat » Sat Jan 31, 2009 5:06 pm

Nup. The b******ds won't ever get back to me. However, I have found 'a friend of a friend' who does custom f/glassing as a one-man business. I'll see what he can come up with.
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How heavy is it?

Postby marsboy » Tue Feb 17, 2009 8:01 pm

G'day, guys,
I know fibreglass body tubes sound cool and all but has anyone considered the weight of a fibreglass body tube? Aerotech's cardboard tubes are strong as all hell and light as. I like the IDEA of a fibreglass rocket but surely woven glass fibre must weigh a LOT more than cardboard. Hey maybe I'm wrong and you guys are talking about H+ rockets but my altitude champ, the Aerotech Mustang powered by a G80-10 reaches 3000' EASY and I'm sure it wouldn't attain that alt with fibreglass. At the end of the day, a well constructed and painted rocket (with NO visible spiral lines) should LOOK like it's made from more than cardboard and plastic - in fact, most lay-people would probably think it WAS made from fibreglass! Just a thought.
MARSBOY

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Postby Sumo310 » Tue Feb 17, 2009 8:37 pm

I think there are quite a few of us flying H and above motors :D

There are a few reasons why I like glass rockets, looks is not one of them.
L3

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Postby Scoop1261 » Tue Feb 17, 2009 9:55 pm

Mmmmmmmm...........Carbon Fibreyy! 8) 8) 8)
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Postby rocket_troy » Tue Feb 17, 2009 9:59 pm

Marsboy,
Cardboard is the perfect solution for sub 3 digit Newton thrust and will quite easily get you by a little past that, but it's not the solution for HPR users who don't mind the odd G or 50 with their flight profile or those not afraid of venturing near mach and beyond. You very quickly learn about the virtues of tensile strength per unit mass of structure and allowing generous structural margins.

TP


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