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2020 vendors
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Ok everyone. It's 2020, and I'm having a hard time finding suppliers for blue XPS Foam. Building supply companies maybe? online pages are all advertising for EPS foam, since it is actually better for docks. The plans call for 2 billets 10"x20"x96" right? Is there a better way to order billets? Smaller sizes are a little easier to find but what about gluing more blocks together? Bad news? Even aircraft spruce only sells 8" thick billets now. HELP
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Bruce McCormack
May come down to geography and shipping Dow Styrofoam Buoyancy Billets 7" x 20" x 8' (Supports 425 lbs.) -- Ring's EndOn 23Oct, 2020, at 21:22, Cody <cody.craig1985@...> wrote: Ok everyone. It's 2020, and I'm having a hard time finding suppliers for blue XPS Foam. Building supply companies maybe? online pages are all advertising for EPS foam, since it is actually better for docks. The plans call for 2 billets 10"x20"x96" right? Is there a better way to order billets? Smaller sizes are a little easier to find but what about gluing more blocks together? Bad news? Even aircraft spruce only sells 8" thick billets now. HELP
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The plans show BL (butt line) lengths. Each template sits at those buttons lines. Look at the plans and the directions show how long the individual foam cores are by butt lines. You will need to build a table that is flat and level. Then read how to cut the foam cores by the level lines being lined up level and set up for sweep back.
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Use only the blue styrofoam as there are foams that give off a cyanate poison gas. Read and re-read. Do you have the directions for building the LS1 with the carbon fiber spar? Bruce On Oct 23, 2020, at 10:10 PM, Bruce McCormack <bob2@...> wrote:
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I do not know but are the ten inch billets so you could get more cores out of one billet?
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Do not glue blocks together horizontally people did and died. Buy more billets to make cores one piece per plan if required. If you are worried about the cost of extra foam hmmm? Falling out of the sky in a broken machine is not a fun day. Regards, On Oct 23, 2020, at 7:23 PM, Cody <cody.craig1985@...> wrote:
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Dan Moses
On Sat, Oct 24, 2020 at 10:40 AM, One Sky Dog wrote:
Do not glue blocks together horizontally people did and died.I do not doubt the truth of this statement, but please elaborate. From a model aviation composites background, this is not an obvious blunder. Isn’t the foam designed to only take compressional forces? I’m all for following instructions to the letter, but one of the justifications for amateur aviation is education. Can you help me understand what some unfortunates learned the hard way? |
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I was actually planning on following Sams tutorial on quickheads. I especially like the photos, they seem to help more than the hand drawings sometimes. |
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Michael Dunning
Cody,
Try reaching out to Jon Matcho on www.canardzone.com (preferred) or here. My bet is that searching on that site will get you some answers, since the Long-EZ folks are in the same boat when trying to source materials for a 40+ year old kit. There are also some old threads here on the Q-List about the same topic (try searching 'flotation billet' or 'pipe billet'). Sorry I can't offer more help, but I'm rootin' for ya'! -- -MD #2827 (still thinking about planning on visualizing how to finish building) |
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Shear forces go through the foam trying to glue sheets together builds in a change in stiffness and loads always concentrate in stiffness changes.
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On Oct 24, 2020, at 10:47 AM, Dan Moses via groups.io <r90s@...> wrote:
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A simple Google search yielded https://store.eastcoastlumber.net/products/dow-dock-float-billet-10x20x96%7C102096B.html On Fri, Oct 23, 2020, 9:23 PM Cody <cody.craig1985@...> wrote: Ok everyone. It's 2020, and I'm having a hard time finding suppliers for blue XPS Foam. Building supply companies maybe? online pages are all advertising for EPS foam, since it is actually better for docks. The plans call for 2 billets 10"x20"x96" right? Is there a better way to order billets? Smaller sizes are a little easier to find but what about gluing more blocks together? Bad news? Even aircraft spruce only sells 8" thick billets now. HELP |
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...causing the foam to fail at the glued interface, followed by catastrophic delamination.... Finished it for you, Charlie. Hope you don't mind. Cheers, Jay Sent from my Verizon Wireless 4G LTE DROID "One Sky Dog via groups.io" <Oneskydog@...> wrote: Shear forces go through the foam trying to glue sheets together builds in a change in stiffness and loads always concentrate in stiffness changes. On Oct 24, 2020, at 10:47 AM, Dan Moses via groups.io <r90s@...> wrote:
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Brian Hutchinson
No recommendation from me for foam. Thanks for bringing up the matter of forces in the foam. I had watched a video on Metallurgy the other day considering the crystalline structure and it was said the forces move through the metal in a way that is similar to the way described here. Though I don't think the foam experiences true shear load (90 degree to the upper and lower surfaces) the forces wound think are variable and related to amount of deflection of wing tip to root. Vertically laminated seems the best way to join foam blocks I agree. These are the "little" considerations that have big effects and are what needs to be discussed in my opinion more important than enduring debates on why auto conversion engines are the devil and such.
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Mike Dwyer
https://tommydocks.com/products/48-floatation-log?variant=21454343176292¤cy=USD&utm_medium=product_sync&utm_source=google&utm_content=sag_organic&utm_campaign=sag_organic&gclid=Cj0KCQjwxNT8BRD9ARIsAJ8S5xbTdPbiNIHLZJky0jAEUcT8mPNvuxbZb02ROIHGc7FWprNpL8xrmqYaAkunEALw_wcB This looks like the stuff I built with! On Sat, Oct 24, 2020 at 11:22 PM Brian Hutchinson via groups.io <brianmh13=yahoo.com@groups.io> wrote: No recommendation from me for foam. Thanks for bringing up the matter of forces in the foam. I had watched a video on Metallurgy the other day considering the crystalline structure and it was said the forces move through the metal in a way that is similar to the way described here. Though I don't think the foam experiences true shear load (90 degree to the upper and lower surfaces) the forces wound think are variable and related to amount of deflection of wing tip to root. Vertically laminated seems the best way to join foam blocks I agree. These are the "little" considerations that have big effects and are what needs to be discussed in my opinion more important than enduring debates on why auto conversion engines are the devil and such. |
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Brian Larick
What is the difference between the current Dow Blue foam blocks and the original kit orange blocks?
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Brian
On Oct 25, 2020, at 18:12, Mike Dwyer <q200pilot@...> wrote:
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Bruce McCormack
The story way back was that the color change was to make it less attractive to beavers who attacked docks.
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On 25Oct, 2020, at 17:39, Brian Larick <blarick@...> wrote:
What is the difference between the current Dow Blue foam blocks and the original kit orange blocks?
Brian
On Oct 25, 2020, at 18:12, Mike Dwyer <q200pilot@...> wrote:
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Close, but that Tommydock stuff is in 48" blocks and we need 50"sections. It's the right material though. The big billets are out there, these newbies just need to dig a little deeper. Sam On Sun, Oct 25, 2020, 5:12 PM Mike Dwyer <q200pilot@...> wrote:
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What is wrong with using the original material/source?
Cheers, Jay
From: main@Q-List.groups.io <main@Q-List.groups.io> On Behalf Of Sam Hoskins
Close, but that Tommydock stuff is in 48" blocks and we need 50"sections. It's the right material though.
The big billets are out there, these newbies just need to dig a little deeper.
Sam
On Sun, Oct 25, 2020, 5:12 PM Mike Dwyer <q200pilot@...> wrote:
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Mike Dwyer
The orange had much bigger air pockets that sucked up more micro to fill. My kit came with the blue, but my buddies was orange. We hotwired both and they cut the same. I like the blue! On Sun, Oct 25, 2020 at 6:39 PM Brian Larick <blarick@...> wrote:
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Corbin <c_geiser@...>
No stock. I don’t think they have had for a while.
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Corbin On Oct 25, 2020, at 7:37 PM, Jay Scheevel <jay@...> wrote:
-- Corbin N33QR |
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Brad Walker
I've always found a phone call directly to Dow sales support will be helpful.. They can tell you who the local distributor is. -brad w. On Sun, Oct 25, 2020 at 6:16 PM Sam Hoskins <sam.hoskins@...> wrote:
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I have a flat table. Started making the jigs for mounting.
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