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  #61  
Old 11-02-2022, 06:23 AM
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GuyNoir GuyNoir is offline
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Quote:
Originally Posted by mbauer
Purchased 15-sheets of 10" x 10" x 0.5" EPS Foam Board.


Got a link to a specific source?
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Last edited by Ltvscout : 11-02-2022 at 09:23 AM.
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  #62  
Old 11-02-2022, 05:16 PM
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Default Yes/No

Quote:
Originally Posted by GuyNoir
Got a link to a specific source?


I do not have one for the 10"x10" x 1/2" sheets. Bought on eBay.

However buying much larger size sheets:
1/2" x 14" x 22" order of 24 sheets is $39: https://hotwirefoamfactory.com/036h...?keep_https=yes

They have several different sizes of the foam.

I am buying two boxes to have shipped to Alaska. Shipping is $350.

Mike
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  #63  
Old 11-02-2022, 07:47 PM
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Default Les

Quote:
Originally Posted by tbzep
All the more reason to build that escape tower.


.


Here are some photos of the prototype LES

Mike
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  #64  
Old 11-03-2022, 09:06 AM
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A thought...

How about Vostok and Soyuz in 1/72 or 1/35 scale

Building these using conventional materials requires rolling cardstock anyway, so you may be able to reduce the weight at the aft end with your techniques.


Bill
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  #65  
Old 11-04-2022, 08:47 AM
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Default Peter Always Book

Quote:
Originally Posted by Bill
A thought...

How about Vostok and Soyuz in 1/72 or 1/35 scale

Building these using conventional materials requires rolling cardstock anyway, so you may be able to reduce the weight at the aft end with your techniques.


Bill

Hi Bill,

I have a copy of Peter Always, Rockets of The World : Plan to eventually do all man carrying rockets.

I have not decided on a scale yet, I like big rockets.....

The 1/70 scale might be a good one to start with.

I am doing a 1/32 scale of all the early US manned rockets as a display to show size differences.

Mike
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  #66  
Old 11-04-2022, 09:21 AM
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Default Foam Options

Quote:
Originally Posted by GuyNoir
Got a link to a specific source?


Hi GuyNoir,

After thinking it over, decided the foam has a place for my airplane models as well. Been using balsa wood for the formers.

To buy and then ship to Alaska is over $124 per box that costs $39.

I called and talked with Victoria. She was a big help and even tried to source a local supply for me, because she knows how much the freight is.

Recommend to buy the EPS foam for home insulation from building supply stores.

Boy do they have a great marketing plan. Get you to buy the foam locally and use one of their tools to cut into what you need. This thought caught on about 20-minutes after the phone call.

I can buy their 4-ft bow, ship it to Alaska, buy one sheet of 2"x4ftx8ft sheet of foam for $46.78 locally.

One box of foam will supply approx. 35 rockets, while one sheet 4ftx8ft will supply 140, plus can cut at 1/4" thick for the smaller rockets. (1/70 Scale Saturn V size as a standard test subject)

I weld as a hobby; looking at some of the equipment that the hotwire foam industry uses. Might modify/create a new table to cut thin layers and also allow forming of different shapes/parts.

My airplanes will gain the most from this. Balsa wood is incredibly expensive, use it for spars and formers in my big models. The foam is lighter and gives better support.

The cost of the 4ft bow cutter, local foam sheet and shipping is close to the same price as two boxes of foam to ship to Alaska. $269+$79 ship+46.78 =$394.8; two boxes would have been $358 to get to Alaska.

Not sure how much the table will run, thinking to use conveyor rollers to feed, lever to raise /lower the bow in 1/4" increments, lazy Susan that can be used to make round bulkheads, once the bow is mounted vertical from the horizontal. Already have version of table in AutoCAD to see part fit and cost estimate.

Mike
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  #67  
Old 11-04-2022, 09:28 AM
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I still think a 4xD12 cluster (F48 equivalent) would doo it nicely for powr.
I'd enjoy watching the 'flight'....
Hyuk, yuk, yuk !!

Shipping costs is just one more of over 1000 reasons is why I'd never consider living in or even visiting AK.
Hatred of cold weather/snow/winter/being in the middle of nowhere is the biggest.
One can justify the high costs in living in Hawaii due to being pure paradise.
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  #68  
Old 11-05-2022, 09:34 AM
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Default Hawaii / Alaska

Quote:
Originally Posted by ghrocketman
I still think a 4xD12 cluster (F48 equivalent) would doo it nicely for powr.
I'd enjoy watching the 'flight'....
Hyuk, yuk, yuk !!

Shipping costs is just one more of over 1000 reasons is why I'd never consider living in or even visiting AK.
Hatred of cold weather/snow/winter/being in the middle of nowhere is the biggest.
One can justify the high costs in living in Hawaii due to being pure paradise.

Hawaii?

Over rated, lived there from 1979 through July 1981, (Military). Then when flying helicopters for the National Guard here in Alaska, got to go back 4-times a year to stay current in the simulators they had there.

I do miss the food. Steamers in Haleiwa has the best seafood around.

Finally made it to Alaska in 1982, still find a reason everyday to be here. The scenery is awesome.

Although this winter is starting off crazy.

Snow storm on Oct 26 was supposed to be up to 4.5", here in Nikiski it was 18" and then it rained in the morning while trying to snow blow my driveway. Wednesday the 2nd it dumped another 22". This is way to much snow this time of year. Temps are down to the teens for lows and highs around 30degree F. Winter is early this year!

Will be shoveling my roof later today, first time ever to that this time of year. Winds have drifts over 4ft high in places. Usually this chore happens just before the March snow fall. An earthquake might collapse the roof with the heavy rain soaked snow load up there.

Drive to work, 12-miles paralleling Cook Inlet with the Glacier views on the west side, drive on the east side bluff.

The larger of the these two will not be flown. Probably take into the Challenger Center to see if they would like it for display.

Yes, will test some clusters once it has flown/or needs them to fly high enough for a good deployment. Thinking the C6-3 is a great starting point.

End of motor is 1/8" stick out from the rocket fuselage shell. Fins have been made oversize.

Weight of rocket parts:
Fuselage shell: 3.6oz
BT50 glued to cardstock internal tube: 1.5oz w/bulkhead formers attached
Combined tube and shell: 5.4oz.
LES: 2.04gm


Mike

Last edited by mbauer : 11-05-2022 at 09:47 AM. Reason: Bigger Rocket
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  #69  
Old 11-05-2022, 11:23 AM
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tbzep tbzep is offline
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Quote:
Originally Posted by ghrocketman
Hatred of cold weather/snow/winter

Yet you live in Michigan.
At least you live far enough east of Lake Michigan that you don't get much lake effect snow from it. I doubt winds from the east are very common to get anything off Erie. I think maybe Buffalo wins the "Why the heck did we build a city here?" award sitting smack dab in the wrong spot on Erie.
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  #70  
Old 11-06-2022, 10:08 AM
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Another thought, and you know dangerous that can be...

If you need added strength in a section, instead of using thicker cardstock, consider borrowing an idea from the Atlas. Put an inflated balloon inside. Fill it with helium to lower weight; is that enough of a difference to help the CG if placed in the lower sections? It is counter-intuitive, but water vapor is also lighter than dry air.


Bill
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It is well past time to Drill, Baby, Drill!

If your June, July, August and September was like this, you might just hate summer too...

Please unload your question before you ask it unless you have a concealed harry permit.

: countdown begin cr dup . 1- ?dup 0= until cr ." Launch!" cr ;

Give a man a rocket and he will fly for a day; teach him to build and he will spend the rest of his days sanding...
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