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Old Nov 05, 2012, 12:18 PM
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lomce-what's Avatar
United States, TX, Amarillo
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Dear Horizon Hobby, please stop using EPS on these awesome planes. Other than that looks great!
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Old Nov 05, 2012, 01:16 PM
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USA, CA, Chico
Joined Feb 2011
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Quote:
Originally Posted by flyrtim View Post
where can I learn about what a 300 size is?

my google search was not so fruitful.
300 size refers to size of brushless motor used,, as in E Flites 300 size zero, or their 300 size p-40 , or their grasshopper . They usually have wingspans ranging from 25 in and up, and can weigh anywhere from 8-11 oz
Here's a link to E Flites most recent 300 size

http://www.e-fliterc.com/Products/De...ProdId=EFL6175
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Last edited by Airman74; Nov 05, 2012 at 01:38 PM. Reason: Addition
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Old Nov 05, 2012, 01:36 PM
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United States, CA, Mt Shasta
Joined Jun 2010
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Quote:
Originally Posted by lomce-what View Post
Dear Horizon Hobby, please stop using EPS on these awesome planes. Other than that looks great!
Quote:
Originally Posted by Airman74 View Post
300 size refers to size of brushless motor used,, as in E Flites 300 size zero, or their 300 size p-40 , or their grasshopper . They usually have wingspans ranging from 25 in and up, and can weigh anywhere from 8-11 oz
Is EPS foam what the UMX Sbach and CC are made of mister answer guy?
Thank you.
Mike
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Old Nov 05, 2012, 01:58 PM
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United States, VA, Winchester
Joined Nov 2010
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Quote:
Originally Posted by lomce-what View Post
Dear Horizon Hobby, please stop using EPS on these awesome planes. Other than that looks great!
If they didn't use EPS it would not fly half as good as it does. It would be to heavy with EPO and fly like a HobbyKing plane. At least parts are cheap enough to replace when they start looking ragged
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Old Nov 05, 2012, 02:05 PM
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Quote:
Originally Posted by shastamike View Post
Is EPS foam what the UMX Sbach and CC are made of mister answer guy?
Thank you.
Mike
EPS or expanded polystyrene IS the stiff beer cooler type of foam,, EPP or expended polypropylene is the more spongy type of foam found on some of the bigger parkzone planes,, it typically has a little more give than breaking than EPS but in general EPS is usually a little lighter for a given volume. Then there is EPO or expanded polyolyfin ( not sure of spelling on that one ) some people feel that EPO is best of both worlds,, its has some of the give of EPP but with weight somewhat like EPS, also EPO tends to have a nice smooth surface finish
And yes the CC and Sbach are EPS, as are the 300 zero and p-40,, I'm not quite sure but I believe even EPO is still heavier than EPS
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Old Nov 05, 2012, 02:25 PM
Whatever goes up must go BOOM
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United States, OH, Kent
Joined Mar 2012
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Wow. I learned alot from this thread......first of all 100% of getting this Edge sometime and the proper way to get confused while reading a single post.

-joker
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Old Nov 05, 2012, 03:20 PM
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Originally Posted by joker24458 View Post
Wow. I learned alot from this thread......first of all 100% of getting this Edge sometime and the proper way to get confused while reading a single post.

-joker
Sorry!!! :-)
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Old Nov 05, 2012, 03:22 PM
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United States, PA, Allentown
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Quote:
Originally Posted by Airman74 View Post
EPS or expanded polystyrene IS the stiff beer cooler type of foam,, EPP or expended polypropylene is the more spongy type of foam found on some of the bigger parkzone planes,, it typically has a little more give than breaking than EPS but in general EPS is usually a little lighter for a given volume. Then there is EPO or expanded polyolyfin ( not sure of spelling on that one ) some people feel that EPO is best of both worlds,, its has some of the give of EPP but with weight somewhat like EPS, also EPO tends to have a nice smooth surface finish
And yes the CC and Sbach are EPS, as are the 300 zero and p-40,, I'm not quite sure but I believe even EPO is still heavier than EPS
I'm pretty sure the bigger parkzone planes use a foam like EPO, not EPP.
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Old Nov 05, 2012, 03:56 PM
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Quote:
Originally Posted by zmonster97 View Post
I'm pretty sure the bigger parkzone planes use a foam like EPO, not EPP.
Could be,, I always get a little confused between those two
I just know they're NOT EPS like the little ones are
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Old Nov 05, 2012, 03:57 PM
Whatever goes up must go BOOM
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United States, OH, Kent
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Quote:
Originally Posted by Airman74 View Post
Sorry!!! :-)
lol I just do not get what EPP and EPO and EPS are.........very cunfusing for an 11 yr old brain.

-joker
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Old Nov 05, 2012, 04:09 PM
Team Aztech Aeromodels!
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United States, PA, Allentown
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Quote:
Originally Posted by Airman74 View Post
Could be,, I always get a little confused between those two
I just know they're NOT EPS like the little ones are
Right.
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Old Nov 05, 2012, 05:44 PM
The Earth got in the way!
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United States, OH, Canal Winchester
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The bigger planes use EPO not EPP. As for the Edge and all the UM/UMX planes, well if they used EPO they'd be too heavy and EPP doesn't allow for much detail and both are heavy and would need more structure compared to EPS.

If you don't crash it won't matter
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Old Nov 05, 2012, 06:00 PM
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United States, CO, Longmont
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Quote:
Originally Posted by kuczy View Post
The bigger planes use EPO not EPP. As for the Edge and all the UM/UMX planes, well if they used EPO they'd be too heavy and EPP doesn't allow for much detail and both are heavy and would need more structure compared to EPS.

If you don't crash it won't matter
yes!
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Old Nov 05, 2012, 06:03 PM
**I'm Battman**
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It's typo time again...
rc
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Old Nov 05, 2012, 07:57 PM
certified crash instructor
Scottsdale Arizona
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That box must have come from precision aerobatics lol!
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