Boomilever B/C

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Re: Boomilever B/C

Post by xiangyu »

sneepity wrote: Fri Sep 18, 2020 4:36 am
Godspeed wrote: Thu Sep 17, 2020 6:48 pm
sneepity wrote: Thu Sep 17, 2020 10:02 am
of course it does, it's unclear as to whether it really means
i was looking through and apparently it meant that the boom has to be pulling at the hook? ofc it would tho
Unless the Boomilevers bottom part is longer than the top part, but then again if it were like that it would probably break instantly, but I don't quite know
hmm,isn't the compression longer than the tension? (or atleast when you measure it)?
edit:spelling mistakes
You guys are talking about two different types of boomilevers. There´s the tension boom and the compression boom, where one is compression < tension nd the other is compression > tension, both designs could work, but compression < tension is typically more popular.
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sneepity (Fri Sep 18, 2020 6:14 am)
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Re: Boomilever B/C

Post by sneepity »

xiangyu wrote: Fri Sep 18, 2020 5:57 am
sneepity wrote: Fri Sep 18, 2020 4:36 am
Godspeed wrote: Thu Sep 17, 2020 6:48 pm

Unless the Boomilevers bottom part is longer than the top part, but then again if it were like that it would probably break instantly, but I don't quite know
hmm,isn't the compression longer than the tension? (or atleast when you measure it)?
edit:spelling mistakes
You guys are talking about two different types of boomilevers. There´s the tension boom and the compression boom, where one is compression < tension nd the other is compression > tension, both designs could work, but compression < tension is typically more popular.
oh yeah, tysm! i think both designs are allowed (ofc)
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Re: Boomilever B/C

Post by Godspeed »

sneepity wrote: Fri Sep 18, 2020 4:36 am
Godspeed wrote: Thu Sep 17, 2020 6:48 pm
sneepity wrote: Thu Sep 17, 2020 10:02 am
of course it does, it's unclear as to whether it really means
i was looking through and apparently it meant that the boom has to be pulling at the hook? ofc it would tho
Unless the Boomilevers bottom part is longer than the top part, but then again if it were like that it would probably break instantly, but I don't quite know
hmm,isn't the compression longer than the tension? (or atleast when you measure it)?
edit:spelling mistakes
It's hard to explain what I mean, but it's possible to not obey that rule is what I'm trying to say
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sneepity (Fri Sep 18, 2020 11:11 am)
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Re: Boomilever B/C

Post by dholdgreve »

It all depends... if tension rods are longer than compression beams, and the rods are therefore on top, it has been called a tension boom. If the pieces that extend from the hook go out at 90 degrees to the testing wall, and are supported through longer angled compression beams beneath them, that type of design has been known as a compression boom. I think most experienced builders would agree that tension booms are usually more efficient. .
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Re: Boomilever B/C

Post by Godspeed »

dholdgreve wrote: Fri Sep 18, 2020 12:36 pm It all depends... if tension rods are longer than compression beams, and the rods are therefore on top, it has been called a tension boom. If the pieces that extend from the hook go out at 90 degrees to the testing wall, and are supported through longer angled compression beams beneath them, that type of design has been known as a compression boom. I think most experienced builders would agree that tension booms are usually more efficient. .
Oh I see. See, I've never done boomilever ever before so I have no clue what I'm doing and basing my knowledge off of common sense.
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Re: Boomilever B/C

Post by BobaTeaTastesGood »

So I'm new to boomilever. For the members, which grains does everyone use? I'm thinking C for compression and A or B for tension and the X struts.
Edit: I just checked our regional schedule. Apparently it will be held using SkyCiv, so I won't get to build anything... :x
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Re: Boomilever B/C

Post by Godspeed »

BobaTeaTastesGood wrote: Tue Sep 22, 2020 2:49 pm So I'm new to boomilever. For the members, which grains does everyone use? I'm thinking C for compression and A or B for tension and the X struts.
Edit: I just checked our regional schedule. Apparently it will be held using SkyCiv, so I won't get to build anything... :x
Are we allowed to talk about skyciv boomilever stuff on the forums? @bear
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Re: Boomilever B/C

Post by sneepity »

Godspeed wrote: Tue Sep 22, 2020 7:27 pm
BobaTeaTastesGood wrote: Tue Sep 22, 2020 2:49 pm So I'm new to boomilever. For the members, which grains does everyone use? I'm thinking C for compression and A or B for tension and the X struts.
Edit: I just checked our regional schedule. Apparently it will be held using SkyCiv, so I won't get to build anything... :x
Are we allowed to talk about skyciv boomilever stuff on the forums? @bear
Godspeed, itś always been around (skyciv), and I recommend you don't publicly ask if you're allowed to talk about something.
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Re: Boomilever B/C

Post by bearasauras »

SkyCiv has been mentioned at a few NSO-hosted workshops as the software for Digital Structure, so SkyCiv is public knowledge. What isn't released yet is the specific rules for Digital Structure.
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Re: Boomilever B/C

Post by sciolyperson1 »

From 2001:
"
The Winning boom was made by an amazing girl from california. It weighed 7.7 and held it all, so it was very high. 2nd was harriton with a 8. something boom, and 3rd was solon with a 9.6 gram boom. dont know any others
id love to chat about boom
steven
"

Source: https://scioly.org/obb/viewtopic.php?t=291&start=1#2

At this point in time, 15000g was "full weight" as well. However, score was determined by:

mass held/mass device + mass held/10
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