Re: Boomilever B/C
Posted: December 10th, 2019, 1:48 pm
I've noticed some people talking about a trapezoidal design for the compression members. How would you put bracing on the sides of the trapezoid?
Modified ofc - otherwise it would not be legal. But the concept is good imo.dankdecidueye wrote: ↑December 10th, 2019, 3:47 pm sorry for double posting, but is tower chimney still a good design structure or is it not great anymore due to rules?
To have a legal boom, I would say most people this year take their 2019 design and widen compression at the wall (satisfying the 8 cm rule), and they narrow it down towards the distal end (satisfying the 5 cm block). This narrowing makes the compression look like a trapezoid like this —> \ / <— the top being against the wall and the bottom holding the block at the end
—-> \ / <—-scioly2345 wrote: ↑December 11th, 2019, 7:35 amTo have a legal boom, I would say most people this year take their 2019 design and widen compression at the wall (satisfying the 8 cm rule), and they narrow it down towards the distal end (satisfying the 5 cm block). This narrowing makes the compression look like a trapezoid like this —> \ / <— the top being against the wall and the bottom holding the block at the end
Tension stays for the most part the same as last years, except that the bend in the two tension pieces is more when you connect it to compression, however once a sufficient amount of weight is put on the bend in the tension pieces end up straightening out.
Wouldn't the tension members be on an angle then? Correct me if I'm wrong, but if you wanted the tension members to taper in, that'd probably bend them enough for breakage.scioly2345 wrote: ↑December 11th, 2019, 7:35 amTo have a legal boom, I would say most people this year take their 2019 design and widen compression at the wall (satisfying the 8 cm rule), and they narrow it down towards the distal end (satisfying the 5 cm block). This narrowing makes the compression look like a trapezoid like this —> \ / <— the top being against the wall and the bottom holding the block at the end
Tension stays for the most part the same as last years, except that the bend in the two tension pieces is more when you connect it to compression, however once a sufficient amount of weight is put on the bend in the tension pieces end up straightening out.
Tension bend is inevitable with my design at least, but they don’t break (bass usually stops it). Would it break if the tension was balsa? I don’t know, probably. Do I like the bend, no. It’s not ideal. I’ve actually been gluing tension of the inside of compression instead of outside (which makes the bend less bad).MadCow2357 wrote: ↑December 11th, 2019, 8:43 amWouldn't the tension members be on an angle then? Correct me if I'm wrong, but if you wanted the tension members to taper in, that'd probably bend them enough for breakage.scioly2345 wrote: ↑December 11th, 2019, 7:35 amTo have a legal boom, I would say most people this year take their 2019 design and widen compression at the wall (satisfying the 8 cm rule), and they narrow it down towards the distal end (satisfying the 5 cm block). This narrowing makes the compression look like a trapezoid like this —> \ / <— the top being against the wall and the bottom holding the block at the end
Tension stays for the most part the same as last years, except that the bend in the two tension pieces is more when you connect it to compression, however once a sufficient amount of weight is put on the bend in the tension pieces end up straightening out.
MadCow2357 wrote: ↑December 11th, 2019, 8:43 amWouldn't the tension members be on an angle then? Correct me if I'm wrong, but if you wanted the tension members to taper in, that'd probably bend them enough for breakage.scioly2345 wrote: ↑December 11th, 2019, 7:35 amTo have a legal boom, I would say most people this year take their 2019 design and widen compression at the wall (satisfying the 8 cm rule), and they narrow it down towards the distal end (satisfying the 5 cm block). This narrowing makes the compression look like a trapezoid like this —> \ / <— the top being against the wall and the bottom holding the block at the end
Tension stays for the most part the same as last years, except that the bend in the two tension pieces is more when you connect it to compression, however once a sufficient amount of weight is put on the bend in the tension pieces end up straightening out.