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by TheMadScientist
September 16th, 2019, 11:30 am
Forum: General Competition
Topic: Powerhouse B Schools
Replies: 4
Views: 605

Powerhouse B Schools

Hi everyone- I was wondering why and how certain schools, especially those in division B manage to stay dominant for so long. With division C schools it makes more sense, since they have an influx of experienced SciOly members who already “know” their event strengths and subjects; but B schools are ...
by TheMadScientist
January 10th, 2019, 5:46 pm
Forum: 2019 Regionals & States
Topic: New Jersey 2019
Replies: 290
Views: 28485

Re: New Jersey 2019

I know that Hammarskjold Middle School placed fifth overall.
by TheMadScientist
December 31st, 2018, 12:57 pm
Forum: Boomilever B/C
Topic: Base failures
Replies: 27
Views: 3002

Re: Base failures

We are using round dowels.

We are letting the glue dry overnight.

Our boomilevers are failing at ~5 kg.

Thanks.
by TheMadScientist
December 31st, 2018, 12:05 pm
Forum: Boomilever B/C
Topic: Base failures
Replies: 27
Views: 3002

Base failures

Our boomilever team has tested three boomilevers and all of them have been failing at the base. We have been gluing 1/4 inch dowels to the tension members with gorilla glue. We also glued pieces of balsa wood over and around the dowel to increase surface area. Every time we test the dowel is ripped ...
by TheMadScientist
December 26th, 2018, 12:09 pm
Forum: Boomilever B/C
Topic: Configurations of the Boomilever
Replies: 14
Views: 3308

Re: Configurations of the Boomilever

The first configuration you posted is a picture of a tension boomilever. The second one is of a compression boomilever. Both are allowed but tension boomilevers are overall considered better because compression strength decreases with length- thus by making the compression member span the hypotenuse...
by TheMadScientist
December 22nd, 2018, 4:52 pm
Forum: Boomilever B/C
Topic: Boomilever B/C
Replies: 370
Views: 40961

Re: Boomilever B/C

You mean that it is ok to leave the last 5 cm of the boom without bracing at all? I was thinking it would drive down the score since booms would snap at the 5 cm point away from the distal end... or is that why the tension members are so important??
by TheMadScientist
December 22nd, 2018, 1:40 pm
Forum: Boomilever B/C
Topic: Boomilever B/C
Replies: 370
Views: 40961

Re: Boomilever B/C

Since the eyebolt of the loading block needs to pass through the boomilever to attach to the rest of the loading assembly, this means that there cannot be bracing where the eyebolt is. If this is true, then doesn't the boomilever depend on the strength of the last 5 cm of the compression member? The...
by TheMadScientist
November 26th, 2018, 10:20 am
Forum: Roller Coaster B
Topic: Roller Coaster B
Replies: 76
Views: 12680

Re: Roller Coaster B

How much gap have you been able to get with the new transparent tubing rule? The adjustable tubing makes it seem like we can easily get more gap even with smaller dimensions.

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