What if you rounded the end of the tension member so it was flush with the drilled holeVstorm34 wrote:If the tension is a square piece of wood and not round then using a drilled hole will reduce the surface area of the joint. A notch will a allow for more coverage since the flat edges will have more contact with the wood.Cow481 wrote:Wouldn’t it be easier and more effective to just drill a hole and gorilla glue the tension pieces to the dowel rod?
Boomilever B/C
- TheSquaad
- Member
- Posts: 166
- Joined: March 18th, 2017, 5:14 pm
- Division: Grad
- Has thanked: 0
- Been thanked: 5 times
Re: Boomilever B/C
-
- Member
- Posts: 14
- Joined: July 19th, 2018, 8:25 am
- Division: C
- State: VA
- Has thanked: 1 time
- Been thanked: 0
Re: Boomilever B/C
That's definitely possible. Though depending on the starting thickness of the wood, sanding too much off to create a perfect circle might leave that end much more brittle than the rest of the piece. If that happens then the tension will just break instead of the joint failing.TheSquaad wrote:What if you rounded the end of the tension member so it was flush with the drilled holeVstorm34 wrote:If the tension is a square piece of wood and not round then using a drilled hole will reduce the surface area of the joint. A notch will a allow for more coverage since the flat edges will have more contact with the wood.Cow481 wrote:Wouldn’t it be easier and more effective to just drill a hole and gorilla glue the tension pieces to the dowel rod?
Re: Boomilever B/C
out of curiosity, if a boomilever is built and ready to go but somehow the tension arm cracks and is wiggly what would be the best option? im wondering because i know in other balsa events people just bring extra wood and just pop it out but for boomilever you cant really take out the tension pieces. This is just an if scenario but im curious
- TheSquaad
- Member
- Posts: 166
- Joined: March 18th, 2017, 5:14 pm
- Division: Grad
- Has thanked: 0
- Been thanked: 5 times
Re: Boomilever B/C
If a tension member ever broke, I’d put balsa strips on all 4 sides of the break to re-straighten it, as though it were a cast.FermiGod wrote:out of curiosity, if a boomilever is built and ready to go but somehow the tension arm cracks and is wiggly what would be the best option? im wondering because i know in other balsa events people just bring extra wood and just pop it out but for boomilever you cant really take out the tension pieces. This is just an if scenario but im curious
A better solution for competitions is just bring 2 boomis.
-
- Coach
- Posts: 573
- Joined: February 6th, 2006, 2:20 pm
- Division: B
- Has thanked: 0
- Been thanked: 7 times
Re: Boomilever B/C
Boy, this is what I'd have to call a "Catastrophic Failure." If your tension rod goes on one side, I'm not even sure it could carry the 3kg to keep you in Tier 1. If it were broken at the competition I guess you'd have no choice but to patch as recommended by squaad... but if it happened before a competition, i'd be rebuilding from scratch.FermiGod wrote:out of curiosity, if a boomilever is built and ready to go but somehow the tension arm cracks and is wiggly what would be the best option? im wondering because i know in other balsa events people just bring extra wood and just pop it out but for boomilever you cant really take out the tension pieces. This is just an if scenario but im curious
Dan Holdgreve
Northmont Science Olympiad
Dedicated to the Memory of Len Joeris
"For the betterment of Science"
Northmont Science Olympiad
Dedicated to the Memory of Len Joeris
"For the betterment of Science"
- Cow481
- Member
- Posts: 158
- Joined: January 2nd, 2018, 6:18 pm
- Division: B
- State: PA
- Has thanked: 0
- Been thanked: 1 time
Re: Boomilever B/C
Also a reson why backup boomilevers are importantdholdgreve wrote:Boy, this is what I'd have to call a "Catastrophic Failure." If your tension rod goes on one side, I'm not even sure it could carry the 3kg to keep you in Tier 1. If it were broken at the competition I guess you'd have no choice but to patch as recommended by squaad... but if it happened before a competition, i'd be rebuilding from scratch.FermiGod wrote:out of curiosity, if a boomilever is built and ready to go but somehow the tension arm cracks and is wiggly what would be the best option? im wondering because i know in other balsa events people just bring extra wood and just pop it out but for boomilever you cant really take out the tension pieces. This is just an if scenario but im curious
Medals
Invitationals: 9
Regionals: 5
States: 1
Nationals: 1
National Medals
2018: 5th in Towers
2019: Could have gotten top 3 in Boomilevers and Gliders if my team made it
Invitationals: 9
Regionals: 5
States: 1
Nationals: 1
National Medals
2018: 5th in Towers
2019: Could have gotten top 3 in Boomilevers and Gliders if my team made it
-
- Member
- Posts: 288
- Joined: August 1st, 2017, 8:02 am
- Division: Grad
- State: IL
- Has thanked: 0
- Been thanked: 0
Re: Boomilever B/C
If you guys thought 3 minutes of sand loading is bad today at UChicago was 15 minutes for full load!
Deleted
- PM2017
- Member
- Posts: 524
- Joined: January 20th, 2017, 5:02 pm
- Division: Grad
- State: CA
- Has thanked: 23 times
- Been thanked: 13 times
Re: Boomilever B/C
Rip stick-holders' knees.DarthBuilder wrote:If you guys thought 3 minutes of sand loading is bad today at UChicago was 15 minutes for full load!
West High '19
UC Berkeley '23
Go Bears!
UC Berkeley '23
Go Bears!
- MadCow2357
- Exalted Member
- Posts: 774
- Joined: November 19th, 2017, 9:09 am
- Division: C
- State: RI
- Has thanked: 211 times
- Been thanked: 56 times
- Contact:
Re: Boomilever B/C
Yes big oof... Question: why didn't the Event Supervisors stop the teams from continuing to load?PM2017 wrote:Rip stick-holders' knees.DarthBuilder wrote:If you guys thought 3 minutes of sand loading is bad today at UChicago was 15 minutes for full load!
Last edited by MadCow2357 on January 12th, 2019, 7:49 pm, edited 1 time in total.
-
- Member
- Posts: 288
- Joined: August 1st, 2017, 8:02 am
- Division: Grad
- State: IL
- Has thanked: 0
- Been thanked: 0
Re: Boomilever B/C
While I was talking to the few supervisors during a time slot I believe it was the same reason as Centerville. They wanted to see how booms would last in a long period of time. So they removed the 6 minute rule but everything went smoothly and finished on time.MadCow2357 wrote:Yes big oof... Question: why didn't the Event Supervisors stopping the team from continuing to load?PM2017 wrote:Rip stick-holders' knees.DarthBuilder wrote:If you guys thought 3 minutes of sand loading is bad today at UChicago was 15 minutes for full load!
Deleted
Who is online
Users browsing this forum: No registered users and 1 guest