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by S4BB
February 10th, 2019, 6:38 am
Forum: Boomilever B/C
Topic: Base failures
Replies: 27
Views: 2006

Re: Base failures

How would you slot your tension members through the base? How would you put holes through the base? And what size base are you using for this (as I can imagine my 1/2 by 3/32 basswood is too thin for this method. Also, how do you increase surface area with this method? https://i.imgur.com/d7PEe8T.j...
by S4BB
February 5th, 2019, 11:26 am
Forum: Boomilever B/C
Topic: Base failures
Replies: 27
Views: 2006

Re: Base failures

We had success with 1/16 x 3/32 Bass tension members, holding full load.
by S4BB
January 2nd, 2019, 9:13 am
Forum: Boomilever B/C
Topic: Configurations of the Boomilever
Replies: 14
Views: 2130

Re: Configurations of the Boomilever

The Center Bass piece is facing the other direction, the two Balsa cap pieces went the opposite direction to the Bass piece.
by S4BB
January 1st, 2019, 6:43 pm
Forum: Boomilever B/C
Topic: Configurations of the Boomilever
Replies: 14
Views: 2130

Re: Configurations of the Boomilever

https://i.imgur.com/d7PEe8T.jpg The piece of wood is angled so that the tension members end up at the width of the boom at the end they are glued to. Bass core is 3/32 thick with 1/32 thick pieces of Balsa to cover the tension members top and bottom. Tension members are on the outside of the compre...
by S4BB
January 1st, 2019, 6:01 am
Forum: Boomilever B/C
Topic: Configurations of the Boomilever
Replies: 14
Views: 2130

Re: Configurations of the Boomilever

The loading block was at 45cm from the wall. The basic structure was 2cm square, and the tension members only attach in the lower right corners of the image (a few pieces of wood are missing from this image, broke during testing). The glue joint is not on the center line of the loading block, slight...
by S4BB
December 29th, 2018, 5:30 pm
Forum: Boomilever B/C
Topic: Configurations of the Boomilever
Replies: 14
Views: 2130

Re: Configurations of the Boomilever

Image
by S4BB
December 13th, 2018, 7:25 pm
Forum: Boomilever B/C
Topic: Boomilever B/C
Replies: 345
Views: 25371

Re: Boomilever B/C

Just as a reference, the last time this event was run, our boom used 4 main compression members that were 1/8 x 1/8, with each being @ .7g a piece.
by S4BB
March 11th, 2018, 6:17 am
Forum: Towers B/C
Topic: PICTURES, SCORES, VIDEOS!!!
Replies: 119
Views: 15574

Re: PICTURES, SCORES, VIDEOS!!!

We competed yesterday at the CLC Regional in Illinois, Division B with three teams. Varsity scored 2785, JV G 2771 and JV B 2540. All are non-bonus and had variation in the bracing in the V vs JV in the chimney portion of the tower. Time for refinement to get ready for states. Team did a great job.
by S4BB
March 11th, 2018, 6:11 am
Forum: Towers B/C
Topic: Towers B/C
Replies: 524
Views: 56686

Re: Towers B/C

We are also using 3D printed parts to hold the legs in place while we glue the cross bracing on. We did design 'gaps' in the parts where we would be glueing the bracing, trying to avoid any potential issue with glue. The first tower we went to take off seemed stuck, and we ended up using our cutting...
by S4BB
August 24th, 2017, 6:49 pm
Forum: Towers B/C
Topic: Frame Design Software
Replies: 8
Views: 3443

Re: Frame Design Software

For the 2D version, yes you sign up and it let's you save up to 10 files. The 3D version the last time I checked still did not allow you to save anything.
by S4BB
May 7th, 2017, 6:45 pm
Forum: Towers B/C
Topic: Towers B/C
Replies: 745
Views: 83974

Re: Towers B/C

After we strip the wood, we weigh and then mark each piece by density, using highlighters, your seeing the yellow highlighter.
by S4BB
May 7th, 2017, 1:01 pm
Forum: Towers B/C
Topic: Towers B/C
Replies: 745
Views: 83974

Re: Towers B/C

Cleaning up after the season, and pulled together all the jig we created. There are so many because we had three teams in B this season and I helped with a C team.
Image
by S4BB
May 7th, 2017, 12:51 pm
Forum: Towers B/C
Topic: Towers B/C
Replies: 745
Views: 83974

Re: Towers B/C

Cleaning up after the season, and pulled together all the jig we created. There are so many because we had three teams in B this season and I helped with a C team.
Image

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