Balsa or Bass

yogoperson
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Re: Balsa or Bass

Post by yogoperson » December 6th, 2010, 9:26 pm

In my opinion, I'd stick to one type of wood. Mixing might earn you serious points and cost you even more.
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iYOA
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Re: Balsa or Bass

Post by iYOA » December 7th, 2010, 4:03 pm

Vizard007 wrote: Because if a tower breaks it will be harder to distinguish why it broke with balsa due to so many different variable.
i think that with a little experience, a little bit of attention to details such as the mass of the balsa sticks used and a slow motion video, it is pretty easy to distinguish why a balsa tower broke.

Consistency with balsa is also not tough once you build lots of towers. I think that after 15 towers, you should be fairly consistent.
West Windsor-Plainsboro High School South

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Re: Balsa or Bass

Post by Vizard007 » December 7th, 2010, 6:40 pm

iYOA wrote:
Vizard007 wrote: Because if a tower breaks it will be harder to distinguish why it broke with balsa due to so many different variable.
i think that with a little experience, a little bit of attention to details such as the mass of the balsa sticks used and a slow motion video, it is pretty easy to distinguish why a balsa tower broke.

Consistency with balsa is also not tough once you build lots of towers. I think that after 15 towers, you should be fairly consistent.
Yea, that sounds about right. Maybe a little low? But, I prefer not to use Balsa unless I personally hand pick every single piece and check the grain and weight and everything.
It's so easy, even a Badger could do it.

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Re: Balsa or Bass

Post by iYOA » December 8th, 2010, 4:20 pm

Vizard007 wrote: Yea, that sounds about right. Maybe a little low? But, I prefer not to use Balsa unless I personally hand pick every single piece and check the grain and weight and everything.
yep, what we do is mainly check the mass of each stick but now we can also start testing stiffness. I suppose the best way to improve consistency is to make lots of mistake, have many premature failures and learn from them. if your tower breaks because it is crooked or because the top part is a fraction of a mm too wide (causing the loading block to slip right through under higher loads), and you eliminate those errors in future towers, it will significantly improve consistency and hopefully you will notice noticeable improvements in efficiency( and it feels sooo good!).

I also cannot stress the importance of building constantly enough. we built about 2-3 towers a week for 1.5 months and we improved so much. we went from getting a 5 to a 17.6.
Last edited by iYOA on December 9th, 2010, 6:40 pm, edited 1 time in total.
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Re: Balsa or Bass

Post by bmbw123 » December 8th, 2010, 4:34 pm

Wow, 2-3 towers a week. I wish I was as dedicated as you haha :) . What I'm wondering is what wood densities you're using, because on the site I previously bought balsa wood from, the nice, light balsa wood that would be great for this event are all from $0.55 to about $1, and using 2-3 towers worth of wood per week seems like quite a bit of wood.

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Re: Balsa or Bass

Post by lllazar » December 8th, 2010, 5:04 pm

Ha, i wish i had time to build 2-3 towers a week, ill stick to my 1 for now....
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Re: Balsa or Bass

Post by iYOA » December 10th, 2010, 5:09 pm

what we do is split up the work and have one person specialize in making the top while the other specializes in the base. By now, we can each make our part in 2 hrs and it probably takes about 30 min to properly connect them. So, 2-3 towers a week is doable.

For the wood, we use the site balsawoodinc.com and i would say that the wood is pretty good. the first time we ordered, the 1/8^2 sticks were $0.17 and were 48in their weight varied anywhere from 2.4g to 3.5g, the 1/16^2 sticks were a similar price, same length and they averaged 0.7g to 0.9g. We were able to make 9g towers with these sticks so, they are not bad. for our second order however, the sticks were MUCH lighter; 1/8in sticks averaged to 1.4g and all the 1/16 in sticks averaged 0.5g and remember, these are 48in. on specializedbalsa, the equivalent sticks would cost around 85 cents and would be shorter in length.
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Re: Balsa or Bass

Post by lllazar » December 10th, 2010, 5:13 pm

Its much harder when your partner is lazy and doesn't know how to build sadly....

But thats interesting, i actually order sheets and strip them...i will check that site out though.
2011 Season Events~

Fossils (Regionals ~1st) (State ~6th)
Towers (Regionals ~1st) (State ~3rd)
Helicopter (Regionals -3rd gahhh) (State ~5th)
Wind Power (Regionals ~1st) (State ~3rd TIERED!)

Hooray for getting everything i wanted?

yogoperson
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Re: Balsa or Bass

Post by yogoperson » December 10th, 2010, 7:09 pm

Well, actually if you know how to use the balsa it'll work as good, if not better, than bass.
Are you going to Scarborough Fair?
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Re: Balsa or Bass

Post by GeekyGem » December 16th, 2010, 1:34 pm

Where do we get the material like Balsa Wood and Glue for the construction ? I live in San Diego.

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