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BenningtonCS / Telescope-2014

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Parts needed for dish mount #81

Closed wbuchanan28 closed 10 years ago

wbuchanan28 commented 10 years ago

Steel tube - 2" OD, 0.25" wall, 1.5 foot long Steel tube - 2.5" OD, 0.25" wall, 12 foot long Angle iron - 5 foot Steel plate - 0.25" thick, 1 foot x 1 foot (I think we have this in the metal shop) Brackets (http://www.homedepot.com/p/DuraVent-4-in-Pellet-Vent-Wall-Strap-Support-Bracket-3169/100194056), though corresponding to the size of the plate (we would want 1/2 the length of the plate)

@sandycurth am I forgetting anything? Also, are you able to get any information from John?

acencini commented 10 years ago

not to second-guess on the plate, but is 1x1 sufficient to spread the load/not become distorted under the weight/motion of the telescope?

i only say this as i have worked with a similar load-bearing steel plate setup with far larger weights, but a concrete base, and there are some general formulas that can be used to ensure the plate does not distort (I think .25" is pretty reasonable for thickness) but think we might benefit from a slightly larger footprint. if i am wrong and you've worked this out already, please ignore!

you guys are doing great. this is looking promising.

On Mon, Apr 7, 2014 at 9:03 PM, wbuchanan28 notifications@github.comwrote:

Steel tube - 2" OD, 0.25" wall, 1.5' long Steel tube - 2.5" OD, 0.25" wall, 12' long Angle iron - 5' Steel plate - 0.25" thick, 1'x1' (I think we have this in the metal shop)

@sandycurth https://github.com/sandycurth am I forgetting anything? Also, are you able to get any information from John?

Reply to this email directly or view it on GitHubhttps://github.com/BenningtonCS/Telescope-2014/issues/81 .

acencini commented 10 years ago

and i'm unable to read

1 foot x 1 foot sounds better :)

carry on

On Mon, Apr 7, 2014 at 9:09 PM, Andrew Cencini acencini@gmail.com wrote:

not to second-guess on the plate, but is 1x1 sufficient to spread the load/not become distorted under the weight/motion of the telescope?

i only say this as i have worked with a similar load-bearing steel plate setup with far larger weights, but a concrete base, and there are some general formulas that can be used to ensure the plate does not distort (I think .25" is pretty reasonable for thickness) but think we might benefit from a slightly larger footprint. if i am wrong and you've worked this out already, please ignore!

you guys are doing great. this is looking promising.

On Mon, Apr 7, 2014 at 9:03 PM, wbuchanan28 notifications@github.comwrote:

Steel tube - 2" OD, 0.25" wall, 1.5' long Steel tube - 2.5" OD, 0.25" wall, 12' long Angle iron - 5' Steel plate - 0.25" thick, 1'x1' (I think we have this in the metal shop)

@sandycurth https://github.com/sandycurth am I forgetting anything? Also, are you able to get any information from John?

Reply to this email directly or view it on GitHubhttps://github.com/BenningtonCS/Telescope-2014/issues/81 .

wbuchanan28 commented 10 years ago

We don't really have proof that this will work, we were just thinking that it would be enough with brackets against the structure as well. But this may not be enough, eh?

We could also do the idea you had of putting arms that extend out in front, attaching to two more plates to spread the weight more evenly, in which case we would need steel rods, more brackets, etc. We thought this may be a bit much, though.

acencini commented 10 years ago

are these settled now? if so, plz close or move to appropriate milestone

sandycurth commented 10 years ago

We need black weather resistant spray paint and two lengths of of 1/8" angle iron. I'm thinking one 6' and one 10'. I will talk to David Norman tomorrow. We acquired a base plate in the metal shop tonight and prepared it and the pipe for welding tomorrow. We will probably not be using the plastic bases that the roof contractors recommended. We determined that our set up is to heavy and we want a base that will really last, not a piece of plastic that will break down over time in the sun.

sandycurth commented 10 years ago

Have spray paint, and I got some angle iron from David that in going to clean up tonight and attach to the base to stiffen it. If anyone's free to help I'll be in the metal shop 10ish tonight.

wbuchanan28 commented 10 years ago

I'll be there

sandycurth commented 10 years ago

Whoever gets there first should take the long piece of rusty angle iron that is up against the back wall next to that 50 gallon drum and use the grinder with the steel brush head to clean it off. The cabinet with the grinder is unlocked. Be sure to turn on the ventilation.

sandycurth commented 10 years ago

The mount is finished and looks like it will work. If you've got some time tomorrow come by a paint it! There is spray paint right next to it in the metal shop. Take it outside though. David have us a primer to use first and then some black.

On Mon, Apr 28, 2014 at 7:23 PM, wbuchanan28 notifications@github.com wrote:

I'll be there

Reply to this email directly or view it on GitHub: https://github.com/BenningtonCS/Telescope-2014/issues/81#issuecomment-41626464

edaniszewski commented 10 years ago

Since it seems that we now have all of the parts that we needed for dish mount, I'll close the issue. Sweet dreams, #81