Definitely appreciate it, if by some miracle I do I will send you a couple six packs of your choosing [emoji869]Awesome! ABS should work great too. I just updated my Thingiverse page with a link to the Aluminum angle extrusion I used for the support structure. I also added my 24mm tower here:
Let it be known that if you break any of my altitude records using my launch tower design, you owe me a beer.
Here's the 24mm tower in action:
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Haha, sounds great. I'd rather meet up for a multi-day launch and celebrate your record over a few drinks though.Definitely appreciate it, if by some miracle I do I will send you a couple six packs of your choosing [emoji869]
You're welcome. I hope it works great for her Aspire.Thanks!
The plan is to use it for my daughter's Apogee Aspire. I'll print it this weekend and report back to tell you how it works.
Some of this tapes should help:Has anyone added something to the inside of the rails to reduce scraping on the rocket?
Hi Chris, I’m just seeing your post now, and the link shows the freakin’ AWSOME tower you engineered and built as unavailable. Is it something you would make again? I hope so.I designed my tower systems to handle 3 or 4 fins, 29mm - 5" OD. It can be reconfigured in about 15 minutes. It uses 3/16" steel rings and 1" EMT conduit for the rails. I changed the design to use a solid 3/16" steel base plate instead of the ring pictured here. It isn't cheap, but it's probably the easiest to configure tower of any on the market.
Dave, is “friction” measured in ‘thousandths’ or do you stick your tongue out and tilt your head? What do YOU prefer as ‘proper clearance’? No criticism, just asking. Someone mentioned using felt, is that a bad idea? Granted that you’ll have to change them as they get scorchedHi, Ralf !
The tension on the screws is pre-adjusted by the Rocketeer. Usually, the friction is sufficient and no re-adjustment is needed.
Dave, is “friction” measured in ‘thousandths’ or do you stick your tongue out and tilt your head? What do YOU prefer as ‘proper clearance’? No criticism, just asking. Someone mentioned using felt, is that a bad idea? Granted that you’ll have to change them as they get scorched
"Sufficient friction" is determined when the rocket does not cause the rails to move and the Rocketeer must apply significant force to them to readjust their spacing. On some tower designs, the supports are not kept in position by Friction, at all.Dave please send me the LT information you have also. Thanks!
I did that all, myself, using common hand tools.My, that's some pretty machining work. Are those fine-thread screws and turnbuckles? Who did those fancy green rings?
Sent you an email Dave. I am VERY interested in purchasing the 4 halos you have. Please advise. Thanks!I did that all, myself, using common hand tools.
12" diameter PVC / 3/4" thick walls . . . ( I have 4 more, if anybody is interested - See Pic )
Rings were "sliced", by hand, using a Hack Saw ( about 30 minutes per cut / 1 hour per ring ) . . . An "arm buster" !
The Lightening holes were done, using a 2 1/2" Doorknob Hole Saw on a 3/8" Electric Drill.
Alignment / Support Bars :
1" square aluminum tubing. Double through-bolted to each ring, for rigidity.
1/2" Aluminum U-Channel, with Brass "Hurricane / Storm Shutter mounting insert, screwed into the channel and braced with epoxy.
L-O-N-G 1/4" bolts, with Long Hex Nuts and a Wing Nut to lock-in final adjustment.
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