Let's see your launch towers!

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Yep, no problems. I've flown up to J1026s off a similar tower with zero problems using PETG printed parts.

Have you ever flown any rockets with a low thrust / weight ratio, say 3:1 or 4:1, where the tower would be subjected to the heat for a longer time ?

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Dave F.
 
Have you ever flown any rockets with a low thrust / weight ratio, say 3:1 or 4:1, where the tower would be subjected to the heat for a longer time ?
I don't fly anything under about 10:1, so I don't have data on that. 3:1 seems really low though. Scary low. YMMV, but I wouldn't expect any problems aside from some black soot on the lower bracket.
 
Has anybody ever cloned one of the trussed towers like in Stine's book? Those looked so awesome that I really want to build one but I realize it would be a lot of work.
 
Has anybody ever cloned one of the trussed towers like in Stine's book? Those looked so awesome that I really want to build one but I realize it would be a lot of work.

This info may be helpful . . . ( several posts coming )

Dave F.
 

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More information . . .

Dave F.
 

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Last Batch . . . ENJOY !

Dave F.
 

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Just finished my first tower build today. It's adjustable for 24mm to 54mm, might fit a 3" in there too if the fins aren't too large. All for under $150. Some of our local clubs don't even have one so I took it upon myself to make one that many people can use.
 

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This was an ad in one of my old HP magazines (yes, I need more magazines if you have any to get rid of). Great looking, quality built.
G3yAFtt.jpg
 
Resurrecting this thread to show my attempt to build @GrouchoDuke’s design.
This is for my Wildman Blackhawk 38 minimum diameter rocket.
Printed using PETG. I modified the original design slightly and added a base at the bottom for the rocket to sit on.
IMG_4390.jpeg
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I still need to sand the poles. Probably use a teflon spray or tape.

I don’t have a 1010 rail to confirm it’ll fit. Hoping to use the clubs launch rails.

Will plan on a July launch.
 
Resurrecting this thread to show my attempt to build @GrouchoDuke’s design.
This is for my Wildman Blackhawk 38 minimum diameter rocket.
Printed using PETG. I modified the original design slightly and added a base at the bottom for the rocket to sit on.
View attachment 651628
View attachment 651629
View attachment 651630

I still need to sand the poles. Probably use a teflon spray or tape.

I don’t have a 1010 rail to confirm it’ll fit. Hoping to use the clubs launch rails.

Will plan on a July launch.

Nice. What is the purpose of the pins on the top piece going into the top of each conduit?
 
tower - 3.jpegtower - 2.jpeg

Perhaps the ultimate model rocket launch tower:
  • Single hand crank under the base sets the spacing of all three rails simultaneously, adjusts in seconds
  • 4' long rails, 1/4" thick with recesses for thin (yet structurally stiff) sheet metal links, for maximum fin allowance
  • Rocket size:
    • 3-finned rockets 1/2" to 5" in diameter
    • 4-finned rockets 1 1/2" to 5" in diameter
    • Fin span up to 12"
  • Legs removable for transport
Construction:
  • CNC milled aluminum base, rail link recesses, and bracing
  • Milled aluminum frame parts
  • Punched and bent sheet steel links, nickel-plated
  • Lathed low-profile stainless steel pivots
If anyone wants to build one like this for yourself, I can advise on the mechanism and design. Or if a manufacturer might be interested in my consulting on designing a similar tower to offer as a product, hit me up.
 
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View attachment 651708View attachment 651709

Perhaps the ultimate model rocket launch tower:
  • Single hand crank under the base sets the spacing of all three rails simultaneously, adjusts in seconds
  • 4' long rails, 1/4" thick with recesses for thin (yet structurally stiff) sheet metal links, for maximum fin allowance
  • Rocket size:
    • 3-finned rockets 1/2" to 5" in diameter
    • 4-finned rockets 1 1/2" to 5" in diameter
    • Fin span up to 12"
  • Legs removable for transport
Construction:
  • CNC milled aluminum base, rail link recesses, and bracing
  • Milled aluminum frame parts
  • Punched and bent sheet steel links, nickel-plated
  • Lathed low-profile stainless steel pivots
If anyone wants to build one like this for yourself, I can advise on the mechanism and design. Or if a manufacturer might be interested in my consulting on designing a similar tower to offer as a product, hit me up.

Looks like the original Gold Medal competition Tower* was an inspiration to make all the new wonderful features :)

* I have one of the last ones of those I got from Bill at BMS. I need to get it out of my storage shed and clean it up as soon as this heat wave moves on. I have a 24mm Carbon fiber rocket to fly that has no buttons or lug.
 
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