Biggest Big Bertha

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NateLowrie

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Very nicely done. What's the height/weight and what are you flying it on?
 

wadavidson

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17' tall
Should be around 170 lbs.
N2000 and 4 x k535 dms or
N3300 redline (simplify and reduce risk)
 

wadavidson

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Ok, so the Bertha didn't go as well as planned. Looked good but central N did not light. Fortunately it didn't after it cleared the rail and I was able to light the N the next day at LDRS in the 8" Black Brant V.

Looks like I have a few more goonies to work on so stay tuned
ImageUploadedByRocketry Forum1496606076.418105.jpg
11.625 diameter flying pumpkin &
ImageUploadedByRocketry Forum1496606113.681568.jpg
11.625 diameter Estes swift
 

wadavidson

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Yeah,

That's a 12" diameter I built four years ago and have not finished. Used half inch ply for the fins and as of late have been using 3/4" or thicker with a phenolic lamination. Think I need to do a tip to tip glassing before it can be finished. Front fins as well in order to try and keep them on after landing.

It is scaled up from the PML bull dog kit and in fact PML kit all of the parts and made the cone

Best
Bill D.
 
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