Centuri Magnum Jayhawk

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tony66

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I want to build a clone of the old Centuri Magnum Jayhawk. I downloaded the plan sheet from YORP, but unlike Estes, Centuri directions don't give a parts list with part numbers. I want to order the authentic parts from Semroc, but I need to know what nose cone, what main body tube, and how long it needs to be. Can anyone help?
Tony
 

MarkM

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Have you considered the MadCow Jayhawk? I'm just finishing mine...great, quality kit and can fly on E-G motors. Balsa NC and tailcone (no need to deal with making a wrap for the tailcone).

I was going to clone the Jayhawk a while back, then decided the Madcow kit was a much better alternative.
 

tony66

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That's a nice kit, but a little pricey for me. One of the reasons why I like to clone is that I can get the parts I need much more cheaply than buying the whole kit complete, even whole reproduction kits from Semroc. Of course the only things I can't clone have custom plastic parts, but there are still options available if you look hard enough.
 

bnnola

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Howdy folks. I am preparing to clone a Magnum Jayhawk. Does anyone out there have a parts list they can share? The Semoc link posted above no longer works. Alternatively, maybe someone has a working link via the mystical, magical Wayback Machine? Thanks much.
 

bnnola

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I realize I should have been a bit more specific… I have the parts list from the instructions/plans. I am trying to ensure I select the correct body tubes for the stuffer and flare tubes.
 

kuririn

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Stuffer tube is BT-50KE, 15"
Flare tube is ST-7180, 18", cut in half lengthwise.
Magnum Jayhawk Model Rocket Classic Kit by Centuri (Kit# ) (archive.org)
BT-50KE showing in stock but the ST-7180 is out at erockets.
You can sub an 18" BT-20 tube, the BC-715 nose cone will fit it.
I have the parts bagged in a box somewhere but it's way down the build queue.
Have fun.
 

bnnola

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Many thanks! That is all I needed to get going. My “calibrated” eyeball estimated the flare tube was an 18” BT-20 when I took a look at a parts photo for a kit on ebay, but I suspected it was an old Centuri tube when I couldn’t find any info when referencing the original part number for the tube. Also, after printing some of the templates, like the tube cut-out for the flare nose cone, the cut seemed ever so slightly large for a BT-20. So yes, ST-7. I’ll sub a BT-20 if necessary.

Thanks again!
 
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