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  #41  
Old 11-30-2019, 02:07 PM
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Quote:
Originally Posted by BARGeezer
Just wondering how easy (or difficult) it is to light the Q-Jets in a cluster, since they are composite motors. I haven't tried it yet.


Itís a great question, the ones Iíve tried light really fast. I was able to light one with just bare nicrome because all the pyrogen was gone. I probably would use old q2g2 igniters which are low current
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  #42  
Old 11-30-2019, 10:58 PM
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I tested and with the bolt installed, a lot of air can still get through the center of
The mount. I soaked a bit of paper towel in glue and worked it into the space between the four tubes on the forward end, then covered it in wax paper and turned it over so it would dry flat. After a few hours I pulled the wax paper to let it finish drying.
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  #43  
Old 12-02-2019, 08:27 PM
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Today is the day to put the quad mount together, the mid ring was very loose on the fwd 29 mm tube so I glued a strip of card stock on that, fortunately was wide enough to get the fwd ring also. When that was dry the mid ring was glued to end of the tube and allowed to dry, then the fwd ring and spacers were glued on and fillets added. I then carefully marked where the quad tubes will mount to the mid ring. This is a butt joint although there is a lot of surface area, there is an opportunity to strengthen the mount with split bamboo glued in the valleys of the 18s, passing through to be glued inside of the 29mm fwd tube. This does double duty since it closes the remaining gaps. Each piece was glued and held in place while it dried, then filleted. Last, the centering ring for the quad 18ís goes on and is spaced two inches from the fwd ring with a spacer that was on the laser cut cooling fin and spacer set. Last shot is the complete mount with the cooling fins dry fit.
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Last edited by 5x7 : 12-03-2019 at 12:00 AM.
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  #44  
Old Yesterday, 06:08 AM
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Next up will be the interchangeable 29mm mount with integrated decorative cooling fins. I first scanned the parts in case I need to reproduce this in the future. Not in the scan is a 29mm tube and a motor block.
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Last edited by 5x7 : Yesterday at 04:42 PM.
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