Hi,
Building an Arreaux with my son. Is there a guideline for how much of the coupler should extend into the main body tube. Half way? We do plan to fly it with a payload. Does that make a difference.
Thanks,
Christopher and Bob
The instructions (#5 on page 4) clearly say 2". That's about half-way.
No, it does not make a difference if you plan to fly it with a payload.
Yes half way. It can be off a little but shouldn't be off so much as to make leave the coupling in a state where it might wiggle around in flight. I'd keep it to withing a 1/4".
Phil Stein
Phil Stein
Well, it clearly makes a difference, if you consider anything near the extremes (say 5% or 95%, both of which are BAD). WHen I'm using a coupler as a coupler, I try for 50:50. When using it on a payload section I fudge it a bit towards the disconnect side: maybe 60:40. I figure that the glue makes up for the shorter length.
Bob Kaplow NAR # 18L TRA # "Impeach the TRA BoD" >>> To reply, remove the TRABoD!
It all depends on the payload, too. If you're needing an inch or so, try gluing the bulkhead to the bottom of the coupler, rather than in the middle as the instructions suggest.
Thanks everyone. The instructions that came with the kit did not have payload bay assembly! Your answers and the file on the Aerotech website solved it. Live and learn.
Bob M. I was missing that section of the plans from my Arreaux. We got pulled the missing sheet from the net. Ken
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