[roc-chat] Re: G10 fin thickness question?
- From: Kenneth Brown <ken@xxxxxxxxxxxxx>
- To: roc-chat@xxxxxxxxxxxxx
- Date: Wed, 25 Apr 2012 19:45:55 -0700
It's more a question of what velocity you are expecting. 1/8" G10 fins on a 4"
Goblin with a K1100 (54mm) isn't going to fare very well. Mine didn't and it
had the stock birch ply fins.
If you plan to fly slow, use the 1/8". I would go with the 3/16" myself. You
can always find a use for the 1/8" stock later.
Ken (AKA, AG6LD) Brown
Got my call sign. Amateur Extra on my first try.
On Apr 25, 2012, at 5:48 PM, John Howard wrote:
> I’m building a scratch dual deploy 4” G10 3FNC rocket, and was planning on
> using 54mm motors. If I used a 75mm MM then I could launch my first L motor
> up at XPRS in September (and 54mm’s with an adapter). I will be doing slots
> through the airframe with reinforced filets inside and out and I already have
> 1/8” G10. Most kits online look like they use 1/8” G10 for 54mm kits, and
> 3/16” G10 for 75mm/98mm kits.
>
> Am I asking for trouble if I use 1/8” G10 fins with a 75mm motor like a
> Ceseroni L800 or Aerotech L850W? In ROCSIM both look like rocket would be
> above 1100 ft/sec for about 2.5 seconds ? Or should I just stick with the
> 54mm??
>
> Any input would be appreciated!!
>
> Thanks,
> John
>
> Sent from my old iPhone
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