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herbgh(at)nctc.com
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 Posted: Mon Sep 14, 2015 6:03 pm Post subject: Firefly Lift Struts |
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I built a set of new wings for my First Firefly...used 5" H sections as
is used on the Firestar...
Now I have a set of wings...built , covered and painted...and am
wondering if anyone has built single lift struts in place of the dual
ones? I have streamlined material to cover them with...
Thinking that a cro molly tube with the same fittings as the Firestar
would work for the fuselage end and some sort of "T" for the wing
end...That is...the lift strut would resemble a "T" with the lift strut
welded to a cross piece of cromolly...and a long bolt would go through
the tangs and the cross tube on the lift strut...
anyone ever seen this done? Wondering what size cro molly tube would
be required... ?
As to the Firefly..finally got some color on the wings...and next
and last is to add some color to the fuselage..ala the Factory Paint
job... Herb
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undoctor(at)rcn.com
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| Posted: Tue Sep 15, 2015 11:13 am Post subject: Firefly Lift Struts |
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Herb,
Don Gheridini built the FlagFly with single struts. The strut was
faired like the shape of a wing with inserts at each end. Of course the
lower was a single pin and the upper fit inside both wing receivers for
a total of 3 safety pins per wing. It was probably stronger than the
original and not only reduced the drag component due to half the struts,
but the shape of the strut as well. With the full windscreen and the
single struts, as well as extra polyester to form almost a full
enclosure, I would cruise at about 68 mph at 5400 RPMs. Attached is a
pic where you can see how it looked on each side.
Hope this helps.
Dave Kulp
Bethlehem, PA
On 9/14/2015 10:03 PM, Herb wrote:
| Quote: |
I built a set of new wings for my First Firefly...used 5" H sections
as is used on the Firestar...
Now I have a set of wings...built , covered and painted...and am
wondering if anyone has built single lift struts in place of the dual
ones? I have streamlined material to cover them with...
Thinking that a cro molly tube with the same fittings as the
Firestar would work for the fuselage end and some sort of "T" for the
wing end...That is...the lift strut would resemble a "T" with the
lift strut welded to a cross piece of cromolly...and a long bolt
would go through the tangs and the cross tube on the lift strut...
anyone ever seen this done? Wondering what size cro molly tube
would be required... ?
As to the Firefly..finally got some color on the wings...and next
and last is to add some color to the fuselage..ala the Factory Paint
job... Herb
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herbgh(at)nctc.com
Guest
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| Posted: Tue Sep 15, 2015 12:50 pm Post subject: Firefly Lift Struts |
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Very close to my idea...thanks....
I would use cro molly tubing with a streamlined pvc strut covering,
which I have ...The lower attach point would be the same as now..but
modified just a bit...to accept the single strut... or could use the
crushed tube per other Kolbs...
Should be as strong if not stronger...as you say...I do not see any
danger of twisting moments creating fatigue on the tangs...Herb
On 09/15/2015 02:01 PM, Dave Kulp wrote:
| Quote: | Herb,
Don Gheridini built the FlagFly with single struts. The strut was
faired like the shape of a wing with inserts at each end. Of course
the lower was a single pin and the upper fit inside both wing
receivers for a total of 3 safety pins per wing. It was probably
stronger than the original and not only reduced the drag component due
to half the struts, but the shape of the strut as well. With the full
windscreen and the single struts, as well as extra polyester to form
almost a full enclosure, I would cruise at about 68 mph at 5400 RPMs.
Attached is a pic where you can see how it looked on each side.
Hope this helps.
Dave Kulp
Bethlehem, PA
On 9/14/2015 10:03 PM, Herb wrote:
>
>
> I built a set of new wings for my First Firefly...used 5" H sections
> as is used on the Firestar...
>
> Now I have a set of wings...built , covered and painted...and am
> wondering if anyone has built single lift struts in place of the dual
> ones? I have streamlined material to cover them with...
>
> Thinking that a cro molly tube with the same fittings as the
> Firestar would work for the fuselage end and some sort of "T" for the
> wing end...That is...the lift strut would resemble a "T" with the
> lift strut welded to a cross piece of cromolly...and a long bolt
> would go through the tangs and the cross tube on the lift strut...
>
> anyone ever seen this done? Wondering what size cro molly tube
> would be required... ?
>
> As to the Firefly..finally got some color on the wings...and next
> and last is to add some color to the fuselage..ala the Factory Paint
> job... Herb
>
>
---
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| | - The Matronics Kolb-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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