Original Posted By: Ted Brousseau
SteveMohawk, Avid, Kitfox, Prospector all use plywood ribs with cap strips.Mohawk has a 1" wide cap strip and the spars are 2 1/2" alum tubing withcapstrip glued right over it connecting to aileron section. Not sure justwhat the Kitfox has for sure.Gordonvistin(at)juno.com wrote:> I got my copy of Kitpalnes today and while reading the article I noticed> the Piet written about used solid plywood ribs. Is this possible?? I am> interested in this as I did build a Stewart headwind using the same type> rib construction.> If so should I use a cap strip??>> Steve________________________________________________________________________________
Pietenpol-List: Plywood ribs.
Pietenpol-List: Plywood ribs.
Original Posted By: "Craig L.Hanson"
I got my copy of Kitpalnes today and while reading the article I noticedthe Piet written about used solid plywood ribs. Is this possible?? I aminterested in this as I did build a Stewart headwind using the same typerib construction.If so should I use a cap strip??Steve________________________________________________________________________________
I got my copy of Kitpalnes today and while reading the article I noticedthe Piet written about used solid plywood ribs. Is this possible?? I aminterested in this as I did build a Stewart headwind using the same typerib construction.If so should I use a cap strip??Steve________________________________________________________________________________
Pietenpol-List: Re: Plywood ribs.
Original Posted By:> vistin(at)juno.com
Steve - How did you like the Headwind? I used to have a set of plans and always liked the design - did you use a VW engine? I see that Replicraft is now offering plans again.......Thanks, Clay
Steve - How did you like the Headwind? I used to have a set of plans and always liked the design - did you use a VW engine? I see that Replicraft is now offering plans again.......Thanks, Clay
Pietenpol-List: Re: Plywood ribs.
Original Posted By: Gordon Brimhall
Subject: Pietenpol-List: Re: Plywood ribs.>I don't know about the Piet, but I did the same change on my Christavia. I>used 1/4" mahogany ply and cut lightening holes. I didn't use capstrips,>but if I had my time back, I would have. The ribs will easily bow between>the spars without them.>>As I'm not fully familiar with the piet, I don't know if it has>compression struts (although I suspect they probably do). If not, the>strength of the rib becomes an even greater concern. The old Auster was>built without dedicated compression struts. Instead, four or five of the>ribs were built from approx 3/8" 4130 steel square tubes in a trus style.>They did tripple duty as compression strut, wing rib and fuel tank mount.>Quite an ingenious design. Anyway, this is one plane where substituting in>ply ribs would cause some definite weakening of the wing
>>BTW, It was neat to see SteveE's plane in the completitions section of>that same magazine. Way to go.>>Ken>>On Wed, 18 Aug 1999 vistin(at)juno.com wrote:>>> I got my copy of Kitpalnes today and while reading the article I noticed>> the Piet written about used solid plywood ribs. Is this possible?? I am>> interested in this as I did build a Stewart headwind using the same type>> rib construction.>> If so should I use a cap strip??>>>> Steve>>>>Ken Beanlands B.Eng (Aerospace)>Calgary, Alberta, Canada>Christavia MK 1 C-GREN>>>________________________________________________________________________________
Subject: Pietenpol-List: Re: Plywood ribs.>I don't know about the Piet, but I did the same change on my Christavia. I>used 1/4" mahogany ply and cut lightening holes. I didn't use capstrips,>but if I had my time back, I would have. The ribs will easily bow between>the spars without them.>>As I'm not fully familiar with the piet, I don't know if it has>compression struts (although I suspect they probably do). If not, the>strength of the rib becomes an even greater concern. The old Auster was>built without dedicated compression struts. Instead, four or five of the>ribs were built from approx 3/8" 4130 steel square tubes in a trus style.>They did tripple duty as compression strut, wing rib and fuel tank mount.>Quite an ingenious design. Anyway, this is one plane where substituting in>ply ribs would cause some definite weakening of the wing
>>BTW, It was neat to see SteveE's plane in the completitions section of>that same magazine. Way to go.>>Ken>>On Wed, 18 Aug 1999 vistin(at)juno.com wrote:>>> I got my copy of Kitpalnes today and while reading the article I noticed>> the Piet written about used solid plywood ribs. Is this possible?? I am>> interested in this as I did build a Stewart headwind using the same type>> rib construction.>> If so should I use a cap strip??>>>> Steve>>>>Ken Beanlands B.Eng (Aerospace)>Calgary, Alberta, Canada>Christavia MK 1 C-GREN>>>________________________________________________________________________________Pietenpol-List: Re: Plywood ribs.
Original Posted By: mbell1(at)columbiaenergygroup.com
I don't know about the Piet, but I did the same change on my Christavia. Iused 1/4" mahogany ply and cut lightening holes. I didn't use capstrips,but if I had my time back, I would have. The ribs will easily bow betweenthe spars without them. As I'm not fully familiar with the piet, I don't know if it hascompression struts (although I suspect they probably do). If not, thestrength of the rib becomes an even greater concern. The old Auster wasbuilt without dedicated compression struts. Instead, four or five of theribs were built from approx 3/8" 4130 steel square tubes in a trus style.They did tripple duty as compression strut, wing rib and fuel tank mount.Quite an ingenious design. Anyway, this is one plane where substituting inply ribs would cause some definite weakening of the wing ;-)BTW, It was neat to see SteveE's plane in the completitions section ofthat same magazine. Way to go.KenOn Wed, 18 Aug 1999 vistin(at)juno.com wrote:> I got my copy of Kitpalnes today and while reading the article I noticed> the Piet written about used solid plywood ribs. Is this possible?? I am> interested in this as I did build a Stewart headwind using the same type> rib construction.> If so should I use a cap strip??> > Steve> Ken Beanlands B.Eng (Aerospace)Calgary, Alberta, CanadaChristavia MK 1 C-GREN________________________________________________________________________________
I don't know about the Piet, but I did the same change on my Christavia. Iused 1/4" mahogany ply and cut lightening holes. I didn't use capstrips,but if I had my time back, I would have. The ribs will easily bow betweenthe spars without them. As I'm not fully familiar with the piet, I don't know if it hascompression struts (although I suspect they probably do). If not, thestrength of the rib becomes an even greater concern. The old Auster wasbuilt without dedicated compression struts. Instead, four or five of theribs were built from approx 3/8" 4130 steel square tubes in a trus style.They did tripple duty as compression strut, wing rib and fuel tank mount.Quite an ingenious design. Anyway, this is one plane where substituting inply ribs would cause some definite weakening of the wing ;-)BTW, It was neat to see SteveE's plane in the completitions section ofthat same magazine. Way to go.KenOn Wed, 18 Aug 1999 vistin(at)juno.com wrote:> I got my copy of Kitpalnes today and while reading the article I noticed> the Piet written about used solid plywood ribs. Is this possible?? I am> interested in this as I did build a Stewart headwind using the same type> rib construction.> If so should I use a cap strip??> > Steve> Ken Beanlands B.Eng (Aerospace)Calgary, Alberta, CanadaChristavia MK 1 C-GREN________________________________________________________________________________
Pietenpol-List: Re: Plywood ribs.
Original Posted By: Ken Beanlands
My Flybaby biplane had 1/16" plywood ribs with 1/4" x 1/2" capstrips ROUTEDlengthwise to accept the ribs. VERY strong and light. It was difficult tokeep the same airfoil shape, one rib to another due to the variations in therouting. Very light, very strong. End ribs had extra verticles glued on forfabric tension..........4130 tube compression tubes as well.Earl Myers-----Original Message-----
My Flybaby biplane had 1/16" plywood ribs with 1/4" x 1/2" capstrips ROUTEDlengthwise to accept the ribs. VERY strong and light. It was difficult tokeep the same airfoil shape, one rib to another due to the variations in therouting. Very light, very strong. End ribs had extra verticles glued on forfabric tension..........4130 tube compression tubes as well.Earl Myers-----Original Message-----
Pietenpol-List: Re: Plywood ribs.
Original Posted By: nle97(at)juno.com
Steve,While plywood ribs are quicker to make, they are also heavier. This iswhy so many planes use built up ribs.John Langston writes:>Steve>>Mohawk, Avid, Kitfox, Prospector all use plywood ribs with cap >strips.>Mohawk has a 1" wide cap strip and the spars are 2 1/2" alum tubing >with>capstrip glued right over it connecting to aileron section. Not sure >just>what the Kitfox has for sure.>>Gordon>>>vistin(at)juno.com wrote:>>> I got my copy of Kitpalnes today and while reading the article I >noticed>> the Piet written about used solid plywood ribs. Is this possible?? I >am>> interested in this as I did build a Stewart headwind using the same >type>> rib construction.>> If so should I use a cap strip??>>>> Steve>__________________________________________________________________________________________
Steve,While plywood ribs are quicker to make, they are also heavier. This iswhy so many planes use built up ribs.John Langston writes:>Steve>>Mohawk, Avid, Kitfox, Prospector all use plywood ribs with cap >strips.>Mohawk has a 1" wide cap strip and the spars are 2 1/2" alum tubing >with>capstrip glued right over it connecting to aileron section. Not sure >just>what the Kitfox has for sure.>>Gordon>>>vistin(at)juno.com wrote:>>> I got my copy of Kitpalnes today and while reading the article I >noticed>> the Piet written about used solid plywood ribs. Is this possible?? I >am>> interested in this as I did build a Stewart headwind using the same >type>> rib construction.>> If so should I use a cap strip??>>>> Steve>__________________________________________________________________________________________