---------------------------------------------------------- Pietenpol-List Digest Archive --- Total Messages Posted Thu 09/14/17: 7 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 11:25 AM - Re: Cont. 0200 prop pitch (pjb) 2. 12:54 PM - Re: Re: Cont. 0200 prop pitch (Marcus Zechini) 3. 01:22 PM - Re: Re: Cont. 0200 prop pitch (Paul Waterhouse) 4. 02:01 PM - Re: Re: Cont. 0200 prop pitch (L. Harris) 5. 03:53 PM - Re: Cont. 0200 prop pitch (TriScout) 6. 06:23 PM - Re: Re: Cont. 0200 prop pitch (shad bell) 7. 09:25 PM - Re: Cont. 0200 prop pitch (taildrags) ________________________________ Message 1 _____________________________________ Time: 11:25:37 AM PST US Subject: Pietenpol-List: Re: Cont. 0200 prop pitch From: "pjb" pjb wrote: > I recently replaced the Continental A75 on my Pietenpol with > an 0200-A. > We used the Cloudcars 74-38 that was on the A75 after counterboring > the holes to fit the 0200-A. > > It looks large in the photo but there is 9" clearance !! > > > Full throttle static rpm was 2500 and the first 2 test flights showed > normal operating rpms . > > Patricia I spoke too soon !! We have flown about 7 hours since installing the 0 SMOH 0-200A engine on my Pietenpol so I now have a better idea of the performance as the engine 'loosens up' The 74-38 prop is way too fine a pitch and the engine needs to be throttled back to prevent overspeeding. The result is that we're not able to use the full power of the engine and we're not getting either good climb or good cruise. A few days ago, I tried a borrowed 72-40 prop and it was considerably better [ did not overspeed on climb out but did overspeed in cruise. I think we still need a slightly coarser pitch and will be trying out another borrowed prop this week. When I have a good idea of the numbers, I will buy one. I still want a wood prop. Has anyone had a similar experience matching a wood prop to the 0-200A engine on a Piet ? Patricia Read this topic online here: http://forums.matronics.com/viewtopic.php?p=472878#472878 ________________________________ Message 2 _____________________________________ Time: 12:54:00 PM PST US From: Marcus Zechini Subject: Re: Pietenpol-List: Re: Cont. 0200 prop pitch I have a McCauley metal 74x41 on a C-85 on my GN-1. 2450 rpm climb out and level cruise. Would like wood but fear I need the metal for CG reasons. This prop was also on the A65 this plane was built with. I want to experiment before buying or re-pitching. I think I can get a few more knots (not important), and maybe a little better fuel burn. So far only borrowed a 74x47. Way too much pitch. Will be interested in your research! On Thu, Sep 14, 2017 at 2:27 PM pjb wrote: > > > pjb wrote: > > I recently replaced the Continental A75 on my Pietenpol with > > an 0200-A. > > We used the Cloudcars 74-38 that was on the A75 after counterboring > > the holes to fit the 0200-A. > > > > It looks large in the photo but there is 9" clearance !! > > > > > > Full throttle static rpm was 2500 and the first 2 test flights showed > > normal operating rpms . > > > > Patricia > > > I spoke too soon !! > We have flown about 7 hours since installing the 0 SMOH 0-200A engine > on my Pietenpol so I now have a better idea of the performance as the > engine 'loosens up' > The 74-38 prop is way too fine a pitch and the engine needs to be > throttled back to prevent overspeeding. The result is that we're not able > to use the > full power of the engine and we're not getting either good climb or good > cruise. > > A few days ago, I tried a borrowed 72-40 prop and it was considerably > better [ did not overspeed on climb out but did overspeed in cruise. > I think we still need a slightly coarser pitch and will be trying out > another borrowed prop this week. > > When I have a good idea of the numbers, I will buy one. I still want a wood > prop. > Has anyone had a similar experience matching a wood prop to the 0-200A > engine on a Piet ? > > Patricia > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=472878#472878 > > ________________________________ Message 3 _____________________________________ Time: 01:22:47 PM PST US From: Paul Waterhouse Subject: Re: Pietenpol-List: Re: Cont. 0200 prop pitch Hi Guys, Try talking to Gary at APS props in NZ. He makes very nice wo oden props & sends them all over the world. I have one under the bed waiting for me to finish the aeroplane. Sent from my iPhone > On 15/09/2017, at 7:52 AM, Marcus Zechini wrote : > > I have a McCauley metal 74x41 on a C-85 on my GN-1. 2450 rpm climb out and level cruise. Would like wood but fear I need the metal for CG reasons. Thi s prop was also on the A65 this plane was built with. I want to experiment b efore buying or re-pitching. I think I can get a few more knots (not importa nt), and maybe a little better fuel burn. So far only borrowed a 74x47. Wa y too much pitch. Will be interested in your research! > >> On Thu, Sep 14, 2017 at 2:27 PM pjb wrote: >> >> >> pjb wrote: >> > I recently replaced the Continental A75 on my Pietenpol with >> > an 0200-A. >> > We used the Cloudcars 74-38 that was on the A75 after counterboring >> > the holes to fit the 0200-A. >> > >> > It looks large in the photo but there is 9" clearance !! >> > >> > >> > Full throttle static rpm was 2500 and the first 2 test flights showed >> > normal operating rpms . >> > >> > Patricia >> >> >> I spoke too soon !! >> We have flown about 7 hours since installing the 0 SMOH 0-200A engine >> on my Pietenpol so I now have a better idea of the performance as the >> engine 'loosens up' >> The 74-38 prop is way too fine a pitch and the engine needs to be throttl ed back to prevent overspeeding. The result is that we're not able to use th e >> full power of the engine and we're not getting either good climb or good >> cruise. >> >> A few days ago, I tried a borrowed 72-40 prop and it was considerably >> better [ did not overspeed on climb out but did overspeed in cruise. >> I think we still need a slightly coarser pitch and will be trying out >> another borrowed prop this week. >> >> When I have a good idea of the numbers, I will buy one. I still want a wo od >> prop. >> Has anyone had a similar experience matching a wood prop to the 0-200A >> engine on a Piet ? >> >> Patricia >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=472878#472878 >> >> >> >> >> >> >> ========== >> br> enpol-List" rel="noreferrer" target="_blank">http://www.matronics .com/Navigator?Pietenpol-List >> ========== >> FORUMS - >> eferrer" target="_blank">http://forums.matronics.com >> ========== >> WIKI - >> errer" target="_blank">http://wiki.matronics.com >> ========== >> b Site - >> -Matt Dralle, List Admin. >> rel="noreferrer" target="_blank">http://www.matronics.com/contributio n >> ========== >> >> >> ________________________________ Message 4 _____________________________________ Time: 02:01:26 PM PST US From: "L. Harris" Subject: Re: Pietenpol-List: Re: Cont. 0200 prop pitch Just a data point for you: 100hp at 2750rpm, 95 mph - arithmetic says you s hould have a 66/42 prop. Lorenzo ________________________________ From: owner-pietenpol-list-server@matronics.com on behalf of pjb Sent: Thursday, September 14, 2017 2:25 PM Subject: Pietenpol-List: Re: Cont. 0200 prop pitch pjb wrote: > I recently replaced the Continental A75 on my Pietenpol with > an 0200-A. > We used the Cloudcars 74-38 that was on the A75 after counterboring > the holes to fit the 0200-A. > > It looks large in the photo but there is 9" clearance !! > > > Full throttle static rpm was 2500 and the first 2 test flights showed > normal operating rpms . > > Patricia I spoke too soon !! We have flown about 7 hours since installing the 0 SMOH 0-200A engine on my Pietenpol so I now have a better idea of the performance as the engine 'loosens up' The 74-38 prop is way too fine a pitch and the engine needs to be throttled back to prevent overspeeding. The result is that we're not able to use the full power of the engine and we're not getting either good climb or good cruise. A few days ago, I tried a borrowed 72-40 prop and it was considerably better [ did not overspeed on climb out but did overspeed in cruise. I think we still need a slightly coarser pitch and will be trying out another borrowed prop this week. When I have a good idea of the numbers, I will buy one. I still want a wood prop. Has anyone had a similar experience matching a wood prop to the 0-200A engine on a Piet ? Patricia Read this topic online here: https://nam03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fforums.m atronics.com%2Fviewtopic.php%3Fp%3D472878%23472878&data=02%7C01%7Cragingn sweet%40msn.com%7C99051ea905604397a75808d4fb9e6a0b%7C84df9e7fe9f640afb435aa aaaaaaaaaa%7C1%7C0%7C636410105176167085&sdata=CznEedosqHsuwAu5qLZ8BkqftlD 6qtMXPkgmMU3k8EE%3D&reserved=0 F%2Fwww.matronics.com%2FNavigator%3FPietenpol-List&data=02%7C01%7Cragingn sweet%40msn.com%7C99051ea905604397a75808d4fb9e6a0b%7C84df9e7fe9f640afb435aa aaaaaaaaaa%7C1%7C0%7C636410105176167085&sdata=RMnfbFKmk4qoxPf6QRAMDaTU2Bq UJjAHkuDkotX1LC0%3D&reserved=0 F%2Fforums.matronics.com&data=02%7C01%7Cragingnsweet%40msn.com%7C99051ea9 05604397a75808d4fb9e6a0b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C63641 0105176167085&sdata=GU1CjBFvmEWWrIrlwgUm2u7db4kEHsr%2F31Wmt%2FDGLL0%3D&re served=0 F%2Fwiki.matronics.com&data=02%7C01%7Cragingnsweet%40msn.com%7C99051ea905 604397a75808d4fb9e6a0b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C6364101 05176167085&sdata=hlwDJj4r2rxDFvIhCXocUxYf0cF4ET3KqdKbZcgevMQ%3D&reserved =0 F%2Fwww.matronics.com%2Fcontribution&data=02%7C01%7Cragingnsweet%40msn.co m%7C99051ea905604397a75808d4fb9e6a0b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1 %7C0%7C636410105176167085&sdata=ad7ySTibl4BLIrxCAZqWYIYkF4K5RJ%2FDU2NM3OM 1Se8%3D&reserved=0 ________________________________ Message 5 _____________________________________ Time: 03:53:21 PM PST US Subject: Pietenpol-List: Re: Cont. 0200 prop pitch From: "TriScout" .... -------- KLNC A65-8 N2308C Slick 4330's AN Hardware Airframe 780TT W72CK-42 Sensenich Standard Factory GN-1 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=472890#472890 Attachments: http://forums.matronics.com//files/img_9473_201.jpg ________________________________ Message 6 _____________________________________ Time: 06:23:37 PM PST US From: shad bell Subject: Re: Pietenpol-List: Re: Cont. 0200 prop pitch I know that the cessna 150 with same engine uses a 69-48 for climb a 69-50 standard and i brlieve 69-52 for cruise. These are all aluminum McCauley pr ops. The 150 cruises about 100mph. Not sure if this helps. I think the figu re my prop builder told me was one inch of length equals about 50rpm.=C2- Shad Sent from Yahoo Mail for iPhone On Thursday, September 14, 2017, 5:00 PM, L. Harris wr ote: Just a data point for you: 100hp at 2750rpm, 95 mph - arithmetic says you s hould have a 66/42 prop. Lorenzo From: owner-pietenpol-list-server@matronics.com on behalf of pjb Sent: Thursday, September 14, 2017 2:25 PM Subject: Pietenpol-List: Re: Cont. 0200 prop pitch=C2---> Pietenpol-List message posted by: "pjb" pjb wrote: > I recently replaced the Continental A75 on my Pietenpol with > an 0200-A. > We used the Cloudcars 74-38 that was on the A75 after counterboring > the holes to fit the 0200-A. > > It looks large in the photo but there is=C2- 9" clearance !! > > > Full throttle static rpm was 2500 and=C2- the first 2 test flights show ed > normal operating rpms . > > Patricia I spoke too soon !! We have flown about 7 hours since installing the=C2- 0 SMOH 0-200A engine on my Pietenpol so I now have a better idea of the performance as the engine 'loosens up' The 74-38 prop is way too fine a pitch and the engine needs to be throttled back to prevent overspeeding. The result is that we're not able to use the full power of the engine and we're not getting either good climb or good cruise. A few days ago, I tried a borrowed 72-40 prop and it was considerably better=C2- [ did not overspeed on climb out but did overspeed in cruise. I think we still need a slightly coarser pitch and will be trying out another borrowed prop this week. When I have a good idea of the numbers, I will buy one. I still want a wood prop. Has anyone had a similar experience matching a wood prop to the 0-200A engine on a Piet ? Patricia Read this topic online here: https://nam03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fforums.m atronics.com%2Fviewtopic.php%3Fp%3D472878%23472878&data=02%7C01%7Cragingn sweet%40msn.com%7C99051ea905604397a75808d4fb9e6a0b%7C84df9e7fe9f640afb435aa aaaaaaaaaa%7C1%7C0%7C636410105176167085&sdata=CznEedosqHsuwAu5qLZ8BkqftlD 6qtMXPkgmMU3k8EE%3D&reserved=0 -List Email Forum - nks.protection.outlook.com/?url=http%3A%2F%2Fwww.matronics.com%2FNavigato r%3FPietenpol-List&data=02%7C01%7Cragingnsweet%40msn.com%7C99051ea9056043 97a75808d4fb9e6a0b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C63641010517 6167085&sdata=RMnfbFKmk4qoxPf6QRAMDaTU2BqUJjAHkuDkotX1LC0%3D&reserved=0 " previewremoved="true">https://nam03.safelinks.protection.outlook.com/?u rl=http%3A%2F%2Fwww.matronics.com%2FNavigator%3FPietenpol-List&data=02% 7C01%7Cragingnsweet%40msn.com%7C99051ea905604397a75808d4fb9e6a0b%7C84df9e7f e9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636410105176167085&sdata=RMnfbFKmk4qox Pf6QRAMDaTU2BqUJjAHkuDkotX1LC0%3D&reserved=0 p;=C2-=C2- - MATRONICS WEB FORUMS - nks.protection.outlook.com/?url=http%3A%2F%2Fforums.matronics.com&data= 02%7C01%7Cragingnsweet%40msn.com%7C99051ea905604397a75808d4fb9e6a0b%7C84df9 e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636410105176167085&sdata=GU1CjBFvmE WWrIrlwgUm2u7db4kEHsr%2F31Wmt%2FDGLL0%3D&reserved=0" previewremoved="tr ue">https://nam03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fforu ms.matronics.com&data=02%7C01%7Cragingnsweet%40msn.com%7C99051ea905604397 a75808d4fb9e6a0b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C6364101051761 67085&sdata=GU1CjBFvmEWWrIrlwgUm2u7db4kEHsr%2F31Wmt%2FDGLL0%3D&reserved =0 p;=C2- - NEW MATRONICS LIST WIKI - nks.protection.outlook.com/?url=http%3A%2F%2Fwiki.matronics.com&data=02 %7C01%7Cragingnsweet%40msn.com%7C99051ea905604397a75808d4fb9e6a0b%7C84df9e7 fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636410105176167085&sdata=hlwDJj4r2rxD FvIhCXocUxYf0cF4ET3KqdKbZcgevMQ%3D&reserved=0" previewremoved="true">ht tps://nam03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwiki.matro nics.com&data=02%7C01%7Cragingnsweet%40msn.com%7C99051ea905604397a75808d4 fb9e6a0b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636410105176167085&sd ata=hlwDJj4r2rxDFvIhCXocUxYf0cF4ET3KqdKbZcgevMQ%3D&reserved=0 p; - List Contribution Web Site - p;=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2- =C2-=C2-=C2-=C2-=C2- -Matt Dralle, List Admin. nks.protection.outlook.com/?url=http%3A%2F%2Fwww.matronics.com%2Fcontribu tion&data=02%7C01%7Cragingnsweet%40msn.com%7C99051ea905604397a75808d4fb9e 6a0b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636410105176167085&sdata =ad7ySTibl4BLIrxCAZqWYIYkF4K5RJ%2FDU2NM3OM1Se8%3D&reserved=0" previewre moved="true">https://nam03.safelinks.protection.outlook.com/?url=http%3 A%2F%2Fwww.matronics.com%2Fcontribution&data=02%7C01%7Cragingnsweet%40msn .com%7C99051ea905604397a75808d4fb9e6a0b%7C84df9e7fe9f640afb435aaaaaaaaaaaa% 7C1%7C0%7C636410105176167085&sdata=ad7ySTibl4BLIrxCAZqWYIYkF4K5RJ%2FDU2NM 3OM1Se8%3D&reserved=0 ________________________________ Message 7 _____________________________________ Time: 09:25:59 PM PST US Subject: Pietenpol-List: Re: Cont. 0200 prop pitch From: "taildrags" My two cents: the Air Camper (don't know about the GN-1) was never intended to cruise at either 95 or 100 MPH. The O-200 should give excellent climb performance with the airplane fully fueled and loaded and on high/hot days, with the right prop on the airplane, but it will be throttled back considerably in cruise. The design Vne for an Air Camper is somewhere around 95 MPH and even at that speed it's not a happy airplane. The Corvair/Piet guys know how best to use 100 HP on an Air Camper and it has nothing to do with cruising at 100 MPH. My opinion only, please discuss because that's why we are all here. -------- Oscar Zuniga Medford, OR Air Camper NX41CC "Scout" A75 power, 72x36 Culver prop Read this topic online here: http://forums.matronics.com/viewtopic.php?p=472896#472896 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message pietenpol-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Pietenpol-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/pietenpol-list Browse Digests http://www.matronics.com/digest/pietenpol-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.