Date
1 - 20 of 23
Older Rotax 503
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rondefly@...
I sent this to the Q1 list but didn't get any response's. so will try other
lists. I have a lead on an older 503, it has the points for ignition and there are not the bolt holes for the reduction drives, has anyone adapted areduction * to this engine? I'm sure it could be done with belts but don't know where to start, Is there any way I could adapt a reduction box to this engine? Thanks Ron T Ron & Carolyn Triano Q-200 N4710P My Web http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page8.html Quickie 1: http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page9.html Livermore Fly-in http://www.farnamengineering.com/LivermoreTandemWingFlyin.html
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David J. Gall
Ron,
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Save your money. Don't use that old boat anchor. It'll kill you in a Quickie and it's not even eligible for the Rotax trade-in program since it doesn't have a gearbox. You want a newer 503 with dual Ducati ignition, oil injection, and a 'B' gearbox with a 2.58:1 gear ratio (2.00:1 if you wanna be like Norm Howell). No cheap-o substitutes. David J. Gall (Just my humble, unsolicited recommendation.)
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rondefly@...
David, Thanks for the info, thought it was so cheap for some reason. But who
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is Norm Howell? Don't know of him. Ron T Ron & Carolyn Triano Q-200 N4710P My Web http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page8.html Quickie 1: http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page9.html Livermore Fly-in http://www.farnamengineering.com/LivermoreTandemWingFlyin.html
-----Original Message-----
From: Q-LIST@... [mailto:Q-LIST@...]On Behalf Of David J. Gall Sent: Monday, August 01, 2005 8:47 AM To: Q-LIST@... Subject: RE: [Q-LIST] Older Rotax 503 Ron, Save your money. Don't use that old boat anchor. It'll kill you in a Quickie and it's not even eligible for the Rotax trade-in program since it doesn't have a gearbox. You want a newer 503 with dual Ducati ignition, oil injection, and a 'B' gearbox with a 2.58:1 gear ratio (2.00:1 if you wanna be like Norm Howell). No cheap-o substitutes. David J. Gall (Just my humble, unsolicited recommendation.) -----Original Message----- Quickie Builders Association WEB site http://www.quickiebuilders.org _____ YAHOO! GROUPS LINKS * Visit your group " Q-LIST <http://groups.yahoo.com/group/Q-LIST> " on the web. * To unsubscribe from this group, send an email to: Q-LIST-unsubscribe@... <mailto:Q-LIST-unsubscribe@...?subject=Unsubscribe> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> . _____
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Jon Finley <jon@...>
Amen! In fact, think twice about using a two-stroke at all.
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Jon Finley Quoting "David J. Gall" <David@...>:
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rondefly@...
Jon, What year VW has the 1835’s, What should I look for?
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Ron T Ron & Carolyn Triano Q-200 N4710P My Web http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page8.html Quickie 1: http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page9.html Livermore Fly-in http://www.farnamengineering.com/LivermoreTandemWingFlyin.html
-----Original Message-----
From: Q-LIST@... [mailto:Q-LIST@...]On Behalf Of Jon Finley Sent: Monday, August 01, 2005 9:26 AM To: Q-LIST@... Subject: RE: [Q-LIST] Older Rotax 503 Amen! In fact, think twice about using a two-stroke at all. Jon Finley Quoting "David J. Gall" <David@...>: Quickie Howell).
Quickie Builders Association WEB site http://www.quickiebuilders.org _____ YAHOO! GROUPS LINKS * Visit your group " Q-LIST <http://groups.yahoo.com/group/Q-LIST> " on the web. * To unsubscribe from this group, send an email to: Q-LIST-unsubscribe@... <mailto:Q-LIST-unsubscribe@...?subject=Unsubscribe> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> . _____ [Non-text portions of this message have been removed]
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Jon Finley <jon@...>
Well... I'm not exactly advising you to go with the four-cylinder VW. I think
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there are a number of really good four-stroke options available. However; it seems that you have to choose between an expensive engine that is mostly ready to go or a cheap(er) engine that needs a bunch of work. The HKS immediately comes to mind. Most of my VW knowledge has evaporated away. If memory serves, the largest engine in a vehicle was 1600cc. You typically just get a Type 3 engine and then build it to the size you want. I understand that all the parts folks want a year though - I think I always used a 1968 Bug. If you are really serious about a VW and don't mind doing a bunch of work - let me know. I have a bunch of ideas about what I would do if doing it again. Jon Quoting rondefly@...:
Jon, What year VW has the 1835s, What should I look for?
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MartinErni@...
Dave,
Glad to see you getting some quality time with your loved ones. Earnest
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rondefly@...
Thanks Jon for the reply, at this point I really don’t know how I will go,
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but will keep you in mind if I go with the VW. Ron T Ron & Carolyn Triano Q-200 N4710P My Web http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page8.html Quickie 1: http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page9.html Livermore Fly-in http://www.farnamengineering.com/LivermoreTandemWingFlyin.html
-----Original Message-----
From: Q-LIST@... [mailto:Q-LIST@...]On Behalf Of Jon Finley Sent: Monday, August 01, 2005 10:03 AM To: Q-LIST@... Subject: RE: [Q-LIST] Older Rotax 503 Well... I'm not exactly advising you to go with the four-cylinder VW. I think there are a number of really good four-stroke options available. However; it seems that you have to choose between an expensive engine that is mostly ready to go or a cheap(er) engine that needs a bunch of work. The HKS immediately comes to mind. Most of my VW knowledge has evaporated away. If memory serves, the largest engine in a vehicle was 1600cc. You typically just get a Type 3 engine and then build it to the size you want. I understand that all the parts folks want a year though - I think I always used a 1968 Bug. If you are really serious about a VW and don't mind doing a bunch of work - let me know. I have a bunch of ideas about what I would do if doing it again. Jon Quoting rondefly@...: Jon, What year VW has the 1835's, What should I look for? Quickie Builders Association WEB site http://www.quickiebuilders.org _____ YAHOO! GROUPS LINKS * Visit your group " Q-LIST <http://groups.yahoo.com/group/Q-LIST> " on the web. * To unsubscribe from this group, send an email to: Q-LIST-unsubscribe@... <mailto:Q-LIST-unsubscribe@...?subject=Unsubscribe> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> . _____ [Non-text portions of this message have been removed]
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mike twombley <twombleyw@...>
Hi all!!
An 1835 is a Type I VW using a stock 69 mm stroke and 92 mm bore size... thought by many to be a poor compromise due to the thin cylinder thickness and the resultant tendency to cool poorly. In my experience they run good but are not particularly long lived. Ring sealing being my biggest complaint. I used to commute up and down State highway 99 in the central valley of California, 180 miles a day in a 63 VW bus in a series of 1835 and 1776 motors for some years and the 1776s would outlast the 1835s 2:1. The high heat and the poor inherent cooling of an early bus is brutal. Ring seal was always the failure mode in the 1835s!! Unless I committed a fatal operator error. Use of Nicasil (nickies) cylinders will help here considerably. Isn¹t a 4 cylinder VW a little heavy on a Q1? Hummel advertises 45 HP with their twin with 92mm ³nickies². Of course conventional wisdom is, torque is everything in aircraft. I would be curious what kind of increase in torque a 92 mm bore 74 mm stroke twin would offer. My biggest question is what is the best approach on a 1/2 VW case, cut and welded or uncut? I would sure like a lot more detail about Tom Solan¹s Super Quickie. That looks like a really well thought out modification, anybody got anything on that??? Tom, are you out there?? I searched the database and came up dry! John, thanks for the good Quickie resources on your website. Thanks Mike From: Jon Finley <jon@...> Well... I'm not exactly advising you to go with the four-cylinder VW. I think [Non-text portions of this message have been removed]
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David J. Gall
Ron,
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Norm Howell built a sweet Quickie called the "Ugly Quickling" in the 80's. He set some records in it with his highly modified Onan (not fire-breathing, just intake, exhaust, and >>lotsa good cooling mods<< hint hint). After he got tired of the Onan (poor climb), he switched to a Rotax 503 with a 2.00:1 gearbox. I think he used the Miller-style cowl. The gearbox necessitated a tiny prop, with quite high pitch. The climb was a little better than with the Onan, but the cruise speed was way up there. I don't recall a solid number from anything published, but IIRC there was something about 150mph at 50% power and some talk about the airframe redline being around 170mph and that being easily do-able at cruise.... I'd have to look things up to verify all the foregoing so don't take it as gospel. Do your own research. Sport Aviation magazine Sept. 1987 page 48 for the Onan powered version. Q-Talk back issues for the Rotax upgrade info (sorry, I don't have issue numbers). BTW, I have a 503 set aside for my Quickie for after the Onan scares me too much. The oil injection is a necessity in my opinion. The non-injected engines rely on the fuel mix for lubrication and at high airspeed/low throttle, the lubrication just isn't enough for the high RPM at which the prop is turning the engine such as during descent (like on that mock strafing run!). With oil injection, the oil delivery is metered in part by throttle setting and in part by RPM, so at low throttle/high RPM you get a "richer" oil mix and (hopefully!) adequate lubrication. Of course, ultralights don't suffer the 'detriment' of high speeds so ignore your ultralight buddies' advice on this issue. Also, ignore the ultralight prop manufacturer's recommendations (Powerfin, Ivo, Warp, etc.) and get a Catto prop (or equivalent) for your 503 SuperQuickie.... David J. Gall
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Doug Humble <hawkidoug@...>
I don't know too much about them, but you might look into the Kohler Cammand 25hp engine. A very modern engine. I think you have to be careful which side you mount the prop on though. Good luck and keep us posted.
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Doug "Hawkeye" Humble www.asignabove.net Omaha NE N25974
----- Original Message -----
From: <rondefly@...> To: <Q-LIST@...> Sent: Monday, August 01, 2005 12:32 PM Subject: RE: [Q-LIST] Older Rotax 503 Thanks Jon for the reply, at this point I really don't know how I will go, but will keep you in mind if I go with the VW. Ron T Ron & Carolyn Triano Q-200 N4710P My Web http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page8.html Quickie 1: http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page9.html Livermore Fly-in http://www.farnamengineering.com/LivermoreTandemWingFlyin.html -----Original Message----- From: Q-LIST@... [mailto:Q-LIST@...]On Behalf Of Jon Finley Sent: Monday, August 01, 2005 10:03 AM To: Q-LIST@... Subject: RE: [Q-LIST] Older Rotax 503 Well... I'm not exactly advising you to go with the four-cylinder VW. I think there are a number of really good four-stroke options available. However; it seems that you have to choose between an expensive engine that is mostly ready to go or a cheap(er) engine that needs a bunch of work. The HKS immediately comes to mind. Most of my VW knowledge has evaporated away. If memory serves, the largest engine in a vehicle was 1600cc. You typically just get a Type 3 engine and then build it to the size you want. I understand that all the parts folks want a year though - I think I always used a 1968 Bug. If you are really serious about a VW and don't mind doing a bunch of work - let me know. I have a bunch of ideas about what I would do if doing it again. Jon Quoting rondefly@...: Jon, What year VW has the 1835's, What should I look for? Quickie Builders Association WEB site http://www.quickiebuilders.org _____ YAHOO! GROUPS LINKS * Visit your group " Q-LIST <http://groups.yahoo.com/group/Q-LIST> " on the web. * To unsubscribe from this group, send an email to: Q-LIST-unsubscribe@... <mailto:Q-LIST-unsubscribe@...?subject=Unsubscribe> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> . _____ Quickie Builders Association WEB site http://www.quickiebuilders.org Yahoo! Groups Links
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Dave <dave@...>
Hey Ron,
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Did I miss a post or something from you? I thought you were in striking distance of finishing your Q200. What's up with the talk of a Quickie? The reason I ask is because as I drew closer to finishing my plane, I really had to get the blinders on to anything but what it takes to get that project done. I made choices on what was needed for safe flight, what would be nice to have and if I get around to it someday and worked on what was needed. I worked on the nice to have things when I had a block of time, like winter, where I knew it would not slow me down to work on those things. I just flew 2.6 hours this past weekend and it really struck me how sweet my Tri-Q2 flies and what a pleasure it is to strap it on and go "floating." Keep at it. The rewards are worth it. Dave Richardson Tri-Q2 825DR 12.9 hrs (32.25% of the way there! But who's counting?)
-----Original Message-----
From: rondefly@... [mailto:rondefly@...] Sent: Monday, August 01, 2005 1:33 PM To: Q-LIST@... Subject: RE: [Q-LIST] Older Rotax 503 Thanks Jon for the reply, at this point I really don't know how I will go, but will keep you in mind if I go with the VW. Ron T Ron & Carolyn Triano Q-200 N4710P My Web http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page8.htm l Quickie 1: http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page9.htm l Livermore Fly-in http://www.farnamengineering.com/LivermoreTandemWingFlyin.html -----Original Message----- From: Q-LIST@... [mailto:Q-LIST@...]On Behalf Of Jon Finley Sent: Monday, August 01, 2005 10:03 AM To: Q-LIST@... Subject: RE: [Q-LIST] Older Rotax 503 Well... I'm not exactly advising you to go with the four-cylinder VW. I think there are a number of really good four-stroke options available. However; it seems that you have to choose between an expensive engine that is mostly ready to go or a cheap(er) engine that needs a bunch of work. The HKS immediately comes to mind. Most of my VW knowledge has evaporated away. If memory serves, the largest engine in a vehicle was 1600cc. You typically just get a Type 3 engine and then build it to the size you want. I understand that all the parts folks want a year though - I think I always used a 1968 Bug. If you are really serious about a VW and don't mind doing a bunch of work - let me know. I have a bunch of ideas about what I would do if doing it again. Jon Quoting rondefly@...: Jon, What year VW has the 1835's, What should I look for? Quickie Builders Association WEB site http://www.quickiebuilders.org _____ YAHOO! GROUPS LINKS * Visit your group " Q-LIST <http://groups.yahoo.com/group/Q-LIST> " on the web. * To unsubscribe from this group, send an email to: Q-LIST-unsubscribe@... <mailto:Q-LIST-unsubscribe@...?subject=Unsubscribe> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> . _____ [Non-text portions of this message have been removed] Quickie Builders Association WEB site http://www.quickiebuilders.org Yahoo! Groups Links
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rondefly@...
Couldn't pass it up. My Dragonfly had been sitting in my workshop for 9+
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years, So I put an add on Barnstormers and found Gary. Now I will see how to make the Q1 into a LSA. Being as I am setting the specs for it I will set the pitch buck at the stall speed I need. It is very close to the #'s uncle FAA wants. I really don't want to put a larger engine on it but may have to due to the altitude I live at, 6240'. But yes, I am very close on the 200 and that is my primary weekend work, I couldn't resist seeing Sam and others with the round duct inlets so am in process of building the plenum with the round inlets. Will have some pictures soon. Back to that dancing, you know, one step forward and two steps backward. Ron T Ron & Carolyn Triano Q-200 N4710P My Web http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page8.html Quickie 1: http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page9.html Livermore Fly-in http://www.farnamengineering.com/LivermoreTandemWingFlyin.html
-----Original Message-----
From: Q-LIST@... [mailto:Q-LIST@...]On Behalf Of Dave Sent: Monday, August 01, 2005 1:49 PM To: Q-LIST@... Subject: RE: [Q-LIST] Older Rotax 503 Hey Ron, Did I miss a post or something from you? I thought you were in striking distance of finishing your Q200. What's up with the talk of a Quickie? The reason I ask is because as I drew closer to finishing my plane, I really had to get the blinders on to anything but what it takes to get that project done. I made choices on what was needed for safe flight, what would be nice to have and if I get around to it someday and worked on what was needed. I worked on the nice to have things when I had a block of time, like winter, where I knew it would not slow me down to work on those things. I just flew 2.6 hours this past weekend and it really struck me how sweet my Tri-Q2 flies and what a pleasure it is to strap it on and go "floating." Keep at it. The rewards are worth it. Dave Richardson Tri-Q2 825DR 12.9 hrs (32.25% of the way there! But who's counting?) -----Original Message----- From: rondefly@... [mailto:rondefly@...] Sent: Monday, August 01, 2005 1:33 PM To: Q-LIST@... Subject: RE: [Q-LIST] Older Rotax 503 Thanks Jon for the reply, at this point I really don't know how I will go, but will keep you in mind if I go with the VW. Ron T Ron & Carolyn Triano Q-200 N4710P My Web http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page8.htm <http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page8.htm> l Quickie 1: http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page9.htm <http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page9.htm> l Livermore Fly-in http://www.farnamengineering.com/LivermoreTandemWingFlyin.html <http://www.farnamengineering.com/LivermoreTandemWingFlyin.html> -----Original Message----- From: Q-LIST@... [mailto:Q-LIST@...]On Behalf Of Jon Finley Sent: Monday, August 01, 2005 10:03 AM To: Q-LIST@... Subject: RE: [Q-LIST] Older Rotax 503 Well... I'm not exactly advising you to go with the four-cylinder VW. I think there are a number of really good four-stroke options available. However; it seems that you have to choose between an expensive engine that is mostly ready to go or a cheap(er) engine that needs a bunch of work. The HKS immediately comes to mind. Most of my VW knowledge has evaporated away. If memory serves, the largest engine in a vehicle was 1600cc. You typically just get a Type 3 engine and then build it to the size you want. I understand that all the parts folks want a year though - I think I always used a 1968 Bug. If you are really serious about a VW and don't mind doing a bunch of work - let me know. I have a bunch of ideas about what I would do if doing it again. Jon Quoting rondefly@...: Jon, What year VW has the 1835's, What should I look for? Quickie Builders Association WEB site http://www.quickiebuilders.org <http://www.quickiebuilders.org> _____ YAHOO! GROUPS LINKS * Visit your group " Q-LIST < http://groups.yahoo.com/group/Q-LIST <http://groups.yahoo.com/group/Q-LIST> > " on the web. * To unsubscribe from this group, send an email to: Q-LIST-unsubscribe@... <mailto:Q-LIST-unsubscribe@...?subject=Unsubscribe> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service < http://docs.yahoo.com/info/terms/ <http://docs.yahoo.com/info/terms/> > . _____ Quickie Builders Association WEB site http://www.quickiebuilders.org <http://www.quickiebuilders.org> Yahoo! Groups Links Quickie Builders Association WEB site http://www.quickiebuilders.org <http://www.quickiebuilders.org> SPONSORED LINKS Aviation <http://groups.yahoo.com/gads?t=ms&k=Aviation&w1=Aviation&w2=Quickie&w3=Recr eation&w4=Sports&w5=Aviation+school&w6=Outdoor+recreation&c=6&s=100&.sig=d6L bAnVGd0FLDuW5XKtTDg> Quickie <http://groups.yahoo.com/gads?t=ms&k=Quickie&w1=Aviation&w2=Quickie&w3=Recre ation&w4=Sports&w5=Aviation+school&w6=Outdoor+recreation&c=6&s=100&.sig=-5wj zf-_G4rEBW55NEEc-w> Recreation <http://groups.yahoo.com/gads?t=ms&k=Recreation&w1=Aviation&w2=Quickie&w3=Re creation&w4=Sports&w5=Aviation+school&w6=Outdoor+recreation&c=6&s=100&.sig=2 7E58bDl5ZcYMxljxO6B8A> Sports <http://groups.yahoo.com/gads?t=ms&k=Sports&w1=Aviation&w2=Quickie&w3=Recrea tion&w4=Sports&w5=Aviation+school&w6=Outdoor+recreation&c=6&s=100&.sig=rWpug cCFs__v2Z71KYSvDA> Aviation <http://groups.yahoo.com/gads?t=ms&k=Aviation+school&w1=Aviation&w2=Quickie& w3=Recreation&w4=Sports&w5=Aviation+school&w6=Outdoor+recreation&c=6&s=100&. sig=8vrvG63uw5awQqbMB-wYDw> school Outdoor <http://groups.yahoo.com/gads?t=ms&k=Outdoor+recreation&w1=Aviation&w2=Quick ie&w3=Recreation&w4=Sports&w5=Aviation+school&w6=Outdoor+recreation&c=6&s=10 0&.sig=43KWAXWSoypULtHANABYnQ> recreation _____ YAHOO! 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Dave <dave@...>
Thanks, Earnest.
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More than you know. Susie played a big part in helping me get the plane back together. She helped get the new holes drilled in the torque tube and we were out there Saturday for 6+ hours getting the elevators back in. Without her, I'd still be using colorful language trying to get it all back in place. Dave
-----Original Message-----
From: MartinErni@... [mailto:MartinErni@...] Sent: Monday, August 01, 2005 5:13 PM To: Q-LIST@... Subject: Re: [Q-LIST] Older Rotax 503 Dave, Glad to see you getting some quality time with your loved ones. Earnest Quickie Builders Association WEB site http://www.quickiebuilders.org Yahoo! Groups Links
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Martin Burns
Just to add to Doug's comments: The Kohler Command engines will give you a very low thrustline, which will severely limit the size of prop you can turn. It is probably worth using a belt reduction drive, which raises the prop line, allowing a larger prop and enabling you to run the engine faster than the stock 3600rpm to get more power from it. The belt drive may also provide some isolation to reduce the torsional stress on the crankshaft that can give problems with mounting the prop directly on the power take-off end.
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This is the route I am trying. Martin Burns Q1 G-BKSE Scotland
-----Original Message-----
From: Doug Humble [mailto:hawkidoug@...] Sent: 01 August 2005 9:08 PM To: Q-LIST@... Subject: Re: [Q-LIST] Older Rotax 503 I don't know too much about them, but you might look into the Kohler Cammand 25hp engine. A very modern engine. I think you have to be careful which side you mount the prop on though. Good luck and keep us posted. Doug "Hawkeye" Humble
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rondefly@...
Martin, Do you have any details on the reduction drive you are using, picts,
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etc. Is the Kohler engine much higher than the Onan? I've also thought of using a Kohler or Honda engine with a turbo or Nitrous boost for takeoff only to get out of my high alt airport. Ron T Ron & Carolyn Triano Q-200 N4710P My Web http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page8.html Quickie 1: http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page9.html Livermore Fly-in http://www.farnamengineering.com/LivermoreTandemWingFlyin.html
-----Original Message-----
From: Q-LIST@... [mailto:Q-LIST@...]On Behalf Of Martin Burns Sent: Tuesday, August 02, 2005 4:23 AM To: Q-LIST@... Subject: RE: [Q-LIST] Older Rotax 503 Just to add to Doug's comments: The Kohler Command engines will give you a very low thrustline, which will severely limit the size of prop you can turn. It is probably worth using a belt reduction drive, which raises the prop line, allowing a larger prop and enabling you to run the engine faster than the stock 3600rpm to get more power from it. The belt drive may also provide some isolation to reduce the torsional stress on the crankshaft that can give problems with mounting the prop directly on the power take-off end. This is the route I am trying. Martin Burns Q1 G-BKSE Scotland -----Original Message----- From: Doug Humble [mailto:hawkidoug@...] Sent: 01 August 2005 9:08 PM To: Q-LIST@... Subject: Re: [Q-LIST] Older Rotax 503 I don't know too much about them, but you might look into the Kohler Cammand 25hp engine. A very modern engine. I think you have to be careful which side you mount the prop on though. Good luck and keep us posted. Doug "Hawkeye" Humble Quickie Builders Association WEB site http://www.quickiebuilders.org <http://www.quickiebuilders.org> _____ YAHOO! GROUPS LINKS * Visit your group " Q-LIST <http://groups.yahoo.com/group/Q-LIST> " on the web. * To unsubscribe from this group, send an email to: Q-LIST-unsubscribe@... <mailto:Q-LIST-unsubscribe@...?subject=Unsubscribe> * Your use of Yahoo! Groups is subject to the Yahoo! <http://docs.yahoo.com/info/terms/> Terms of Service. _____
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Martin Burns
Ron,
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It is not the height of the engine that is the problem. Because the Kohler is a V twin, the crankshaft is at the bottom, below the cylinders. This shape also means that it will fit snugly agains the firewall, keeping the c.g. well aft. I will email you a photo of the setup offline. The reduction drive is a purpose made cog-belt drive. Martin Burns Q1 G-BKSE Scotland
-----Original Message-----
From: rondefly@... [mailto:rondefly@...] Sent: 02 August 2005 1:36 PM To: Q-LIST@... Subject: RE: [Q-LIST] Older Rotax 503 Martin, Do you have any details on the reduction drive you are using, picts, etc. Is the Kohler engine much higher than the Onan? I've also thought of using a Kohler or Honda engine with a turbo or Nitrous boost for takeoff only to get out of my high alt airport. Ron T
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Mike Perry <dmperry1012@...>
Great Plains Aircraft has info on the 1/2 VW, kit or plans, 35hp, 87 lbs.:
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http://www.greatplainsas.com/schalfvw.html GPA also sells the Kohler Command 25 hp for airboat use: http://www.greatplainsas.com/airengine.html Mike Perry
At 03:07 PM 8/1/2005 -0500, you wrote:
I don't know too much about them, but you might look into the Kohler Cammand
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David J. Gall
Ron,
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Some follow-up: Norm Howell set an FAI record as follows (taken from the FAI website): Sub-class : C-1a/0 (Landplanes: take off weight less than 300 kg) Group 3 : turbo-jet Speed over a recognised course : 233.54 km/h Date of flight: 27/07/1988 Pilot: Norman E. HOWELL (USA) Course/place: Enid, OK (USA) Aircraft: Quickie (1 Rotax 503 Dual Carb, 52 hp) Registered 'N17UQ' Database ID 1107 Note that FAI incorrectly listed the Rotax 503 DC as a "turbo-jet"!!! The speed of 233.54 km/hr works out to 145.115mph. That record was set in 1988. In the Jan/Feb 1990 Q-Talk (pg. 8), Norm talks about his engine and gearbox. He says he recommeds the 2.238:1 ratio. He says he's using a 2.00:1 and does not recommend it. With the 2.00:1, he ran a Prince 2 blade 46D x 53P prop, and that it's "like third gear on a Porsche... you go like a bat out of hell, but you are slow off the line. I still don't know how fast mine will go since airframe redline occurs before engine redline and it's still accelerating."(!) He talks about the marginal takeoff and climb performance, then recommeds the 2.238:1, indicating 1200 fpm climbs at 75mph. He says he'll report on the performance differences when he finishes changing over to the 2.238:1. I haven't had time to look up the follow-up report. FYI, Howell held four of the five records ever set in a Quickie. All have been surpassed. He also held one record in a Long-EZ, and is the current holder of seven records set in a Boeing C-17 Globemaster. David J. Gall
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David J. Gall
Why use nitrous? Get a 35hp Briggs & Stratton big block engine. At
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993cc/60ci there's just no substitute for cubic inches.... David J. Gall
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