---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Mon 06/24/13: 22 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:52 AM - thrust (Lee) 2. 06:24 AM - Re: thrust (Dennis Rowe) 3. 06:26 AM - Re: thrust (Richard Pike) 4. 06:35 AM - Looking for a 3.47 to 1 gearbox (Dennis Rowe) 5. 06:48 AM - Re: Looking for a 3.47 to 1 gearbox (Mike Welch) 6. 06:51 AM - Re: Re: thrust (Dennis Rowe) 7. 07:19 AM - Re: Looking for a 3.47 to 1 gearbox (Dennis Rowe) 8. 07:31 AM - Mike's Kolb MkIII (Herb) 9. 07:33 AM - Re: thrust (John Hauck) 10. 08:08 AM - Re: Re: Rotax 447 RPM Varies (Richard Girard) 11. 09:25 AM - Re: Mike's Kolb MkIII (Mike Welch) 12. 09:40 AM - Re: thrust (gliderx5@comcast.net) 13. 10:24 AM - Re: Mike's Kolb MkIII (Dennis Rowe) 14. 02:55 PM - Re: Mike's Kolb MkIII (Herb) 15. 02:58 PM - Re: Mike's Kolb MkIII (Herb) 16. 06:34 PM - Re: Pre-Purchase Inspection, Firestar (Allonsye) 17. 06:47 PM - Re: akron flyin of B-29 (Brad Nation) 18. 06:58 PM - Re: Mike's Kolb MkIII (Brad Nation) 19. 07:05 PM - Re: Re: Storm Aftermath (Brad Nation) 20. 07:25 PM - Re: Mike's Kolb MkIII (Mike Welch) 21. 08:02 PM - Re: Rotax 447 RPM Varies (Ducati SS) 22. 09:19 PM - Re: Firestar II stall speed... (Allonsye) ________________________________ Message 1 _____________________________________ Time: 05:52:15 AM PST US From: "Lee" Subject: Kolb-List: thrust Hey everyone, I know this subject probably has been beaten to death but here goes anyway. I have a 503 Rotax with a gearbox and a 60 inch three blade IVO prop. (not sure of the gear ratio. This is on a Twinstar MKII. I have it set to give me 6500 rpm on climb out. Is there a way to get any more thrust out of this with a prop change or am I maxed out with what I have ? I am trying to get off the ground quicker. (it is fine for one person, but uses a lot of runway with 2) Also I am still looking at landing gear issues, would the person that made spring steel gear please contact me and let me know what size, wall thickness, grade material and hardness he used for his. thanks for any responses. Lee, Twinstar MKII and CGS Hawk Classic ________________________________ Message 2 _____________________________________ Time: 06:24:31 AM PST US Subject: Re: Kolb-List: thrust From: Dennis Rowe A 66 or 68 inch prop might help, if you could change to a C gearbox with the 3.47 to 1 ratio and use a 68 to 72 inch three blade you would get the most p ossible out of the 503. Dennis "Skid" Rowe Mk3, 690L-70, Leechburg, PA On Jun 24, 2013, at 8:51 AM, "Lee" wrote: > Hey everyone, > I know this subject probably has been beaten to death but here goes anyway .. > I have a 503 Rotax with a gearbox and a 60 inch three blade IVO prop. (not sure of the gear ratio. > This is on a Twinstar MKII. > I have it set to give me 6500 rpm on climb out. > Is there a way to get any more thrust out of this with a prop change or am I maxed out with what I have ? > I am trying to get off the ground quicker. (it is fine for one person, but uses a lot of runway with 2) > Also I am still looking at landing gear issues, would the person that made spring steel gear please contact me and let me know what > size, wall thickness, grade material and hardness he used for his. > thanks for any responses. > Lee, > Twinstar MKII and CGS Hawk Classic > > ========================== ========= ========================== ========= ========================== ========= ========================== ========= > ________________________________ Message 3 _____________________________________ Time: 06:26:25 AM PST US Subject: Kolb-List: Re: thrust From: "Richard Pike" Typically you get more acceleration and climb as you make the prop longer. With a 503 and a longer 3 bladed prop - say 64" or 66" - you can get to the point that you have a lot of acceleration but you are top end limited, in effect you end up with a pure climb prop. The reason for this is if you try and crank in enough pitch into a longer 3 blade for a decent cruise speed, the engine will likely not have enough torque to rev up properly, it will be constantly overloaded. A 2 blade prop should not normally have this problem. Since the Ivo is flexible, it will be just as smooth with 2 blades as it is with 3. Right now I am running a 2 bladed 68" Ivo with a 582 and am very happy with the performance. Take off is prompt, climb is excellent, and top end is good. The engine will hit red line at full throttle in level flight and never lugs at any RPM. I had to make motor mount spacers to get the engine higher for boom tube clearance. Before I made the spacers the longest prop I could use was 66". 66" was good, 68" is better. I did have a bit more top end with the 66", but not much, and since I always cruise around 65 anyway, the 68" is all good. If I were you, I would sell the 3 blade and get a 66" 2 blade Ivo and try that. If your engine fails to make enough torque to handle it, you can trim it down to 65" or even 64" and either way you will see quite an improvement over the 60" prop. Can't help you on the landing gear. -------- Richard Pike Kolb MKIII N420P (420ldPoops) richard (at) bcchapel(dot)org Kingsport, TN 3TN0 Now faith is the substance of things hoped for, the evidence of things not seen. Hebrews 11:1 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=403285#403285 ________________________________ Message 4 _____________________________________ Time: 06:35:38 AM PST US Subject: Kolb-List: Looking for a 3.47 to 1 gearbox From: Dennis Rowe Kolbers, I am still trying to find a 3.47 to 1 gearbox to adapt to my 2SI engine. If anyone knows of a fair priced used C or E box please let me know. Dennis "Skid" Rowe Mk3, 690L-70, Leechburg, PA ________________________________ Message 5 _____________________________________ Time: 06:48:11 AM PST US Subject: Re: Kolb-List: Looking for a 3.47 to 1 gearbox From: Mike Welch Dennis, Here's a start http://www.rotaxservice.com/rotax_engines/rotax_582UL.htm Mike Welch do not archive On Jun 24, 2013, at 8:34 AM, Dennis Rowe wrote: > > Kolbers, > I am still trying to find a 3.47 to 1 gearbox to adapt to my 2SI engine. If anyone knows of a fair priced used C or E box please let me know. > > Dennis "Skid" Rowe > Mk3, 690L-70, Leechburg, PA > > > > > > > > ________________________________ Message 6 _____________________________________ Time: 06:51:53 AM PST US Subject: Re: Kolb-List: Re: thrust From: Dennis Rowe This makes me want to try an old two blade 68 inch Ivo I have laying around. I currently use a 68 inch three blade Powerfin F model. Always looking for more performance. I didn't think two blades would absorb 70hp. Dennis "Skid" Rowe Mk3, 690L-70, Leechburg, PA On Jun 24, 2013, at 9:26 AM, "Richard Pike" wrote: > > Typically you get more acceleration and climb as you make the prop longer. With a 503 and a longer 3 bladed prop - say 64" or 66" - you can get to the point that you have a lot of acceleration but you are top end limited, in effect you end up with a pure climb prop. The reason for this is if you try and crank in enough pitch into a longer 3 blade for a decent cruise speed, the engine will likely not have enough torque to rev up properly, it will be constantly overloaded. A 2 blade prop should not normally have this problem. Since the Ivo is flexible, it will be just as smooth with 2 blades as it is with 3. > > Right now I am running a 2 bladed 68" Ivo with a 582 and am very happy with the performance. Take off is prompt, climb is excellent, and top end is good. The engine will hit red line at full throttle in level flight and never lugs at any RPM. > > I had to make motor mount spacers to get the engine higher for boom tube clearance. Before I made the spacers the longest prop I could use was 66". 66" was good, 68" is better. I did have a bit more top end with the 66", but not much, and since I always cruise around 65 anyway, the 68" is all good. > > If I were you, I would sell the 3 blade and get a 66" 2 blade Ivo and try that. If your engine fails to make enough torque to handle it, you can trim it down to 65" or even 64" and either way you will see quite an improvement over the 60" prop. > > Can't help you on the landing gear. > > -------- > Richard Pike > Kolb MKIII N420P (420ldPoops) > richard (at) bcchapel(dot)org > Kingsport, TN 3TN0 > Now faith is the substance of things hoped for, the evidence of things not seen. > Hebrews 11:1 > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=403285#403285 > > > > > > > > > > ________________________________ Message 7 _____________________________________ Time: 07:19:57 AM PST US Subject: Re: Kolb-List: Looking for a 3.47 to 1 gearbox From: Dennis Rowe Mike, Forgot to mention I'm a scrounger, (soon to have three kids in college) . $800 bucks is my ceiling on a used gearbox. Had a good one located from a fellow Kolber but the US Postal service smashed the shipping container and lost it. Bitter disappointment! Dennis "Skid" Rowe Mk3, 690L-70, Leechburg, PA On Jun 24, 2013, at 9:47 AM, Mike Welch wrote: > > Dennis, > > Here's a start > > http://www.rotaxservice.com/rotax_engines/rotax_582UL.htm > > Mike Welch > do not archive > > > On Jun 24, 2013, at 8:34 AM, Dennis Rowe wrote: > >> >> Kolbers, >> I am still trying to find a 3.47 to 1 gearbox to adapt to my 2SI engine. If anyone knows of a fair priced used C or E box please let me know. >> >> Dennis "Skid" Rowe >> Mk3, 690L-70, Leechburg, PA > > > > > > ________________________________ Message 8 _____________________________________ Time: 07:31:11 AM PST US From: Herb Subject: Kolb-List: Mike's Kolb MkIII Mike Wondering how your Kolb is coming along...Herb On 06/24/2013 08:47 AM, Mike Welch wrote: > > Dennis, > > Here's a start > > ________________________________ Message 9 _____________________________________ Time: 07:33:29 AM PST US From: "John Hauck" Subject: RE: Kolb-List: thrust Also I am still looking at landing gear issues, would the person that made spring steel gear please contact me and let me know what size, wall thickness, grade material and hardness he used for his. thanks for any responses. Lee, Twinstar MKII and CGS Hawk Classic Lee/Kolbers: I use .120" wall 4130, heat treated to 48 Rockwell. I don't know what the diameter of the gear leg sockets of a MKII are. Probably 1.125". Good idea to weld the axle socket to the gear leg, rather than use the standard "gear leg/axle socket" that bolts to the end of the gear leg. Welding, for me, proved to be much stronger than the bolt on socket. All alignment and drilling should be done prior to heat treating. john h mkIII Rock House, south of Burns Junction, Oregon ________________________________ Message 10 ____________________________________ Time: 08:08:52 AM PST US Subject: Re: Kolb-List: Re: Rotax 447 RPM Varies From: Richard Girard Gregg, Page 15-2 of the Rotax Installation Manual for two strokes says, "A suitable fuel filter of .15 mm mesh size must be fitted between pump and carburetor. DO NOT USE PAPER FILTERS. (my emphasis). Regardless of the reason that's the requirement from the white coats in Austria. Rick Girard do not archive On Sun, Jun 23, 2013 at 3:00 PM, t41pilot wrote: > > I have a 447 with about 30 hours on it and as undoctor points out, the rpm > will change as the pitch of the aircraft changes with a given throttle > setting. Pitch changes the load on the engine so pitch up equals more load > and less indicated rpm and vice versa. My rpm changes are 200 or 300 rpm in > either direction as pitch changes. not 1000 as you are describing. So, the > important thing here is whether your problem occurs at a constant altitude > or not and just around your cruise setting or across the entire throttle > range. If you are maintaining a steady altitude, then you do have a > problem. If it occurs just in the 4 to 5 grand range and nowhere else, > then the midrange circuit in the carb needs looking at. Check for worn > needle and that the clip is still fitting snuggly in the grooves. Make sure > the rubber o ring on top of the clip is secure. Make sure your throttle > cable is snug and properly adjusted at the carb inlet. Pulse line for fuel > pump should be as short as possib! > le and stiff as possible. Pump has to lift fuel quite a ways on a > firefly. A partially plugged fuel filter will cause engine surges too. > I've read that paper style fuel filters are not recommended when using > auto gas because of the alcohol. Not sure how true that is but for a > couple of bucks I changed mine out to a different type just for peace of > mind. So far so good on my engine. I'm presently using 89 octane auto gas. > I manage my pitch during flight with a vertical deviation indicator of my > own design that works quite well. I find that I use it alot to help > maintain a constant altitude which also helps maintain a steady EGT temp. > > -------- > Gregg Kaat > 2011 Firefly > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=403226#403226 > > -- Zulu Delta Mk IIIC Thanks, Homer GBYM It isn't necessary to have relatives in Kansas City in order to be unhappy. - Groucho Marx ________________________________ Message 11 ____________________________________ Time: 09:25:49 AM PST US From: Mike Welch Subject: Re: Kolb-List: Mike's Kolb MkIII Hi Herb, The plane is coming along quite well, its mostly me that's the hangup. Since I retired a few years ago, finances have been slim pickings, and the other problem I'm having is a health issue that I am mostly recovering from. My wife an I are making plans right now to move to Florida to a retirement village, where I will go back to work and have some pocket money, and therefore I should be able to afford the flight training and sundry costs of actually flying the plane. As far as the plane goes, it virtually finished, with the exception of firing up the engine and dialing everything in. In the meantime, for the last few months I've been working on my GlaStar. Since I have all the parts on-hand, it doesn't cost me anything to tinker with it and get it closer to being done, too. Sure is hard to get much done in this sweltering humidity. Don't mind the heat, but god does the humidity get me down!! Here is my plane out on my front lawn. Underneath the wing gap cover is my ballistic parachute. If you look closely, you can see my video game modified joystick, complete with the push-to-talk com radio button and the coolie hat for electric trim. I left the doors off. Kinda seems dumb to have doors on with this heat. Best regards, Herb=85.and thank for asking!! Mike Welch Kolb MkIII CX w/ tubo Suzuki Now=85..got to go out and mow that lawn!!! On Jun 24, 2013, at 9:30 AM, Herb wrote: > > Mike > > Wondering how your Kolb is coming along...Herb > > > On 06/24/2013 08:47 AM, Mike Welch wrote: >> >> Dennis, >> >> Here's a start=85=85 >> >> > > > > > > ________________________________ Message 12 ____________________________________ Time: 09:40:30 AM PST US From: gliderx5@comcast.net Subject: Re: Kolb-List: thrust Lee =C2- I think I had a 68" 3 blade IVO on my MKII with a 503.=C2- Below is a lin k to a video showing takeoff performance. =C2- http://www.youtube.com/watch?v=wAkNU2UcADw Malcolm ----- Original Message ----- From: "Lee" Sent: Monday, June 24, 2013 8:51:56 AM Subject: Kolb-List: thrust Hey everyone, I know this subject probably has been beaten to death but here goes anyway. I have a 503 Rotax with a gearbox and a 60 inch three blade IVO prop. (not sure of the gear ratio. This is on a Twinstar MKII. I have it set to give me 6500 rpm on climb out. Is there a way to get any more thrust out of this with a prop change or am I maxed out with what I have ? I am trying to get off the ground quicker. (it is fine for one person, but uses a lot of runway with 2) Also I am still looking at landing gear issues, would the person that made spring steel gear please contact me and let me know what size, wall thickness, grade material and hardness he used for his. thanks for any responses. Lee, ====================== == ________________________________ Message 13 ____________________________________ Time: 10:24:25 AM PST US Subject: Re: Kolb-List: Mike's Kolb MkIII From: Dennis Rowe Da amm! Nice. Just sayin. Do not archive Dennis "Skid" Rowe Mk3, 690L-70, Leechburg, PA On Jun 24, 2013, at 12:23 PM, Mike Welch wrote: > Hi Herb, > > The plane is coming along quite well, its mostly me that's the hangup. Since I retired a few years ago, finances have been slim pickings, > and the other problem I'm having is a health issue that I am mostly recovering from. > > My wife an I are making plans right now to move to Florida to a retirement village, where I will go back to work and have some pocket money, > and therefore I should be able to afford the flight training and sundry costs of actually flying the plane. > > As far as the plane goes, it virtually finished, with the exception of firing up the engine and dialing everything in. In the meantime, for the last few months > I've been working on my GlaStar. Since I have all the parts on-hand, it doesn't cost me anything to tinker with it and get it closer to being done, too. > > Sure is hard to get much done in this sweltering humidity. Don't mind the heat, but god does the humidity get me down!! > > Here is my plane out on my front lawn. Underneath the wing gap cover is my ballistic parachute. If you look closely, you can see my video game modified > joystick, complete with the push-to-talk com radio button and the coolie hat for electric trim. I left the doors off. Kinda seems dumb to have doors on with this heat. > > Best regards, Herb.and thank for asking!! > > Mike Welch > Kolb MkIII CX w/ tubo Suzuki > > Now..got to go out and mow that lawn!!! > > > > > > > > > On Jun 24, 2013, at 9:30 AM, Herb wrote: > >> >> Mike >> >> Wondering how your Kolb is coming along...Herb >> >> >> On 06/24/2013 08:47 AM, Mike Welch wrote: >>> >>> Dennis, >>> >>> Here's a start > ________________________________ Message 14 ____________________________________ Time: 02:55:54 PM PST US From: Herb Subject: Re: Kolb-List: Mike's Kolb MkIII Absolutely beautiful job..!! Mike Its begging to be flown... Humidity? Florida?? :-) Good luck...Herb On 06/24/2013 11:23 AM, Mike Welch wrote: > Hi Herb, > > The plane is coming along quite well, its mostly me that's the hangup. Since I retired a few years ago, finances have been slim pickings, > and the other problem I'm having is a health issue that I am mostly recovering from. > > My wife an I are making plans right now to move to Florida to a retirement village, where I will go back to work and have some pocket money, > and therefore I should be able to afford the flight training and sundry costs of actually flying the plane. > > As far as the plane goes, it virtually finished, with the exception of firing up the engine and dialing everything in. In the meantime, for the last few months > I've been working on my GlaStar. Since I have all the parts on-hand, it doesn't cost me anything to tinker with it and get it closer to being done, too. > > Sure is hard to get much done in this sweltering humidity. Don't mind the heat, but god does the humidity get me down!! > > Here is my plane out on my front lawn. Underneath the wing gap cover is my ballistic parachute. If you look closely, you can see my video game modified > joystick, complete with the push-to-talk com radio button and the coolie hat for electric trim. I left the doors off. Kinda seems dumb to have doors on with this heat. > > Best regards, Herb.and thank for asking!! > > Mike Welch > Kolb MkIII CX w/ tubo Suzuki > > Now..got to go out and mow that lawn!!! > > > On Jun 24, 2013, at 9:30 AM, Herb wrote: > >> >> Mike >> >> Wondering how your Kolb is coming along...Herb >> >> >> On 06/24/2013 08:47 AM, Mike Welch wrote: >>> >>> Dennis, >>> >>> Here's a start >>> >>> >> >> >> >> >> ________________________________ Message 15 ____________________________________ Time: 02:58:41 PM PST US From: Herb Subject: Re: Kolb-List: Mike's Kolb MkIII How about a pic or two of the engine install...I bought and resold a 4 cyl Geo engine with the high dollar Canadian ign and injection system..Had a belt redrive from a guy out in the mid west...Now out of business.. The engine will run ok with default settings if the same system...Herb On 06/24/2013 11:23 AM, Mike Welch wrote: > Hi Herb, > > The plane is coming along quite well, its mostly me that's the hangup. Since I retired a few years ago, finances have been slim pickings, > and the other problem I'm having is a health issue that I am mostly recovering from. > > My wife an I are making plans right now to move to Florida to a retirement village, where I will go back to work and have some pocket money, > and therefore I should be able to afford the flight training and sundry costs of actually flying the plane. > > As far as the plane goes, it virtually finished, with the exception of firing up the engine and dialing everything in. In the meantime, for the last few months > I've been working on my GlaStar. Since I have all the parts on-hand, it doesn't cost me anything to tinker with it and get it closer to being done, too. > > Sure is hard to get much done in this sweltering humidity. Don't mind the heat, but god does the humidity get me down!! > > Here is my plane out on my front lawn. Underneath the wing gap cover is my ballistic parachute. If you look closely, you can see my video game modified > joystick, complete with the push-to-talk com radio button and the coolie hat for electric trim. I left the doors off. Kinda seems dumb to have doors on with this heat. > > Best regards, Herb.and thank for asking!! > > Mike Welch > Kolb MkIII CX w/ tubo Suzuki > > Now..got to go out and mow that lawn!!! > > > On Jun 24, 2013, at 9:30 AM, Herb wrote: > >> >> Mike >> >> Wondering how your Kolb is coming along...Herb >> >> >> On 06/24/2013 08:47 AM, Mike Welch wrote: >>> >>> Dennis, >>> >>> Here's a start >>> >>> >> >> >> >> >> ________________________________ Message 16 ____________________________________ Time: 06:34:53 PM PST US Subject: Kolb-List: Re: Pre-Purchase Inspection, Firestar From: "Allonsye" Excellent feed back folks - I appreciate it. W&B yes, yes, yes. Some dual -absolutely. Which begs the question, deadstick, this must be a handful. I'm thinking that a ballistic parachute is an absolute necessity. My impression is that of a helicopter - collective down, stick forward, maintain rotor rpm till just above the ground. P. -------- "A good traveller has no fixed plans and is not intent on arriving" Lao Tzu (570-490 BC) Read this topic online here: http://forums.matronics.com/viewtopic.php?p=403361#403361 ________________________________ Message 17 ____________________________________ Time: 06:47:38 PM PST US Subject: Re: Kolb-List: akron flyin of B-29 From: Brad Nation Yea that sound is great, but it's not not just the sound it's the feeling an d vibration. A few years ago I was lucky enough to go to an air show (and get paid for no less while in the NMANG) where there were 8 maybe 10 WW2 airplanes, B-29, B -26parked on the Tarmac in a semi circle square. I was standing in the middl e with all of them running. It was soo cool! You could feel it! It's not nea r the same with jets. There something about those radials. Sent from my iPad Brad Do not archive. On Jun 22, 2013, at 13:19, Gary Aman wrote: > Got to see it up close and hear those 3350's sing. > > > ________________________________ Message 18 ____________________________________ Time: 06:58:05 PM PST US Subject: Re: Kolb-List: Mike's Kolb MkIII From: Brad Nation Nice looking Plane. Sent from my iPad Brad On Jun 24, 2013, at 10:23, Mike Welch wrote: > Hi Herb, > > The plane is coming along quite well, its mostly me that's the hangup. Since I retired a few years ago, finances have been slim pickings, > and the other problem I'm having is a health issue that I am mostly recovering from. > > My wife an I are making plans right now to move to Florida to a retirement village, where I will go back to work and have some pocket money, > and therefore I should be able to afford the flight training and sundry costs of actually flying the plane. > > As far as the plane goes, it virtually finished, with the exception of firing up the engine and dialing everything in. In the meantime, for the last few months > I've been working on my GlaStar. Since I have all the parts on-hand, it doesn't cost me anything to tinker with it and get it closer to being done, too. > > Sure is hard to get much done in this sweltering humidity. Don't mind the heat, but god does the humidity get me down!! > > Here is my plane out on my front lawn. Underneath the wing gap cover is my ballistic parachute. If you look closely, you can see my video game modified > joystick, complete with the push-to-talk com radio button and the coolie hat for electric trim. I left the doors off. Kinda seems dumb to have doors on with this heat. > > Best regards, Herb.and thank for asking!! > > Mike Welch > Kolb MkIII CX w/ tubo Suzuki > > Now..got to go out and mow that lawn!!! > > > > > > > > > On Jun 24, 2013, at 9:30 AM, Herb wrote: > >> >> Mike >> >> Wondering how your Kolb is coming along...Herb >> >> >> On 06/24/2013 08:47 AM, Mike Welch wrote: >>> >>> Dennis, >>> >>> Here's a start > ________________________________ Message 19 ____________________________________ Time: 07:05:19 PM PST US Subject: Re: Kolb-List: Re: Storm Aftermath From: Brad Nation I guess I was too subtle or my sense of humor is a little off. Sent from my iPad Brad On Jun 23, 2013, at 22:30, "Dennis Thate" wrote: > > Hard to please some on this forum......try this, > the the perigee-syzygy moon, or tonight's 'Super Moon' ! > > -------- > Both optimists and pessimists contribute to our society. The optimist invents the airplane and the pessimist the parachute. ~Gil Stern > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=403264#403264 > > > > > Attachments: > > http://forums.matronics.com//files/dscn5060_458.jpg > > > > > > > ________________________________ Message 20 ____________________________________ Time: 07:25:20 PM PST US Subject: Re: Kolb-List: Mike's Kolb MkIII From: Mike Welch Herb, I'll take a few pictures tomorrow. Mike ________________________________ Message 21 ____________________________________ Time: 08:02:09 PM PST US Subject: Kolb-List: Re: Rotax 447 RPM Varies From: "Ducati SS" Unless the composition of paper filters has changed recently their main difference from screen filters is that they will not pass water. Up side - no water in carb, down side- no fuel in carb , and we all know about Ethanol and water. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=403368#403368 ________________________________ Message 22 ____________________________________ Time: 09:19:46 PM PST US Subject: Kolb-List: Re: Firestar II stall speed... From: "Allonsye" Thanks very much for posting this topic AZ. As an aspiring Kolb pilot, I found the discourse exceedingly helpful. Cheers and eternal tailwinds, Paul Arizona Flyer wrote: > Thanks so much guys I really appreciate the input! t41pilot & wakataka; We are flying in a parallel universe with the exact same experiences. My Firestar II is 419lbs and it's pretty loaded with a Rotax 503DC, electric start, EIS, ASI with dual pitot tubes, fuel gauge, Facet aux fuel pump, 3 blade Ivoprop. Being only 148 lbs I really expected a 30mph stall speed. During my short flight with my light weigh I had to turn the trim knob all the way for level flight. Looking back, and not having flown for 11 years, even with my long experience flying these types (Quicksilver Sprint II, Quicksilver Sport, Buccaneer SX amphibian, Rans S-12, Avid Flyer Mark IV, Rans S-7) I should have taken the Firestar to a longer airstrip. zeprep251(at)aol.com; Yes my first flight was a little scary and a few hundred feet up, the desert airstrip I made on my property that seemed plenty long on the ground @530ft well it sure got small looking down from above but I had planned to practice some landings at a slightly longer airstrip just south of my place where I had graded a runway for RC model airplanes, it is about 600ft and more open. That stall drop & 2 bounces on my first landing rattled me a bit and I drifted left off the runway but not much, and it took almost all of the length to stop. 'Get right back on that horse' I took off again and my 2nd landing was good but I still drifted left. I may have started braking at too high a speed but the runway end was coming up fast. Years ago I was very good at tracking my Buccaneer SX, Avid Flyer, and Rans S-7 tail draggers but I remember I took some practice and I was a little surprised at how rusty I was with the Firestar. On the 3rd landing I did pretty well, the 4th landing was perfect. I was exhausted from the last 6 weeks of getting all this work done, and nervous before my 1st flight, so after the 4th landing as I sat there with the engine running I figured I could probably get it into my strip but SAFETY FIRST, don't push it especially when tired so I parked the nose unde! r a tree and tied it down. All this week I have been working on extending my runway and I am up from 530ft to 800ft now. Also I think I'll put on VG's from StolSpeed as a poster here said they brought his Firestar II stall speed down 5mph, from 35mph down to 30mph and says it handles better at slower speeds and also feels safer. Not that the Firestar is unsafe in any way but it would help with a shorter strip and add some piece of mind. That abrupt stall drop still haunts me but I know after a couple more flights and landings I'll be smiling ear to ear :) For what it's worth, my yellow Firestar II was built in 1999 by Gary Aman and I bought it last month from 'Captain' Ron Larson of Port Charlotte Florida. A very good mechanic nicknamed 'Rotax Rick' did a rebuild on the 503 and has greatly helped me with questions & info. The airplane is in good condition and Ron only wanted $7,800 so I bought it. Rotax Rick, Travis & Brian at Kolb have said I got a very good deal at that price. It did cost me $3,075 to have Bill Wilmeroth at Deland Barnstormers transport it from Florida to Arizona and he did a great job. So happy with my purchase. Thanks again for the great input guys :) -------- "A good traveller has no fixed plans and is not intent on arriving" Lao Tzu (570-490 BC) Read this topic online here: http://forums.matronics.com/viewtopic.php?p=403370#403370 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message kolb-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Kolb-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/kolb-list Browse Digests http://www.matronics.com/digest/kolb-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.