---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Wed 04/21/10: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:48 AM - Re: Firefly slide show (Richard Girard) 2. 08:45 AM - Re: Firefly slide show (Jack B. Hart) 3. 05:36 PM - NEED MORE BRAKING POWER? (Rick Lewis) 4. 06:21 PM - Re: NEED MORE BRAKING POWER? (Ellery Batchelder Jr) 5. 06:53 PM - Re: NEED MORE BRAKING POWER? (Mike Welch) 6. 09:41 PM - Best Kolb video... (Nick Cassara) ________________________________ Message 1 _____________________________________ Time: 05:48:54 AM PST US Subject: Re: Kolb-List: Firefly slide show From: Richard Girard Jack, I had many of the same problems with the Mikuni pumper carb on a Zenoah engine. In my case, the problem was a very small tear in the pump diaphragm. The solution was real simple, dump the pumper carb (Mikuni had stopped making the carb and repair kits for it) and replace with a conventional slide carb and separate fuel pump. Started first pull and never had another problem. Rick Girard On Tue, Apr 20, 2010 at 7:58 PM, Jack B. Hart wrote: > > Date: Tue, 20 Apr 2010 05:28:05 -0700 (PDT) > From: william sullivan > > Jack- How are you doing on the new engine? Haven't heard from you lately. > > Bill, > > Initially thought that the engine quit on the maiden flight due to > electrical problems. Did not like the way I had mounted the voltage > regulator and magneto kill switch. The regulator leads wiggled loose and > shorted. Reworked the whole works to come up with a better mounting and in > doing so saved a little weight. Also insulated the lead clips with shrink > tubing and then wire tied them in a way to prevent the clips from ever > coming loose. Also, to get the engine up to speed I purchased new set of > 54 > inch IVO ultralight blades. > > Mounted the whole works and tried starting the engine. Found that the > engine would run a burst after the engine was primed and that was it. I > took the carburetor off and looked at the lower end to see if the metering > needle valve was stuck, and replaced the regulator diaphragm and the pump > parts. After this I have been able to get the engine to run, but now I am > having trouble with the engine loading up on fuel upon closing the throttle > after a high rpm run on the high speed jet. Upon cranking the engine > without priming, the engine floods. This indicates that the metering > needle > is not seating, or very high flow resistance through the air filter. > > Tomorrow, I will remove the air cleaner and see if the flooding problem > continues. If so, I will remove the carburetor and blow out the fuel > galleys up to and through the metering needle seat. And the try again. > > The trials and tribulations of changing engines and learning about the > Tillotson carburetor. > > Jack B. Hart FF004 > Winchester, IN > > ________________________________ Message 2 _____________________________________ Time: 08:45:14 AM PST US From: "Jack B. Hart" Subject: Re: Kolb-List: Firefly slide show From: Richard Girard > Jack, I had many of the same problems with the Mikuni pumper carb on a Zenoah engine. In my case, the problem was a very small tear in the pump diaphragm. The solution was real simple, dump the pumper carb (Mikuni had stopped making the carb and repair kits for it) and replace with a conventional slide carb and separate fuel pump. Started first pull and never had another problem. > Rick, Supposedly there are several engines out there using this carburetor. I am still on the lower end of the learning curve, so I will keep working with for a while to see if I can master it. Jack B. Hart FF004 Winchester, IN ________________________________ Message 3 _____________________________________ Time: 05:36:21 PM PST US Subject: Kolb-List: NEED MORE BRAKING POWER? From: "Rick Lewis" I finally got back to working on the brakes. The c-90 brake calipers now being used on the MK-3x and others require a brake pedal ratio of 4:1 to have really good braking power. The pedals being used on our Kolbs have a ratio of 1:1 or less, according to Matco. If you don't seem to have good braking power, this is probably your problem. I have been thinking about this for a while, trying to find an easy way to modify what we already have. The picture should answer any questions you may have to modify your existing pedals. This arrangement should give you a ratio of 3:1. You could improve even more on this by raising the top of the pedal another inch giving you the full 4:1 ratio called out for the the instructions. Rick Lewis -------- Rick Lewis (VW Watercooled Engine) Read this topic online here: http://forums.matronics.com/viewtopic.php?p=295180#295180 Attachments: http://forums.matronics.com//files/pic00026_247.jpg ________________________________ Message 4 _____________________________________ Time: 06:21:46 PM PST US Subject: Re: Kolb-List: NEED MORE BRAKING POWER? From: Ellery Batchelder Jr could you press one of the pedals in a pic to show how this system works from what I see in the pic all it would give you is more dead linkeage but I could be wrong working to much to get any flying in Ellery Batchelder Jr. -----Original Message----- From: Rick Lewis Sent: Wed, Apr 21, 2010 8:35 pm Subject: Kolb-List: NEED MORE BRAKING POWER? I finally got back to working on the brakes. The c-90 brake calipers now being sed on the MK-3x and others require a brake pedal ratio of 4:1 to have rea lly ood braking power. The pedals being used on our Kolbs have a ratio of 1:1 or ess, according to Matco. If you don't seem to have good braking power, th is is robably your problem. I have been thinking about this for a while, trying to ind an easy way to modify what we already have. The picture should answer any uestions you may have to modify your existing pedals. This arrangement sh ould ive you a ratio of 3:1. You could improve even more on this by raising th e top f the pedal another inch giving you the full 4:1 ratio called out for the the nstructions. Rick Lewis -------- ick Lewis (VW Watercooled Engine) ead this topic online here: http://forums.matronics.com/viewtopic.php?p=295180#295180 ttachments: http://forums.matronics.com//files/pic00026_247.jpg -======================== ======================== =========== -= - The Kolb-List Email Forum - -= Use the Matronics List Features Navigator to browse -= the many List utilities such as List Un/Subscription, -= Archive Search & Download, 7-Day Browse, Chat, FAQ, -= Photoshare, and much much more: - -= --> http://www.matronics.com/Navigator?Kolb-List - -======================== ======================== =========== -= - MATRONICS WEB FORUMS - -= Same great content also available via the Web Forums! - -= --> http://forums.matronics.com - -======================== ======================== =========== -= - List Contribution Web Site - -= Thank you for your generous support! -= -Matt Dralle, List Admin. -= --> http://www.matronics.com/contribution -======================== ======================== =========== ________________________________ Message 5 _____________________________________ Time: 06:53:09 PM PST US From: Mike Welch Subject: RE: Kolb-List: NEED MORE BRAKING POWER? Yeah=2C Ellery=2C that's what I thought=2C too. It must work better in rea l life than it looks like in the picture. I'm going to be installing my brake cylinders and fluid tomorrow! Mike Welch MkIII CX Subject: Re: Kolb-List: NEED MORE BRAKING POWER? From: elleryweld@aol.com could you press one of the pedals in a pic to show how this system works f rom what I see in the pic all it would give you is more dead linkeage but I could be wrong working to much to get any flying in Ellery Batchelder Jr. -----Original Message----- From: Rick Lewis Sent: Wed=2C Apr 21=2C 2010 8:35 pm Subject: Kolb-List: NEED MORE BRAKING POWER? I finally got back to working on the brakes. The c-90 brake calipers now b eing used on the MK-3x and others require a brake pedal ratio of 4:1 to have rea lly good braking power. The pedals being used on our Kolbs have a ratio of 1:1 or less=2C according to Matco. If you don't seem to have good braking power =2C this is probably your problem. I have been thinking about this for a while=2C tryi ng to find an easy way to modify what we already have. The picture should answer any questions you may have to modify your existing pedals. This arrangement sh ould give you a ratio of 3:1. You could improve even more on this by raising th e top of the pedal another inch giving you the full 4:1 ratio called out for the the instructions. Rick Lewis -------- Rick Lewis (VW Watercooled Engine) Read this topic online here: http://forums.matronics.com/viewtopic.php?p=295180#295180 Attachments: http://forums.matronics.com//files/pic00026_247.jpg rget=_blank>http://www.matronics.com/Navigator?Kolb-List tp://forums.matronics.com _blank>http://www.matronics.com/contribution _________________________________________________________________ The New Busy is not the too busy. Combine all your e-mail accounts with Hot mail. http://www.windowslive.com/campaign/thenewbusy?tile=multiaccount&ocid=P ID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_4 ________________________________ Message 6 _____________________________________ Time: 09:41:33 PM PST US From: "Nick Cassara" Subject: Kolb-List: Best Kolb video... Larry, My vote for best Kolb video goes to Pillars of Rome. I watch everything you post and am impressed with all your productions. Keep them coming! Thanks, Nick Cassara Palmer, Alaska ------------------------------------------------------------------------------------- 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.