---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Fri 08/19/05: 8 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:19 AM - Re: Kolb 1986 Twinstar w Rotax 503 (Denny Rowe) 2. 03:39 AM - Re: Bing Enrichment Piston (Denny Rowe) 3. 04:05 AM - Re: Kolb 1986 Twinstar w Rotax 503 (bryan green) 4. 05:12 AM - Re: Bing Enrichment Piston - spring (Beauford) 5. 06:06 AM - Re: Bing Enrichment Piston (JIM HEFNER) 6. 06:24 AM - Rotax Trade-In (David Nagy) 7. 08:42 AM - Re: Bing Enrichment Piston (Ralph) 8. 08:59 AM - Ultralight Flying Magazine (James Tripp) ________________________________ Message 1 _____________________________________ Time: 03:19:06 AM PST US From: "Denny Rowe" Subject: Re: Kolb-List: Kolb 1986 Twinstar w Rotax 503 --> Kolb-List message posted by: "Denny Rowe" > > When I heard of this a couple weeks ago, I thought they were taking only > Hirth & 2si engines on trade- not Rotaxes. Am I wrong? > > Howard Shackleford > FS II > SC > Yeah Howard, they are also taking older Rotax aircraft engines. The serial number has to be for an aircraft engine and I also think you need to include certain accessories. Check their websight for details. Denny Rowe ________________________________ Message 2 _____________________________________ Time: 03:39:13 AM PST US From: "Denny Rowe" Subject: Re: Kolb-List: Bing Enrichment Piston --> Kolb-List message posted by: "Denny Rowe" Possum, I totally agree with your statement below, I also have been flying on and off since 1982 and also have been riding dirt bikes a lot longer with similar carbs and never had an enricher piston seal fail or seen anyone else who had. Until now. So now you can bet your rear end that I'll be checking my enrichers out real good before I get back to flying again, but I won"t be adding the primer systems, nothing against primers, I just chose enrichers and only need one or the other. Keep it simple as possible. Denny Rowe, Mk-3, 2SI 690L-70, Sport Parasol, old 503SI do not archive Subject: Re: Kolb-List: Bing Enrichment Piston > --> Kolb-List message posted by: possums > > OK ... me and Ralph been flyin these things for a while ... since > 1983 for both of us ...I guess. > BTW I like talking to somebody that's been watching these things > evolve from bicycles with wings. > I've never had a primer, Ralph's never used the "coke" that comes > with the engine. > Both of us have had unbelievable success in starting our respective > engines on the first pull. > Hell ....I'll bet we could blow on the prop real hard and it would > start, right Ralph?? > Belive it or not---I can "hand prop" my 503 DC using the method > discussed before. > And I'm sure Ralph can do the same - > Now .....you "yearlings" ( that would be those of you that have been > flying for a year or so and > ain't dead yet) have to keep in mind that neither of us have had > experience in "both" areas. > So nobody is dead wrong on anything. BOTH OF US are probably right > on. That can happen. > That's what's good about this list, if you don't let it get into the > "I'm right and your wrong" debate. > Just good clean fun - most of the time. ________________________________ Message 3 _____________________________________ Time: 04:05:56 AM PST US From: bryan green Subject: Re: Kolb-List: Kolb 1986 Twinstar w Rotax 503 --> Kolb-List message posted by: bryan green You gotta check the serial # Skack and it must have a gear box. Bryan Green Elgin SC Do not archive Denny Rowe wrote: >--> Kolb-List message posted by: "Denny Rowe" > > > > >>When I heard of this a couple weeks ago, I thought they were taking only >>Hirth & 2si engines on trade- not Rotaxes. Am I wrong? >> >>Howard Shackleford >>FS II >>SC >> >> >> >Yeah Howard, they are also taking older Rotax aircraft engines. >The serial number has to be for an aircraft engine and I also think you need >to include certain accessories. >Check their websight for details. >Denny Rowe > > > > ________________________________ Message 4 _____________________________________ Time: 05:12:12 AM PST US From: "Beauford" Subject: Kolb-List: Re: Bing Enrichment Piston - spring --> Kolb-List message posted by: "Beauford" Brother Possum... IMHO, the line you sent below contains the smoking Rotax....The spring pushing down on that piston is strong indeed... I think it is the very strength of that spring, pressing that rubber insert down against the metal valve seat which causes the rubber to retreat up into the body of the piston over time...four years in my case. The famous 2-cycle vibration probably compounds the impact of the seat as it deforms the rubber... It all adds up to a "must inspect" item for me at least annually, and possibly even more frequently than that. I intend to have two canaries in this little coal mine... a change in plug color or deposits, and an unexplained increase in fuel burn over time. As I think back, both birds died, but 'ol Beauford just kept diggin' coal. Beauford FF #076 ----- Original Message ----- > --> Kolb-List message posted by: possums > > At 09:06 AM 8/18/2005, you wrote:>> There was nothing said about the enrichment (choke) piston. The > springs that push it down or shut off the > fuel are very strong. I don't think that would be a problem unless > your cables wouldn't let it seat. > > > > > ________________________________ Message 5 _____________________________________ Time: 06:06:26 AM PST US From: "JIM HEFNER" Subject: Re: Kolb-List: Bing Enrichment Piston --> Kolb-List message posted by: "JIM HEFNER" Well said and right-on on all points Possums. Both methods work well and rarely have problems like Beauford experienced (thank God!), so whatever works well, stick with it! That is indeed what's good about this list.... people have options based on lots of experience. Thanks, Jim Tucson, AZ FF#022 447 DO NOT ARCHIVE Time: 11:24:43 PM PST US From: possums > Subject: Re: Kolb-List: Bing Enrichment Piston --> Kolb-List message posted by: possums > OK ... me and Ralph been flyin these things for a while ... since 1983 for both of us ...I guess. BTW I like talking to somebody that's been watching these things evolve from bicycles with wings. I've never had a primer, Ralph's never used the "coke" that comes with the engine. Both of us have had unbelievable success in starting our respective engines on the first pull. So nobody is dead wrong on anything. BOTH OF US are probably right on. That can happen. That's what's good about this list, if you don't let it get into the "I'm right and your wrong" debate. Just good clean fun - most of the time. ________________________________ Message 6 _____________________________________ Time: 06:24:41 AM PST US From: David Nagy Subject: Kolb-List: Rotax Trade-In --> Kolb-List message posted by: David Nagy To quote from August 2005 EAA Sport Pilot Magazine, "US service centers are now offering a limited time trade in program for all qualified Rotax,Hirth and 2SI engines with gearboxes. Qualifying engines can be traded for new Rotax 503 or 582 engines with either B ,C or E gearboxes." Offer ends Aug 31,2005. I called LEAF at 1 262 763 4087 and they would sell the 503 DCDI with B box(w/o Electric start) for around $3500 with the trade in. ________________________________ Message 7 _____________________________________ Time: 08:42:22 AM PST US From: "Ralph" Subject: Re: Kolb-List: Bing Enrichment Piston --> Kolb-List message posted by: "Ralph" I agree with 'ol Possum, whatever works for you is the way to go. My first winter fly'in this thing took 35 pulls on the starter rope to get it going. After setting it up on the frozen lake and not able to get the thing started was when I decide to get the primer pump. Then I realized that rubber choke washer could cause problems opening and closing on every flight, or inadvertently leaving it open a little, so I didn't miss having the choke. Ralph, Original Firestar, 18 years flying it -- possums wrote: --> Kolb-List message posted by: possums OK ... me and Ralph been flyin these things for a while ... since 1983 for both of us ...I guess. BTW I like talking to somebody that's been watching these things evolve from bicycles with wings. I've never had a primer, Ralph's never used the "coke" that comes with the engine. Both of us have had unbelievable success in starting our respective engines on the first pull. Hell ....I'll bet we could blow on the prop real hard and it would start, right Ralph?? Belive it or not---I can "hand prop" my 503 DC using the method discussed before. And I'm sure Ralph can do the same - Now .....you "yearlings" ( that would be those of you that have been flying for a year or so and ain't dead yet) have to keep in mind that neither of us have had experience in "both" areas. So nobody is dead wrong on anything. BOTH OF US are probably right on. That can happen. That's what's good about this list, if you don't let it get into the "I'm right and your wrong" debate. Just good clean fun - most of the time. ------------------------- >I saw this post. The amount of air that is leaked into the carb, due >to a faulty primer, does not amount to much. Look at the size of the >primer nipple in the carb. Now compare that with the size of the air >cleaner. The primer on mine is fed into a nipple on the side of the >intake manifold, so if there was a leaking problem, it would be more >severe than one fed into the carburetor body. By the way, always >cable tie the fuel line around the nipple (I'm using cable ties now >instead of those plastic rachet clamps. They work so much better >with no leaking). >The primer does not leak raw fuel into the carb, whereas a faulty >enrichner can -snip- I have not used the choke (enrichner) in years >and have not had a carbon problem. I did have the usual carbon >problem that everyone else has when I used the choke for starting it. >Less carbon buildup, in a 2-stroke, means longer engine life and >reliability. I prefer it this way. >Ralph, Original Firestar, 18 years flying it ---------------------------------------------------- Try taking off the capped nipple on the carb and see what happens. ----------------------------------------------------- That part (enrichment choke piston) is a "One piece" cylinder with a "rubber bottom".......I can't believe that it is defective very often. It either works or it doesn't - "Except for yours, Beauford" . Both mine still look the same after 650 hrs. I've got two of them so I guess that would equate to 1300 hours using the recent thread of the 2 engines vs. 1 engine theory. I rebuilt both my carburetors about 14 months ago and replaced "everything" that was indicated in the rebuild. There was nothing said about the enrichment (choke) piston. The springs that push it down or shut off the fuel are very strong. I don't think that would be a problem unless your cables wouldn't let it seat. I agree with 'ol Possum, whatever works for you is the way to go. My first winter fly'in this thing took 35 pulls on the starter rope to get it going. After setting it up on the frozen lake and not able to get the thing startedwas when I decide to get the primer pump. Then I realized that rubber choke washer could cause problems opening and closing on every flight, or inadvertently leaving it open a little, so I didn't misshavingthe choke. Ralph, Original Firestar, 18 years flying it --possumswrote: --Kolb-Listmessagepostedby:possums OK...meandRalphbeenflyinthesethingsforawhile...since 1983forbothofus...Iguess. BTWIliketalkingtosomebodythat'sbeenwatchingthesethings evolvefrombicycleswithwings. I'veneverhadaprimer,Ralph'sneverusedthe"coke"thatcomes withtheengine. Bothofushavehadunbelievablesuccessinstartingourrespective enginesonthefirstpull. Hell....I'llbetwe  ;couldblowontheproprealhardanditwould start,rightRalph?? Beliveitornot---Ican"handprop"my503DCusingthemethod discussedbefore. AndI'msureRalphcandothesame- Now.....you"yearlings"(thatwouldbethoseofyouthathavebeen flyingforayearorsoand ain'tdeadyet)havetokeepinmindthatneitherofushavehad experiencein"both"areas. Sonobodyisdeadwrongonanything.BOTHOFUSareprobablyright on.Thatcanhappen. That'swhat'sgoodaboutthis& nbsp;list,ifyoudon'tletitgetintothe "I'mrightandyourwrong"debate. Justgoodcleanfun-mostofthetime. ------------------------- Isawthispost.Theamountofairthatisleakedintothecarb,due toafaultyprimer,doesnotamounttomuch.Lookatthesizeofthe primernippleinthecarb.Nowcomparethatwiththesizeoftheair cleaner.Theprimeronmineisfedintoanippleonthesideofthe intakemanifold,soiftherewasaleakingproblem,itwould& nbsp;bemore severethanonefedintothecarburetorbody.Bytheway,always cabletiethefuellinearoundthenipple(I'musingcabletiesnow insteadofthoseplasticrachetclamps.Theyworksomuchbetter withnoleaking). Theprimerdoesnotleakrawfuelintothecarb,whereasafaulty enrichnercan-snip-Ihavenotusedthechoke(enrichner)inyears andhavenothadacarbonproblem.Ididhavetheusualcarbon problemthateveryoneelsehaswhenIusedthechokefor&nbs p;startingit. Lesscarbonbuildup,ina2-stroke,meanslongerenginelifeand reliability.Ipreferitthisway. Ralph,OriginalFirestar,18yearsflyingit ---------------------------------------------------- Trytakingoffthecappednippleonthecarbandseewhathappens. ----------------------------------------------------- Thatpart(enrichmentchokepiston)isa"Onepiece"cylinderwitha "rubberbottom".......Ican'tbelievethatit isdefectiveveryoften.Iteitherworksoritdoesn't-"Exceptfor yours,Beauford".Bothminestilllookthesameaft er650hrs. I'vegottwoofthemsoIguessthatwouldequateto1300hoursusing therecentthreadofthe2enginesvs.1enginetheory. Irebuiltbothmycarburetorsabout14monthsagoandreplaced "everything"thatwasindicatedintherebuild. Therewasnothingsaidabouttheenrichment(choke)piston.The springsthatpushitdownorshutoffthe fuelareverystrong.Idon'tthinkthatwouldbeaproblemunless yourcableswouldn'tletitseat. nbsp;-TheKolb-ListEmailForum- ________________________________ Message 8 _____________________________________ Time: 08:59:39 AM PST US From: "James Tripp" Subject: Kolb-List: Ultralight Flying Magazine --> Kolb-List message posted by: "James Tripp" I have approximately 100 issues of Ultralight Flying that I need to get rid of but I really don't want to throw them in the trash. They're a great resource for anyone who is new to ultralight flying or looking to get into the sport and want to learn as much as possible before taking the plunge. I'll give them anyone who is willing to come get them or willing to pay the UPS charges to ship them. James Tripp, FSII Millbrook AL