---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Sat 02/19/11: 7 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:14 AM - Re: Low voltage output from the Ducatic regulator (Brian Ellis) 2. 05:11 AM - Re: Low regulator output voltage (MacDonald Doug) 3. 06:50 AM - Re: Low regulator output voltage (Roger Lee) 4. 07:32 AM - Re: Low voltage output from the Ducatic regulator (Roger Lee) 5. 11:07 AM - E15 (Thom Riddle) 6. 12:11 PM - Re: Re: How to mount a tire the easy way. (bjones@dmv.com) 7. 12:35 PM - Re: Re: How to mount a tire the easy way. (Pete Christensen) ________________________________ Message 1 _____________________________________ Time: 04:14:55 AM PST US From: Brian Ellis Subject: Re: RotaxEngines-List: Low voltage output from the Ducatic regulator hi=0A=0Aon our stratomaster the voltage readout is 13.8 - 14.2 (occasionall y peak but =0Afalls back)=0A=0Ai have a crowbar curcuit-to monitor the ra il voltage so when it reaches 16v it =0Adrops a relay that disconnects the supply from the engine to the regulator and =0Athe on-board electrics then run on the aircraft batt.--in other words high volt =0Aprotection.- =0A=0A=0Aconsidering the amount of electrical stuff now on-board it really needs =0Aprotecting as burnt out stuff is v expensive to repair.-=0A=0Ai am trying to locate-male and female-plugs, that will allow me to interc ept the =0Aregulator wiring at the existing plug and patch all wires across , except the- =0Aengine power supply (the 2 yellows) to the regulator, wh ich i can-then wire-via =0Athe relay break contacts.=0A=0Aare-there a ny such plugs about?=0A=0Ais there a similar circuit on offer anywhere that can be patched in, save me =0Asome work.=0A=0Acheers=0A=0ABrian =0A=0AG-CG EZ=0A=0A=0A=0A=0A________________________________=0AFrom: Roger Lee =0ATo: rotaxengines-list@matronics.com=0ASent: Sat, February 19, 2011 2:02:12 AM=0ASubject: RotaxEngines-List: Low voltage output from t ee" =0A=0AHow many of you only have about 13.1V - 13.3 V charge output to the battery? (I =0Ahave a fix if enough people have an i ssue)=0A=0AHow many have at least 13.8V+?=0A=0A--------=0ARoger Lee=0ATucso n, Az.=0ALight Sport Repairman - Maintenance Rated=0ARotax Repair Center=0A Home 520-574-1080- TRY HOME FIRST=0ACell 520-349-7056=0A=0A=0A=0A=0ARead this topic online here:=0A=0Ahttp://forums.matronics.com/viewtopic.php?p= - - - - - - - - - - - - -Matt Dralle, List Admin. ======0A=0A=0A ________________________________ Message 2 _____________________________________ Time: 05:11:08 AM PST US From: MacDonald Doug Subject: RotaxEngines-List: Re: Low regulator output voltage The good news is Roger that the common failure mode for diodes is a short rather than an open. If the diode were to fail, it would most likely act as though the original wire was back in place. Doug MacDonald CH-701 C-GBQX NW Ontario, Canada > Time: 06:00:24 PM PST US > Subject: RotaxEngines-List: Low regulator output voltage > From: "Roger Lee" > What is the down side? If the diode were to fail some day > then your voltage would > climb to 15 volts and be in an over charge state at the > battery. > Roger Lee > Tucson, Az. > Light Sport Repairman - Maintenance Rated > Rotax Repair Center > Home 520-574-1080 TRY HOME FIRST > Cell 520-349-7056 ________________________________ Message 3 _____________________________________ Time: 06:50:36 AM PST US Subject: RotaxEngines-List: Re: Low regulator output voltage From: "Roger Lee" Hi Doug, I did not know that. Thanks -------- Roger Lee Tucson, Az. Light Sport Repairman - Maintenance Rated Rotax Repair Center Home 520-574-1080 TRY HOME FIRST Cell 520-349-7056 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=331510#331510 ________________________________ Message 4 _____________________________________ Time: 07:32:34 AM PST US Subject: RotaxEngines-List: Re: Low voltage output from the Ducatic regulator From: "Roger Lee" Hi All, One of our electrical engineer members came up with this and if he wants to step forward for the credit he can. Have you a low voltage output around 13.1V - 13.3V from the Rotax Ducati regulator? Many have for years. Our battery never gets to a full charge as it needs 13.9V - 14.2V. My voltage on my system is only 13.1V - 13.2V normally. When I turn on my landing light my voltage drops to 11.8V on my Dynon at low rpms whether at idle or coming in for landing, plus the light is not near as bright. There is a fix, but you technically need an LOA if you have an SLSA from the aircraft Mfg. Here is a picture below. You use a 1 amp 200V diode which is available at any electronics store. The number for the diode is 1N4001 thru 1N4007. If you only need only a .4V increase then a 1N5817 diode 1 amp 20V. The band on one end will face up. It goes between the Regulator Rectifier "R" terminal slot and the "Charge" terminal slot. There is a small white wire already between these two terminals and this is what you are replacing and then that small wire needs to be clipped in half. This will raise your output charging voltage .8 volts or .4V depending on the diode used. When I tried this mod it went from 13.2V to 14.1V. When I turn on my running lights and all other electrical (other than the landing light) the voltage drops .1V - .2V. When I turn on the landing light it drops to 13.2V, but at least it doesn't drop to 11.7V any more. We all know most battery's require 13.9VV - 14.2V to charge fully and that's one reason for the right type of charger in the hanger. When you have a battery that only gets charged 60% - 70% (13.2V) things don't work as well. Lately my electric flaps were running slow and once in a while blinked for a few seconds. Now they are quick and crisp again. My plane starts up much faster and easier with a fully charged battery. You have 2 options for a connection. Solder the diode in place or use something like a Molex connector crimped on each end of the diode. Use a wire tie to secure this diode or jumper wire in place to help protect against any vibration. What is the down side? If the diode were to fail some day then your voltage would climb to 15 volts and be in an over charge state at the battery. The quick and easy fix is to manage voltage until you land by pulling the generator breaker and let the battery discharge for a while then turn it back on for a while until you land. If it were me I would use the crimp method on the diode and make up a 2.5" plain wire jumper with Molex connector on each end. In an emergency, all you would have to do is unplug the diode and plug the jumper wire in place then you are right back to a stock set up. Keep the little jumper in your tool kit. I'll try to take a picture of the jumper wire and post it here this weekend. p.s. Since electrical engineering is not my expertise by any stretch of the imagination I was just informed that if the diode were to fail the system would go back to stock on its own through the diode wire. -------- Roger Lee Tucson, Az. Light Sport Repairman - Maintenance Rated Rotax Repair Center Home 520-574-1080 TRY HOME FIRST Cell 520-349-7056 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=331515#331515 Attachments: http://forums.matronics.com//files/ducati_2_775.jpg ________________________________ Message 5 _____________________________________ Time: 11:07:47 AM PST US Subject: RotaxEngines-List: E15 From: "Thom Riddle" To USA Rotax operators: No current worries concerning our auto-gas increasing to 15% ethanol. http://www.detnews.com/article/20110219/AUTO01/102190386/1148/House-votes-to-block-E15-from-gas-pumps -------- Thom Riddle Buffalo, NY (9G0) Kolb Slingshot SS-021 Jabiru 2200A #1574 Tennessee Prop 64x32 Don't accept your dog's admiration as conclusive evidence that you are wonderful. Ann Landers Read this topic online here: http://forums.matronics.com/viewtopic.php?p=331548#331548 ________________________________ Message 6 _____________________________________ Time: 12:11:19 PM PST US Subject: Re: RotaxEngines-List: Re: How to mount a tire the easy way. From: bjones@dmv.com I gave up trying to demount two really old tires on roughly 1991 vintage Kitfox (Douglas) wheels and resorted to cutting a section of the tire down to the wheel rim then cutting thru the metal wires in the bead of the tire with a carbide bur in a dremel tool. The wires in the bead made a serious "pop" as I cut thru the last one. Being a retired dentist this seemed prettly easy to do without damaging the aluminum wheel but it ruined the carbide bur. BJ Kitfox IV N143K PA 39 N626NR > > > That is clever. > > I have had tires so difficult to remove from the rim half that my 280 lb > mechanic partner standing on the tire could not break the bead. So we > built a tool using pieces of 5/8" plywood with a circular hole just larger > than the wheel rim diameter plus a piece of all-thread, plus clamp bars > and nuts to squeeze the tire off the rim. Works well but this seems a bit > simpler. > > -------- > Thom Riddle > Buffalo, NY (9G0) > Kolb Slingshot SS-021 > Jabiru 2200A #1574 > Tennessee Prop 64x32 > > > Don't accept your dog's admiration as conclusive evidence that you are > wonderful. > Ann Landers > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=331397#331397 > > ________________________________ Message 7 _____________________________________ Time: 12:35:03 PM PST US From: Pete Christensen Subject: Re: RotaxEngines-List: Re: How to mount a tire the easy way. Here's how I dismounted some difficult tires. I removed the wheel and tire from the plane. Then I took them to a tire shop. That was so easy. (I just can't help being a smart ass.) Pete Leander Tx Kitfox III, 912, On 2/19/2011 2:01 PM, bjones@dmv.com wrote: > --> RotaxEngines-List message posted by: bjones@dmv.com > > I gave up trying to demount two really old tires on roughly 1991 vintage > Kitfox (Douglas) wheels and resorted to cutting a section of the tire down > to the wheel rim then cutting thru the metal wires in the bead of the tire > with a carbide bur in a dremel tool. > > The wires in the bead made a serious "pop" as I cut thru the last one. > Being a retired dentist this seemed prettly easy to do without damaging > the aluminum wheel but it ruined the carbide bur. > > BJ > Kitfox IV N143K > PA 39 N626NR > >> --> RotaxEngines-List message posted by: "Thom Riddle" >> >> >> That is clever. >> >> I have had tires so difficult to remove from the rim half that my 280 lb >> mechanic partner standing on the tire could not break the bead. So we >> built a tool using pieces of 5/8" plywood with a circular hole just larger >> than the wheel rim diameter plus a piece of all-thread, plus clamp bars >> and nuts to squeeze the tire off the rim. Works well but this seems a bit >> simpler. >> >> -------- >> Thom Riddle >> Buffalo, NY (9G0) >> Kolb Slingshot SS-021 >> Jabiru 2200A #1574 >> Tennessee Prop 64x32 >> >> >> Don't accept your dog's admiration as conclusive evidence that you are >> wonderful. >> Ann Landers >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=331397#331397 >> >> >> >> >> >> >> >> >> >> >> > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rotaxengines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RotaxEngines-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/rotaxengines-list Browse Digests http://www.matronics.com/digest/rotaxengines-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.