---------------------------------------------------------- RV10-List Digest Archive --- Total Messages Posted Mon 03/13/17: 20 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:28 AM - Impulse Coupler (Vernon Franklin) 2. 08:36 AM - Re: Impulse Coupler (John Miller) 3. 08:46 AM - Re: Impulse Coupler (Lenny Iszak) 4. 08:55 AM - Re: Impulse Coupler (Gary Specketer) 5. 09:05 AM - Re: Impulse Coupler (Jesse Saint) 6. 09:18 AM - Re: Impulse Coupler (Lenny Iszak) 7. 09:24 AM - Re: Re: Impulse Coupler (Kelly McMullen) 8. 09:34 AM - Re: Re: Impulse Coupler (Danny Riggs) 9. 09:43 AM - Re: Re: Impulse Coupler (Tim Olson) 10. 10:18 AM - Re: Impulse Coupler (Lenny Iszak) 11. 02:50 PM - Re: Re: Impulse Coupler (John Miller) 12. 04:32 PM - Re: Impulse Coupler (Bob Turner) 13. 04:44 PM - Re: Re: Impulse Coupler (Duane Wilson) 14. 05:23 PM - Re: Impulse Coupler (Bob Turner) 15. 05:31 PM - Re: Re: Impulse Coupler (gulf) 16. 06:02 PM - Re: Re: Impulse Coupler (Kelly McMullen) 17. 06:03 PM - Re: Re: Impulse Coupler (Jesse Saint) 18. 06:08 PM - Re: Re: Impulse Coupler (Jesse Saint) 19. 06:34 PM - Re: Re: Impulse Coupler (Rob Kermanj) 20. 06:57 PM - Vans shipped D4A5 engine (Doc) ________________________________ Message 1 _____________________________________ Time: 08:28:23 AM PST US From: Vernon Franklin Subject: RV10-List: Impulse Coupler I am having a hard time identifying the mag that has the impulse coupler. On my Cherokee, I get a very distinct click when turning the prop over, it is very easy to identify. But with this 540, I am not getting anything. It is a stock D4A5 with factory installed slicks purchased through Vans. Is there a chance that it shipped without a coupler? If so, is that going to be an issue, and should I purchase one? Do I still ground out the right mag on startup in such a scenario? Thanks in advance! -- Vernon Franklin ________________________________ Message 2 _____________________________________ Time: 08:36:54 AM PST US From: John Miller Subject: Re: RV10-List: Impulse Coupler It should be on your left mag, and you should be able to hear it by pulling the prop through (with a plug out on each cylinder to make it easier to pull through). Make sure your mag switch is OFF! > On Mar 13, 2017, at 10:27 AM, Vernon Franklin wrote: > > I am having a hard time identifying the mag that has the impulse coupler. On my Cherokee, I get a very distinct click when turning the prop over, it is very easy to identify. But with this 540, I am not getting anything. > > It is a stock D4A5 with factory installed slicks purchased through Vans. > Is there a chance that it shipped without a coupler? If so, is that going to be an issue, and should I purchase one? Do I still ground out the right mag on startup in such a scenario? > > Thanks in advance! > > > -- > Vernon Franklin ________________________________ Message 3 _____________________________________ Time: 08:46:19 AM PST US Subject: RV10-List: Re: Impulse Coupler From: "Lenny Iszak" Vernon, Mine shipped with a retard breaker mag on the left. You'll need a Slick Start module for starting, and wire using their diagrams. -------- Lenny N311LZ Read this topic online here: http://forums.matronics.com/viewtopic.php?p=467239#467239 ________________________________ Message 4 _____________________________________ Time: 08:55:50 AM PST US From: Gary Specketer Subject: Re: RV10-List: Impulse Coupler The mag with impulse coupler will have a spacer between the accessory case and the mag. Yes you need to ground out the non impulse mag for starting. Gary Get Outlook for iOS ________________________________ From: owner-rv10-list-server@matronics.com on behalf of Vernon Franklin Sent: Monday, March 13, 2017 11:27:46 AM Subject: RV10-List: Impulse Coupler I am having a hard time identifying the mag that has the impulse coupler. On my Cherokee, I get a very distinct click when turning the prop over, it is very easy to identify. But with this 540, I am not getting anything. It is a stock D4A5 with factory installed slicks purchased through Vans. Is there a chance that it shipped without a coupler? If so, is that going to be an issue, and should I purchase one? Do I still ground out the right mag on startup in such a scenario? Thanks in advance! -- Vernon Franklin ________________________________ Message 5 _____________________________________ Time: 09:05:06 AM PST US Subject: Re: RV10-List: Impulse Coupler From: Jesse Saint The stock engine from Vans does not have an impulse coupled mag. The left is a retard breaker mag. You need a slick start. Yes, you need to ground the right mag during start with the Slick Start. Jesse Saint Saint Aviation, Inc. jesse@saintaviation.com C: 352-427-0285 F: 815-377-3694 > On Mar 13, 2017, at 11:27 AM, Vernon Franklin wrote: > > I am having a hard time identifying the mag that has the impulse coupler. On my Cherokee, I get a very distinct click when turning the prop over, it is very easy to identify. But with this 540, I am not getting anything. > > It is a stock D4A5 with factory installed slicks purchased through Vans. > Is there a chance that it shipped without a coupler? If so, is that going to be an issue, and should I purchase one? Do I still ground out the right mag on startup in such a scenario? > > Thanks in advance! > > > -- > Vernon Franklin ________________________________ Message 6 _____________________________________ Time: 09:18:44 AM PST US Subject: RV10-List: Re: Impulse Coupler From: "Lenny Iszak" According to this document from Lycoming, there are no approved impulse mags for the D4A5. https://www.lycoming.com/sites/default/files/SI1443L%20Approved%20Slick%20Magnetos.pdf vernon.franklin(at)gmail. wrote: > I am having a hard time identifying the mag that has the impulse coupler. On my Cherokee, I get a very distinct click when turning the prop over, it is very easy to identify. But with this 540, I am not getting anything. > > > It is a stock D4A5 with factory installed slicks purchased through Vans. > Is there a chance that it shipped without a coupler? If so, is that going to be an issue, and should I purchase one? Do I still ground out the right mag on startup in such a scenario? > > > Thanks in advance! > > > -- > Vernon Franklin -------- Lenny N311LZ Read this topic online here: http://forums.matronics.com/viewtopic.php?p=467242#467242 ________________________________ Message 7 _____________________________________ Time: 09:24:30 AM PST US Subject: Re: RV10-List: Re: Impulse Coupler From: Kelly McMullen Could investigate swap of your Slick mags for overhauled Bendix S-1200 mags with impulse coupling. Makes it a D4B5 with much better high altitude performance. The S-1200 are the best mags ever made. My rebuilder offered me new Slick or overhauled S-6 or S-1200 mags all at same price. I took the 1200s. A little tight fit with oil breather tube, otherwise fine. On 3/13/2017 9:18 AM, Lenny Iszak wrote: > > According to this document from Lycoming, there are no approved impulse mags for the D4A5. > > https://www.lycoming.com/sites/default/files/SI1443L%20Approved%20Slick%20Magnetos.pdf > > > vernon.franklin(at)gmail. wrote: >> I am having a hard time identifying the mag that has the impulse coupler. On my Cherokee, I get a very distinct click when turning the prop over, it is very easy to identify. But with this 540, I am not getting anything. >> >> >> It is a stock D4A5 with factory installed slicks purchased through Vans. >> Is there a chance that it shipped without a coupler? If so, is that going to be an issue, and should I purchase one? Do I still ground out the right mag on startup in such a scenario? >> >> >> Thanks in advance! >> >> >> -- >> Vernon Franklin > > > -------- > Lenny > N311LZ > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=467242#467242 > > ________________________________ Message 8 _____________________________________ Time: 09:34:29 AM PST US From: Danny Riggs Subject: Re: RV10-List: Re: Impulse Coupler Put a Shower of Sparks on it. Easy to do and starts much better than impulse coupled anyway anytime. Sent from my iPhone > On Mar 13, 2017, at 11:28 AM, Kelly McMullen wrote: > > > Could investigate swap of your Slick mags for overhauled Bendix S-1200 mags with impulse coupling. Makes it a D4B5 with much better high altitude performance. The S-1200 are the best mags ever made. My rebuilder offered me new Slick or overhauled S-6 or S-1200 mags all at same price. I took the 1200s. A little tight fit with oil breather tube, otherwise fine. > >> On 3/13/2017 9:18 AM, Lenny Iszak wrote: >> >> According to this document from Lycoming, there are no approved impulse mags for the D4A5. >> >> https://www.lycoming.com/sites/default/files/SI1443L%20Approved%20Slick%20Magnetos.pdf >> >> >> >> vernon.franklin(at)gmail. wrote: >>> I am having a hard time identifying the mag that has the impulse coupler. On my Cherokee, I get a very distinct click when turning the prop over, it is very easy to identify. But with this 540, I am not getting anything. >>> >>> >>> It is a stock D4A5 with factory installed slicks purchased through Vans. >>> Is there a chance that it shipped without a coupler? If so, is that going to be an issue, and should I purchase one? Do I still ground out the right mag on startup in such a scenario? >>> >>> >>> Thanks in advance! >>> >>> >>> -- >>> Vernon Franklin >> >> >> -------- >> Lenny >> N311LZ >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=467242#467242 >> >> >> >> >> >> >> >> >> > > > ________________________________ Message 9 _____________________________________ Time: 09:43:57 AM PST US From: Tim Olson Subject: Re: RV10-List: Re: Impulse Coupler Or better yet put on electronic ignition... > On Mar 13, 2017, at 11:33 AM, Danny Riggs wrote: > > > Put a Shower of Sparks on it. Easy to do and starts much better than impulse coupled anyway anytime. > > Sent from my iPhone > >> On Mar 13, 2017, at 11:28 AM, Kelly McMullen wrote: >> >> >> Could investigate swap of your Slick mags for overhauled Bendix S-1200 mags with impulse coupling. Makes it a D4B5 with much better high altitude performance. The S-1200 are the best mags ever made. My rebuilder offered me new Slick or overhauled S-6 or S-1200 mags all at same price. I took the 1200s. A little tight fit with oil breather tube, otherwise fine. >> >>> On 3/13/2017 9:18 AM, Lenny Iszak wrote: >>> >>> According to this document from Lycoming, there are no approved impulse mags for the D4A5. >>> >>> https://www.lycoming.com/sites/default/files/SI1443L%20Approved%20Slick%20Magnetos.pdf >>> >>> >>> >>> vernon.franklin(at)gmail. wrote: >>>> I am having a hard time identifying the mag that has the impulse coupler. On my Cherokee, I get a very distinct click when turning the prop over, it is very easy to identify. But with this 540, I am not getting anything. >>>> >>>> >>>> It is a stock D4A5 with factory installed slicks purchased through Vans. >>>> Is there a chance that it shipped without a coupler? If so, is that going to be an issue, and should I purchase one? Do I still ground out the right mag on startup in such a scenario? >>>> >>>> >>>> Thanks in advance! >>>> >>>> >>>> -- >>>> Vernon Franklin >>> >>> >>> -------- >>> Lenny >>> N311LZ >>> >>> >>> >>> >>> Read this topic online here: >>> >>> http://forums.matronics.com/viewtopic.php?p=467242#467242 >>> >>> >>> >>> >>> >>> >>> >>> >>> >> >> >> > > > > ________________________________ Message 10 ____________________________________ Time: 10:18:09 AM PST US Subject: RV10-List: Re: Impulse Coupler From: "Lenny Iszak" Yep, when you consider the cost of the SlickStart and the money you get selling the brand new mag with the harness, the EI upgrade is practically free. After a few a couple of different ignition setups I ended up with the retard mag and a Lightspeed Plasma. I'm starting on the Lightspeed only and grounding out the retard mag. Starts like a car when cold, a bit finicky when hot, but i'm embarrassing myself less and less lately with my hot starts :) Tim Olson wrote: > Or better yet put on electronic ignition... > -------- Lenny N311LZ Read this topic online here: http://forums.matronics.com/viewtopic.php?p=467249#467249 ________________________________ Message 11 ____________________________________ Time: 02:50:00 PM PST US From: John Miller Subject: Re: RV10-List: Re: Impulse Coupler No true. I have one on the left mag. Installed 10yrs ago when Aerosport Power built my engine. grumpy do not archive > On Mar 13, 2017, at 11:18 AM, Lenny Iszak wrote: > > > According to this document from Lycoming, there are no approved impulse mags for the D4A5. > > https://www.lycoming.com/sites/default/files/SI1443L%20Approved%20Slick%20Magnetos.pdf > > > > vernon.franklin(at)gmail. wrote: >> I am having a hard time identifying the mag that has the impulse coupler. On my Cherokee, I get a very distinct click when turning the prop over, it is very easy to identify. But with this 540, I am not getting anything. >> >> >> It is a stock D4A5 with factory installed slicks purchased through Vans. >> Is there a chance that it shipped without a coupler? If so, is that going to be an issue, and should I purchase one? Do I still ground out the right mag on startup in such a scenario? >> >> >> Thanks in advance! >> >> >> -- >> Vernon Franklin > > > -------- > Lenny > N311LZ > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=467242#467242 > > > > > > > > > ________________________________ Message 12 ____________________________________ Time: 04:32:08 PM PST US Subject: RV10-List: Re: Impulse Coupler From: "Bob Turner" I'm not sure if "approved" (implying anything else is "disapproved") is the right word here. However, for the last 6 or 7 years Lycoming will not ship this engine with Slick impulse mags, and that's where Vans gets theirs from. I think this was in response to some SB or AD requiring frequent inspections of impulse couplings. Certainly, at least for a while, Vans' order form was a bit mis-leading, listing the Slick start as "an option". It really is pretty much required, unless, as others have said, you're going to ditch one or both mags for an electronic system. gengrumpy wrote: > No true. I have one on the left mag. Installed 10yrs ago when Aerosport Power built my engine. > > grumpy > > do not archive > > > > On Mar 13, 2017, at 11:18 AM, Lenny Iszak wrote: > > > > > > > > According to this document from Lycoming, there are no approved impulse mags for the D4A5. > > > > https://www.lycoming.com/sites/default/files/SI1443L%20Approved%20Slick%20Magnetos.pdf > > > > > > > > vernon.franklin(at)gmail. wrote: > > > I am having a hard time identifying the mag that has the impulse coupler. On my Cherokee, I get a very distinct click when turning the prop over, it is very easy to identify. But with this 540, I am not getting anything. > > > > > > > > > It is a stock D4A5 with factory installed slicks purchased through Vans. > > > Is there a chance that it shipped without a coupler? If so, is that going to be an issue, and should I purchase one? Do I still ground out the right mag on startup in such a scenario? > > > > > > > > > Thanks in advance! > > > > > > > > > -- > > > Vernon Franklin > > > > > > -------- > > Lenny > > N311LZ > > > > > > > > > > Read this topic online here: > > > > http://forums.matronics.com/viewtopic.php?p=467242#467242 > > > > > > > > > > > > > > > > > > > > > > > -------- Bob Turner RV-10 QB Read this topic online here: http://forums.matronics.com/viewtopic.php?p=467265#467265 ________________________________ Message 13 ____________________________________ Time: 04:44:12 PM PST US Subject: Re: RV10-List: Re: Impulse Coupler From: Duane Wilson I dont understand the required part of this discussion. I have a Vans new experimental Lycoming D4A5 without the Slick start option and I have never had any trouble starting. What am I missing? > On Mar 13, 2017, at 4:31 PM, Bob Turner wrote: > > > I'm not sure if "approved" (implying anything else is "disapproved") is the right word here. However, for the last 6 or 7 years Lycoming will not ship this engine with Slick impulse mags, and that's where Vans gets theirs from. I think this was in response to some SB or AD requiring frequent inspections of impulse couplings. > > Certainly, at least for a while, Vans' order form was a bit mis-leading, listing the Slick start as "an option". It really is pretty much required, unless, as others have said, you're going to ditch one or both mags for an electronic system. > > > > > > gengrumpy wrote: >> No true. I have one on the left mag. Installed 10yrs ago when Aerosport Power built my engine. >> >> grumpy >> >> do not archive >> >> >>> On Mar 13, 2017, at 11:18 AM, Lenny Iszak wrote: >>> >>> >>> >>> According to this document from Lycoming, there are no approved impulse mags for the D4A5. >>> >>> https://www.lycoming.com/sites/default/files/SI1443L%20Approved%20Slick%20Magnetos.pdf >>> >>> >>> >>> vernon.franklin(at)gmail. wrote: >>>> I am having a hard time identifying the mag that has the impulse coupler. On my Cherokee, I get a very distinct click when turning the prop over, it is very easy to identify. But with this 540, I am not getting anything. >>>> >>>> >>>> It is a stock D4A5 with factory installed slicks purchased through Vans. >>>> Is there a chance that it shipped without a coupler? If so, is that going to be an issue, and should I purchase one? Do I still ground out the right mag on startup in such a scenario? >>>> >>>> >>>> Thanks in advance! >>>> >>>> >>>> -- >>>> Vernon Franklin >>> >>> >>> -------- >>> Lenny >>> N311LZ >>> >>> >>> >>> >>> Read this topic online here: >>> >>> http://forums.matronics.com/viewtopic.php?p=467242#467242 >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >> > > > -------- > Bob Turner > RV-10 QB > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=467265#467265 > > > > > > > > > ________________________________ Message 14 ____________________________________ Time: 05:23:52 PM PST US Subject: RV10-List: Re: Impulse Coupler From: "Bob Turner" Most of the new starters really spin the engine with a good battery - enough to generate a spark from the mag without the need of any augmentation. See if you can find an old battery - one that barely spins the engine. And add in some worn plugs, with gaps at their maximums instead of minimums. Does it still start? Here's the real test: For safety, pull all the plugs. Hook up plug#1 to the harness, and lay it on top of a cylinder where it has a good ground. Now slowly turn the prop past TDC on #1. If you had an impulse mag you'd see it spark. With no "slick start" you won't. Now repeat, but turn the prop faster and faster until you see a spark. That's the minimum RPM you'll need to start the engine. You'd probably find it hard to hand-prop this engine. But maybe that's a good thing? duawil wrote: > I dont understand the required part of this discussion. I have a Vans new experimental Lycoming D4A5 without the Slick start option and I have never had any trouble starting. What am I missing? > > > > > On Mar 13, 2017, at 4:31 PM, Bob Turner wrote: > > > > > > > > I'm not sure if "approved" (implying anything else is "disapproved") is the right word here. However, for the last 6 or 7 years Lycoming will not ship this engine with Slick impulse mags, and that's where Vans gets theirs from. I think this was in response to some SB or AD requiring frequent inspections of impulse couplings. > > > > Certainly, at least for a while, Vans' order form was a bit mis-leading, listing the Slick start as "an option". It really is pretty much required, unless, as others have said, you're going to ditch one or both mags for an electronic system. > > > > > > > > > > > > gengrumpy wrote: > > > No true. I have one on the left mag. Installed 10yrs ago when Aerosport Power built my engine. > > > > > > grumpy > > > > > > do not archive > > > > > > > > >> On Mar 13, 2017, at 11:18 AM, Lenny Iszak wrote: > > >> > > >> > > >> > > >> According to this document from Lycoming, there are no approved impulse mags for the D4A5. > > >> > > >> https://www.lycoming.com/sites/default/files/SI1443L%20Approved%20Slick%20Magnetos.pdf > > >> > > >> > > >> > > >> vernon.franklin(at)gmail. wrote: > > >>> I am having a hard time identifying the mag that has the impulse coupler. On my Cherokee, I get a very distinct click when turning the prop over, it is very easy to identify. But with this 540, I am not getting anything. > > >>> > > >>> > > >>> It is a stock D4A5 with factory installed slicks purchased through Vans. > > >>> Is there a chance that it shipped without a coupler? If so, is that going to be an issue, and should I purchase one? Do I still ground out the right mag on startup in such a scenario? > > >>> > > >>> > > >>> Thanks in advance! > > >>> > > >>> > > >>> -- > > >>> Vernon Franklin > > >> > > >> > > >> -------- > > >> Lenny > > >> N311LZ > > >> > > >> > > >> > > >> > > >> Read this topic online here: > > >> > > >> http://forums.matronics.com/viewtopic.php?p=467242#467242 > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > > > > > > > > -------- > > Bob Turner > > RV-10 QB > > > > > > > > > > Read this topic online here: > > > > http://forums.matronics.com/viewtopic.php?p=467265#467265 > > > > > > > > > > > > > > > > > > > > > > > -------- Bob Turner RV-10 QB Read this topic online here: http://forums.matronics.com/viewtopic.php?p=467267#467267 ________________________________ Message 15 ____________________________________ Time: 05:31:04 PM PST US From: "gulf" Subject: RE: RV10-List: Re: Impulse Coupler I purchased in 2013 engine from Lycoming Thunderbolt and they provided Slicks -----Original Message----- From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Bob Turner Sent: Monday, March 13, 2017 4:32 PM Subject: RV10-List: Re: Impulse Coupler I'm not sure if "approved" (implying anything else is "disapproved") is the right word here. However, for the last 6 or 7 years Lycoming will not ship this engine with Slick impulse mags, and that's where Vans gets theirs from. I think this was in response to some SB or AD requiring frequent inspections of impulse couplings. Certainly, at least for a while, Vans' order form was a bit mis-leading, listing the Slick start as "an option". It really is pretty much required, unless, as others have said, you're going to ditch one or both mags for an electronic system. gengrumpy wrote: > No true. I have one on the left mag. Installed 10yrs ago when Aerosport Power built my engine. > > grumpy > > do not archive > > > > On Mar 13, 2017, at 11:18 AM, Lenny Iszak wrote: > > > > > > > > According to this document from Lycoming, there are no approved impulse mags for the D4A5. > > > > > > https://www.lycoming.com/sites/default/files/SI1443L%20Approved%20Sl > > ick%20Magnetos.pdf > > > > > > > > vernon.franklin(at)gmail. wrote: > > > I am having a hard time identifying the mag that has the impulse > > > coupler. On my Cherokee, I get a very distinct click when > > > turning the prop over, it is very easy to identify. But with > > > this 540, I am not getting anything. > > > > > > > > > It is a stock D4A5 with factory installed slicks purchased through > > > Vans. Is there a chance that it shipped without a coupler? If so, is that going to be an issue, and should I purchase one? Do I still ground out the right mag on startup in such a scenario? > > > > > > > > > Thanks in advance! > > > > > > > > > -- > > > Vernon Franklin > > > > > > -------- > > Lenny > > N311LZ > > > > > > > > > > Read this topic online here: > > > > http://forums.matronics.com/viewtopic.php?p=467242#467242 > > > > > > > > > > > > > > > > > > > > > > > -------- Bob Turner RV-10 QB Read this topic online here: http://forums.matronics.com/viewtopic.php?p=467265#467265 ________________________________ Message 16 ____________________________________ Time: 06:02:59 PM PST US Subject: Re: RV10-List: Re: Impulse Coupler From: Kelly McMullen It isn't the brand, it is the specific model number of the mag whether it has impulse coupling or not. If it has a properly working impluse, you can't miss the snap when it releases. If it doesn't have it, the engine will be difficult to start on stock 25 degree timing instead of TDC. On 3/13/2017 5:27 PM, gulf wrote: > > I purchased in 2013 engine from Lycoming Thunderbolt and they provided > Slicks > > -----Original Message----- > From: owner-rv10-list-server@matronics.com > [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Bob Turner > Sent: Monday, March 13, 2017 4:32 PM > To: rv10-list@matronics.com > Subject: RV10-List: Re: Impulse Coupler > > > I'm not sure if "approved" (implying anything else is "disapproved") is the > right word here. However, for the last 6 or 7 years Lycoming will not ship > this engine with Slick impulse mags, and that's where Vans gets theirs from. > I think this was in response to some SB or AD requiring frequent inspections > of impulse couplings. > > Certainly, at least for a while, Vans' order form was a bit mis-leading, > listing the Slick start as "an option". It really is pretty much required, > unless, as others have said, you're going to ditch one or both mags for an > electronic system. > > > gengrumpy wrote: >> No true. I have one on the left mag. Installed 10yrs ago when Aerosport > Power built my engine. >> >> grumpy >> >> do not archive >> >> >>> On Mar 13, 2017, at 11:18 AM, Lenny Iszak wrote: >>> >>> >>> >>> According to this document from Lycoming, there are no approved impulse > mags for the D4A5. >>> >>> >>> https://www.lycoming.com/sites/default/files/SI1443L%20Approved%20Sl >>> ick%20Magnetos.pdf >>> >>> >>> >>> vernon.franklin(at)gmail. wrote: >>>> I am having a hard time identifying the mag that has the impulse >>>> coupler. On my Cherokee, I get a very distinct click when >>>> turning the prop over, it is very easy to identify. But with >>>> this 540, I am not getting anything. >>>> >>>> >>>> It is a stock D4A5 with factory installed slicks purchased through >>>> Vans. Is there a chance that it shipped without a coupler? If > so, is that going to be an issue, and should I purchase one? Do I still > ground out the right mag on startup in such a scenario? >>>> >>>> >>>> Thanks in advance! >>>> >>>> >>>> -- >>>> Vernon Franklin >>> >>> >>> -------- >>> Lenny >>> N311LZ >>> >>> >>> >>> >>> Read this topic online here: >>> >>> http://forums.matronics.com/viewtopic.php?p=467242#467242 >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >> > > > -------- > Bob Turner > RV-10 QB > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=467265#467265 > > ________________________________ Message 17 ____________________________________ Time: 06:03:25 PM PST US From: Jesse Saint Subject: Re: RV10-List: Re: Impulse Coupler Approved, no. Installed, yes. Aerosport, Mattituck and probably others installed impulse coupled mags, but never Van's. Jesse Saint Saint Aviation, Inc. 352-427-0285 jesse@saintaviation.com Sent from my iPad > On Mar 13, 2017, at 5:49 PM, John Miller wrote: > > > No true. I have one on the left mag. Installed 10yrs ago when Aerosport Power built my engine. > > grumpy > > do not archive > >> On Mar 13, 2017, at 11:18 AM, Lenny Iszak wrote: >> >> >> According to this document from Lycoming, there are no approved impulse mags for the D4A5. >> >> https://www.lycoming.com/sites/default/files/SI1443L%20Approved%20Slick%20Magnetos.pdf >> >> >> >> vernon.franklin(at)gmail. wrote: >>> I am having a hard time identifying the mag that has the impulse coupler. On my Cherokee, I get a very distinct click when turning the prop over, it is very easy to identify. But with this 540, I am not getting anything. >>> >>> >>> It is a stock D4A5 with factory installed slicks purchased through Vans. >>> Is there a chance that it shipped without a coupler? If so, is that going to be an issue, and should I purchase one? Do I still ground out the right mag on startup in such a scenario? >>> >>> >>> Thanks in advance! >>> >>> >>> -- >>> Vernon Franklin >> >> >> -------- >> Lenny >> N311LZ >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=467242#467242 >> >> >> >> >> >> >> >> >> > > > > > ________________________________ Message 18 ____________________________________ Time: 06:08:51 PM PST US From: Jesse Saint Subject: Re: RV10-List: Re: Impulse Coupler We had an RV-10 that started and ran fine for a year or two without a Slick Start. Then, I taxied to the pumps once and it wouldn't start after I pumped gas. I waited for an hour and it fired right up (after charging the battery back up). This happened a number of times before we could get the Slick Start installed. Never a problem again. If only cold starting with a good battery, not a problem. Hot starting without Slick Start is virtually impossible. The owner of his one never did a hot start. He flew somewhere and had a meeting for a while before trying to start again. He always had it fueled at his hangar by the fuel truck. It wasn't until that time I taxied to the pumps that I realized there wasn't an impulse coupling. The main danger of no Slick Start is probably a kickback by firing at base timing instead of TDC, which the retard breaker does through the Slick Start. That's also why normal mags are grounded during start with the R mag ground jumper on a standard key switch. Not really common, but can happen. Jesse Saint Saint Aviation, Inc. 352-427-0285 jesse@saintaviation.com Sent from my iPad > On Mar 13, 2017, at 8:21 PM, Bob Turner wrote: > > > Most of the new starters really spin the engine with a good battery - enough to generate a spark from the mag without the need of any augmentation. See if you can find an old battery - one that barely spins the engine. And add in some worn plugs, with gaps at their maximums instead of minimums. Does it still start? > Here's the real test: For safety, pull all the plugs. Hook up plug#1 to the harness, and lay it on top of a cylinder where it has a good ground. Now slowly turn the prop past TDC on #1. If you had an impulse mag you'd see it spark. With no "slick start" you won't. Now repeat, but turn the prop faster and faster until you see a spark. That's the minimum RPM you'll need to start the engine. > You'd probably find it hard to hand-prop this engine. But maybe that's a good thing? > > > > duawil wrote: >> I dont understand the required part of this discussion. I have a Vans new experimental Lycoming D4A5 without the Slick start option and I have never had any trouble starting. What am I missing? >> >> >> >>> On Mar 13, 2017, at 4:31 PM, Bob Turner wrote: >>> >>> >>> >>> I'm not sure if "approved" (implying anything else is "disapproved") is the right word here. However, for the last 6 or 7 years Lycoming will not ship this engine with Slick impulse mags, and that's where Vans gets theirs from. I think this was in response to some SB or AD requiring frequent inspections of impulse couplings. >>> >>> Certainly, at least for a while, Vans' order form was a bit mis-leading, listing the Slick start as "an option". It really is pretty much required, unless, as others have said, you're going to ditch one or both mags for an electronic system. >>> >>> >>> >>> >>> >>> gengrumpy wrote: >>>> No true. I have one on the left mag. Installed 10yrs ago when Aerosport Power built my engine. >>>> >>>> grumpy >>>> >>>> do not archive >>>> >>>> >>>>> On Mar 13, 2017, at 11:18 AM, Lenny Iszak wrote: >>>>> >>>>> >>>>> >>>>> According to this document from Lycoming, there are no approved impulse mags for the D4A5. >>>>> >>>>> https://www.lycoming.com/sites/default/files/SI1443L%20Approved%20Slick%20Magnetos.pdf >>>>> >>>>> >>>>> >>>>> vernon.franklin(at)gmail. wrote: >>>>>> I am having a hard time identifying the mag that has the impulse coupler. On my Cherokee, I get a very distinct click when turning the prop over, it is very easy to identify. But with this 540, I am not getting anything. >>>>>> >>>>>> >>>>>> It is a stock D4A5 with factory installed slicks purchased through Vans. >>>>>> Is there a chance that it shipped without a coupler? If so, is that going to be an issue, and should I purchase one? Do I still ground out the right mag on startup in such a scenario? >>>>>> >>>>>> >>>>>> Thanks in advance! >>>>>> >>>>>> >>>>>> -- >>>>>> Vernon Franklin >>>>> >>>>> >>>>> -------- >>>>> Lenny >>>>> N311LZ >>>>> >>>>> >>>>> >>>>> >>>>> Read this topic online here: >>>>> >>>>> http://forums.matronics.com/viewtopic.php?p=467242#467242 >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>> >>> >>> >>> -------- >>> Bob Turner >>> RV-10 QB >>> >>> >>> >>> >>> Read this topic online here: >>> >>> http://forums.matronics.com/viewtopic.php?p=467265#467265 >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >> > > > -------- > Bob Turner > RV-10 QB > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=467267#467267 > > > > > > > > > ________________________________ Message 19 ____________________________________ Time: 06:34:02 PM PST US From: Rob Kermanj Subject: Re: RV10-List: Re: Impulse Coupler I had the same set up. After a while, it gets harder and harder to start. In fact it nearly refused to start one day and that is how I realized I did not have an impulse coupled mag. Put a shower of sparks and all is good. Do not archive. Sent from my iPhone > On Mar 13, 2017, at 7:43 PM, Duane Wilson wrote: > > > I dont understand the required part of this discussion. I have a Vans new experimental Lycoming D4A5 without the Slick start option and I have never had any trouble starting. What am I missing? > > >> On Mar 13, 2017, at 4:31 PM, Bob Turner wrote: >> >> >> I'm not sure if "approved" (implying anything else is "disapproved") is the right word here. However, for the last 6 or 7 years Lycoming will not ship this engine with Slick impulse mags, and that's where Vans gets theirs from. I think this was in response to some SB or AD requiring frequent inspections of impulse couplings. >> >> Certainly, at least for a while, Vans' order form was a bit mis-leading, listing the Slick start as "an option". It really is pretty much required, unless, as others have said, you're going to ditch one or both mags for an electronic system. >> >> >> >> >> >> gengrumpy wrote: >>> No true. I have one on the left mag. Installed 10yrs ago when Aerosport Power built my engine. >>> >>> grumpy >>> >>> do not archive >>> >>> >>>> On Mar 13, 2017, at 11:18 AM, Lenny Iszak wrote: >>>> >>>> >>>> >>>> According to this document from Lycoming, there are no approved impulse mags for the D4A5. >>>> >>>> https://www.lycoming.com/sites/default/files/SI1443L%20Approved%20Slick%20Magnetos.pdf >>>> >>>> >>>> >>>> vernon.franklin(at)gmail. wrote: >>>>> I am having a hard time identifying the mag that has the impulse coupler. On my Cherokee, I get a very distinct click when turning the prop over, it is very easy to identify. But with this 540, I am not getting anything. >>>>> >>>>> >>>>> It is a stock D4A5 with factory installed slicks purchased through Vans. >>>>> Is there a chance that it shipped without a coupler? If so, is that going to be an issue, and should I purchase one? Do I still ground out the right mag on startup in such a scenario? >>>>> >>>>> >>>>> Thanks in advance! >>>>> >>>>> >>>>> -- >>>>> Vernon Franklin >>>> >>>> >>>> -------- >>>> Lenny >>>> N311LZ >>>> >>>> >>>> >>>> >>>> Read this topic online here: >>>> >>>> http://forums.matronics.com/viewtopic.php?p=467242#467242 >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>> >> >> >> -------- >> Bob Turner >> RV-10 QB >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=467265#467265 >> >> >> >> >> >> >> >> >> > > > > > ________________________________ Message 20 ____________________________________ Time: 06:57:09 PM PST US From: Doc Subject: RV10-List: Vans shipped D4A5 engine We installed a factory new D4A5 when we built (2012). It has a 6393 Slick Mag on the Left side and a 6350 on the Right side (no impulse couplings). Had no problem starting cold or hot (except for leaving the mixture out when engine hot until it fires--2-3 seconds, and then enriching the mixture) until we had about 270 hours on the new engine. Started to be hard to start, especially when hot, then. A couple flights later it ran a little rough with the Left Mag check at run up. Put in new plugs in spite of the original plugs checking out good, gapped and cleaned,etc. Still hard to start, even when cold. Pulled Left Mag and had it "rebuilt-repaired" ($375). Starts immediately now--just a couple turns of the prop. Still use the hot start routine (Fuel mixture lean until fires) which they tell me is indicative of D4A5's. 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