---------------------------------------------------------- RV10-List Digest Archive --- Total Messages Posted Tue 06/29/10: 21 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:56 AM - Re: Cowl Flaps (Robin Marks) 2. 03:12 PM - Re: brake fluid loss (Marcus Cooper) 3. 03:12 PM - New taxi procedures at controlled airports (Marcus Cooper) 4. 03:45 PM - Composites for RV10 (Dave Saylor) 5. 03:54 PM - Re: Cowl Flaps (Tim Olson) 6. 04:11 PM - Re: Cowl Flaps (Pascal) 7. 04:13 PM - Re: Cowl Flaps (Kelly McMullen) 8. 04:13 PM - Re: brake fluid loss (Tim Olson) 9. 04:24 PM - Re: Cowl Flaps (Tim Olson) 10. 04:35 PM - Re: Cowl Flaps (Deems Davis) 11. 05:07 PM - Re: Cowl Flaps (Ben Westfall) 12. 05:25 PM - Re: Composites for RV10 (Bill Watson) 13. 05:40 PM - trutrak adi (Chris) 14. 05:40 PM - Re: brake fluid loss (Marcus Cooper) 15. 05:46 PM - ~Re: Cowl Flaps (Robin Marks) 16. 05:54 PM - Re: brake fluid loss (Kelly McMullen) 17. 06:27 PM - Re: trutrak adi (Lenny Iszak) 18. 07:23 PM - Re: Cowl Flaps (Miller John) 19. 07:24 PM - Re: Re: trutrak adi (Chris) 20. 08:06 PM - Re: Cowl Flaps (Dick & Vicki Sipp) 21. 08:39 PM - Re: Cowl Flaps (Don McDonald) ________________________________ Message 1 _____________________________________ Time: 09:56:14 AM PST US From: Robin Marks Subject: RE: RV10-List: Cowl Flaps Sounds like the answer is no. I don't see the need if you are going standard vans cowl, 260 Hp engine etc... Maybe upgrade to the 2006 oil cooler and place the oil cooler splitter in the "wedge" Why complicate things that already work. Adding cowl flaps will definitely complicate the lower cowl assembly. Robin Do Not Archive -----Original Message----- From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Tom Koelzer Sent: Monday, June 28, 2010 6:29 PM Subject: RV10-List: Cowl Flaps Any one build cowl flaps for the rv-10? ________________________________ Message 2 _____________________________________ Time: 03:12:12 PM PST US From: "Marcus Cooper" Subject: RE: RV10-List: brake fluid loss I had a leak in a caliper with a bad 'O' ring on the cylinder. You could see the fluid on the inside of the wheel pant but to be honest it took some time to realize why I had fluid loss in the brake lines. FWIW, with all the hate and discontent about the standard brake lines, I sure was glad to see that giant air bubble prior to actually losing brakes (not intended to start any comments, just an observation on my part ;) ). Marcus From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@matronics.com] On Behalf Of DLM Sent: Monday, June 28, 2010 10:53 AM Subject: RV10-List: brake fluid loss After last bleeding of the brakes, we had near full lines. Now we have air in the lines between the reservoir and the right seat brake cylinders. Initially we found a 5606 residue on the firewall below the reservoir. Cleaned that off and do not have it now but clear lines from the reservoir to the right seat cylinders. At the annual in April, opened the tunnel and cleaned the fuel filter. No seep from the brake lines was observed. My lines have a union at the forward and a bulkhead fitting where the lines exit the tunnel under the seats. No seep was observed there in April. The only thing not checked in April was the bulkhead fitting to the SS braided Teflon lines to the brake calipers and the brake calipers Whatever loss is occurring is a seep and very slowly but we want to fix. Anyone else experience this? ________________________________ Message 3 _____________________________________ Time: 03:12:35 PM PST US From: "Marcus Cooper" Subject: RV10-List: New taxi procedures at controlled airports At little off topic but in case the word is slow to get out a new procedure takes effect on 30 Jun this may help. No longer will you ever be cleared to taxi to a runway that involves crossing other runways along the way. Not a big deal as you just follow their clearance and you are good to go, you just might realize more stop and go and unused runways. Here's the info from the FAA (http://www.faa.gov/airports/runway_safety/news/current_events/taxi_to/ ): Explicit Runway Crossing Procedure Change Beginning June 30, 2010, controllers will be required to issue explicit instructions to cross or hold short of each runway that intersects a taxi route. "Taxi to" will no longer be used when issuing taxi instructions to an assigned take-off runway. Instructions to cross a runway will be issued one at a time. Instructions to cross multiple runways will not be issued. An aircraft or vehicle must have crossed the previous runway before another runway crossing is issued. This applies to any runway including inactive or closed runways. Changes will also be made to the AIM and AIP to reflect the new procedures. Never cross a hold line without explicit ATC instructions. If in doubt ASK! Reminder: You may not enter a runway unless you have been: instructed to cross that specific runway; cleared to take off from that runway; or instructed to position and hold on that specific runway. For more information on the change, refer to FAA Order N JO 7110.532, which can be found at: http://www.faa.gov/documentLibrary/media/Notice/N7110.532.pdf. For additional information, go to http://www.faa.gov/go/runwaysafety Marcus 40286 ________________________________ Message 4 _____________________________________ Time: 03:45:59 PM PST US From: Dave Saylor Subject: RV10-List: Composites for RV10 We had been tentatively scheduled for an RV10 Composites class July 17-18 but I've decided to delay it until after Oshkosh. If you'd like to attend please send me a note so I can start a count. Tentative dates will be in mid-September. If anyone would like us to fit their cabin top, please let me know. We'll do it for you during the class, no charge. Also, if there are other types of classes people would be interested in, either for building or flying, please let me know. I'd be happy to present or host whatever people want to see. Dave Saylor AirCrafters 140 Aviation Way Watsonville, CA 95076 831-722-9141 Shop 831-750-0284 Cell ________________________________ Message 5 _____________________________________ Time: 03:54:34 PM PST US From: Tim Olson Subject: Re: RV10-List: Cowl Flaps You know, that oil cooler splitter thing.....I actually think my oil temps are now more of an issue since adding that splitter vane. These days I hit higher temps on climbout than I used to. I may actually remove mine, as now that I've had it closer to a year, I'm finding that I get oil > 200F in a climb even on cooler days, whereas I didn't have that happen until the splitter. I almost ALWAYS cruised at 185F before too, and now I find I may end up at 190 or 192 or something higher. No, that's not hot, but I can hit 215F in a climb now, on a 65F degree day. Used to never have that issue. It may make better airflow distribution, but it may be restricting or something. Or perhaps I did a bad job installing it. At any rate, I know I didn't see any appreciably decrease in temps, so at best I think it did nothing. I'm just hoping it isn't worse than nothing. Tim Olson - RV-10 N104CD do not archive On 6/29/2010 11:46 AM, Robin Marks wrote: > --> RV10-List message posted by: Robin Marks > > Sounds like the answer is no. > I don't see the need if you are going standard vans cowl, 260 Hp engine > etc... Maybe upgrade to the 2006 oil cooler and place the oil cooler > splitter in the "wedge" > Why complicate things that already work. Adding cowl flaps will definitely > complicate the lower cowl assembly. > > Robin > Do Not Archive > > > -----Original Message----- > From: owner-rv10-list-server@matronics.com > [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Tom Koelzer > Sent: Monday, June 28, 2010 6:29 PM > To: rv10-list@matronics.com > Subject: RV10-List: Cowl Flaps > > --> RV10-List message posted by: Tom Koelzer<40950@rv10.net> > > Any one build cowl flaps for the rv-10? > ________________________________ Message 6 _____________________________________ Time: 04:11:39 PM PST US From: "Pascal" Subject: Re: RV10-List: Cowl Flaps let us know what you see when you take the splitter out. -------------------------------------------------- From: "Tim Olson" Sent: Tuesday, June 29, 2010 1:07 PM Subject: Re: RV10-List: Cowl Flaps > > You know, that oil cooler splitter thing.....I actually think > my oil temps are now more of an issue since adding that splitter > vane. These days I hit higher temps on climbout than I used > to. I may actually remove mine, as now that I've had it > closer to a year, I'm finding that I get oil > 200F in > a climb even on cooler days, whereas I didn't have that > happen until the splitter. I almost ALWAYS cruised at 185F > before too, and now I find I may end up at 190 or 192 or > something higher. No, that's not hot, but I can hit 215F > in a climb now, on a 65F degree day. Used to never have > that issue. It may make better airflow distribution, but > it may be restricting or something. Or perhaps I did a bad > job installing it. At any rate, I know I didn't see any > appreciably decrease in temps, so at best I think it > did nothing. I'm just hoping it isn't worse than nothing. > > Tim Olson - RV-10 N104CD > do not archive > > > On 6/29/2010 11:46 AM, Robin Marks wrote: >> --> RV10-List message posted by: Robin Marks >> >> Sounds like the answer is no. >> I don't see the need if you are going standard vans cowl, 260 Hp engine >> etc... Maybe upgrade to the 2006 oil cooler and place the oil cooler >> splitter in the "wedge" >> Why complicate things that already work. Adding cowl flaps will >> definitely >> complicate the lower cowl assembly. >> >> Robin >> Do Not Archive >> >> >> -----Original Message----- >> From: owner-rv10-list-server@matronics.com >> [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Tom Koelzer >> Sent: Monday, June 28, 2010 6:29 PM >> To: rv10-list@matronics.com >> Subject: RV10-List: Cowl Flaps >> >> --> RV10-List message posted by: Tom Koelzer<40950@rv10.net> >> >> Any one build cowl flaps for the rv-10? >> > > > ________________________________ Message 7 _____________________________________ Time: 04:13:09 PM PST US Subject: Re: RV10-List: Cowl Flaps From: Kelly McMullen I know on my Mooney (Lyc IO-360) the oil temp redline is 245. Due to the placement of the oil cooler in a low pressure area (designed in early '60s) oil temp normally runs 205-210. It isn't unusual to see 215-220 on climb out or doing practice maneuvers. Only opening cowl flaps and reducing power are a help if increasing airspeed isn't an option. I wouldn't be bothered by 215 in the climb on a hot day, but at 65 degrees, that is hotter than it should be. I'd be thrilled if I could keep my cruise oil temp at 200. Of course later models moved the oil cooler behind left rear cylinder, attached to the baffling, that was noticeable help, but that requires field approval on certified plane, unlike our wonderful OBAM aircraft. Kelly On Tue, Jun 29, 2010 at 1:07 PM, Tim Olson wrote: > > You know, that oil cooler splitter thing.....I actually think > my oil temps are now more of an issue since adding that splitter > vane. These days I hit higher temps on climbout than I used > to. I may actually remove mine, as now that I've had it > closer to a year, I'm finding that I get oil > 200F in > a climb even on cooler days, whereas I didn't have that > happen until the splitter. I almost ALWAYS cruised at 185F > before too, and now I find I may end up at 190 or 192 or > something higher. No, that's not hot, but I can hit 215F > in a climb now, on a 65F degree day. Used to never have > that issue. It may make better airflow distribution, but > it may be restricting or something. Or perhaps I did a bad > job installing it. At any rate, I know I didn't see any > appreciably decrease in temps, so at best I think it > did nothing. I'm just hoping it isn't worse than nothing. > > Tim Olson - RV-10 N104CD > do not archive > > > On 6/29/2010 11:46 AM, Robin Marks wrote: >> >> >> Sounds like the answer is no. >> I don't see the need if you are going standard vans cowl, 260 Hp engine >> etc... Maybe upgrade to the 2006 oil cooler and place the oil cooler >> splitter in the "wedge" >> Why complicate things that already work. Adding cowl flaps will definitely >> complicate the lower cowl assembly. >> >> Robin >> Do Not Archive >> >> >> -----Original Message----- >> From: owner-rv10-list-server@matronics.com >> [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Tom Koelzer >> Sent: Monday, June 28, 2010 6:29 PM >> To: rv10-list@matronics.com >> Subject: RV10-List: Cowl Flaps >> >> >> Any one build cowl flaps for the rv-10? >> > > ________________________________ Message 8 _____________________________________ Time: 04:13:10 PM PST US From: Tim Olson Subject: Re: RV10-List: brake fluid loss Did you swap your o-rings for viton? I've heard that's a great thing to do with these brakes...supposedly better life and heat resistance. Another RV-10 buddy of mine got some for me when he got his. Tim Olson - RV-10 N104CD do not archive On 6/29/2010 4:56 PM, Marcus Cooper wrote: > I had a leak in a caliper with a bad O ring on the cylinder. You > could see the fluid on the inside of the wheel pant but to be honest it > took some time to realize why I had fluid loss in the brake lines. FWIW, > with all the hate and discontent about the standard brake lines, I sure > was glad to see that giant air bubble prior to actually losing brakes > (not intended to start any comments, just an observation on my part ;) ). > > Marcus > > *From:* owner-rv10-list-server@matronics.com > [mailto:owner-rv10-list-server@matronics.com] *On Behalf Of *DLM > *Sent:* Monday, June 28, 2010 10:53 AM > *To:* rv10-list@matronics.com > *Subject:* RV10-List: brake fluid loss > > After last bleeding of the brakes, we had near full lines. Now we have > air in the lines between the reservoir and the right seat brake > cylinders. Initially we found a 5606 residue on the firewall below the > reservoir. Cleaned that off and do not have it now but clear lines from > the reservoir to the right seat cylinders. At the annual in April, > opened the tunnel and cleaned the fuel filter. No seep from the brake > lines was observed. My lines have a union at the forward and a bulkhead > fitting where the lines exit the tunnel under the seats. No seep was > observed there in April. The only thing not checked in April was the > bulkhead fitting to the SS braided Teflon lines to the brake calipers > and the brake calipers Whatever loss is occurring is a seep and very > slowly but we want to fix. Anyone else experience this? > > * * > > * * > > - The RV10-List Email Forum utilities such as List Photoshare, and much > much --> http://www.matronic================= - MATRONICS WEB FORUMS via > the Web --> > http://forums.matronics.comstyle='mso-spacerun:yes'> > - List Contribution Web Site style='mso-spacerun:yes'> Thank you for > your generous style='mso-spacerun:yes'> -Matt style='mso-spacerun:yes'> > --> http://www.matronics.com/c= > > * * > > * > > > * ________________________________ Message 9 _____________________________________ Time: 04:24:58 PM PST US From: Tim Olson Subject: Re: RV10-List: Cowl Flaps Yeah, the temps themselves didn't cause me a huge concern, but I didn't put that splitter in until I had maybe 500-ish hours of time on the RV-10 to gain experience. Now, with maybe another 100+ hours of time since then, I think my temps are now higher, not lower, so I just am not convinced that it's either a) necessary, or b) always helpful. It *could* be, since nothing I tested is scientific, but you kind of get a feel for things like this over that many hours of operation. I just always could keep 185F in cruise before....now it's not as easy. Tim Olson - RV-10 N104CD do not archive On 6/29/2010 6:12 PM, Kelly McMullen wrote: > --> RV10-List message posted by: Kelly McMullen > > I know on my Mooney (Lyc IO-360) the oil temp redline is 245. Due to > the placement of the oil cooler in a low pressure area (designed in > early '60s) oil temp normally runs 205-210. It isn't unusual to see > 215-220 on climb out or doing practice maneuvers. Only opening cowl > flaps and reducing power are a help if increasing airspeed isn't an > option. > I wouldn't be bothered by 215 in the climb on a hot day, but at 65 > degrees, that is hotter than it should be. I'd be thrilled if I could > keep my cruise oil temp at 200. Of course later models moved the oil > cooler behind left rear cylinder, attached to the baffling, that was > noticeable help, but that requires field approval on certified plane, > unlike our wonderful OBAM aircraft. > Kelly > > On Tue, Jun 29, 2010 at 1:07 PM, Tim Olson wrote: >> --> RV10-List message posted by: Tim Olson >> >> You know, that oil cooler splitter thing.....I actually think >> my oil temps are now more of an issue since adding that splitter >> vane. These days I hit higher temps on climbout than I used >> to. I may actually remove mine, as now that I've had it >> closer to a year, I'm finding that I get oil> 200F in >> a climb even on cooler days, whereas I didn't have that >> happen until the splitter. I almost ALWAYS cruised at 185F >> before too, and now I find I may end up at 190 or 192 or >> something higher. No, that's not hot, but I can hit 215F >> in a climb now, on a 65F degree day. Used to never have >> that issue. It may make better airflow distribution, but >> it may be restricting or something. Or perhaps I did a bad >> job installing it. At any rate, I know I didn't see any >> appreciably decrease in temps, so at best I think it >> did nothing. I'm just hoping it isn't worse than nothing. >> >> Tim Olson - RV-10 N104CD >> do not archive >> >> >> On 6/29/2010 11:46 AM, Robin Marks wrote: >>> >>> --> RV10-List message posted by: Robin Marks >>> >>> Sounds like the answer is no. >>> I don't see the need if you are going standard vans cowl, 260 Hp engine >>> etc... Maybe upgrade to the 2006 oil cooler and place the oil cooler >>> splitter in the "wedge" >>> Why complicate things that already work. Adding cowl flaps will definitely >>> complicate the lower cowl assembly. >>> >>> Robin >>> Do Not Archive >>> >>> >>> -----Original Message----- >>> From: owner-rv10-list-server@matronics.com >>> [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Tom Koelzer >>> Sent: Monday, June 28, 2010 6:29 PM >>> To: rv10-list@matronics.com >>> Subject: RV10-List: Cowl Flaps >>> >>> --> RV10-List message posted by: Tom Koelzer<40950@rv10.net> >>> >>> Any one build cowl flaps for the rv-10? >>> >> >> >> >> >> > > ________________________________ Message 10 ____________________________________ Time: 04:35:24 PM PST US From: Deems Davis Subject: Re: RV10-List: Cowl Flaps For all of the James cowl/plenum RV10 drivers. You will want to find Alan Bickle @ OSH this year and talk and see what he's done re CHT and Oil Temps. It was a lot of work, but I think he's nailed the solution. Not to keep everyone in suspense, but his solution was bigger intake rings. If you haven't painted you cowl, See Alan 1st!!!. I just got back from a trip to Provo, Ut from PHX, and had Oil temps peak @ 220 on climb (and that was a 120kt climb) and avg 205 on the way up. Cyl #2 & #6 CHT's peaked @ 415-420! 40 deg ROP got them down to under 400. OAT @ altitude 65-70 F. BUT......... 25 degs LOP and CHT's dropped to 345-360 and OIL temps to 195. I'm really happily surprised to see the cooling advantage that LOP brings We had tail winds BOTH ways on our trip and still averaged 165kts GS @ 11.2 gph! I'm liking this LOP stuff!!!! Deems On 6/29/2010 9:46 AM, Robin Marks wrote: > --> RV10-List message posted by: Robin Marks > > Sounds like the answer is no. > I don't see the need if you are going standard vans cowl, 260 Hp engine > etc... Maybe upgrade to the 2006 oil cooler and place the oil cooler > splitter in the "wedge" > Why complicate things that already work. Adding cowl flaps will definitely > complicate the lower cowl assembly. > > Robin > Do Not Archive > > > -----Original Message----- > From: owner-rv10-list-server@matronics.com > [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Tom Koelzer > Sent: Monday, June 28, 2010 6:29 PM > To: rv10-list@matronics.com > Subject: RV10-List: Cowl Flaps > > --> RV10-List message posted by: Tom Koelzer<40950@rv10.net> > > Any one build cowl flaps for the rv-10? > > > ________________________________ Message 11 ____________________________________ Time: 05:07:06 PM PST US From: "Ben Westfall" Subject: RE: RV10-List: Cowl Flaps Tim James in the PDX area fitted a cowl flap on his plane. I've seen it but it was a while ago and I don't recall much of the design accept that it looked pretty simple and effective. He really likes it. Not sure if he's active on this list or not for pictures/description. Ben Westfall -----Original Message----- From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Tom Koelzer Sent: Monday, June 28, 2010 6:29 PM Subject: RV10-List: Cowl Flaps Any one build cowl flaps for the rv-10? ________________________________ Message 12 ____________________________________ Time: 05:25:48 PM PST US From: "Bill Watson" Subject: Re: RV10-List: Composites for RV10 If you want to gain confidence w/composites, this will do it.  I wasn' t new to composites having owned a couple of sailplanes, but Dave & Tea m are PROS.  The post class consultation is part of the class (and oft en shared here).   Recommend this highly if you want the training. -- Sent from my Palm Pre On Jun 29, 2010 3:25 PM, Dave Saylor <dave.saylor.aircrafters@gmail.com& gt; wrote: We had been tentatively scheduled for an RV10 Composites class July 17-18 but I've decided to delay it until after Oshkosh.  If you'd like to attend please send me a note so I can start a count.  Tentative dates will be in mid-September. If anyone would like us to fit their cabin top, please let me know.  We'll do it for you during the class, no charge. Also, if there are other types of classes people would be interested in, ei ther for building or flying, please let me know.  I'd be happy to pres ent or host whatever people want to see. Dave Saylor AirCrafters 140 Aviation Way Watsonville, CA 95076 831-722-9141 Shop 831-750-0284 Cell ________________________________ Message 13 ____________________________________ Time: 05:40:02 PM PST US From: "Chris" Subject: RV10-List: trutrak adi Wondered if anyone has the true dimensions of the 2.25 inch trutrak ADI. The hole dimension, the mounting screw hole locations, and the outside of the front square part of the housing dimensions etc. Can't seem to find a drawing anywhere. Thanks Chris Lucas #40072 ________________________________ Message 14 ____________________________________ Time: 05:40:13 PM PST US From: "Marcus Cooper" Subject: RE: RV10-List: brake fluid loss Unfortunately I hadn't heard of viton. I put a standard replacement in and it's been working great. I'll look into them though, thanks. -----Original Message----- From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Tim Olson Sent: Tuesday, June 29, 2010 6:44 PM Subject: Re: RV10-List: brake fluid loss Did you swap your o-rings for viton? I've heard that's a great thing to do with these brakes...supposedly better life and heat resistance. Another RV-10 buddy of mine got some for me when he got his. Tim Olson - RV-10 N104CD do not archive On 6/29/2010 4:56 PM, Marcus Cooper wrote: > I had a leak in a caliper with a bad 'O' ring on the cylinder. You > could see the fluid on the inside of the wheel pant but to be honest it > took some time to realize why I had fluid loss in the brake lines. FWIW, > with all the hate and discontent about the standard brake lines, I sure > was glad to see that giant air bubble prior to actually losing brakes > (not intended to start any comments, just an observation on my part ;) ). > > Marcus > > *From:* owner-rv10-list-server@matronics.com > [mailto:owner-rv10-list-server@matronics.com] *On Behalf Of *DLM > *Sent:* Monday, June 28, 2010 10:53 AM > *To:* rv10-list@matronics.com > *Subject:* RV10-List: brake fluid loss > > After last bleeding of the brakes, we had near full lines. Now we have > air in the lines between the reservoir and the right seat brake > cylinders. Initially we found a 5606 residue on the firewall below the > reservoir. Cleaned that off and do not have it now but clear lines from > the reservoir to the right seat cylinders. At the annual in April, > opened the tunnel and cleaned the fuel filter. No seep from the brake > lines was observed. My lines have a union at the forward and a bulkhead > fitting where the lines exit the tunnel under the seats. No seep was > observed there in April. The only thing not checked in April was the > bulkhead fitting to the SS braided Teflon lines to the brake calipers > and the brake calipers Whatever loss is occurring is a seep and very > slowly but we want to fix. Anyone else experience this? > > * * > > * * > > - The RV10-List Email Forum utilities such as List Photoshare, and much > much --> http://www.matronic================= - MATRONICS WEB FORUMS via > the Web --> > http://forums.matronics.comsty le='mso-spacerun:yes'> > - List Contribution Web Site style='mso-spacerun:yes'> Thank you for > your generous style='mso-spacerun:yes'> -Matt style='mso-spacerun:yes'> > --> http://www.matronics.com/c= > > * * > > * > > > * ________________________________ Message 15 ____________________________________ Time: 05:46:54 PM PST US From: Robin Marks Subject: ~RE: RV10-List: Cowl Flaps Interesting. It was mentioned to me more than a few times that the openings on the James cowl are much larger than needed but when I look at the Cirrus and Corvallis their inlet openings look larger than the James openings. The downside to the Experimental world seems to be completely void of aeronautical engineers. Regarding LOP I have been flying LOP for ~30 hours now. I was hoping my last restrictor change was to be my last but that change made the engine run worse LOP. Unfortunately I cannot accurately balance my injectors because my fuel flow bounces around too much to give accurate numbers. It bounces more than the desired delta of first to last cylinder one looks for in a finely tuned injector package. That being said in my prior setup I was able to fly LOP at ~11.2-11.5 GPH at 155 TAS with lower cylinder temps as described. Robin *From:* owner-rv10-list-server@matronics.com [mailto: owner-rv10-list-server@matronics.com] *On Behalf Of *Deems Davis *Sent:* Tuesday, June 29, 2010 4:35 PM *To:* rv10-list@matronics.com *Subject:* Re: RV10-List: Cowl Flaps For all of the James cowl/plenum RV10 drivers. You will want to find Alan Bickle @ OSH this year and talk and see what he's done re CHT and Oil Temps. It was a lot of work, but I think he's nailed the solution. Not to keep everyone in suspense, but his solution was bigger intake rings. If you haven't painted you cowl, See Alan 1st!!!. I just got back from a trip to Provo, Ut from PHX, and had Oil temps peak @ 220 on climb (and that was a 120kt climb) and avg 205 on the way up. Cyl #2 & #6 CHT's peaked @ 415-420! 40 deg ROP got them down to under 400. OAT @ altitude 65-70 F. BUT......... 25 degs LOP and CHT's dropped to 345-360 and OIL temps to 195. I'm really happily surprised to see the cooling advantage that LOP brings We had tail winds BOTH ways on our trip and still averaged 165kts GS @ 11.2 gph! I'm liking this LOP stuff!!!! Deems On 6/29/2010 9:46 AM, Robin Marks wrote: Sounds like the answer is no. I don't see the need if you are going standard vans cowl, 260 Hp engine etc... Maybe upgrade to the 2006 oil cooler and place the oil cooler splitter in the "wedge" Why complicate things that already work. Adding cowl flaps will definitely complicate the lower cowl assembly. Robin Do Not Archive -----Original Message----- From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@matronics.com ] On Behalf Of Tom Koelzer Sent: Monday, June 28, 2010 6:29 PM Subject: RV10-List: Cowl Flaps Any one build cowl flaps for the rv-10? * * * * * * ________________________________ Message 16 ____________________________________ Time: 05:54:03 PM PST US Subject: Re: RV10-List: brake fluid loss From: Kelly McMullen Viton O-rings are but one option. Some folks really like fluorosilcone O-rings. See Fluorosilicone O-Ring http://www.csobeech.com/o-Rings.html for detail. Available from Genuine Aircraft Hardware. Depends which characteristics are most important. The standard mil spec aren't all that great..adequate, but there is better. On Tue, Jun 29, 2010 at 5:24 PM, Marcus Cooper wrote: > > Unfortunately I hadn't heard of viton. I put a standard replacement in and > it's been working great. I'll look into them though, thanks. > > -----Original Message----- > From: owner-rv10-list-server@matronics.com > [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Tim Olson > Sent: Tuesday, June 29, 2010 6:44 PM > To: rv10-list@matronics.com > Subject: Re: RV10-List: brake fluid loss > > > Did you swap your o-rings for viton? I've heard that's a great > thing to do with these brakes...supposedly better life and > heat resistance. Another RV-10 buddy of mine got some for me > when he got his. > > Tim Olson - RV-10 N104CD > do not archive > > > On 6/29/2010 4:56 PM, Marcus Cooper wrote: >> I had a leak in a caliper with a bad 'O' ring on the cylinder. You >> could see the fluid on the inside of the wheel pant but to be honest it >> took some time to realize why I had fluid loss in the brake lines. FWIW, >> with all the hate and discontent about the standard brake lines, I sure >> was glad to see that giant air bubble prior to actually losing brakes >> (not intended to start any comments, just an observation on my part ;) ). >> >> Marcus >> >> *From:* owner-rv10-list-server@matronics.com >> [mailto:owner-rv10-list-server@matronics.com] *On Behalf Of *DLM >> *Sent:* Monday, June 28, 2010 10:53 AM >> *To:* rv10-list@matronics.com >> *Subject:* RV10-List: brake fluid loss >> >> After last bleeding of the brakes, we had near full lines. Now we have >> air in the lines between the reservoir and the right seat brake >> cylinders. Initially we found a 5606 residue on the firewall below the >> reservoir. Cleaned that off and do not have it now but clear lines from >> the reservoir to the right seat cylinders. At the annual in April, >> opened the tunnel and cleaned the fuel filter. No seep from the brake >> lines was observed. My lines have a union at the forward and a bulkhead >> fitting where the lines exit the tunnel under the seats. No seep was >> observed there in April. The only thing not checked in April was the >> bulkhead fitting to the SS braided Teflon lines to the brake calipers >> and the brake calipers Whatever loss is occurring is a seep and very >> slowly but we want to fix. Anyone else experience this? >> >> * * >> >> * * >> >> - The RV10-List Email Forum utilities such as List Photoshare, and much >> much --> http://www.matronic================= - MATRONICS WEB FORUMS via >> the Web --> >> > http://forums.matronics.comsty > le='mso-spacerun:yes'> >> - List Contribution Web Site style='mso-spacerun:yes'> Thank you for >> your generous style='mso-spacerun:yes'> -Matt style='mso-spacerun:yes'> >> --> http://www.matronics.com/c= >> >> * * >> >> * >> >> >> * > > ________________________________ Message 17 ____________________________________ Time: 06:27:00 PM PST US Subject: RV10-List: Re: trutrak adi From: "Lenny Iszak" Chris, I have one in my hand, but interestingly my caliper shows 2.24 horizontally and 2.26 vertically. Mine is definitely out of round. Distance between the screw holes are 1.85 both vertically and horizontally. Diagonally 2.61. Front box dimensions, 2.54 vertically and horizontally. Depth is 5.90 + .75 the connectors. Lenny Read this topic online here: http://forums.matronics.com/viewtopic.php?p=303051#303051 ________________________________ Message 18 ____________________________________ Time: 07:23:22 PM PST US From: Miller John Subject: Re: RV10-List: Cowl Flaps FWIW. My oil cooler setup remains stock Vans with exception of butterfly valve put in this winter just aft of the baffling on the oil cooler line (to keep temps higher in winter). Hot days here in TN and my oil temps stay 185-190 on climb out as long as I keep speed at or above 120. grumpy do not archive On Jun 29, 2010, at 3:07 PM, Tim Olson wrote: > > You know, that oil cooler splitter thing.....I actually think > my oil temps are now more of an issue since adding that splitter > vane. These days I hit higher temps on climbout than I used > to. I may actually remove mine, as now that I've had it > closer to a year, I'm finding that I get oil > 200F in > a climb even on cooler days, whereas I didn't have that > happen until the splitter. I almost ALWAYS cruised at 185F > before too, and now I find I may end up at 190 or 192 or > something higher. No, that's not hot, but I can hit 215F > in a climb now, on a 65F degree day. Used to never have > that issue. It may make better airflow distribution, but > it may be restricting or something. Or perhaps I did a bad > job installing it. At any rate, I know I didn't see any > appreciably decrease in temps, so at best I think it > did nothing. I'm just hoping it isn't worse than nothing. > > Tim Olson - RV-10 N104CD > do not archive > > > On 6/29/2010 11:46 AM, Robin Marks wrote: >> --> RV10-List message posted by: Robin Marks >> >> Sounds like the answer is no. >> I don't see the need if you are going standard vans cowl, 260 Hp >> engine >> etc... Maybe upgrade to the 2006 oil cooler and place the oil cooler >> splitter in the "wedge" >> Why complicate things that already work. Adding cowl flaps will >> definitely >> complicate the lower cowl assembly. >> >> Robin >> Do Not Archive >> >> >> -----Original Message----- >> From: owner-rv10-list-server@matronics.com >> [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Tom >> Koelzer >> Sent: Monday, June 28, 2010 6:29 PM >> To: rv10-list@matronics.com >> Subject: RV10-List: Cowl Flaps >> >> --> RV10-List message posted by: Tom Koelzer<40950@rv10.net> >> >> Any one build cowl flaps for the rv-10? >> > > ________________________________ Message 19 ____________________________________ Time: 07:24:01 PM PST US From: "Chris" Subject: RE: RV10-List: Re: trutrak adi Thanks! -Chris -----Original Message----- From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Lenny Iszak Sent: Tuesday, June 29, 2010 9:24 PM Subject: RV10-List: Re: trutrak adi Chris, I have one in my hand, but interestingly my caliper shows 2.24 horizontally and 2.26 vertically. Mine is definitely out of round. Distance between the screw holes are 1.85 both vertically and horizontally. Diagonally 2.61. Front box dimensions, 2.54 vertically and horizontally. Depth is 5.90 + .75 the connectors. Lenny Read this topic online here: http://forums.matronics.com/viewtopic.php?p=303051#303051 ________________________________ Message 20 ____________________________________ Time: 08:06:59 PM PST US From: "Dick & Vicki Sipp" Subject: Re: RV10-List: Cowl Flaps Just for another data point, ditto John's configuration and results. I love the butterfly valve for keeping temps up in the winter, easy to regulate oil temp from cockpit. Stays open in the summer with the temps John reports. Dick Sipp -------------------------------------------------- From: "Miller John" Sent: Tuesday, June 29, 2010 10:16 PM Subject: Re: RV10-List: Cowl Flaps > > FWIW. My oil cooler setup remains stock Vans with exception of butterfly > valve put in this winter just aft of the baffling on the oil cooler line > (to keep temps higher in winter). > > Hot days here in TN and my oil temps stay 185-190 on climb out as long as > I keep speed at or above 120. > > grumpy > do not archive > > On Jun 29, 2010, at 3:07 PM, Tim Olson wrote: > >> >> You know, that oil cooler splitter thing.....I actually think >> my oil temps are now more of an issue since adding that splitter >> vane. These days I hit higher temps on climbout than I used >> to. I may actually remove mine, as now that I've had it >> closer to a year, I'm finding that I get oil > 200F in >> a climb even on cooler days, whereas I didn't have that >> happen until the splitter. I almost ALWAYS cruised at 185F >> before too, and now I find I may end up at 190 or 192 or >> something higher. No, that's not hot, but I can hit 215F >> in a climb now, on a 65F degree day. Used to never have >> that issue. It may make better airflow distribution, but >> it may be restricting or something. Or perhaps I did a bad >> job installing it. At any rate, I know I didn't see any >> appreciably decrease in temps, so at best I think it >> did nothing. I'm just hoping it isn't worse than nothing. >> >> Tim Olson - RV-10 N104CD >> do not archive >> >> >> On 6/29/2010 11:46 AM, Robin Marks wrote: >>> --> RV10-List message posted by: Robin Marks >>> >>> Sounds like the answer is no. >>> I don't see the need if you are going standard vans cowl, 260 Hp engine >>> etc... Maybe upgrade to the 2006 oil cooler and place the oil cooler >>> splitter in the "wedge" >>> Why complicate things that already work. Adding cowl flaps will >>> definitely >>> complicate the lower cowl assembly. >>> >>> Robin >>> Do Not Archive >>> >>> >>> -----Original Message----- >>> From: owner-rv10-list-server@matronics.com >>> [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Tom Koelzer >>> Sent: Monday, June 28, 2010 6:29 PM >>> To: rv10-list@matronics.com >>> Subject: RV10-List: Cowl Flaps >>> >>> --> RV10-List message posted by: Tom Koelzer<40950@rv10.net> >>> >>> Any one build cowl flaps for the rv-10? >>> >> >> >> >> > > > ________________________________ Message 21 ____________________________________ Time: 08:39:30 PM PST US From: Don McDonald Subject: Re: RV10-List: Cowl Flaps Without the butterfly valve I was seeing oil temps in the 156 to 166 range. - When I reinstalled the valve, I could dial in practically any temperatu re I wanted... up to 187.- Then in the Spring I totally remove it... to b e-reinstalled in Oct Nov timeframe. Don McDonald --- On Tue, 6/29/10, Dick & Vicki Sipp wrote: From: Dick & Vicki Sipp Subject: Re: RV10-List: Cowl Flaps Just for another data point, ditto John's configuration and results.- I l ove the butterfly valve for keeping temps up in the winter, easy to regulate oi l temp from cockpit.- Stays open in the summer with the temps John reports. Dick Sipp -------------------------------------------------- From: "Miller John" Sent: Tuesday, June 29, 2010 10:16 PM Subject: Re: RV10-List: Cowl Flaps > > FWIW.- My oil cooler setup remains stock Vans with exception of- butt erfly > valve put in this winter just aft of the baffling on the oil- cooler li ne > (to keep temps higher in winter). > > Hot days here in TN and my oil temps stay 185-190 on climb out as long- as > I keep speed at or above 120. > > grumpy > do not archive > > On Jun 29, 2010, at 3:07 PM, Tim Olson wrote: > >> >> You know, that oil cooler splitter thing.....I actually think >> my oil temps are now more of an issue since adding that splitter >> vane.- These days I hit higher temps on climbout than I used >> to.- I may actually remove mine, as now that I've had it >> closer to a year, I'm finding that I get oil > 200F in >> a climb even on cooler days, whereas I didn't have that >> happen until the splitter.- I almost ALWAYS cruised at 185F >> before too, and now I find I may end up at 190 or 192 or >> something higher.- No, that's not hot, but I can hit 215F >> in a climb now, on a 65F degree day.- Used to never have >> that issue.- It may make better airflow distribution, but >> it may be restricting or something.- Or perhaps I did a bad >> job installing it.- At any rate, I know I didn't see any >> appreciably decrease in temps, so at best I think it >> did nothing.- I'm just hoping it isn't worse than nothing. >> >> Tim Olson - RV-10 N104CD >> do not archive >> >> >> On 6/29/2010 11:46 AM, Robin Marks wrote: >>> -->- RV10-List message posted by: Robin Marks >>> >>> Sounds like the answer is no. >>> I don't see the need if you are going standard vans cowl, 260 Hp- eng ine >>> etc... Maybe upgrade to the 2006 oil cooler and place the oil cooler >>> splitter in the "wedge" >>> Why complicate things that already work. Adding cowl flaps will >>> definitely >>> complicate the lower cowl assembly. >>> >>> Robin >>> Do Not Archive >>> >>> >>> -----Original Message----- >>> From: owner-rv10-list-server@matronics.com >>> [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Tom- Koelz er >>> Sent: Monday, June 28, 2010 6:29 PM >>> To: rv10-list@matronics.com >>> Subject: RV10-List: Cowl Flaps >>> >>> -->- RV10-List message posted by: Tom Koelzer<40950@rv10.net> >>> >>> Any one build cowl flaps for the rv-10? >>> >> >> >> >> > > > le, List Admin. =0A=0A=0A ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv10-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV10-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/rv10-list Browse Digests http://www.matronics.com/digest/rv10-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.