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Re: O-200 Exhaust ... Straight pipes or cross?
Ryszard Zadow
On May 14, 2022, at 21:49, Ryszard Zadow <ryszardzadow@...> wrote:
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Re: O-200 Exhaust ... Straight pipes or cross?
Ryszard Zadow
< Nice and quiet. 😊>
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Ewww!
On May 14, 2022, at 21:19, Jim Patillo <Logistics_engineering@...> wrote:
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Re: O-200 Exhaust ... Straight pipes or cross?
John Hartley
How about a 4:4 system with stubby pipes - no bends, each pipe is straight and goes down through it's own hole in the cowling and chopped off about 2-3 inches past the cowling? The longest pipe is about 12 inches and the shortest is about 7. That's how the system is on my O-200 (only 5 hours on it with it in this configuration)(150 ish hours on the Revmaster that I pulled after the third time it tried to kill me...). Am I'm gonna have cracks with this setup? Was just thinking I may need a spring-type setup between the pipes inside the cowling to maintain tension on the pipes.
John Hartley Most of the money I've made in my life has been spent on airplanes. I wasted the rest.
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Re: O-200 Exhaust ... Straight pipes or cross?
Agreed, and straights sound more like a Formula 1 flyover 😂
-- Robert "TheFrisco" Schmid (408) 805-5450 www.facebook.com/TheFlyingFriscos www.theflyingfriscos.com Love building planes almost as much as flying. Latest completed build is "Loki", a Chinook Plus 2 bush plane.
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Re: O-200 Exhaust ... Straight pipes or cross?
Yeah but…….4:1 sure sounds good on a fly by. Nice and quiet. 😊
From: main@Q-List.groups.io <main@Q-List.groups.io> on behalf of Sam Hoskins <sam.hoskins@...>
Sent: Tuesday, May 10, 2022 4:26:37 PM To: main@q-list.groups.io <main@q-list.groups.io> Subject: Re: [Q-List] O-200 Exhaust ... Straight pipes or cross? The cross over system is a maintenance nightmare. Two-into-one on each side is much more serviceable.
On Tue, May 10, 2022, 3:40 PM Robert Schmid <robert@...> wrote:
I have a few leads on a the O-200 exhaust pipes that cross underneath the engine and have one pipe out the cowling. But I read and heard in YouTube videos that with the straight out exhaust and 2 piples coming out the cowling, the temp inside the cowling stays lower, oil temp stays lower and I might not need an oil cooler.
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Re: AV30 Install
Corbin <c_geiser@...>
VERY nice, Jim! That looks great and I kind like the original look being maintained.
-- Corbin N121CG
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Re: AV30 Install
Rick Hole
Well done. My caution was intended for new builders for whom undersized wires is an easy mistake to make. Sonia (1953-2020) & Rick
On Sat, May 14, 2022, 5:47 PM Jim Patillo <Logistics_engineering@...> wrote:
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AV-30
I like it lost 17 lbs of vacuum junk
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Re: AV30 Install
Looks fantastic Jim! Avionics is a great company! I have their ADSB-in and out in my RV6.
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Bruce
On May 14, 2022, at 6:47 PM, Jim Patillo <logistics_engineering@...> wrote:
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Re: AV30 Install
Kevin and Rick, Jim
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Re: AV30 Install
Paul Fisher
Very nice Jim. I'd like to do the same thing, but a significant portion of my 401k seems to have disappeared in the past few weeks. I think I'll wait a while! But your's looks great. Paul
On Sat, May 14, 2022, 10:20 Jim Patillo <Logistics_engineering@...> wrote:
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Re: AV30 Install
Rick Hole
To put my previous comment in perspective I looked up in FAA Advisory Circular 43.13-1b the table 11-3 on page 11-15.
For the circuit in question, take the breaker or fuse value and read the wire gauge in the left column. Too small a wire (higher gauge number than listed) is a fire hazard. Too large is safe but carries other penalties. For a 22g wire, the breaker should be no larger than 5 amps.
This is a common error in homebuilt aircraft.
Rick Hole
From: main@Q-List.groups.io [mailto:main@Q-List.groups.io] On Behalf Of Rick Hole via groups.io
Sent: Saturday, May 14, 2022 10:48 AM To: main@Q-List.groups.io Subject: Re: [Q-List] AV30 Install
Just a reminder, wire size for both power and ground is determined by the breaker or fuse protecting that circuit, not by the expected load. In the event of a short circuit the wire must conduct high current until the breaker or fuse interrupts the circuit without overheating. For an extreme example, consider if the load were a 10 mA LED pilot light connected to a 10 amp breaker circuit. A short at the LED would result in (more than) 10 amps flowing through the wire. While it is tempting to think we could use perhaps a 24 or 26 gauge wire, plenty good for 10 mA, that wire would glow red hot before evaporating with the possibility of causing other nearby wires’ insulation to melt and a cascade failure result. Or an in-flight fire. Hence the wire must hold up for the trip current long enough for the breaker/fuse to blow.
Rick Hole
From: main@Q-List.groups.io [mailto:main@Q-List.groups.io] On Behalf Of Kevin Boddicker
Jim, What size wire did you use for the install?
Will I see you in September? No song lyrics intended.
Kevin Boddicker
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Re: AV30 Install
22ga. Shielded Kevin. Jim
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Re: AV30 Install
Hi Kevin, 22ga.
Jim
From: main@Q-List.groups.io <main@Q-List.groups.io> on behalf of Kevin Boddicker <trumanst@...>
Sent: Saturday, May 14, 2022 9:11:28 AM To: main@q-list.groups.io <main@Q-List.groups.io> Subject: Re: [Q-List] AV30 Install Jim,
What size wire did you use for the install?
Will I see you in September? No song lyrics intended.
Kevin
Boddicker
TriQ 200 N7868B 580 hrs Luana, IA.
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Re: AV30 Install
Sorry to hear about that, Jim. Your gonna have to wear steel toed shoes to stay in weight and balance now.
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Phil Lankford
On May 14, 2022, at 9:11 AM, Kevin Boddicker <trumanst@...> wrote:
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Re: AV30 Install
Nice job Jim!!!!
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Mike
On May 14, 2022, at 11:48 AM, Rick Hole via groups.io <r.hole@...> wrote:
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Re: AV30 Install
Rick Hole
Just a reminder, wire size for both power and ground is determined by the breaker or fuse protecting that circuit, not by the expected load. In the event of a short circuit the wire must conduct high current until the breaker or fuse interrupts the circuit without overheating. For an extreme example, consider if the load were a 10 mA LED pilot light connected to a 10 amp breaker circuit. A short at the LED would result in (more than) 10 amps flowing through the wire. While it is tempting to think we could use perhaps a 24 or 26 gauge wire, plenty good for 10 mA, that wire would glow red hot before evaporating with the possibility of causing other nearby wires’ insulation to melt and a cascade failure result. Or an in-flight fire. Hence the wire must hold up for the trip current long enough for the breaker/fuse to blow.
Rick Hole
From: main@Q-List.groups.io [mailto:main@Q-List.groups.io] On Behalf Of Kevin Boddicker
Sent: Saturday, May 14, 2022 10:11 AM To: main@q-list.groups.io Subject: Re: [Q-List] AV30 Install
Jim, What size wire did you use for the install?
Will I see you in September? No song lyrics intended.
Kevin Boddicker
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Re: AV30 Install
Kevin Boddicker
Jim,
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What size wire did you use for the install? Will I see you in September? No song lyrics intended.
Kevin Boddicker
TriQ 200 N7868B 580 hrs Luana, IA.
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Re: AV30 Install
Jerry Marstall
Very nice. Less wt = more speed. Jerry m
On Sat, May 14, 2022, 11:20 AM Jim Patillo <Logistics_engineering@...> wrote:
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AV30 Install
Good morning, I wanted to maintain the Legacy look, yet have AHRS/EFIS capability with Wifi interface. I flew with the new instruments a couple days ago, tweaking parameters for AOA and G Load graphics. Next I will do the Magnometer calibration. The new units weigh a couple ounces each.
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46JP Q00
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