REFLECTOR: Reflector Digest, Vol 108, Issue 8
Jones Nick
nick.jones at volvo.com
Tue Mar 4 14:16:45 CST 2014
[cid:image001.jpg at 01CF37BC.BEDC1F30]
Lancair IV scoop mounted in the lower cowl
with airbox housing
[cid:image002.jpg at 01CF37BC.BEDC1F30]
K&N air filter mounted on airbox.
[cid:image003.jpg at 01CF37BC.BEDC1F30]
Airbox cover made from carbon fiber with outlet flange.
[cid:image004.jpg at 01CF37BC.BEDC1F30]
Airbox cover mounted with clamping latches
[cid:image005.jpg at 01CF37BC.BEDC1F30]
Alternate air door cable mounting bracket. Mounted
To engine backbone.
[cid:image006.jpg at 01CF37BC.BEDC1F30]
Cirrus SR22 alternate air door assembly mounted with actuator cable.
Nick and Connie Jones
Velocity XL-RG
N10CN
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Subject: Reflector Digest, Vol 108, Issue 8
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Today's Topics:
1. Re: Reflector Digest, Vol 108, Issue 5 (Don Johnston)
2. Re: Air intake (Richard J. Gentil)
----------------------------------------------------------------------
Message: 1
Date: Tue, 4 Mar 2014 13:37:11 -0600
From: Don Johnston <numa at comcast.net<mailto:numa at comcast.net>>
To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org<mailto:reflector at tvbf.org>>
Subject: Re: REFLECTOR: Reflector Digest, Vol 108, Issue 5
Message-ID:
<CALD29irBF39WqCRh5Un7SqVPA_bBjXCTtGmfJoh4vC5k4SGc0w at mail.gmail.com<mailto:CALD29irBF39WqCRh5Un7SqVPA_bBjXCTtGmfJoh4vC5k4SGc0w at mail.gmail.com>>
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Nick,
Got any pictures of your duct and alternate air door?
-Don
On Tue, Mar 4, 2014 at 12:07 PM, Jones Nick <nick.jones at volvo.com<mailto:nick.jones at volvo.com>> wrote:
> I installed a NACA scoop from a Lancair IV in the bottom cowl with a K&N
> air filter from a Dodge Viper with plumbing going up to the intake on the
> engine. I have a Cirrus SR22 alternate air door at the intake if things go
> wrong. I can't speak to how successful it is because I have not flown it
> yet, but it is installed in a high pressure area and it works good on the
> Lancair.
>
> Nick and Connie Jones
> Velocity XL-RG
> N10CN
> -----Original Message-----
> From: reflector-bounces at tvbf.org<mailto:reflector-bounces at tvbf.org> [mailto:reflector-bounces at tvbf.org] On
> Behalf Of reflector-request at tvbf.org<mailto:reflector-request at tvbf.org>
> Sent: Monday, March 03, 2014 19:58
> To: reflector at tvbf.org<mailto:reflector at tvbf.org>
> Subject: Reflector Digest, Vol 108, Issue 5
>
> Send Reflector mailing list submissions to
> reflector at tvbf.org<mailto:reflector at tvbf.org>
>
> To subscribe or unsubscribe via the World Wide Web, visit
> http://www.tvbf.org/mailman/listinfo/reflector
> or, via email, send a message with subject or body 'help' to
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>
> You can reach the person managing the list at
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>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Reflector digest..."
>
>
> Today's Topics:
>
> 1. Re: Air intake (Don Johnston)
> 2. Re: Air intake (Brett Ferrell)
> 3. Re: Air intake (Mike Dawson)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 3 Mar 2014 12:36:07 -0600
> From: Don Johnston <numa at comcast.net<mailto:numa at comcast.net>>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org<mailto:reflector at tvbf.org>>
> Subject: Re: REFLECTOR: Air intake
> Message-ID:
> <CALD29ipyRcCd7LpQfi6L_Q3mXTw-DT=
> X9vQd646zL+152tTY_Q at mail.gmail.com<mailto:X9vQd646zL+152tTY_Q at mail.gmail.com>>
> Content-Type: text/plain; charset="iso-8859-1"
>
> I can't speak to the benefits of a scoop, but Malcolm told me once not to
> center it under the cowling. He said that debris from the nose wheel will
> get flung up into it.
>
>
> On Mon, Mar 3, 2014 at 11:11 AM, Jack Prock <jackprock at wavecable.com<mailto:jackprock at wavecable.com>>
> wrote:
>
> > Hi,
> >
> >
> >
> > I would like to know if anyone has any thoughts on air intakes. I am
> > getting down to the last
> >
> > few items on my list before flight and one thing I was thinking about was
> > to put in an air intake
> >
> > scoop under the engine cowling. Something along these lines:
> >
> >
> >
> > [image: NHRA Pro Stock Composite Hood Scoop 100-8506]
> >
> >
> >
> > Now my question, is for the people that have put an external air intake
> on
> > the plane.
> >
> > Do you get a boost at higher altitude because of the ram air effect? Does
> > the drag of
> >
> > the scoop outweigh any positive effect from the boost?
> >
> >
> >
> > I have already started designing the scoop, but now have second thoughts
> > and wanted
> >
> > to see if I was going down the wrong path.
> >
> >
> >
> > Any thoughts?
> >
> >
> >
> > Jack Prock
> >
> > _______________________________________________
> > To change your email address, visit
> > http://www.tvbf.org/mailman/listinfo/reflector
> >
> > Visit the gallery! www.tvbf.org/gallery<http://www.tvbf.org/gallery>
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> >
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> ------------------------------
>
> Message: 2
> Date: Mon, 03 Mar 2014 14:25:13 -0500
> From: Brett Ferrell <reflector at velocityxl.com<mailto:reflector at velocityxl.com>>
> To: reflector at tvbf.org<mailto:reflector at tvbf.org>
> Subject: Re: REFLECTOR: Air intake
> Message-ID:
> <1393874713.11315.90070521.7186B86E at webmail.messagingengine.com<mailto:1393874713.11315.90070521.7186B86E at webmail.messagingengine.com>>
> Content-Type: text/plain; charset="us-ascii"
>
> Thanks for the shout-out... we do have a narrow deck Lycoming, but it
> dynoed at just over 300 HP, with high compression pistons...
>
>
>
> --
> Brett Ferrell
> reflector at velocityxl.com<mailto:reflector at velocityxl.com>
>
>
>
>
>
> On Mon, Mar 3, 2014, at 12:49 PM, Mike Dawson wrote:
>
> N44FV, a XLFG with a 260hp Lycoming, has been said to do about 180.
> This by Scott Swing who flew it as seen in a you tube video. Whether
> this was MPH or KTS really doesn't matter, Here is why. I own a XLFG
> with a 350hp Chevy V8. Other than downhill I have only seen 174KTS flat
> out!
> Now granted it is still in rough primer but I don't believe paint will
> make up for the airscoop I have hanging below the belly for the
> radiator.
>
> Our sleek airframes don't like stuff hanging off of them.
>
> N427VA a SERG 427 V8 useing NACA scoops to cool however, hauls ass.
> Bill and Brett did it right IMHO!
>
> Mike
> N104DD
>
> *
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> ------------------------------
>
> Message: 3
> Date: Mon, 3 Mar 2014 16:57:30 -0800
> From: Mike Dawson <medawson250 at yahoo.com<mailto:medawson250 at yahoo.com>>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org<mailto:reflector at tvbf.org>>
> Subject: Re: REFLECTOR: Air intake
> Message-ID: <0A6EE711-E0D6-46E4-B9B4-73F14DD0FB3E at yahoo.com<mailto:0A6EE711-E0D6-46E4-B9B4-73F14DD0FB3E at yahoo.com>>
> Content-Type: text/plain; charset="us-ascii"
>
> Well that makes me feel a little better.
> I do have to say mine climbs well but that is usually what excess
> horsepower does anyway.
> My apologies.
>
>
>
> Michael E Dawson
> ATCI CFII
>
>
> > On Mar 3, 2014, at 11:25 AM, Brett Ferrell <reflector at velocityxl.com<mailto:reflector at velocityxl.com>>
> wrote:
> >
> > Thanks for the shout-out... we do have a narrow deck Lycoming, but it
> dynoed at just over 300 HP, with high compression pistons...
> >
> > --
> > Brett Ferrell
> > reflector at velocityxl.com<mailto:reflector at velocityxl.com>
> >
> >
> >> On Mon, Mar 3, 2014, at 12:49 PM, Mike Dawson wrote:
> >> N44FV, a XLFG with a 260hp Lycoming, has been said to do about 180.
> This by Scott Swing who flew it as seen in a you tube video. Whether this
> was MPH or KTS really doesn't matter, Here is why. I own a XLFG with a
> 350hp Chevy V8. Other than downhill I have only seen 174KTS flat out!
> >> Now granted it is still in rough primer but I don't believe paint will
> make up for the airscoop I have hanging below the belly for the radiator.
> >>
> >> Our sleek airframes don't like stuff hanging off of them.
> >>
> >> N427VA a SERG 427 V8 useing NACA scoops to cool however, hauls ass.
> Bill and Brett did it right IMHO!
> >>
> >> Mike
> >> N104DD
> > _______________________________________________
> > To change your email address, visit
> http://www.tvbf.org/mailman/listinfo/reflector
> >
> > Visit the gallery! www.tvbf.org/gallery<http://www.tvbf.org/gallery>
> > user:pw = tvbf:jamaicangoose
> > Check new archives: www.tvbf.org/pipermail<http://www.tvbf.org/pipermail>
> > Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
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> ------------------------------
>
> _______________________________________________
> Visit the gallery! tvbf:jamaicangoose
>
> End of Reflector Digest, Vol 108, Issue 5
> *****************************************
>
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------------------------------
Message: 2
Date: Tue, 4 Mar 2014 14:50:11 -0500
From: "Richard J. Gentil" <richard at naples-air-center.com<mailto:richard at naples-air-center.com>>
To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org<mailto:reflector at tvbf.org>>
Subject: Re: REFLECTOR: Air intake
Message-ID:
<6F7CA695-B110-4A0B-BDE7-6A007E1C0DD5 at naples-air-center.com<mailto:6F7CA695-B110-4A0B-BDE7-6A007E1C0DD5 at naples-air-center.com>>
Content-Type: text/plain; charset="us-ascii"
My IO-390 had the intake facing the prop so I had to come up with a solution to getting air to it. I took the two armpit scoops, but them to make a single scoop which I mounted to the rear of the cowling. I also have to push out the bottom of the cowl because the intake on the engine hung down just slightly too low.
I used a Cessna C-172 bracket filter which you can see in the pictures.
Here are some of my old construction photos:
Richard
Sent from my iPhone 5 Classic
> On Mar 4, 2014, at 2:03 PM, Mel Bina <pusherpilot1 at gmail.com<mailto:pusherpilot1 at gmail.com>> wrote:
>
> Air intake.<a005_5 (Med).jpg>
>
>
>> On Tue, Mar 4, 2014 at 12:01 PM, Mel Bina <pusherpilot1 at gmail.com<mailto:pusherpilot1 at gmail.com>> wrote:
>> Attached is a photo of my intake. It was a Velocity part that I modified. The intake fed directly into a filter box (photo attached) and into the fuel servo.
>>
>> Mel Bina<a004_4 (Med).jpg>
>>
>>
>>> On Mon, Mar 3, 2014 at 5:57 PM, Mike Dawson <medawson250 at yahoo.com<mailto:medawson250 at yahoo.com>> wrote:
>>> Well that makes me feel a little better.
>>> I do have to say mine climbs well but that is usually what excess horsepower does anyway.
>>> My apologies.
>>>
>>>
>>>
>>> Michael E Dawson
>>> ATCI CFII
>>>
>>>
>>>> On Mar 3, 2014, at 11:25 AM, Brett Ferrell <reflector at velocityxl.com<mailto:reflector at velocityxl.com>> wrote:
>>>>
>>>> Thanks for the shout-out... we do have a narrow deck Lycoming, but it dynoed at just over 300 HP, with high compression pistons...
>>>>
>>>> --
>>>> Brett Ferrell
>>>> reflector at velocityxl.com<mailto:reflector at velocityxl.com>
>>>>
>>>>
>>>>> On Mon, Mar 3, 2014, at 12:49 PM, Mike Dawson wrote:
>>>>> N44FV, a XLFG with a 260hp Lycoming, has been said to do about 180. This by Scott Swing who flew it as seen in a you tube video. Whether this was MPH or KTS really doesn't matter, Here is why. I own a XLFG with a 350hp Chevy V8. Other than downhill I have only seen 174KTS flat out!
>>>>> Now granted it is still in rough primer but I don't believe paint will make up for the airscoop I have hanging below the belly for the radiator.
>>>>>
>>>>> Our sleek airframes don't like stuff hanging off of them.
>>>>>
>>>>> N427VA a SERG 427 V8 useing NACA scoops to cool however, hauls ass. Bill and Brett did it right IMHO!
>>>>>
>>>>> Mike
>>>>> N104DD
>>>
>>>> _______________________________________________
>>>> To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
>>>>
>>>> Visit the gallery! www.tvbf.org/gallery<http://www.tvbf.org/gallery>
>>>> user:pw = tvbf:jamaicangoose
>>>> Check new archives: www.tvbf.org/pipermail<http://www.tvbf.org/pipermail>
>>>> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>>>
>>> _______________________________________________
>>> To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
>>>
>>> Visit the gallery! www.tvbf.org/gallery<http://www.tvbf.org/gallery>
>>> user:pw = tvbf:jamaicangoose
>>> Check new archives: www.tvbf.org/pipermail<http://www.tvbf.org/pipermail>
>>> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>
> _______________________________________________
> To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
>
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> user:pw = tvbf:jamaicangoose
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------------------------------
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End of Reflector Digest, Vol 108, Issue 8
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