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[122.148.12.41]) by smtp.gmail.com with ESMTPSA id dg2sm29958016pbb.9.2015.10.07.13.41.53 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 07 Oct 2015 13:41:54 -0700 (PDT) Content-Type: multipart/alternative; boundary=Apple-Mail-A3083476-004A-43D0-B197-F01C53BCEA3D Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) Subject: Re: [FlyRotary] Re: To P or not... Message-Id: Date: Thu, 8 Oct 2015 06:41:50 +1000 References: In-Reply-To: To: Rotary motors in aircraft X-Mailer: iPad Mail (12F69) --Apple-Mail-A3083476-004A-43D0-B197-F01C53BCEA3D Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Hi bill I had a rotary engine rebuilder here in Australia do the boring and placemen= t of the p ports, I could find out exactly where they were placed if you lik= e, as for the extra ports they were jammed with aluminium foil to a depth of= approx 20 mm from the iron surface and then jb weld filled theme approx .5m= m from the surface. The water jackets directly around the ports were also filled with job weld f= lush with the housings, so far to date I have pulled the engine apart after a= bout 60 hrs to rectify a heating issue I had ( my fault, when I rebuilt it o= riginally I had swapped the rotors around doh, was getting warmer than it sh= ould due to more exhaust overlap) I'll see if I can find some pictures of my ports before I installed them Cheers Sent from my iPad > On 8 Oct 2015, at 1:17 am, Bill Bradburry wr= ote: >=20 > Christian, > =20 > While you are doing that, you could also include some info on your pportin= g of the Renesis. How did you know where to bore the holes for proper timin= g and how did you seal the water jacket? I assume that you just plugged up t= he original ports with JB weld or something? > =20 > Thanks, > One of the other Bills > =20 > From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]=20 > Sent: Wednesday, October 07, 2015 9:04 AM > To: Rotary motors in aircraft > Subject: [FlyRotary] Re: To P or not... > =20 > can you give details on your custom built hotdog with inox? baffling. > =20 > Thanks > Bill Schertz > =20 > From: Christian And Tam > Sent: Tuesday, October 06, 2015 11:08 PM > To: Rotary motors in aircraft > Subject: [FlyRotary] Re: To P or not... > =20 > I would agree, yes it worked out to be allot more simpler running 2 x 2" r= unners than playing with 4 in my opinion and easier to manufactur etc > =46rom modifying my engine from a not so good 6 port intake to a simple 2 p= ort intake I gained a good 30-40 hp and 15 k top end > The noise also isn't that bad on my renises as I've attached a custom buil= t hotdog underneath with inox baffling which works well >=20 >=20 > Sent from my iPhone >=20 >> On 7 Oct 2015, at 1:34 pm, Mark McClure wro= te: >> Trying to ensure I have a complete knowledge before I make my decision, >> =20 >> The P port as shown for the website is exactly what we are looking for. S= traight forward power at high rpm. The noise is a factor of energy output w= hich is the same.=20 >> =20 >> If I tune a 4 port runner system and get x amount of air into the engine I= give y amount of fuel and I have z amount of power and engine exhaust/noise= to handle. >> =20 >> If I use a P port and get x amount of air and give y amount of fuel it is= the exact same z output. It was just easier to get x amount of air into th= e system. >> =20 >> Or am I completely off base. >> =20 >>=20 >>=20 >>> On Oct 6, 2015, at 2:17 PM, William Jepson = wrote: >>> Bob, >>> One thing that everyone should get clear is that for aircraft PPorts are= almost always superior. At higher RPMs. Also Pports will idle just fine. Go= od balance and vibration control are the key to good idle. The engine won't m= ake a lot of power at low rpm but that isn't a problem for an aircraft. The r= otary makes a better aircraft engine than a car engine! >>>=20 >>> Bill Jepson >>>=20 >>> On Oct 6, 2015 9:14 AM, "Rogers, Bob J." w= rote: >>> You should read the description of the effects of P-porting at this webs= ite. See bottom entry. http://www.mazdarotary.net/porting.htm And it is l= oud!!! See https://www.youtube.com/watch?v=3DJebl2pWaiWI >>>=20 >>> Bob J. Rogers >>>=20 >>> -----Original Message----- >>> From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] >>> Sent: Tuesday, October 06, 2015 10:33 AM >>> To: Rotary motors in aircraft >>> Subject: [FlyRotary] To P or not... >>>=20 >>> I understand the benefits of P porting the engine. And I think I know t= he answer to my question but thought I'd verify. >>>=20 >>> Looking for 180-200 hp. I have a freshly overhauled 2004 4 port 13b. >>> If the intake and exhaust are built right I should have no problem getti= ng that power NA. >>>=20 >>> If I P port the intake it will be easier to make 200 or more. however it= is just easier to get air into the engine, and therefore more fuel. But it i= s not by any means more fuel efficient? >>>=20 >>> So therefore if I don't need the power I don't need to P port. >>>=20 >>> Mark >>>=20 >>>=20 >>> -- >>> Homepage: http://www.flyrotary.com/ >>> Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/Li= st.html >>>=20 >>>=20 >>>=20 >>> -- >>> Homepage: http://www.flyrotary.com/ >>> Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/Li= st.html --Apple-Mail-A3083476-004A-43D0-B197-F01C53BCEA3D Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Hi bill

I had= a rotary engine rebuilder here in Australia do the boring and placement of t= he p ports, I could find out exactly where they were placed if you like, as f= or the extra ports they were jammed with aluminium foil to a depth of approx= 20 mm from the iron surface and then jb weld filled theme approx .5mm from t= he surface.
The water jackets directly around the ports were also f= illed with job weld flush with the housings, so far to date I have pulled th= e engine apart after about 60 hrs to rectify a heating issue I had ( my faul= t, when I rebuilt it originally I had swapped the rotors around doh, was get= ting warmer than it should due to more exhaust overlap)

=
I'll see if I can find some pictures of my ports before I installed the= m

Cheers


Sent from my iPad
<= div>
On 8 Oct 2015, at 1:17 am, Bill Bradburry <flyrotary@lancaironline.net> wrote:

<= /div>
=

Christian,

=

 

While you are doing that, you could als= o include some info on your pporting of the Renesis.  How did you know wh= ere to bore the holes for proper timing and how did you seal the water jacket?  I assume that you just plugged up the original ports with JB w= eld or something?

 

Thanks,

One of the other Bills

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironli= ne.net]
Sent: Wednesday, October 07, 2= 015 9:04 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: To P= or not...

 

can you give d= etails on your custom built hotdog with inox? baffling.

 

Thanks

Bill Schertz<= /p>

 

Sent: Tuesday, October 06, 2015 11:08 PM

Subject: [FlyRotary] Re: To P or not...

 

I would agree,= yes it worked out to be allot more simpler running 2 x 2" runners than playing with 4 in my opinion and  easier to manufactur etc

=46rom modifyi= ng my engine from a not so good 6 port intake to a simple 2 port intake I gained a= good 30-40 hp and 15 k top end

The noise also= isn't that bad on my renises as I've attached a custom built hotdog underneath wit= h inox baffling which works well



Sent from my iPhone


On 7 Oct 2015, at 1:34 pm, Mark McClure <flyrotary@lancaironline.net> wrote:

Trying to ensu= re I have a complete knowledge before I make my decision,

 

The P port as s= hown for the website is exactly what we are looking for. Straight forward power a= t high rpm.  The noise is a factor of energy output which is the same.&nb= sp;

 

If I tune a 4 p= ort runner system and get x amount of air into the engine I give y amount of fue= l and I have z amount of power and engine exhaust/noise to handle.<= /span>

 

If I use a P p= ort and get x amount of air and give y amount of fuel it is the exact same z output.  It was just easier to get x amount of air into the system.

 

Or am I comple= tely off base.

 


On Oct 6, 2015, at 2:17 PM, William Jepson <flyrotary@lancaironline.net> wrote:

Bob,
One thing that everyone should get clear is that for aircraft PPorts are alm= ost always superior. At higher RPMs. Also Pports will idle just fine. Good balan= ce and vibration control are the key to good idle. The engine won't make a lot o= f power at low rpm but that isn't a problem for an aircraft. The rotary makes a= better aircraft engine than a car engine!

Bill Jepson

On Oct 6, 2015= 9:14 AM, "Rogers, Bob J." <flyr= otary@lancaironline.net> wrote:

You should rea= d the description of the effects of P-porting at this website.  See bottom entry.   http://www.mazdarotary.net/porting.htm  And it is loud!!!  See https://www.youtube.com/watch?v=3DJebl2pWaiWI

Bob J. Rogers

-----Original Message-----
From: Rotary motors in aircraft= [mailto:flyrotary@lancaironli= ne.net]
Sent: Tuesday, October 06, 2015 10:33 AM
To: Rotary motors in aircraft Subject: [FlyRotary] To P or not...

I understand the benefits of P porting the engine.  And I think I know t= he answer to my question but thought I'd verify.

Looking for 180-200 hp.  I have a freshly overhauled 2004 4 port 13b. If the intake and exhaust are built right I should have no problem getting t= hat power NA.

If I P port the intake it will be easier to make 200 or more. however it is just easier to get air into the engine, and therefore more fuel. But it is n= ot by any means more fuel efficient?

So therefore if I don't need the power I don't need to P port.

Mark


--
Homepage:  http= ://www.flyrotary.com/
Archive and UnSub:   http://mail.lancaironline.net:81= /lists/flyrotary/List.html



--
Homepage:  http= ://www.flyrotary.com/
Archive and UnSub:   http://mail.lancaironline.net:81= /lists/flyrotary/List.html

= --Apple-Mail-A3083476-004A-43D0-B197-F01C53BCEA3D--