X-Virus-Scanned: clean according to Sophos on Logan.com From: "Charlie England" Received: from mail-yw0-f174.google.com ([209.85.161.174] verified) by logan.com (CommuniGate Pro SMTP 6.1.10) with ESMTPS id 8734277 for flyrotary@lancaironline.net; Wed, 15 Jun 2016 16:07:32 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.161.174; envelope-from=ceengland7@gmail.com Received: by mail-yw0-f174.google.com with SMTP id c72so23846837ywb.1 for ; Wed, 15 Jun 2016 13:07:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=+JZ7gnDw7WZynbkssc05YXW/S07wdFH4qGpt1/8SuVk=; b=iVDE5+0V00iC4v5QkbIliSzRJbvdvx7iYja2sTuuvqm0zmumEUr8JsXGa4w7lkd1wb nccExxoD/x5c6aiI/wQE4fDJ46IbS0XhxTXCY95ZEAdZFq5h8B3dwqlKbv9Cf88MThLb lNsiu5KfuwKmvVjetXgIAMP9K6MkCsLEt9XcSjwKuf5R5paKuhdH7tZ7I0HYQaSR2HCe LfZS9laFPYVSYRXo0kF4vHorSgDBdrIrNPB8qET5iCVndISIWCsAGomPcFwS889iGzOa KsXOtbCSa+G7ldfasEwUccR84LHBUCOg/KrS7MkRZ/3DmZM+BTxeN0RmABLKikiqrh1p LD8Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=+JZ7gnDw7WZynbkssc05YXW/S07wdFH4qGpt1/8SuVk=; b=VBesoTgSIopRTvLW9HPy6ISE6lsaHiRjRlVXb9ozFrFwqzUM5FtnYEXBHgxnHhMGV6 fndWEOUYcSWoNB9oGY7R0wpkOb+YBJKQQSNQTTNAHW21yX62smL/KN8ZOLl4vc5xWRvM fUsDeVO+XP5Gbk/fUMrLO8zskKaBM/xKWxsSFNP9Xn8YaFwTjF4p72TLlDe70b7trYIi SmMyq2ZthLkYXTbz0ociNZDmn+zXrJHQJnnVwY6COMGeMNhq9uoL+Jq5QM8XZQ7OlOx6 izXb1hQ1+wOoyny5XXsAr9oD5bIZxkdbxe8QCCdY+GMYIMDVtVaZlSL52CMah/wYyi2b SbdA== X-Gm-Message-State: ALyK8tJQIfpfSkyqF4g2HKGZYpJhXDNsW66D2VXRqAZEzOSOPY+rDBx52yncSxkYgKqJaczdfPKQCMJnPioMuQ== X-Received: by 10.37.192.208 with SMTP id c199mr329548ybf.89.1466021234047; Wed, 15 Jun 2016 13:07:14 -0700 (PDT) MIME-Version: 1.0 Received: by 10.129.79.76 with HTTP; Wed, 15 Jun 2016 13:07:13 -0700 (PDT) In-Reply-To: References: Date: Wed, 15 Jun 2016 15:07:13 -0500 Message-ID: Subject: Re: [FlyRotary] Re: Mistral To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=001a11461deae3812f053556aa84 --001a11461deae3812f053556aa84 Content-Type: text/plain; charset=UTF-8 Now that's an interesting data point that I either didn't know about or forgot. Tracy, do you recall the formula you used to calculate runner length? All the sites I've seen (including PL's stuff) seem to use typical calcs for 4 stroke piston engines, which doesn't make sense to me. Piston engines fire every other rev, but the rotary fires every rev. Did you use the 'standard' calcs and assume that you were getting a higher multiple reflection, or did you use rotary-specific calcs? Or, just copy the stock Renesis manifold's runner length for your desired rpm? Charlie On Tue, Jun 14, 2016 at 2:17 PM, Tracy wrote: > Right Charlie, those were the short runners used for the SUN 100 race. > You could feel the engine come 'on the pipe' around 7400 Rpm which is where > I ran it for the race. All other times I use the longer pipes with a > lower peak HP rpm. > > Tracy > > Sent from my iPad > > > On Jun 14, 2016, at 10:26, Charlie England > wrote: > > > >> On 6/14/2016 9:52 AM, Tom Mann wrote: > >> Any Idea as to where one might find this information? > >> > >> -----Original Message----- From: Charlie England > >> Sent: Tuesday, June 14, 2016 9:43 AM > >> To: Rotary motors in aircraft > >> Subject: [FlyRotary] Re: Mistral > >> > >> It's not that hard to make an intake that will make great power. Look at > >> Tracy's setup. Might not be aesthetically beautiful to some eyes, but to > >> me, function is beauty. I don't know of any N/A 2 rotor that's as fast > >> as his -4, or as efficient at lower speeds. And really simple to make. > >> > >> Charlie > > > > Hope Tracy doesn't mind; here's a shot of the Renesis manifold. I > believe that the tubes inside the 'box' were later extended to be near the > opposite wall. IIRC, Tracy said that the tubes are ~11" from the face of > the block to the end of the bellmouth. > > > > You can see old versions of the RWS website by using the Wayback Machine > & picking a date. > > > > Charlie > > --001a11461deae3812f053556aa84 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Now that's an interesting data point that I either did= n't know about or forgot.=C2=A0

Tracy, do you recall= the formula you used to calculate runner length? All the sites I've se= en (including PL's stuff) seem to use typical calcs for 4 stroke piston= engines, which doesn't make sense to me. Piston engines fire every oth= er rev, but the rotary fires every rev. Did you use the 'standard' = calcs and assume that you were getting a higher multiple reflection, or did= you use rotary-specific calcs? Or, just copy the stock Renesis manifold= 9;s runner length for your desired rpm?

Charlie

On Tue, Jun 14, = 2016 at 2:17 PM, Tracy <flyrotary@lancaironline.net> wrote:
Right Charlie,=C2=A0 those were= the short runners used for the SUN 100 race.=C2=A0 You could feel the engi= ne come 'on the pipe' around 7400 Rpm which is where I ran it for t= he race.=C2=A0 =C2=A0All other times I use the longer pipes with a lower pe= ak HP rpm.

Tracy

Sent from my iPad

> On Jun 14, 2016, at 10:26, Charlie England <flyrotary@lancaironline.net> wrote:
>
>> On 6/14/2016 9:52 AM, Tom Mann wrote:
>> Any Idea as to where one might find this information?
>>
>> -----Original Message----- From: Charlie England
>> Sent: Tuesday, June 14, 2016 9:43 AM
>> To: Rotary motors in aircraft
>> Subject: [FlyRotary] Re: Mistral
>>
>> It's not that hard to make an intake that will make great powe= r. Look at
>> Tracy's setup. Might not be aesthetically beautiful to some ey= es, but to
>> me, function is beauty. I don't know of any N/A 2 rotor that&#= 39;s as fast
>> as his -4, or as efficient at lower speeds. And really simple to m= ake.
>>
>> Charlie
>
> Hope Tracy doesn't mind; here's a shot of the Renesis manifold= . I believe that the tubes inside the 'box' were later extended to = be near the opposite wall. IIRC, Tracy said that the tubes are ~11" fr= om the face of the block to the end of the bellmouth.
>
> You can see old versions of the RWS website by using the Wayback Machi= ne & picking a date.
>
> Charlie

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