From: "Stephen Izett stephen.izett@gmail.com" <flyrotary@lancaironline.net>
Received-SPF: pass
 receiver=logan.com; client-ip=209.85.215.171; envelope-from=stephen.izett@gmail.com
Content-Type: text/plain;
	charset=utf-8
Content-Transfer-Encoding: quoted-printable
Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.11\))
Subject: Re: [FlyRotary] Re: Water Pump
Date: Sat, 16 May 2020 10:11:58 +0800
References: <list-242059@logan.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
In-Reply-To: <list-242059@logan.com>
Message-Id: <0635EE8D-D0C7-4D9D-9FC6-137F02E0FD1C@gmail.com>

Hi David.

What does your intake look like and what length is it?

Thanks

Steve

> On 15 May 2020, at 10:30 pm, David COOK hoursaway1@comcast.net =
<flyrotary@lancaironline.net> wrote:
>=20
> Find who is finishing races, I use oversized pully, 13B, 6250rpm =
takeoff, 5500rpm cruise 165kts, aprox.8gph, RV6A Rotary.
>> On May 15, 2020 at 10:16 AM "Stephen Izett stephen.izett@gmail.com" =
<flyrotary@lancaironline.net> wrote:
>>=20
>>=20
>> Thanks Matt.
>> Steve
>>=20
>>> On 15 May 2020, at 10:14 pm, Matt Boiteau mattboiteau@gmail.com =
<flyrotary@lancaironline.net> wrote:
>>>=20
>>> There's so much information all over the place, it's all good and =
bad. On the car forums, there is no consensus. Some same stock is just =
fine, some say to change the pulley on stock, and some swear by the =
Mazmart RE-medy. Then some swear on belt vs electric. lol. It's all over =
the place.I have both the Mazmart and oversized pulley on stock. Once I =
have a baseline of data, I'll switch between the two and compare logs.
>>>=20
>>> With the 2.85 psru, "I think" you'll be okay with a stock waterpump.
>>> With Neil's 3.17 psru, you'll want to do pulley swap or mazmart
>>>=20
>>> - Matt Boiteau
>>>=20
>>>=20
>>> On Fri, May 15, 2020 at 10:02 AM Stephen Izett =
stephen.izett@gmail.com <flyrotary@lancaironline.net> wrote:
>>> Thanks guys.
>>> I=E2=80=99ve heard various reports, but i had thought the consensus =
was the Renesis pump didn=E2=80=99t cavitate till past 8K.
>>> I do want to be able to sustain 7500rpm for at least a few minutes.=20=

>>> Should I change to a larger pump pulley or undersize the eccentric =
shaft pulley?=20
>>> Is there clear evidence from the racers and not simply the producers =
of pumps etc.?
>>> I do have a larger pulley on the Alternator.=20
>>> Cheers.
>>> Steve
>>>=20
>>>> On 15 May 2020, at 9:47 pm, Bobby J. Hughes bhughes@qnsi.net =
<flyrotary@lancaironline.net> wrote:
>>>>=20
>>>> Steve,
>>>>=20
>>>> I didn=E2=80=99t see any reason to replace the stock 2004 water =
pump. An aftermarket impeller / pump is available but the car forums =
indicate many have failed in a short period of time.  =
https://shop.mazmart.com/en/rx8-re-medy-high-flow-water-pump          I  =
used an underdrive main pulley from the beginning. Unorthodox Racing I =
believe.
>>>>=20
>>>> Bobby
>>>> From: Rotary motors in aircraft =
[mailto:flyrotary@lancaironline.net]=20
>>>> Sent: Friday, May 15, 2020 6:58 AM
>>>> To: Rotary motors in aircraft
>>>> Subject: [FlyRotary] Re: Water Pump
>>>>=20
>>>> Thanks Todd.
>>>> Enjoyed your reply. Thanks a heap.
>>>>=20
>>>> Has anyone got definitive knowledge re the 2004 renesis 13b water =
pump.=20
>>>> Is there a replacement with significantly better flow or lower =
cavitation that I should retrofit to maximise cooling capacity?
>>>>=20
>>>> Steve
>>>>=20
>>>>> On 15 May 2020, at 6:28 pm, Todd Bartrim bartrim@gmail.com =
<flyrotary@lancaironline.net> wrote:
>>>>>=20
>>>>> Well, I gotta admit that I'm a stubborn SOB. and way back when, =
another stubborn SOB whom I shouldn't name, but his initials are Paul =
Lamar.... was adamant that no way ever on God's green earth would an =
electric water water pump have any hope of cooling anything bigger than =
a lawnmower. So basically... it was challenge accepted!=20
>>>>> Now at the time there was another Ozzie frequenting this list by =
the name of Leon Promet who had some rotary racing experience and was a =
big proponent of the EWP. (RIP Leon) But he was also a great talker and =
an entertaining fellow whom I enjoyed reading his many post on varied =
aspects of rotary engines. The EWP also promised a solution to a few =
other issues that were certainly not insurmountable, such as clearance =
for the mechanical water pump which usually resulted in an unsightly and =
draggy cowl bump. At the time, that seemed like something I wanted to =
avoid, due to drag and all that $%^* but after figuring out that I never =
should've built an iAirplane like all the other latte sucking so called =
experimenters out there, I started to realize that a Van's RV, while it =
is a great design and is perfect for many, many assemblers out there, =
it's probably not the plane I should've built. Don't get me wrong, it's =
a great plane and lot's of fun, but it's not really the plane I should =
be flying. The attached picture shows the automotive equivalent to my =
airplane.
>>>>> Anyways, at the end of the day, I've got a fast airframe with big =
draggy bushwheels, that while not quite a STOL plane can still cruise =
sorta fast, blah, blah, blah, blah.....
>>>>> So anyways, I like it, I think the EWP is a great idea and it does =
work. And I'm an experimenter. Enough said.
>>>>>=20
>>>>> Todd Bartrim (I should've went to bed instead of pouring a rum and =
answering that email.... )
>>>>>=20
>>>>>=20
>>>>> On Fri, May 15, 2020 at 1:20 AM Stephen Izett =
stephen.izett@gmail.com <flyrotary@lancaironline.net> wrote:
>>>>> Hi Todd. What was the logic behind the choice to go with an =
electric water pump.
>>>>> Was it concerns over cavitation at high rpm or as a backup.
>>>>> Sorry if this has already been talked through.
>>>>>=20
>>>>> Steve Izett
>>>>>=20
>>>>>> On 15 May 2020, at 3:40 pm, Todd Bartrim bartrim@gmail.com =
<flyrotary@lancaironline.net> wrote:
>>>>>>=20
>>>>>> Yup, just the stock wheel. the turbo is an Hitachi 18S-2S. I =
still think you should take LeRoux up on his offer of that turbo. You =
could either modify the turbo manifold or use it to model a custom made =
manifold. Either way would likely be easier than trying to fit an =
aftermarket turbo. There was not a stock Renesis turbo so you're not =
gonna find anything easier.
>>>>>> There's always something like this =
https://www.rx8performance.com/products/rx-8performanceturbokit and it =
doesn't look too complicated, or heavy, or expensive..... nahh, I'd =
still find a way to attach that old gen turbo to your Renesis.=20
>>>>>> I'm using the Davies Craig EWP130 =
https://daviescraig.com/product/ewp130-12v-130lpm34gpm-remote-electric-wat=
er-pump-8180/ewp130-electric-water-pump-alloy-12v-8180
>>>>>>=20
>>>>>> Todd Bartrim (rebuilding a water pump right now, but it's a well =
water pump)
>>>>>>=20
>>>>>>=20
>>>>>> On Thu, May 14, 2020 at 3:20 PM 12348ung@gmail.com =
<flyrotary@lancaironline.net> wrote:
>>>>>> Todd,
>>>>>>=20
>>>>>> Are you running the standard hot section turbine wheel? Do you =
have the hitachi RX7 turbo? Also what model water pump did you use??
>>>>>>=20
>>>>>> Regards,
>>>>>>=20
>>>>>> Neil.
>>>>>>=20
>>>>>=20
>>>>>=20
>>>>> --
>>>>> Homepage: http://www.flyrotary.com/
>>>>> Archive and UnSub: =
http://mail.lancaironline.net:81/lists/flyrotary/List.html
>>>>> <63483b041c5ef2d3201d681a3cc1a171.jpg>--
>>>>> Homepage: http://www.flyrotary.com/
>>>>> Archive and UnSub: =
http://mail.lancaironline.net:81/lists/flyrotary/List.html
>>>>=20
>>>>=20
>>>> --
>>>> Homepage: http://www.flyrotary.com/
>>>> Archive and UnSub: =
http://mail.lancaironline.net:81/lists/flyrotary/List.html
>>>>=20
>>>>=20
>>>> Disclaimer
>>>>=20
>>>> The information contained in this communication from the sender is =
confidential. It is intended solely for use by the recipient and others =
authorized to receive it. If you are not the recipient, you are hereby =
notified that any disclosure, copying, distribution or taking action in =
relation of the contents of this information is strictly prohibited and =
may be unlawful.
>>>>=20
>>>> This email has been scanned for viruses and malware, and may have =
been automatically archived by Mimecast Ltd, an innovator in Software as =
a Service (SaaS) for business. Providing a safer and more useful place =
for your human generated data. Specializing in; Security, archiving and =
compliance. To find out more Click Here.
>>>>=20
>>>=20
>>>=20
>>> --
>>> Homepage:  http://www.flyrotary.com/
>>> Archive and UnSub:   =
http://mail.lancaironline.net:81/lists/flyrotary/List.html
>>=20
>>=20
>> --
>> Homepage:  http://www.flyrotary.com/
>> Archive and UnSub:   =
http://mail.lancaironline.net:81/lists/flyrotary/List.html
>=20
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:   =
http://mail.lancaironline.net:81/lists/flyrotary/List.html