=20 ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of John Sent: Wednesday, May 26, 2010 2:36 PM To: Rotary motors in aircraft Subject: [FlyRotary] Emailing: 3 view w-10 003, first flight =20 My most humble thank you to flyrotary and all you fine folks that have helped bring my project to flight. Ed and many others whom I won't try to name here because I would miss many. The plane is a Wittman Tailwind W-10, empty wt. is 981 and it is a tri-gear, Wt. is within 6 #'s of similar trikes w/ 0-320 engines. I have the thermostat in the engine because most of the year it is not very hot, if we get 50 days with the temperature over 70, we have had a hot summer, not a lot of beach bunny activity. 7-1 I'll be 74 and have realized my dream, now it's all gravy. Again, thanks guys!! JohnD Your message is ready to be sent with the following file or link attachments: 3 view w-10 003 ------_=_NextPart_001_01CAFD4A.25D82F14 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Chris,

I suspect the rpm drop from 6200 to 6000 is intake = heat=20 saturation. Just a guess. Were is your waste gate spring? After your = intercooler=20 or before it? Glad to see your making progress. =

Bobby

From: Rotary motors in aircraft=20 [mailto:flyrotary@lancaironline.net] On Behalf Of Chris=20 Barber
Sent: Wednesday, May 26, 2010 8:51 PM
To: = Rotary=20 motors in aircraft
Subject: [FlyRotary] Rotary HP = reviisted....now=20 that I know more about it all...kinda.

I know this must have been discussed, but perhaps more in passing = or in=20 some of Tracy's literature (now kinda dated, = especially with=20 some of the strides he continues to make), but what is the conventional = wisdom=20 as to rotary horsepower? I know when I first started looking into = it, oh=20 many years ago, it seemed the impression I got was that you could pretty = easily=20 achieve 200 hp, however, that is now a bit lower. Some of the = tricks to=20 get the higher HP was mild and medium porting, bridge, "J" and "P"=20 porting. Then there was the option of turbo...the one, in = combination with=20 a medium street port, I chose.

What say Ye?

When started today, mine was turning about 6200 rpm at 35 MP (with = a 3 lb=20 spring in the wastegate ).....it surged forward against the = chocks=20 and breaks. IVO prop full fine. Nice feel of = power even=20 if it likes to heat up fast in 90 degree weather like this.

Also, I think this was discussed before too, when I=20 go WOT my engine develops up to about = 6250 rpm,=20 but then drops a couple/few hundred rpm to usually just under = 6000....sometimes=20 just above. Thoughts? Ed, (perhaps Al)it seems you may have = chimed=20 in before. Regrettably, when I search = the archives I=20 tend to get frustrated due to thread drift.

I heard a lot about porting when I was initially investigating all = this and=20 I chose to use a medium street port. I = let Mazdatrix do=20 the work. That being said, I have read all but nothing on others = porting=20 their engines (other than a LOT from PL on P ports). Since = standard=20 porting does not reportedly effect reliability, only, potentially=20 low low idle (I can idle as low as about 1300 rpm = when warm=20 smoothly) why is it not discussed and/or utilized more?

Just curious guys/gals. Discuss <g>

All the best,

Chris Barber

Houston, GSOT

From: Rotary motors in aircraft = [flyrotary@lancaironline.net]=20 on behalf of Ed Anderson [eanderson@carolina.rr.com]
Sent: = Wednesday,=20 May 26, 2010 5:15 PM
To: Rotary motors in = aircraft
Subject:=20 [FlyRotary] Re: Emailing: 3 view w-10 003, first = flight

Always loved = the lines=20 of a Tailwind – in fact, I have the plans and license to build a = W-10 sitting on=20 my book shelf. Unfortunately, I doubt I’ll ever get around = to=20 it.

Ok with = thermostat in=20 the system holding it at 190F – we really won’t know how = much reserve capacity=20 you have in your cooling system until the power goes = up.

I agree with = George,=20 200HP out of an N/A 13B is really pushing it. I think 180HP is a = more=20 realistic expectation – but, hey you never know. It amazing = how power goes=20 up when things come together.

Enjoy and fly = safe.=20

Ed=20 Anderson

Rv-6A N494BW=20 Rotary Powered

Matthews,=20 NC

eanderson@carolina.rr.com

http://www.andersonee.com

http://www.dmack.net/mazda/index.html<= /P>

http://www.flyrotary.com/

http://members.cox.net/rogersda/rotary/configs.htm#N494BW

http://www.rotaryaviation.com/Rotorhead%20Truth.htm

From: Rotary=20 motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of John
Sent: Wednesday, May 26, 2010 = 2:36=20 PM
To: Rotary motors = in=20 aircraft
Subject: = [FlyRotary]=20 Emailing: 3 view w-10 003, first flight

My most humble thank you = to=20 flyrotary and all you fine folks that have helped bring my = project to=20 flight. Ed and many others whom I won't try to name here because I = would=20 miss many. The plane is a Wittman Tailwind W-10, empty wt. is 981 = and it=20 is a tri-gear, Wt. is within 6 #'s of similar trikes w/ 0-320=20 engines. I have the thermostat in the engine because most of the = year it=20 is not very hot, if we get 50 days with the temperature over 70, we have = had a=20 hot summer, not a lot of beach bunny activity. 7-1 I'll be 74 and = have=20 realized my dream, now it's all gravy. Again, thanks guys!! =20 JohnD

Your message is = ready to be=20 sent with the following file or link attachments:
3 view w-10=20 003

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