X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from snt0-omc2-s24.snt0.hotmail.com ([65.55.90.99] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTP id 5606930 for flyrotary@lancaironline.net; Mon, 18 Jun 2012 22:54:32 -0400 Received-SPF: pass receiver=logan.com; client-ip=65.55.90.99; envelope-from=instructorbill@msn.com Received: from SNT136-W39 ([65.55.90.71]) by snt0-omc2-s24.snt0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4675); Mon, 18 Jun 2012 19:53:58 -0700 Message-ID: Return-Path: instructorbill@msn.com Content-Type: multipart/alternative; boundary="_0d22f60e-a95e-44fc-be70-21c72642ec96_" X-Originating-IP: [50.131.29.38] From: William Mason To: Subject: Re:buying a turbo Date: Mon, 18 Jun 2012 19:53:58 -0700 Importance: Normal MIME-Version: 1.0 X-OriginalArrivalTime: 19 Jun 2012 02:53:58.0885 (UTC) FILETIME=[C6447150:01CD4DC6] --_0d22f60e-a95e-44fc-be70-21c72642ec96_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Great shot David. I could recall from our discussion at GoldenWest that you were running a st= ock-housing BNR unit but couldn't recall what you said about the stage and = compressor specs. I think I will probably go with a T3 to T4 adapter with an external waste g= ate fitting and a different turbo. I'll shoot for something with a larger = turbine housing. =20 I'm thinking a T04b v trim compressor with a 1.15 a/r exhaust housing. If I= 'm reading correctly it's right in the wheelhouse. I'll check with a pro before buying though. Cheers! Bill From: David Leonard Subject: Re: [FlyRotary] Re: buying a turbo Date: Sun=2C 17 Jun 2012 12:26:06 -0700 To: Rotary motors in aircraft =09 =20 Hi Bill=2C I am not particularly an expert on turbos=2C so take everything I say with = a grain of salt. First=2C mine is not a T-3/T4 hybrid=2C and I would not r= ecommend one. Mine is a BNR stage 4=2C and that is all TO4 but uses a modi= fied stock turbine housing. My compressor is T04E-50trim. The general answer to your question is: yes that should work nicely - it is= pretty much what I use. A large external waste gate would be optimal=2C b= ut not necessary by any means. I do not have one - I use the internal wast= e gate that is probably inside the turbo you are looking at. The A/R in th= e stock housing is also less than optimal=2C but it sure makes for an nice = compact and off-the-shelf package and you won't notice any difference unles= s you plan on hard core racing. You will limit overboost by using the throttle judiciously. I never have u= sed full throttle=2C even at Reno. Turbo overspeed should not be a problem= for flying an RV-7=2C but you will have to keep the EGT down to prolong tu= rbine life. Do that by staying well rich or lean of peak EGT. =20 If you take that turbo=2C and cut off the waste-gate flapper door (making a= fixed exhaust bypass) then you have a very nice solution. I have another = turbo set up that way. Though it is not enough boost to use at Reno or imp= ress my friends=2C it does leave me with just enough boost at WOT to keep u= p with any C/S 180h.p. powered RV6/7 (and be faster than most). You still = have to keep EGT's away from peak=2C but then you never have to worry about= overboost or overspeed and it is a little more efficient as well. Now tha= t I am done with Reno=2C I will be re-installing that turbo next time I hav= e the engine apart (which will hopefully be a long time from now...). The = only difference between that turbo and my current turbo is the installation= of the stock waste-gate flapper/cover and the actuator. Careful=2C once y= ou take a dremel to that flapper door you can never put it back without a n= ew one and help from a welder. Hope that helps. BTW check out this pick from Golden West airshow last weekend! --=20 David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net On Sun=2C Jun 17=2C 2012 at 6:54 AM=2C Kelly Troyer wrot= e: Bill=2C =20 This needs to be answered by Dave Leonard (Our resident Reno Air Racer)..= ............He is flying a TO-3/TO-4 hybrid with much success and I bet can clue you in on what you have and what he ha= s that obviously works well.............. =20 Kelly Troyer Dyke Delta_"Eventually" 13B_RD1C_EC2_EM2 =20 =20 =20 On Sat=2C Jun 16=2C 2012 at 11:50 PM=2C William Mason wrote: Hello there gentlemen (ladies too)=2C=20 I have the opportunity to purchase a BNR stage 3 turbo mounted on a stock S= 5 FC manifold. =20 I'm not sure what the A/R is on the turbine housing=2C so I'm not sure if I= 'll be able to use it as-is. =20 If it's too low of an A/R I'll have to install another housing in order to= use it. *Important question*=20 If it's got a 35mm wastegate with an adjustable actuator=2C will I be able = to dump=20 enough exhaust energy to keep from overspeeding the turbo at cruise speeds= using=20 an RD-1B? I don't want to run too much boost and I won't need to. I've got a mild st= reetport and will be=20 mounting it on my RV7. Anything over 180 hp will be fine with me. =20 It's a modified stock turbocharger (hybrid) so really it's a t04b 60-1 (s= ome people are calling it a t04e) with an aggressively clipped h3 compressor. Is this too much turbo in a to= o-tight housing?=20 I wish this stuff made more sense to me but it doesn't. Thanks=20 Bill Mason RV7 13b EC2 RD1 = --_0d22f60e-a95e-44fc-be70-21c72642ec96_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Great shot David.


I could recall from our discussion at GoldenWe= st that you were running a stock-housing BNR unit but couldn't recall what = you said about the stage and compressor specs.


I think I will pr= obably go with a T3 to T4 adapter with an external waste gate fitting and a= different turbo.  =3BI'll shoot for something with a larger turbine ho= using.  =3B


I'm thinking a T04b v trim compressor with a 1.1= 5 a/r exhaust housing. If I'm reading correctly it's right in the wheelhous= e.


I'll check with a pro before buying though.


Cheers= !
Bill








From: David Leonard <=3Bwdle= onard@gmail.com>=3B

Subject: Re: [FlyRotary] Re: buying a turboDate: Sun=2C 17 Jun 2012 12:26:06 -0700
To: Rotary motors in aircraft &= lt=3Bflyrotary@lancaironline.net>=3B




Hi Bill=2C
I= am not particularly an expert on turbos=2C so take everything I say with a= grain of salt. First=2C mine is not a T-3/T4 hybrid=2C and I would not re= commend one. Mine is a BNR stage 4=2C and that is all TO4 but uses a modif= ied stock turbine housing. My compressor is T04E-50trim.

The genera= l answer to your question is: yes that should work nicely - it is pretty mu= ch what I use. A large external waste gate would be optimal=2C but not nec= essary by any means. I do not have one - I use the internal waste gate tha= t is probably inside the turbo you are looking at. The A/R in the stock ho= using is also less than optimal=2C but it sure makes for an nice compact an= d off-the-shelf package and you won't notice any difference unless you plan= on hard core racing.

You will limit overboost by using the throttle= judiciously. I never have used full throttle=2C even at Reno. Turbo over= speed should not be a problem for flying an RV-7=2C but you will have to ke= ep the EGT down to prolong turbine life. Do that by staying well rich or l= ean of peak EGT.

If you take that turbo=2C and cut off the waste-g= ate flapper door (making a fixed exhaust bypass) then you have a very nice = solution. I have another turbo set up that way. Though it is not enough b= oost to use at Reno or impress my friends=2C it does leave me with just eno= ugh boost at WOT to keep up with any C/S 180h.p. powered RV6/7 (and be fast= er than most). You still have to keep EGT's away from peak=2C but then you= never have to worry about overboost or overspeed and it is a little more e= fficient as well. Now that I am done with Reno=2C I will be re-installing = that turbo next time I have the engine apart (which will hopefully be a lon= g time from now...). The only difference between that turbo and my current= turbo is the installation of the stock waste-gate flapper/cover and the ac= tuator. Careful=2C once you take a dremel to that flapper door you can nev= er put it back without a new one and help from a welder.

Hope that h= elps.

BTW check out this pick from Golden West airshow last weekend!=

--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.R= otaryRoster.net
http://RotaryRoster.net

On Sun=2C Jun 17=2C 2012 = at 6:54 AM=2C Kelly Troyer <=3Bkeltro@gmail.com>=3B wrote:
Bill=2C
This needs to be answered by Dave Leonard (Our resident Reno Air R= acer)..............He is flying a TO-3/TO-4 hybrid
with much success and= I bet can clue you in on what you have and what he has that obviously work= s well..............

Kelly Troyer
Dyke Delta_"Eventually"
13B= _RD1C_EC2_EM2



On Sat=2C Jun 16=2C 2012 at 11:50 PM=2C Wil= liam Mason <=3Binstructorbill@msn.com>=3B wrote:


Hello there= gentlemen (ladies too)=2C


I have the opportunity to purchase a= BNR stage 3 turbo mounted on a stock S5 FC manifold.
I'm not sure wha= t the A/R is on the turbine housing=2C so I'm not sure if I'll be able to u= se it as-is.
If it's too low of an A/R I'll have to install another h= ousing in order to use it.




*Important question*

=
If it's got a 35mm wastegate with an adjustable actuator=2C will I be a= ble to dump
enough exhaust energy to keep from overspeeding the turbo = at cruise speeds using
an RD-1B?


I don't want to run too muc= h boost and I won't need to. I've got a mild streetport and will be
mo= unting it on my RV7. Anything over 180 hp will be fine with me.

<= br> It's a modified stock turbocharger (hybrid) so really it's a t04b 60-1= (some people are calling it a t04e)
with an aggressively clipped h3 com= pressor. Is this too much turbo in a too-tight housing?


I wis= h this stuff made more sense to me but it doesn't.


Thanks
Bi= ll Mason
RV7 13b EC2 RD1
= --_0d22f60e-a95e-44fc-be70-21c72642ec96_--