Bill,

 

 Thanks very much for the compliment. It sounds like you are on the right track with copying Tracy's RV8 setup. The RV4 doesnt have the width for that sort of arrangement.

 

 I'm not sure what pics you saw. My cowl has gone through multiple revisions since it was built originally. The major changes were to accomodate the final oil cooler install and tweaks to gain a little exhaust clearance. In spite of multiple tries I finally gave up trying to contain the oil cooler within the original cowl line and just added another scoop on the bottom. As a result the cowl has gained some weight and some ugliness. There may be a new cowl in my future.

 

I cant remember inlet and outlet sizes. Its been a few years. Attached are pictures of the current setup, cowled and uncowled so you can see the ducting.

 

Yes, I was having intermittent issues with lost data in the EC2. I finally figured out how to make the problem occur with at least some predictability. After finding the incorrectly seated chip in the EC2 and reseating it I have not had a reoccurance of the problem in several hours of ground testing.

 

 

----- Original Message -----

From: "Bill Bradburry" <bbradburry@bellsouth.net>

To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>

Sent: Saturday, August 08, 2009 9:53 AM

Subject: [FlyRotary] Re: T-shirt design

> Hi Mike,
> I went back thru your posts and found a couple of pics of your "homemade"
> cowl...WOW! What an excellent job!  I really like the elimination of the
> "Chipmunk with his cheeks full of nuts" look that the RV4 has..(Sorry guys
> :>) )
> I didn't find any pics of the innerds of your install...Do you have any?
> What is the size of your inlet?  Outlet?  I suppose the top section is for
> induction?
>
> I also noticed that you had problems similar to Chris with the EC-2 getting
> scrambled.
>
> Bill B
>
> -----Original Message-----
> From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
> Behalf Of Mike Wills
> Sent: Saturday, August 08, 2009 11:57 AM
> To: Rotary motors in aircraft
> Subject: [FlyRotary] Re: T-shirt design
>
> On the other hand, if it takes this much input to build a T shirt, its
> amazing that anyone here has managed to build and fly anything. I hope we
> can stop talking about T shirts soon.
>
> Sorry to say Bill that I dont know what your cooling system looks like so
> cant answer that question. Cooling was something I worried a lot about
> because when I started my install it seems that everyone had cooling
> problems. To date I've had zero problems with cooling (admittedly with
> limited flight time to date but I hope to change that soon). My system has
> generous inlets and outlets ( I think many people tend to undersize these
> thinking that liquid cooling is more efficient so the holes dont need to be
> as big). My thinking was its easier to start with a hole thats too big and
> shrink it later than to enlarge something thats too small. I also used a
> radiator with quite a lot of surface area compared with its thickness.
> Easier  to get air to go through. Finally, with an RV and the big fan in the
> front, my inlet gets plenty of prop blast right below the prop. Not sure
> what type of airframe you have, but I admire the guys who have successful
> cooling systems on pushers. I think trying to make a P51 style belly scoop
> work is just looking for cooling problems, just my opinion. I havent yet
> heard of a belly scoop on a puller auto conversion that actually worked.
>
> On the EC2, I have some recent experience there. In my opinion the EC2
> installation is a challenging proposition for someone without some
> experience with electronics. I've worked as an electronics tech for 35 years
> and still had some problems. In hindsight it appears that my problems were
> caused by a not fully seated socketted chip rather than an installation
> issue. Having said that, I did make some tweaks to my installation in trying
> to resolve my problems, which I believe improved the system. It is clear
> that the EC2 works if installed correctly, but pay close attention to proper
> installation techniques. The installation instructions and the recent
> comments on the forum in regards to proper installation arent suggestions,
> they are mandatory if you want the EC2 to work.
>
> Mike Wills
> RV-4 N144MW
>
> ----- Original Message -----
> From: "Bill Bradburry" <bbradburry@bellsouth.net>
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Sent: Saturday, August 08, 2009 6:41 AM
> Subject: [FlyRotary] Re: T-shirt design
>
>
>> If there had been this much response for any of the questions we have had
>> about how to get a rotary to fly we would have complete FWF packages (with
>> drawings) for every type of plane we are trying to fly!!!
>>
>> This country doesn't need a health care plan (especially not the one they
>> are ramming down our throats), it needs a T-Shirt!
>>
>> What is wrong with making a T shirt out of Tracy's button??  Oh, Er, that
>> is
>> right, we are not flying...or building...we are designing a shirt!!
>>
>> Anybody got any ideas why my install will not cool?
>>
>> It seems that there is something fundamentally gremlin about the
>> electrical
>> problems Chris B has been having with his EC-2...What is up with that??
>>
>> Bill B
>>
>>
>> --
>> Homepage:  http://www.flyrotary.com/
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>> http://mail.lancaironline.net:81/lists/flyrotary/List.html
>>
>
>
>
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>
>
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