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On my installation I'm starting with 1/4" alum tubing at the drive, to 3/8"
hose, to 1/2" steel tubing (close to the turbo).
Bulent
On 9/26/04 4:46 PM, "Perry Mick" <pjmick@mail.viclink.com> wrote:
> What size is everyone using? The inlet to the redrive is 1/8" NPT and the
> exits are two 1/4" NPT.
>
> On Sun, 26 Sep 2004 20:29:18 +0000, Kelly Troyer wrote
>> Perry,
>> I think the AN-4 fitting could be somewhat restrictive to return
>> oil flow to the pan......IMHO
>>
>> --
>> Kelly Troyer
>> Dyke Delta/13B/RD1C/EC2
>>
>> -------------- Original message from Perry Mick : --------------
>> That engine mount hole in the center housing is 12mm x 1.5mm thread.
>>
>> http://www.anplumbing.com/shop/index.php?shop=&dept=Aluminum
>>
>> part #9919BFG is a 12-1.5 metric to AN4 aluminum adaptor.
>> How about just drilling through the iron and installing one of
>> these? No tapping required.
>>
>> Joe Hull wrote:
>>
>> Paul-
>> If you’re looking for a new home for your PSRU oil drain; I found it
>> was really easy to drill through one of the engine mount holes on
>> the plugs side for my oil return. The existing stud hole sizes are
>> just shy of the ¼ NPT we need and the holes are above the oil level.
>> I put my return into the bottom-rear hole (see picture).
>>
>> This of course assumes you aren’t using the engine mount area for
>> something strange…like your engine mount ;-)
>>
>> Joe Hull
>> Cozy MkIV #991 (working on Engine & Electrical & Finishing)
>> http://www.maddyhome.com/canardpages/pages/JoeHull/index.html
>>
>>
>> From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
>> On Behalf Of paul Sent: Sunday, August 29, 2004 7:23 PM To: Rotary
>> motors in aircraft Subject: [FlyRotary] Re: redrive oil return, was
>> Re: New Cooling Setup
>>
>> Hey, Steve....thanks for the pictures. Since I already have the
>> aluminum plate covering the oil metering pump, it would be easy to
>> drill and tap that. After hearing what Rusty had to say, I'm not
>> sure if I might be better off leaving it as is.....Need to ponder
>> this one. Thanks for taking the time to share your pictures, and I
>> hope your cooling temps get under control so you can just go fly and
>> enjoy the fruits of your labor. Paul Conner, 13b powered SQ2000
>>
>> ----- Original Message -----
>> From: Steve Brooks
>> To: Rotary motors in aircraft
>> Sent: Sunday, August 29, 2004 10:17 AM
>> Subject: [FlyRotary] Re: redrive oil return, was Re: New Cooling Setup
>>
>> Here are a couple of photos of mine.
>>
>> Steve Brooks
>>
>> -----Original Message-----
>> From: Rotary motors in aircraft
>> [mailto:flyrotary@lancaironline.net]On Behalf Of Russell Duffy Sent:
>> Sunday, August 29, 2004 10:30 AM To: Rotary motors in aircraft
>> Subject: [FlyRotary] Re: redrive oil return, was Re: New Cooling Setup
>>
>> Hi, Rusty....My 13b has an aluminum plate covering the old injection
>> pump location. Do I just drill and tap for an NPT fitting in the
>> plate covering the old pump?
>>
>> Ooops, I just remembered that I'm actually returning to the turbo
>> oil drain location on the front cover, and not the injector pump
>> location. When I took the turbo off, I just made an aluminum cover
>> plate with a hole tapped for 1/4" NPT.
>>
>> You don't by chance have an old picture lying around that shows
>> your plate and/or fitting going into the engine do you?
>>
>> Amazingly, I don't have a picture that shows it.
>>
>> My return line presently goes to the oil pan, but to drain the oil,
>> I have to first remove the PSRU drain line. It would be better to
>> run it to the oil oil injection location. Thanks for the info.
>> Paul Conner
>>
>> I ran my oil drain to the oil pan plug location on the original
>> engine. This violates the rule of returning oil below the level of
>> oil in the pan, but it worked fine. Having to remove the PSRU drain
>> line to drain the oil was the best part of that system. I left the
>> line free, so I could remove it at the redrive, then lower it toward
>> my catch pan to drain the oil. It was totally mess-free. I miss
>> that now, especially when I have to drain a little oil to make up
>> for the pre-mix scavenging.
>>
>> Rusty
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