X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.3 cv=RZTu9Glv c=1 sm=1 tr=0 a=yddmuxop3eaF2vhkAzXwyw==:117 a=x7bEGLp0ZPQA:10 a=ad1WmcueCrwA:10 a=nTHF0DUjJn0A:10 a=pGLkceISAAAA:8 a=Ia-xEzejAAAA:8 a=5kgCHx-JAAAA:8 a=HZJGGiqLAAAA:8 a=C_IRinGWAAAA:8 a=82OKUUNLxEjuuMNJ8HIA:9 a=QEXdDO2ut3YA:10 a=wIusUbz0voXE-TgJrC0A:9 a=NKTWuZCJZXV1Tehx:21 a=Urk15JJjZg1Xo0ryW_k8:22 a=r8ZRCeaX8sBb4OpKaTiC:22 From: "William Jepson wrjjrs@gmail.com" Received: from mail-lj1-f181.google.com ([209.85.208.181] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 398071 for flyrotary@lancaironline.net; Sun, 21 Jun 2020 01:31:39 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.208.181; envelope-from=wrjjrs@gmail.com Received: by mail-lj1-f181.google.com with SMTP id i27so15737975ljb.12 for ; Sat, 20 Jun 2020 22:31:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=KAhIdexE2IICR0uqeGZnHqByLQBP9ecjVQ23foqhkGs=; b=aW0PY1m7Q7XUJQ8oqkKPcvlmnctoyNC/A2WnyVvOKE+cPDf4qxY1gdnBUJAlO2rH0+ XfHhn3c8PiImNMJ+grUWnDqMtHyRdU61hIuFv77rYbTNJBSBb+OwODbzOngdAPB9AwcP XNKIxPlpdSgltXx0Ncm8kwFHKSMPA4QevgZlF/6XhG441icISYwpK5Lre3ZLsEd4lHp0 AeQjfO4zj+1t11hNElIlouBmfZ0qoprY/MzB+EZAwVVba4rzkmTV3FkTzhWScZtsuX1m 7PS6ye9fk2RsBCgmLYxXYjceZ7eGhPcsaJrAMcD7QVsmD0zuYRFy1H2/fMJJBUcaiCDe 4uYw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=KAhIdexE2IICR0uqeGZnHqByLQBP9ecjVQ23foqhkGs=; b=QH2YyuF+lE5+pHKnvV1S75qVOYqCi6W4UfIFWdo+fXI74D/D7WAv3zTxF4OjIHHqbE qWVngMkXvUBb4pqVTzDB48fARuAdW5oWGZIth2pqjZikGMyXiA5R6gSMWqhpZ2E4ECWM Oh3UDR6GzyhwEk1zflsgfeX6dnT7uJDvysagowlric8S6fK1Uw0bXe3vqC8x3Lw5Y0DM 4ZXFBQ53rBcUnoL/oHzAUK+CUlUAl4EMiGLbhlb+nNIuVpUNc3AVBrnWfagsPyZO3MLm M29RxyLGS1rc5Tcuqf11uX4fxFpJ/MmN2D0yRBKNIucKfl0DhU9UTCAAY9T7AkmdqZcU 5Vxw== X-Gm-Message-State: AOAM530yWMcOLQuW0hMPoQUofzm/XajAOft5BBtlrqM9p+8hmD6c8Kqx 3JrO6atgqZ4rWCcoXffaPlYOEbw+j62PN7pSG0Iw7Q== X-Google-Smtp-Source: ABdhPJwXleq+JyWMPqUPt/g/8N4J5qwcjMRXc3gdPD2n+uXAZ1wfYZ/GDBt066WeSoiYpDKyrAx32gRN2WIXRfvzA9E= X-Received: by 2002:a2e:9790:: with SMTP id y16mr5291448lji.150.1592717481542; Sat, 20 Jun 2020 22:31:21 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Date: Sat, 20 Jun 2020 22:31:09 -0700 Message-ID: Subject: Re: [FlyRotary] Re: Radiator Clamp Question To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="000000000000b705a105a8916f96" --000000000000b705a105a8916f96 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Dave is certainly correct, if your install allows doing everything in AN fittings you can=E2=80=99t go wrong. It is expensive and the large size fit= tings can be hard to find, but can=E2=80=99t be beat for security. The worm drive= clamps can bite into your hoses so be cautious. About 1/100th of the cost of AN fittings though. If you use AN hose with stainless steel braid use caution that the braid doesn=E2=80=99t rub on anything. It can cut through things i= t rubs against almost as well as a file. You can use shrink tubing over it to prevent wearing through stuff. You can also buy it now with a safety covering. Bill J On Sat, Jun 20, 2020 at 4:01 PM David Leonard wdleonard@gmail.com < flyrotary@lancaironline.net> wrote: > I agree about the oliker clamps. They make a nice fit but are often > awkward to get the tool in place. > > I use AN fittings with SS braid hose for all the main oil and coolant > hoses. Expensive but not compared to the overall cost of the project. I > use worm clamps for the smaller hoses like overflow bottles etc. I have > never had an issue with them loosening. > > Dave Leonard > > On Sat, Jun 20, 2020 at 2:16 PM Todd Bartrim bartrim@gmail.com < > flyrotary@lancaironline.net> wrote: > >> I have in the past, used crimp style clamps and punch-lok clamps as I'm >> not crazy over worm gear clamps, but I'm now fully back to using worm ge= ar >> clamps. I don't recommend punch-lok clamps as it requires a hammer strik= e >> to set them and that just feels wrong. But the biggest argument in favou= r >> of worm gear clamps is the ease of field repairs. Crimp clamps don't len= d >> themselves well to this. And in tight quarters, while it may be possible= to >> reach in with a tool to squeeze the clamp, it can sometimes be quite >> difficult to have room to either twist off or cut the clamp off for remo= val. >> Due to my nature of always changing and experimenting, this is a >> definite advantage of worm gear clamps. Even if the install is intended = to >> be permanent in design, hoses can and do age, so at some point removing = the >> clamp is inevitable. >> >> Todd Bartrim >> >> >> On Sat, Jun 20, 2020 at 1:08 PM Thomas Mann tmann@n200lz.com < >> flyrotary@lancaironline.net> wrote: >> >>> Anybody try Oetiker crimp style clamps? >>> Nothing to unscrew there. >>> >>> >>> >>> ------------------------------ >>> *From*: "Ernest Christley echristley@att.net" < >>> flyrotary@lancaironline.net> >>> *Sent*: Saturday, June 20, 2020 12:23 PM >>> *To*: "Rotary motors in aircraft" >>> *Subject*: [FlyRotary] Re: Radiator Clamp Question >>> >>> >>> Also, in the past, I have turned the screw so the slot is parallel to >>> the hose, then wrapped safety wire through the slot, around the screw >>> housing and under the threaded end of the screw. >>> >>> On Saturday, June 20, 2020, 12:33:30 PM EDT, David COOK >>> hoursaway1@comcast.net wrote: >>> >>> >>> If it's a worm clamp bend free end over screw, will not loosen. >>> >>> On 06/20/2020 12:23 PM Thomas Mann tmann@n200lz.com < >>> flyrotary@lancaironline.net> wrote: >>> >>> >>> Good Morning, >>> >>> Question for the group ... >>> Has anyone experienced a clamp in the cooling system loosening over tim= e >>> due to vibration? >>> Do you safety wire them? >>> Use a particular type of clamp (such as Oetiker) to avoid this situatio= n? >>> >>> What's the recommendation? >>> >>> T Mann >>> >>> >>> --000000000000b705a105a8916f96 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Dave is certainly correct, if your install allows do= ing everything in AN fittings you can=E2=80=99t go wrong. It is expensive a= nd the large size fittings can be hard to find, but can=E2=80=99t be beat f= or security. The worm drive clamps can bite into your hoses so be cautious.= About 1/100th of the cost of AN fittings though. If you use AN hose with s= tainless steel braid use caution that the braid doesn=E2=80=99t rub on anyt= hing. It can cut through things it rubs against almost as well as a file. Y= ou can use shrink tubing over it to prevent wearing through stuff. You can = also buy it now with a safety covering.
Bill J
=

On Sat, Jun 20, 2020 at 4:01 PM David Leonard wdleonard@gmail.com <flyrotary@lancaironline.net> wrote:
I agree about the oliker clamps.=C2=A0 They make = a nice fit but are often awkward to get the tool in place.

I use AN fittings with SS braid hose for all the main oil and coolant ho= ses.=C2=A0 Expensive but not compared to the overall cost of the project.= =C2=A0 I use worm clamps for the smaller hoses like overflow bottles etc.= =C2=A0 I have never had an issue with them loosening.=C2=A0=C2=A0

Dave Leonard

On Sat, Jun 20, 2020 at 2:16 PM Todd Bart= rim bartrim@gmail.co= m <= flyrotary@lancaironline.net> wrote:
I have in the past, used crimp style clamps and punch-lok clamps= as I'm not crazy over worm gear clamps, but I'm now fully back to = using worm gear clamps. I don't recommend punch-lok clamps as it requir= es a hammer strike to set them and that just feels wrong. But the biggest a= rgument in favour of worm gear clamps is the ease of field repairs. Crimp c= lamps don't=C2=A0lend themselves well to this. And in tight quarters, w= hile it may be possible to reach in with a tool to squeeze the clamp, it ca= n sometimes be quite difficult to have room to either twist off or cut the = clamp off for removal.
=C2=A0 =C2=A0Due to my nature of always changing= and experimenting, this is a definite=C2=A0advantage of worm gear clamps. = Even if the install is intended to be permanent in design, hoses can and do= age, so at some point removing the clamp is inevitable.=C2=A0
Todd Bartrim


On Sat, Jun 20, 2020 at 1:08 PM Thomas Mann tmann@n200lz.com <flyrotary@lancair= online.net> wrote:
Anybody try=C2=A0Oetiker crimp style clamps?
Nothing to unscrew th= ere.
=C2=A0
=C2=A0
=C2=A0
From: "Ernest Christley echristley@att.net" <f= lyrotary@lancaironline.net>
Sent: Saturday, June 2= 0, 2020 12:23 PM
To: "Rotary motor= s in aircraft" <flyrotary@lanca= ironline.net>
Subject: [FlyRotary] R= e: Radiator Clamp Question
=C2=A0
=C2=A0
Also, in the past, I have turned the screw so the slot is= parallel to the hose, then wrapped safety wire through the slot, around th= e screw housing and under the threaded end of the screw.
=C2=A0
On Saturday, June 20, 2020, 12:33:30 PM EDT, David COOK hoursaway1@comcast.net = <flyr= otary@lancaironline.net> wrote:
=C2=A0
=C2=A0
If it's a worm clamp bend free end over screw, will not loosen.
On 06/20/2020 12:23 PM Thomas Mann tmann@n200lz.com <flyrotary@lancaironline.net> wr= ote:
=C2=A0
=C2=A0
Good Morning,
=C2=A0
Question for the group ...
Has anyone experienced a clamp in the cooling system loosening over t= ime due to vibration?
Do you safety wire them?
Use a particular type of=C2=A0clamp (such as Oetiker) to avoid this s= ituation?
=C2=A0
What's the recommendation?
=C2=A0
T Mann
=C2=A0
--000000000000b705a105a8916f96--