X-CGP-ClamAV-Result: CLEAN X-VirusScanner: Niversoft's CGPClamav Helper v1.23.0 (ClamAV engine v0.103.0) X-Junk-Score: 15 [X] X-KAS-Score: 15 [X] From: "Andrew Martin andrew@martinag.com.au" Received: from mail-wr1-f41.google.com ([209.85.221.41] verified) by logan.com (CommuniGate Pro SMTP 6.3.5) with ESMTPS id 369466 for flyrotary@lancaironline.net; Sun, 17 Oct 2021 20:07:11 -0400 Received-SPF: softfail receiver=logan.com; client-ip=209.85.221.41; envelope-from=andrew@martinag.com.au Received: by mail-wr1-f41.google.com with SMTP id k7so37855003wrd.13 for ; Sun, 17 Oct 2021 17:07:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=martinag-com-au.20210112.gappssmtp.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=8c52qWqM5kOiTH2mtQG05auC7J3OIRiVbDfOeGFAPIE=; b=oIASbYFlvmBxOEPDrAx9F/eQppngpLHolNOofAIDTqNlZQVPVe2j2qdGn5yKErGWiK qXRQFYas909I6mIe/HNCD6vhVyrvUbLT0+mynGvtJ+CRkrsdtMqyhHGp85Dc5AWlbNsu /1Eo8gL/YPRj5yW8EM6RQDzRcajmY9va4NePrYr4p8+oAk/c9p8lKaulk2IQIK2gjhsZ U44sK7P/dfWM5hsjrssgjiN1Xlm6ydYc4sVh9EW1dGk34jhTtaHCoRJfnQnanYs4aoyd jN6fpgQSbK9b7XWeqlCS2ZHAZ1tOVqohNEfw+mnQpF15MIwsRB88ed7+9aj2qOG05Tgz QScQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=8c52qWqM5kOiTH2mtQG05auC7J3OIRiVbDfOeGFAPIE=; b=zbGi/kl6JYpEtt4Cmh+qdOIdkpGNq7g9L+3Ve5CEXkglI0xBBYEpJO0dPPPCD6gtXL dzCOofN+w7Anjp489bPyNMqDz8LX8H1mSWltrdMHTeQ+RXuSKB5NcU+LwhFn/CKLPjsX WL+7JxxPfonxKm7DHiNi4ZyWiVNmDwDKBMXXaw68ssAOW06jo3OA/7jFI+Y2tPxAzUSW oJesE7QDAXW/ynvEoTHIDVoqZm0yA92GWM/fitDxUlSsv8C8s0sR2zbbC0y4D0RyxgJV 0S6YAuWu5EnEWiIiLkSMf13A/v84V7YZ8hwCoe6PJbz4rVQcag774Usdprrr1RDGsa3J Hh5Q== X-Gm-Message-State: AOAM5315DY8pAJJ9PUdEAkbF8QRU38nmHi649Gk0n8HCuw1qH1O1joV/ jtOuWh2kKrO5AZRf7xlaRDRdsJGBQb1vnlRHp5jwlK9NHvRY X-Google-Smtp-Source: ABdhPJz1z14KuRgXiCgmnt187slSnflt2i6tikUkuclHWk5hKr7p/kPqi9R/ymopYjio+WqTBxDkcDvIzfy/B4Xjktk= X-Received: by 2002:a5d:6d02:: with SMTP id e2mr31279080wrq.427.1634515613843; Sun, 17 Oct 2021 17:06:53 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Date: Mon, 18 Oct 2021 08:06:48 +0800 Message-ID: Subject: Re: [FlyRotary] Re: Planetary re-drive? To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="0000000000008b15f105ce9552e0" --0000000000008b15f105ce9552e0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable He Neil Way to go with the ag drones. Just a pity cant do commercial ops with Exp. Btw. 2 Ag Thrush's and a C180 damaged on our farm when the hangar collapsed during a cyclone in April. Bit annoying. Good to see you still developing. I still got my original 20b that will be looking for an airframe when time allows. Andrew On Sun, 17 Oct. 2021, 5:56 am 12348ung@gmail.com, < flyrotary@lancaironline.net> wrote: > Marc, > I am the only one making redrives at all recently. > Currently teaming up with a partner who has access to all maching gear to > make another version. Why another version? Well it appears that the for= d > planetries and g/box parts in the US are now superseded and difficult to > source so the cost goes up. In my search to find an alternative I am now > to get a planetry from the GM automatics as there are thousands of them i= n > OZ and naturally reasonably priced. The ratio is approx. 3:1 which is > ideal. > Planetry sourced, the rest of the redrive is also undergoing a > rethink as to cut cost. Currently just the prop shaft cost $1000 if I ta= ke > 10 at a time! Singularly the cost is $1500! Looking at getting one cast > instead of CNC. The housing cost me nearly $1200 for a very "pretty" CNC > job, so again casting is much cheaper. A standard planetry is mandatory, > as to change the ratio again the cost is horrendous. Whatever is closest > to 3:1 will have to do. > Input shaft will have to be made as I prefer a sold unit over a "pinned" > unit. Again cost, but necessary. > Cushion drive is mainly cast and CNC to finish -- not difficult to set up > for CNC and 10 of will not break the bank. > The mounting plate will be cast from Magnesium alloy rather than the 1/2 > inch 6061 alloy plate. Again cost, lightness and strength. > > The end result? Cannot tell at this stage but without this progression, > there will be no redrives available. The experimental market is no reaso= n > the go into the cost of producing redrives, but the real demand looming i= s > the Agricultural drone crop spraying market. Here the need is for high > power / weight engines (mazda) and therefore a redrive (affordable). Muc= h > legislation involved, but under the experimental banner that all alters. > This market is huge if a drone that can lift up to 500 KG can be made. > Even 200 KG is marketable which is a single rotor mazda. The "electric" > charge cannot compete I feel with the power to weight of the Mazda. > Looking at a twin rotor helicopter mazda powered. Now that will > get the natives talking! Here in Oz a self propelled crop sprayer is way > over $500,000. Then it cannot spray on boggy ground. Spot spraying is > costly, and timing is critical, so drones will come as lifting capacity > arrives. CASA (aust) and the FAA have many regs regarding spraying > chemical by air, but as demand increases the rules will be forced to > change, I think. Regardless the market is there which will benefit the > experimental aviation sector. Built on farm, used on farm, even if only = to > spray plant deficiencies and fungicide , the market is there. > Hopefully it will all happen, but first a redrive. > Neil. > > -----Original Message----- > From: Rotary motors in aircraft > Sent: Friday, October 15, 2021 8:22 AM > To: Rotary motors in aircraft > Subject: [FlyRotary] Planetary re-drive? > > Who is making a 13b fit 3:1 planetary now-a-days? That is since I can=E2= =80=99t > get a Mistral unit! Need for a 20b. > M > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > --0000000000008b15f105ce9552e0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
He Neil
Way to go with the ag drones. Ju= st a pity cant do commercial ops with Exp.
Btw. 2 Ag= Thrush's and a C180 damaged on our farm when the hangar collapsed duri= ng a cyclone in April. Bit annoying.
Good to see you= still developing. I still got my original 20b that will be looking for an = airframe when time allows.
Andrew

On Sun, 17 Oc= t. 2021, 5:56 am 12348ung@gmail.com, <flyrotary@lancaironli= ne.net> wrote:
Marc,
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0I am the only one ma= king redrives at all recently.=C2=A0 Currently teaming up with a partner wh= o has access to all maching gear to make another version.=C2=A0 Why another= version?=C2=A0 Well it appears that the ford planetries and g/box parts in= the US are now superseded and difficult to source so the cost goes up.=C2= =A0 In my search to find an alternative I am now to get a planetry from the= GM automatics as there are thousands of them in OZ and naturally reasonabl= y priced.=C2=A0 The ratio is approx. 3:1 which is ideal.
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Planetry sourced, the rest of the redrive is al= so undergoing a rethink as to cut cost.=C2=A0 Currently just the prop shaft= cost $1000 if I take 10 at a time! Singularly the cost is $1500! Looking a= t getting one cast instead of CNC.=C2=A0 The housing cost me nearly $1200 f= or a very "pretty" CNC job, so again casting is much cheaper.=C2= =A0 A standard planetry is mandatory, as to change the ratio again the cost= is horrendous.=C2=A0 Whatever is closest to 3:1 will have to do.
Input shaft will have to be made as I prefer a sold unit over a "pinne= d" unit.=C2=A0 Again cost, but necessary.
Cushion drive is mainly cast and CNC to finish -- not difficult to set up f= or CNC and 10 of will not break the bank.
The mounting plate will be cast from Magnesium alloy rather than the 1/2 in= ch 6061 alloy plate.=C2=A0 Again cost, lightness and strength.

The end result? Cannot tell at this stage but without this progression, the= re will be no redrives available.=C2=A0 The experimental market is no reaso= n the go into the cost of producing redrives, but the real demand looming i= s the Agricultural drone crop spraying market.=C2=A0 Here the need is for h= igh power / weight engines (mazda) and therefore a redrive (affordable).=C2= =A0 Much legislation involved, but under the experimental banner that all a= lters.=C2=A0 This market is huge if a drone that can lift up to 500 KG can = be made.=C2=A0 Even 200 KG is marketable which is a single rotor mazda.=C2= =A0 The "electric" charge cannot compete I feel with the power to= weight of the Mazda.=C2=A0
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Looking at a twin rotor helicopter mazda powere= d.=C2=A0 Now that will get the natives talking!=C2=A0 Here in Oz a self pro= pelled crop sprayer is way over $500,000.=C2=A0 Then it cannot spray on bog= gy ground.=C2=A0 Spot spraying is costly, and timing is critical, so drones= will come as lifting capacity arrives.=C2=A0 CASA (aust) and the FAA have = many regs regarding spraying chemical by air, but as demand increases the r= ules will be forced to change, I think.=C2=A0 Regardless the market is ther= e which will benefit the experimental aviation sector.=C2=A0 Built on farm,= used on farm, even if only to spray plant deficiencies and fungicide , the= market is there.
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Hopefully it will all happen, but first a redri= ve.
Neil.

-----Original Message-----
From: Rotary motors in aircraft <flyrotary@lancairon= line.net>
Sent: Friday, October 15, 2021 8:22 AM
To: Rotary motors in aircraft <flyrotary@lancaironli= ne.net>
Subject: [FlyRotary] Planetary re-drive?

Who is making a 13b fit 3:1 planetary now-a-days? That is since I can=E2=80= =99t get a Mistral unit! Need for a 20b.
M

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