Return-Path: Received: from sccrmhc13.comcast.net ([204.127.202.64] verified) by logan.com (CommuniGate Pro SMTP 4.2.1) with ESMTP id 415959 for flyrotary@lancaironline.net; Fri, 17 Sep 2004 22:42:14 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.202.64; envelope-from=kenpowell@comcast.net Received: from 204.127.205.145 ([204.127.205.145]) by comcast.net (sccrmhc13) with SMTP id <2004091802413301600mlfi1e>; Sat, 18 Sep 2004 02:41:43 +0000 Received: from [68.51.44.162] by 204.127.205.145; Sat, 18 Sep 2004 02:41:32 +0000 From: kenpowell@comcast.net To: "Rotary motors in aircraft" Subject: Rotary Weight Date: Sat, 18 Sep 2004 02:41:32 +0000 Message-Id: <091820040241.18223.414BA05B000F1DA30000472F220076230204040A99019F020A05@comcast.net> X-Mailer: AT&T Message Center Version 1 (Jul 16 2004) X-Authenticated-Sender: a2VucG93ZWxsQGNvbWNhc3QubmV0 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_18223_1095475292_0" --NextPart_Webmail_9m3u9jl4l_18223_1095475292_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit Joe, Please read the following old messages. Note that anO-360 weighs about 40 lbs more than an O-320. I also have a post (that I can't find) from Tracy showing that his new Renesis installation weighs 285 lbs (trusting to memory here). I think you can safely plan an identical weight to an O-320 and lighter than an O-360. Ken Powell > >BIG SNIP< > > There are about a dozen ways to specify engine weight and I don't know which > way Powersport did it but I would assume that this is Firewall Forward > weight. > I have seen 3 examples of FWF weights of Lyc O - 320 installations in > certified airplanes. The weights were arrived at by actually unbolting > everything forward of the firewall (not including cowl or prop) and weighing > it. These were all on Cessnas 172 of various years. I think Lycoming says > the O - 320 weighs 276 pounds. The actual FWF weights measured were 355, > 370 & 385. > > Moral of the story is that I would not necessarily conclude that the > Powersport engine weighs about the same as an O - 360. It might, but their > 326 lb number does not prove it. > > Tracy Crook > tcrook@rotaryaviation.com > www.rotaryaviation.com _____________________________________________________________ From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of john [frmrjohn@netonecom.net] Sent: Friday, March 21, 2003 6:38 PM To: Rotary motors in aircraft Subject: [FlyRotary] l3B weight Here are the numbers on my engine, 13B w/Marcotte R-drive. Redrive 36# 2 rad. 10 engine 170 oil cooler 6 pan 5 wires, hose 10 wtr pmp 7.5 cooler brkt alt. 7 aluminun plate 8 strtr. 7 between eng & weber&intk 8.4 pan total 275.4 Wt on balance scale was 276# ready to mount on the engine mount, without oil, coolant and exhaust manifold. JohnD _____________________________________________________________ here is a preliminary measurement of an old O-320 and my 13b components- redrive is Tracy's reduction gear unit computer is also Tracy's. There is probably a miscellaneous 20 lbs of stuff that I haven't thought about yet on the 13B re Marko Engine Weight Comparison Lycoming O-320 B3B vs. Mazda 13B - all weights are in pounds. Lycoming engine weight Mazda 13b engine weight 126 case, crank, oil-pan / screen 218 engine, redrive, crank-sensor 76 cylinders 5 oilpan 27 pistons, pins, intakes, etc.6 orig lower intake 5.5 flywheel 10 engine computer 3 carb 4 engine mount in engine guess 20 mags/plugs 6 steel tubing 10 6" prop extension engine sub wt267.5 249 3 engine mount 6 engine mount 3 ? radiator and water 5.5 water pump (racing - reg +2.5) 4 oil cooler 5 oil cooler 7.5 starter (lite) 7.5 starter 10 alternator 7 alterntor(s) guess 3 exhaust 13.5 exhaust (plus piping) 295 293 _____________________________________________________________ rom: "Marko Bewersdorff" To: Subject: RE: CG Date sent: Mon, 15 Apr 2002 08:53:19 -0700 Send reply to: flyrotary@olsusa.com >>> ^ >> ^ >>>> FlyRotary <<<< ^ << ^ <<< >>> ! >> ! >>>>>>>>>><<<<<<<<< ! << ! <<< >> I have a 6port and a tracy redrive with the 6 gears inside, the CG is about where the sparkplugs are (rotor near the re-drive) that is without intake manifold, without alternator and I don;t remeber if that included the waterpump. weight wise I have some numbers taken of my engine components Lycoming O-320 B3B engine weight 76 cylinders 126 case, crank, oilscreen 27 pistons, pins, intakes, etc. 5.5 flywheel 3 carb 20 mags/plugs (guess) 10 prop extension engine sub wt. 267.5 3 engine mount (long ez) 4 oil cooler 7.5 starter (lite) 10 alternator 3 exhaust (guess) total 295 mazda 13b engine weight 218 engine, redrive (Tracy), crank-sensor 5 oilpan 6 original lower intake 10 engine computer (Tracy) 4 engine mount in engine (Aluminum Plate) 6 steel tubing for mount sub total 249 5 oil cooler 5.5 water pump (racing - regular add 2.5 lbs) 13.5 exhaust total 273 re Marko -------------- Original message -------------- > Hi All, > > Please tell me how much more a RX-7 that has every thing on it ready to fly, > water oil and etc., weighs more than a 180 HP Lyc. ( approx ). > > Thanks > Joe > > > >> Homepage: http://www.flyrotary.com/ > >> Archive: http://lancaironline.net/lists/flyrotary/List.html --NextPart_Webmail_9m3u9jl4l_18223_1095475292_0 Content-Type: text/html Content-Transfer-Encoding: 8bit

Joe,

Please read the following old messages.  Note that anO-360 weighs about 40 lbs more than an O-320.  I also have a post (that I can't find) from Tracy showing that his new Renesis installation weighs 285 lbs (trusting to memory here).  I think you can safely plan an identical weight to an O-320 and lighter than an O-360.

Ken Powell

> >BIG SNIP<

>

> There are about a dozen ways to specify engine weight and I don't know which

> way Powersport did it but I would assume that this is Firewall Forward

> weight.

> I have seen 3 examples of FWF weights of Lyc O - 320 installations in

> certified airplanes.  The weights were arrived at by actually unbolting

> everything forward of the firewall (not including cowl or prop) and weighing

> it.  These were all on Cessnas 172 of various years.  I think  Lycoming says

> the O - 320 weighs 276 pounds.  The actual FWF weights measured were 355,

> 370 & 385.

>

> Moral of the story is that I would not necessarily conclude that the

> Powersport engine weighs about the same as an O - 360.  It might, but their

> 326 lb number does not prove it.

>

> Tracy Crook

> tcrook@rotaryaviation.com

> www.rotaryaviation.com

_____________________________________________________________

From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf
of john [frmrjohn@netonecom.net]
Sent: Friday, March 21, 2003 6:38 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] l3B weight

Here are the numbers on my engine, 13B w/Marcotte R-drive.
Redrive        36#           2 rad.            10
engine          170            oil cooler        6
pan               5               wires, hose     10
wtr pmp        7.5            cooler brkt
alt.                   7             aluminun plate  8
strtr.                 7            between eng &
weber&intk    8.4           pan             total  275.4

Wt on balance scale was 276# ready to mount on the engine mount, without
oil, coolant and exhaust manifold.      JohnD

_____________________________________________________________

here is a preliminary measurement of an old O-320 and my 13b components- redrive is Tracy's reduction gear unit computer is also Tracy's.
 
There is probably a miscellaneous 20 lbs of stuff that I haven't thought about yet on the 13B
 
re
 
Marko
 
 
Engine Weight Comparison Lycoming O-320 B3B vs. Mazda 13B - all weights are in pounds.
Lycoming engine weight Mazda 13b engine weight
126 case, crank, oil-pan / screen 218 engine, redrive, crank-sensor
76 cylinders 5 oilpan
27 pistons, pins, intakes, etc. 6 orig lower intake
5.5 flywheel 10 engine computer
3 carb 4 engine mount in engine
guess 20 mags/plugs 6 steel tubing
10 6" prop extension
engine sub wt 267.5 249
3 engine mount 6 engine mount
3 ? radiator and water
5.5 water pump (racing - reg +2.5)
4 oil cooler 5 oil cooler
7.5 starter (lite) 7.5 starter
10 alternator 7 alterntor(s)
guess 3 exhaust 13.5 exhaust (plus piping)
295 293


_____________________________________________________________

rom:            "Marko Bewersdorff" <marko@bewersdorff.com>
To:              <flyrotary@olsusa.com>
Subject:         RE: CG
Date sent:       Mon, 15 Apr 2002 08:53:19 -0700
Send reply to:   flyrotary@olsusa.com

>>> ^ >> ^ >>>> FlyRotary <<<< ^ << ^ <<<
>>> ! >> ! >>>>>>>>>><<<<<<<<< ! << ! <<<
>>
I have a 6port and a tracy redrive with the 6 gears inside, the CG is
about where the sparkplugs are (rotor near the re-drive) that is
without intake manifold, without alternator and I don;t remeber if
that included the waterpump.

weight wise I have some numbers taken of my engine components

Lycoming O-320 B3B engine weight

 76 cylinders
 126 case, crank, oilscreen
 27 pistons, pins, intakes, etc.
 5.5 flywheel
 3 carb
 20 mags/plugs (guess)

 10 prop extension
engine sub wt. 267.5
 3 engine mount (long ez)

 4 oil cooler
 7.5 starter (lite)
 10 alternator
 3 exhaust (guess)
total 295

mazda 13b engine weight

218 engine, redrive (Tracy), crank-sensor
5 oilpan
6 original lower intake
10 engine computer (Tracy)
4 engine mount in engine (Aluminum Plate)
6 steel tubing for mount

sub total 249


5 oil cooler
5.5 water pump (racing - regular add 2.5 lbs)

13.5 exhaust
total 273

re

Marko 

 


 

-------------- Original message --------------

> Hi All,
>
> Please tell me how much more a RX-7 that has every thing on it ready to fly,
> water oil and etc., weighs more than a 180 HP Lyc. ( approx ).
>
> Thanks
> Joe
>
>
> >> Homepage: http://www.flyrotary.com/
> >> Archive: http://lancaironline.net/lists/flyrotary/List.html
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