Return-Path: Received: from [24.227.161.51] (HELO qnsi-xch.qnsi.net) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 568832 for flyrotary@lancaironline.net; Wed, 15 Dec 2004 14:02:17 -0500 Received-SPF: none receiver=logan.com; client-ip=24.227.161.51; envelope-from=bhughes@qnsi.net Content-class: urn:content-classes:message Return-Receipt-To: "Bobby J. Hughes" MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C4E2D8.D8735C4E" Disposition-Notification-To: "Bobby J. Hughes" Subject: RE: [FlyRotary] Re: M/T Prop Won't Fit PSRU X-MimeOLE: Produced By Microsoft Exchange V6.5.6944.0 Date: Wed, 15 Dec 2004 13:04:04 -0600 Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Re: M/T Prop Won't Fit PSRU thread-index: AcTi1pjT1hLvdUQUR26vXdE4G0l7kAAAgJtw From: "Bobby J. Hughes" To: "Rotary motors in aircraft" This is a multi-part message in MIME format. ------_=_NextPart_001_01C4E2D8.D8735C4E Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Mark, =20 What about getting a non-drilled output shaft from Tracy and have it = locally fitted to match the MT flange? =20 Bobby Hughes ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On = Behalf Of Mark R Steitle Sent: Wednesday, December 15, 2004 12:45 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: M/T Prop Won't Fit PSRU Yes, it's a stepped hole. There is a =BE counterbore on the mating side = which is 3/32" deep. The remainder is 5/8". =20 =20 Mark S. ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On = Behalf Of Tracy Crook Sent: Wednesday, December 15, 2004 12:36 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: M/T Prop Won't Fit PSRU =20 Can do, but the one-of-a-kind shaft price from the CNC facility that = does this part is high (> $500). There are better ways to do this. = BTW, is the drive lug called for by MT really 5/8"? That's not what I = remembered from past discussions. If it really is, my last suggestion = would be the easiest answer. Cost is almost zero. =20 Tracy ----- Original Message -----=20 From: Mark R Steitle =20 To: Rotary motors in aircraft =20 Sent: Wednesday, December 15, 2004 1:28 PM Subject: [FlyRotary] Re: M/T Prop Won't Fit PSRU =20 Tracy, I do have access (if $ufficiently bribed) to an experienced machinist, = with a Bridgeport that should be able to handle the job. What's the = chance of getting an output shaft pre-drilled with =BE" bushing holes? =20 =20 Mark S. (lawn ornament comment referred to the M/T prop.)=20 =20 =09 ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On = Behalf Of Tracy Crook Sent: Wednesday, December 15, 2004 12:16 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: M/T Prop Won't Fit PSRU =20 I have no objection to removing the 5/8" drive lugs and drilling out = the prop flange hole for 3/4" bushings. I'm just saying it probably = can't be done with a hand drill in the garage. Any good machine shop = would be able to do this with the required precision. =20 =20 Tracy (cringing at the thought of RD-1C lawn ornaments) ----- Original Message -----=20 From: Mark R Steitle =20 To: Rotary motors in aircraft =20 Sent: Wednesday, December 15, 2004 12:37 PM Subject: [FlyRotary] M/T Prop Won't Fit PSRU=20 =20 I have been working to resolve a problem for more than a month now and = thought I would query the group for a possible solution. =20 =20 If anyone else is running (or planning to run) a 3-blade M/T electric = prop with the RD-2C gearbox, I have discovered a mating problem in using = this prop/gearbox combination for my 20B. The problem is the RD-2C prop = flange comes with 3/8 id x 5/8 od bushings. The M/T prop has a stepped = hole that is =BE" for the first 3/32" and then goes to 5/8". Tracy is = not comfortable with drilling out the 5/8" bushings and M/T adamantly = advises against using anything less than =BD" prop bolts with this prop. = So, I'm at a standstill until I can get this resolved. The only = solution I can see is to press out the existing bushings and open up the = holes to accept =BE" od x =BD" id bushings. But that would require = disassembly of the gearbox and some precision machine work, possible but = not my first choice. =20 =20 Mark S. Lancair ES - 20B (with a very pricey lawn ornament) =20 ------_=_NextPart_001_01C4E2D8.D8735C4E Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Mark,
 
What about getting a non-drilled output shaft = from Tracy=20 and have it locally fitted to match the MT flange?
 
Bobby Hughes

From: Rotary motors in aircraft=20 [mailto:flyrotary@lancaironline.net] On Behalf Of Mark R=20 Steitle
Sent: Wednesday, December 15, 2004 12:45 = PM
To:=20 Rotary motors in aircraft
Subject: [FlyRotary] Re: M/T Prop = Won't Fit=20 PSRU

Yes, it=92s a = stepped=20 hole. There is a =BE counterbore on the mating side which is 3/32=94 = deep.  The=20 remainder is 5/8=94. 

 =20

Mark=20 S.

From:=20 Rotary motors in aircraft=20 [mailto:flyrotary@lancaironline.net] On=20 Behalf Of Tracy Crook
Sent: Wednesday, December 15, = 2004 12:36=20 PM
To: = Rotary motors in aircraft
Subject: [FlyRotary] Re: M/T Prop = Won't Fit=20 PSRU

 

Can do, = but the=20 one-of-a-kind shaft price from the CNC facility that does this part = is high=20 (> $500).  There are better ways to do this.  BTW, is the = drive lug=20 called for by MT really 5/8"?  That=92s not what I remembered from = past=20 discussions.    If it really is, my last suggestion would = be the=20 easiest answer.  Cost is almost = zero.

 

Tracy

----- = Original=20 Message -----

From: Mark R Steitle=20

To: Rotary motors in = aircraft=20

Sent: = Wednesday, December=20 15, 2004 1:28 PM

Subject: = [FlyRotary] Re: M/T=20 Prop Won't Fit PSRU

 

Tracy,

I do have = access (if=20 $ufficiently bribed) to an experienced machinist, with a Bridgeport = that should be=20 able to handle the job.  What=92s the chance of getting an output = shaft=20 pre-drilled with =BE=94 bushing holes?  =

 

Mark=20 S.

(lawn = ornament=20 comment referred to the M/T prop.)

 

From: = Rotary motors in aircraft=20 [mailto:flyrotary@lancaironline.net] On=20 Behalf Of Tracy Crook
Sent: Wednesday, December 15, = 2004 12:16=20 PM
To: = Rotary motors in aircraft
Subject: [FlyRotary] Re: M/T = Prop Won't=20 Fit PSRU

 

I have = no=20 objection to removing the 5/8" drive lugs and drilling out the prop = flange=20 hole for 3/4" bushings.  I'm just saying it probably can't be = done with a=20 hand drill in the garage.  Any good machine shop would be = able to do=20 this with the required precision.  =

 

Tracy  = (cringing=20 at the thought of RD-1C lawn = ornaments)

----- = Original=20 Message -----

From: Mark R Steitle=20

To: Rotary motors in = aircraft=20

Sent: = Wednesday,=20 December 15, 2004 12:37 PM

Subject: = [FlyRotary] M/T=20 Prop Won't Fit PSRU

 

I have = been=20 working to resolve a problem for more than a month now and thought I = would=20 query the group for a possible solution. =20

 

If = anyone else is=20 running (or planning to run) a 3-blade M/T electric prop with the = RD-2C=20 gearbox, I have discovered a mating problem in using this = prop/gearbox=20 combination for my 20B.  The problem is the RD-2C prop flange = comes=20 with 3/8 id x 5/8 od bushings.  The M/T prop has a stepped hole = that is=20 =BE=94 for the first 3/32=94 and then goes to 5/8=94. =  Tracy is = not=20 comfortable with drilling out the 5/8=94 bushings and M/T adamantly = advises=20 against using anything less than =BD=94 prop bolts with this = prop.  So, I=92m=20 at a standstill until I can get this resolved.  The only = solution I can=20 see is to press out the existing bushings and open up the holes to = accept =BE=94=20 od x =BD=94 id bushings.  But that would require disassembly of = the gearbox=20 and some precision machine work, possible but not my first = choice. =20

 

Mark=20 S.

Lancair = ES =96=20 20B

(with a = very=20 pricey lawn ornament) =20    

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