Mailing List flyrotary@lancaironline.net Message #39321
From: <hoursaway1@comcast.net>
Subject: Re: [FlyRotary] Re: spinner choice rd1b & iv
Date: Tue, 04 Sep 2007 05:26:42 +0000
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Try this one more time (to resize photo);  Removed bushings, had machine shop reem to 1/2", reworked commutater plts.  David  RV-6A.
 
-------------- Original message --------------
From: "Rob" <rob@mum.edu>
Thanks Kelly. I talked to IVO. The adaptor plate is $220 and the correct length 1/2 inch bolts are $144 plus the allen bolts $20. I'll check with Tracy next.
Is it standard practice to use 1/2 inch prop bolts on 180HP engines and above and 3/8 inch bolts on 150HP and below?  Anyone know anything about this?
Robert
 
Robert Bollinger, 20B in a BD4
FM1099 MUM
Fairfield IA 52557
(641)472-7000 ex2068
(641)919-3213 cell
rob@mum.edu
----- Original Message -----
Sent: Friday, August 31, 2007 7:29 PM
Subject: [FlyRotary] Re: spinner choice rd1b & iv

 
Rob,
  I do not know what the price differance would be but I suspect that you
need to buy a "IVO" adapter plate with the correct drive lug and bolt size
to fit your "RWS" redrive prop hub.........I suspect that "IVO" can pick
one off the shelf........To have "RWS" (Tracy) rework your redrive would
probably be more expensive.........Call them both and find out.......FWIW
--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold




-------------- Original message from "Rob" <rob@mum.edu>: --------------

 
Thanks for your input Kelly.
 
My IVO adapter plate does not bolt to the prop hub. It is sandwiched between the IVO outer plate (crush plate), and the prop hub by 1/2 inch bolts. Then the 1/2 inch bolts are screwed into threated holes in the prop hub. My adaptor plate was made for my redrive that I use on my Ford V6 engine. Anyway I would like to use my IVO prop with Tracy's redrive prop flange so some adapting is necessary. What is the best way to do the adaptation? Any suggestions. Does Tracy have an option for 1/2 inch bolts?
 
Robert
 
Robert Bollinger
FM1099 MUM
Fairfield, IA 52557
rob@mum.edu 
Home (641)472-7000ex2068
Cell     (641)919-3213
----- Original Message -----
Sent: Wednesday, August 29, 2007 4:33 PM
Subject: [FlyRotary] Re: spinner choice rd1b & iv

 
Rob,
   If your "IVO" is like mine then it has an aluminum adapter plate that bolts to
the  SAE 2 redrive hub with either 3/8" or 7/16" (allen head internal wrenching)
bolts then the "IVO" blades are sandwiched between that adapter and the outer
"IVO" plate (with the pitch adjustment screw) with 1/2" bolts that are indexed
between the 3/8" or 7/16"allen bolts........ You will probably want to locate
the spinner backing plate between the redrive hub and the adapter plate to
have proper blade clearance........That would call for the backing plate to be
drilled to the standard SAE 2 bolt spacing and for whatever bolt and drive lug
size your redrive has....... I also have "IVO", both ground adjust and the electric
inflight conversion..........IMHO 
--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold




-------------- Original message from "Rob" <rob@mum.edu>: --------------

Tracy,
Speaking of drive lugs I got your PSRU for my 20B with 5/8 drive lugs for 3/8 inch bolts from Bruce Turrentine but all my props (IVO magnum) are for 1/2 inch bolts. Can I send you the prop hub to change to 7/16 drive lugs or what would you suggest.
Robert
 
 
Robert Bollinger
FM1099 MUM
Fairfield, IA 52557
rob@mum.edu 
Home (641)472-7000ex2068
Cell     (641)919-3213
----- Original Message -----
Sent: Tuesday, August 28, 2007 9:03 AM
Subject: [FlyRotary] Re: spinner choice rd1b & iv

True Buly, except I don't know why prop hub thickness would be a factor or do you mean prop thickness at the hub?  
 
 The rest of it is:  5/8" drive lugs, 3/8" prop bolts (unless 7/16" ordered as an option)  SAE 2 hub spec covers everything else.
 
Tracy Crook

 
On 8/28/07, atlasyts@bellsouth.net <atlasyts@bellsouth.net> wrote:
Hi Tracy,
He'll need the the lug diameter and hole circle pattern, bolt size and prop hub thickness. I had to do the same and they came with all these questions, that I assumed is common knowledge?
Looks like the sales person has a form with all the questions he has to fill?
Buly
>
> From: "Tracy Crook" <tracy@rotaryaviation.com>
> Date: 2007/08/28 Tue AM 08:05:33 EST
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Subject: [FlyRotary] Re: spinner choice rd1b & iv
>
> Spinner choice is a function of the airplane and prop hub (for backing plate
> hole pattern).  It has nothing to do with the reduction drive per se.   The
> hub on all RD1x drives is an SAE 2 , sa me as all Lycoming engines.
>
>  Van's Aircraft would be happy to sell you a spinner with all the necessary
> backing plates.
>
> Tracy
>
> On 8/28/07, Scott <squiggles@yahoo.com> wrote:
> >
> > Hello...
> >
> > I need a spinner for my 105mph airplane which has a ground adjustable ivo
> > with tracys rd1b.  i've tried to contact uhs spinners but they have not
> > returned email or phone messages.
> >
> > For other tractor airplanes using tracys reduction drives, what spinner
> > did you choose?  Did you need aback plate as well?
> >
> > Any thoughts are appreciated.
> >
> > Thank you.
> > -Scott
> >
> >
> >
> >
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