flyrotary@lancaironline.net Mailing List Archive

Dave,

Tracy said in previous post about the spacer that front of the drive spline hub can be machined

off to provide clearance with front mount plate........... I realize several measurements would have to

be made to verify hub positioning , input shaft spline engagement , etc + starter engagement to

utilize a counterweight/flywheel spacer..............Also I know you are under a time consraint in order

to get up and flying before Reno........Hang in there........One more thing the 86-91 auto trans starter

is the same as the Turbo starter............Only difference I can see is the front bendix hsg has a little

more material machined of presumably to clear the curved trans converter..............The mounting

bolt spacing is also different and new holes would need to be drilled in the RD1X front plate..........

Have all the parts available and do a bolt up to verify all dimensions...........Measure at least twice

before cutting metal !!........................<:)

Kelly Troyer
"DYKE DELTA JD2" (Eventually)

"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold

"TURBONETICS"_TO4E50 Turbo

From: David Leonard <wdleonard@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Thursday, July 21, 2011 3:52 PM
Subject: [FlyRotary] Re: Ok Here are the important flywheel measurements

Thanks Kelly,

I am not sure that I am interested in using a spacer, because my measurements say the flywheel will put the damper plate a little too far aft (in the car) as it is. No good to fix one problem and create another. There is not really any room to move the damper plate closer to the gear box.

My flex plate has not arrived yet, so no trial fits so far.

Thanks for taking all those measurements. Looks like if I switched to the turbo starter I could account for almost half of the material that I would have to machine off. OTOH, you never know if switching the solenoid to the other side is going to cause some sort of interference problem with something else under my cowl... So I will probably just take off the material and call it a day.

--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net

On Thu, Jul 21, 2011 at 11:34 AM, Kelly Troyer <keltro@att.net> wrote:

Dave,

   Spent about 3 hours Wednesday in my 110F hangar measureing starters , Tracy's RD1X mounting

plates , and both manual & auto transmission bell hsg starter mount area................Tracy's RD1X mtg

plates from 13B rear hsg to starter mt surface is 3.550 (same as 86-91 manual bell hsg)..............The

86-91 auto trans measures 3.700 (essentially the same)....................Measured my 86 manual starter

(what Tracy calls out for the RD1X redrive) , My 88 auto trans starter (I am using auto bell hsg with a

extended RD1C input shaft......Like Bulent did)(Do not ask Tracy to make one.....Bulent and I cured

him of one off's) and a 93-95 turbo starter.............Results below



                                          86-91 manual starter                                   86-91 auto starter                                 93-95 turbo starter

mount diameter                           2.635                                                            2.635                                                    2.635

mt flange to bendix gear              1.720                                                            1.875                                                    1.875

     (unactivated)

mt flange to bendix gear              2.220                                                             2.375                                                    2.375

    (solenoid activated)



       Have you done a test mount of the 'ACT" flywheel yet to measure exactly how much the starter needs to be

repositioned??..................Also have you given any thought to using a spacer suggested by Tracy between the

flywheel and counterweight.............I did not find my 0.500 spacer that I offered while searching yesterday but I

will find it (thats what happens when your day job (caretaker) keeps you 55 miles and 5 years from your project)

and you forget where you put things for safekeeping !!.......................<:)

Kelly Troyer
"DYKE DELTA JD2" (Eventually)

"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold

"TURBONETICS"_TO4E50 Turbo

From: Kelly Troyer <keltro@att.net>

To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Tuesday, July 19, 2011 6:42 PM