-------------- Original message from "George Lendich" <lendich@optusnet.com.au>: --------------

Kelly and All,

Even when the weight of the rotors and the counter weight are confirmed as being compatible - one should also remember the lettering stamping system which matches a paired set, for balancing through similar weight. I have never been able to confirm what the difference in weight is exactly, which is a shame.

George ( down under)

 

 

 

  Joe,

    One other consideration........I have presumed your 89 13B was a NA (6 port) 

and not a Turbo (4 port) engine........Although the NA and Turbo rotors are the

same weight the Turbo rotors are 9.0 to1 comp. ratio.........(the end I hope)

--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold

-------------- Original message from "Kelly Troyer" <keltro@att.net>: --------------

   Joe,

    Yes the 3rd gen counterweight will work.......Just make sure that that your 89 rotors

are actually 9.7 to 1 with the machined depressions.........To my knowledge Tracy's psru

only takes the 2nd gen flexplate flywheel which bolts right on any of the counterweights..

.........Bulent used a 13B Cosmo flexplate (it is like the 3rd gen) but he used the Cosmo

bellhousing and a custom extended input shaft and had to make an adaptor to his flexplate

for Tracy's psru  torque isolator........The Cosmo and 3rd gen automatic flexplate uses a

side mounted starter........As usual I bow to anyone for correction if my info is faulty........ 

--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold

-------------- Original message from "Joe Berki" <jskmberki@alltel.net>: --------------

Thanks,

I have a 89 and a earlier motor 88 or 86.  I want to use the 89 internals and irons if they measure, so what you are saying is that the 89 has the same weight rotors as 3rd gen and can take the 3rd gen flexplate and counterweigth? But what about using Tracy's PSRU?  Is the 2nd gen flexplate the only one that will work?

 

Joe Berki

----- Original Message -----

From: Kelly Troyer

To: Rotary motors in aircraft

Sent: Tuesday, February 05, 2008 8:36 PM

Subject: [FlyRotary] Re: Flex plate(adendum)

Joe,

  Forgot to add this.........It depends on the year model 13B also........The 86 to 88.5

2nd gen had heavier rotors and what I reported is true.........The 88.5 to 91 2nd gen

13B have rotors the same weight as the 3rd gen and should be able to use the 3rd

gen rear counterweight.........You have to be careful with the 88.5 to 89 2nd gen to

make sure you have the lighter rotors (they are 9.7 to1 and have a machined rather

than a cast depressions in the rotor face)..........Sorry for the omission..........

--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold

-------------- Original message from "Kelly Troyer" <keltro@att.net>: --------------

Joe,

   A 3rd gen counterweight and flex plate will fit 2nd gen 13B but the counterweight

will put the 2nd gen out of balance unless rotors and both counterweights  from the

3rd gen are installed also...........On another note if this engine is for an A/C using

Tracy's redrive you must use a 2nd gen flexplate........FWIW

--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold

-------------- Original message from "Joe Berki" <jskmberki@alltel.net>: --------------

Will a flex plate and counterweight from a 3rd gen 13b fit a 2nd gen 13b?  How much for a flex plate and counterweight?  Thanks for any help.

 

Joe berki

Limo EZ

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