On Wed, Jan 26, 2011 at 2:23 PM, Bill Bradburry = <bbradburr= y@bellsouth.net> wrote:

Mark,

I assume you wi= ll install the diode between the solenoid input and the starter case for gr= ound???

=A0

Bill B

=A0

From:= Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle
Sent: Wednesday, January 26= , 2011 2:36 PM
To: Rotar= y motors in aircraft
Subject: [FlyRotary] Re: Most stupid question here ever...rotor position

=A0

Bill,

=A0

That's exactly the contactor that I have, which d= oes have a spike supressor diode installed.=A0 The "solenoid" tha= t I was referring to earlier is the one that is part of the starter motor.= =A0 And no, mine does not have a spike supression diode, but it will very s= oon.=A0

=A0

Mark
<= /div>

On Wed, Jan 26, 2011 at 1:16 PM, Bill Bradburry <<= a href=3D"mailto:bbradburry@bellsouth.net" target=3D"_blank">bbradburry@bel= lsouth.net> wrote:

Mark,

Yes, I got my c= ontactor from B&C here..

=A0

h= ttp://www.bandc.biz/intermittentdutystartercontactor.aspx=

=A0

it has a built = in spike suppressor diode in it.=A0 However, I am also using the solenoid t= hat came on the starter, and I don=92t think that there is a spike suppress= or diode on it.=A0 I will have to look as I can=92t remember.=A0 Is your se= t up much different from this?

=A0

Bill

=A0

From:= Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle
Sent: Wednesday, January 26= , 2011 2:06 PM
To: Rotar= y motors in aircraft
Subject: [FlyRotary] Re: Most stupid question here ever...rotor position

=A0

Bill,

=A0

I take it to mean the solenoid, not the motor.=A0 Her= e is Tracy's post...

=A0

<quote>

Basically, anything that has an inductive load (relay= , solenoid, etc) and is switched on and off should have a diode clamp unles= s the something about the design requires none.

=A0

BTW, aside from the diode clamps, all those relays an= d contactors introduce more possibilities for routing problems in electrica= l systems.=A0 Yes, I know the theoretical reasons for having contactors and= relays in aircraft but I didn't use any at all.=A0

=A0

Electronic engineer's mantra:

Every wire is a resistor.
Every wire is an inducto= r.
Any two wires are a capacitor.
Any two wires are a transformer.None of these components show up on a schematic.
All of these components affect circuit performance.
Nobody gets engineer= jokes at a cocktail party.

=A0

Tracy

<end quote>

=A0

Mark

=A0

On Wed, Jan 26, 2011 at 12:07 PM, Bill Bradburry <= bbradburry@be= llsouth.net> wrote:

Mark,

Are you talking= about the primary of the starter solenoid?=A0 Mine has diodes across the p= rimary.=A0 Isn=92t that supposed to catch the spikes??

=A0

Bill B

=A0

From:= Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle
Sent: Wednesday, January 26= , 2011 11:05 AM
To: Rota= ry motors in aircraft
Subject: [FlyRotary] Re: Most stupid question here ever...rotor position

=A0

Chris,

=A0

Yes, overthinking problems is=A0easy to do.=A0 I typi= cally lean toward underthinking problems.=A0 =A0

=A0

I was going to stop by on Saturday, but I experienced= a corrupted MAP table incident just prior to departure.=A0 It didn't d= awn on me initially what had hapened.=A0 But as soon as I looked at the map= table I=A0knew that=A0it had been corrupted.=A0 I reloaded the factory tab= le and it=A0fixed the immediate problem.=A0 Now I just need to figure out w= hy it happened.=A0=A0Tracy suggested it may be a spike eminating from the s= tarter solenoid.=A0

=A0

Mark=A0

On Wed, Jan 26, 2011 at 9:47 AM, Chris Barber <cbarber@texasat= torney.net> wrote:

Mark,

=A0

Thanks.=A0 That is what I was t= hinking but then I started=A0over thinking it.

=A0

Now I can focus on the other ta= sks at hand.=A0 Again, I=A0believe it to be timing related.=A0 When I turne= d the CAS, retarded I think (clockwise), it seemed to crank a bit better on= B.=A0 So, like I said, I may be a tooth off. At least it is a starting poi= nt.

=A0

Isn't this fun.......:-\

=A0

Chris

From: Rotary motors in aircraft [flyrotary@lancaironline.ne= t] on behalf of Mark Steitle [msteitle@gmail.com]
Sent: Wednesday, January 26= , 2011 9:06 AM
To: Rotar= y motors in aircraft
Subject: [FlyRotary] Re: Most stupid question here ever...rotor position

Chris, <= /p>

=A0
<= /div>

The rear rotor will on= ly fit one way as dictated by the eccentric shaft, stationary gear and roto= r housing.=A0 So,=A0don't disassemble the motor again... unless you jus= t need something to do with your spare time.

=A0
<= /div>

Mark

On Wed, Jan 26, 2011 a= t 8:50 AM, Chris Barber <cbarber@texasattorney.net> wrote:

This may be the most s= tupid question posed on this site.=A0

=A0

Ok, first the update o= n my loss of compression in my rear rotor housing.=A0 I tore open the engin= e and everything looked really good, except, as expected, the springs for t= he apex seals had been flattened.=A0 Upon reflection, I also remember remov= ing the rear spark plug a while back and recall I replaced it due to the pl= ug removed looked damaged.=A0 At the time, since the engine seemed to be ru= nning ok (event though difficult to start), I didn=92t think too much of it= .=A0 However, now I realize that it was a clear indication of detonation.

=A0

Seems like a no braine= r now, but sometimes I=A0gotta be hit across the skull with the obvious.=A0= Flame suite on but in the tradition of John Slade, I do wish to post my fa= ilures to help others learn and to hopefully finally get it.<= /p>
=A0

Anyway, I got everythi= ng buttoned up and got it to start last night.=A0 I reset all the=A0EC2 par= ameters to the factory defaults. It did not run well.=A0 I could not even g= et it to start on the A computer, and it started after a lot of extended cr= anking on the B computer.=A0 It did not run great on B.=A0 My suspicion is = that the timing is off.=A0 The B computer was tuned a long time ago and has= not been updated.=A0 I plan to do a static timing check this evening if I = can get out to the hangar.=A0 I have gotten that process down pretty good n= ow.=A0 I think I may be off a tooth on the crank angle sensor.=A0 I think a= combination of a lean mixture and bad timing may be the predominant factor= s in my detonation problem.=A0 I had a friend point out the obvious in that= the pinging I may have thought I would hear would not be too likely with t= he noise of the prop.=A0 DOH!

=A0

I did do the=A0EC2 che= ck and the injectors are clicking dutifully and I saw strong spark on all p= lugs.

=A0

Ok, here is the stupid= question and a major bonehead moment.=A0 I remember that you must =93 cloc= k =93 the rear rotor to the front rotor when installing them.=A0 However, w= hen I installed the rear rotor the other day I placed it where I though it = needed to go base on when I removed it, however, I can=92t remember now if = I actually got it back in the right position in relation to the front rotor= .=A0 I was thinking it is only=A0gonna fit one way based on the position of= the e-shaft to the chamber walls.=A0 Is this so, or could I have it out of= position?=A0 I am having visions of me getting it to start with the rear r= otor out of position, thus only running on the front rotor while banging th= e hell out of the rear rotor. =A0=A0Would it even start if this were so?

=A0

If I=A0gotta tear it d= own to check, I will and as mentioned, cracking open is not all that big a = deal anymore.=A0 Other than this obvious brain fart, I am understanding the= process much better=85.rote practice does this.

=A0

Thanks guys/gals.

=A0

Chris Barberfly

=A0
<= /div>

=A0

=A0

=A0