VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.

  #31  
Old 08-19-2019, 08:43 PM
azflyer21 azflyer21 is offline
 
Join Date: Nov 2016
Location: Scottsdale AZ
Posts: 284
Default

Starting on pg. 5 you can see the PMag install from the ASF manual http://www.aircraftspecialty.com/PDF...RV-14%20FF.pdf
__________________
Kevin Lippert
RV-14A N1402 Flying 03-2020
Phase 1 Complete 07-12-2020
YouTube Channel
Build Log
Zenith 750 completed 2016 -
Sold
Reply With Quote
  #32  
Old 08-20-2019, 03:27 PM
bkervaski's Avatar
bkervaski bkervaski is offline
 
Join Date: Mar 2017
Location: Birmingham, Alabama
Posts: 1,869
Default

Just making sure I got this right .. timing set to 20 degrees .. the tooth marked with a sharpy is TC .. between 2nd and 3rd tooth (each tooth is 2 degrees):

__________________
RV-14A #140376
N196 (Flying)
2019 Bronze Lindy

Last edited by bkervaski : 08-20-2019 at 04:06 PM.
Reply With Quote
  #33  
Old 08-20-2019, 04:00 PM
JDA_BTR JDA_BTR is online now
 
Join Date: Dec 2013
Location: Colorado Springs, CO
Posts: 1,379
Default

I think it is easiest to find no 1 at TDC and put a -7 offset in the pmag settings to orient the system for our engine. TDC is found both on the flywheel and with a mark at the starter so it is located with confidence.
__________________
Ser 140142, RV-14A flying - N1463
Ser 83825, RV-8 building - N8638?
USN Ret, Urologist, AME, Repeat Offender
Reply With Quote
  #34  
Old 08-20-2019, 06:13 PM
bkervaski's Avatar
bkervaski bkervaski is offline
 
Join Date: Mar 2017
Location: Birmingham, Alabama
Posts: 1,869
Default

Well, glad I didn't decide to fire it up today ... appears I installed the drive gear cotter pins incorrectly.

The instructions say:

Make certain the cotter pin ends are secure and lay flat. The back wall of the accessory case will be close to the end of the shaft.

I took that to mean just make sure the cotter pin is laying flat on the top of the shaft with no excessive space.

After further review, I *think* what it means is to wrap the cotter pin around the castellated nut so none of it is above the shaft.

In either case, guess I need to pull them and re-do the cotter pins ...

... thinking it thorough, this will require re-timing them as well. Three steps forward, two steps back
__________________
RV-14A #140376
N196 (Flying)
2019 Bronze Lindy

Last edited by bkervaski : 08-20-2019 at 06:21 PM.
Reply With Quote
  #35  
Old 08-20-2019, 07:33 PM
Bavafa Bavafa is offline
 
Join Date: Oct 2007
Location: Sacramento, CA
Posts: 3,639
Default

Quote:
Originally Posted by bkervaski View Post
Well, glad I didn't decide to fire it up today ... appears I installed the drive gear cotter pins incorrectly.

The instructions say:

Make certain the cotter pin ends are secure and lay flat. The back wall of the accessory case will be close to the end of the shaft.

I took that to mean just make sure the cotter pin is laying flat on the top of the shaft with no excessive space.

After further review, I *think* what it means is to wrap the cotter pin around the castellated nut so none of it is above the shaft.

In either case, guess I need to pull them and re-do the cotter pins ...

... thinking it thorough, this will require re-timing them as well. Three steps forward, two steps back
I am not sure if this is correct. Your first take away was correct, in my opinion, as I have seen the cotter pin coming from both Lycoming and PMAG securely bent over the shaft but tightly as it has been mentioned.

Also, if you are setting your timing at TDC, then you will need to reprogram the PMAG to fire at 20 BDC instead of the standard 25 BDC which is for the [i]O360 engines. If you have not reprogramed your PMAGs, you can set your timing at about 5 degree ATDC (about 2.5 tooth of the ring gear)
__________________
Mehrdad
N825SM RV7A - IO360M1B - SOLD
N825MS RV14A - IO390 - SOLD
N258SM RV14A - IO390EXP119 - in progress
Dues paid
Reply With Quote
  #36  
Old 08-21-2019, 06:01 AM
Mark Dickens's Avatar
Mark Dickens Mark Dickens is offline
 
Join Date: Apr 2012
Location: Collierville, TN (KFYE)
Posts: 1,475
Default

In re the cotter pins, your first interpretation is correct. Just make sure the tails of the cotter pins lie flat. I sent mine to Emagair a few years ago for the checkup and firmware upgrade. They replaced the older, thinner cotter pins with current cotter pin, and they bent the tails over as you've described.
__________________
RV-8 #81077 Super Slow Build
Dynon Skyview HDX, Titan IOX-370, Dual P-Mags, AFP FM200A FI, Whirlwind 200RV CS Prop
First Flight 11/20/2016
https://www.marksrv8.com
Reply With Quote
  #37  
Old 08-21-2019, 03:33 PM
bkervaski's Avatar
bkervaski bkervaski is offline
 
Join Date: Mar 2017
Location: Birmingham, Alabama
Posts: 1,869
Default

Okay, good to go on the install! Ready to fire it up.

Everything passed the "prop pull-through" test outlined in the instructions.

Got a bit hot today, test run in the morning!

__________________
RV-14A #140376
N196 (Flying)
2019 Bronze Lindy

Last edited by bkervaski : 08-22-2019 at 05:26 PM.
Reply With Quote
  #38  
Old 08-21-2019, 06:58 PM
Dave12 Dave12 is offline
 
Join Date: Oct 2010
Location: Elkton, Md.
Posts: 1,745
Default

Doc, you?re going to like those pmags.
__________________
Wag Aero Sport Trainer built,sold and wrecked
N588DF RV12 #336 built, sold and alive and well in New York
N73DF RV12 #244 built, sold and alive and well in Florida
N91 RV RV9 I wish I could say I built this one! Mark Santoleri hit the ball out of the park on this gem.
Reply With Quote
  #39  
Old 08-21-2019, 08:41 PM
rapid_ascent rapid_ascent is offline
 
Join Date: Mar 2008
Location: Dublin, CA
Posts: 1,624
Default

I think you should review the Additional LED Signaling section at the end of the Installation Guide. To me it almost sounds like you turned the power on after you ungrounded the p-lead from reading the LED state decriptions. Do you see the LED color burst when you apply power?

I'm certainly not an expert here but just trying to follow along since I just ordered my IOX-370 with Pmags and suspect I'll be going through the same steps at some point in the future.
__________________
Ray Tonks
2022 Donation Paid
Titan IOX-370, Dual PMAGs, 9.6:1 Pistons, FM-150
RV-7 Fuselage in progress
* Cabin Interior - In progress
RV-7 SB Wings
* Both Wings fully skinned
* Fuel Tanks Complete - No leaks finally
* Ailerons Complete
* Flaps Complete
RV-7 Empennage - Complete (a little fiberglass work left)
Vans Training Kit # 2 - Complete
RV-7 Preview Plans
Vans Training Kit #1 - Complete
EAA Sheet Metal Class - Complete
Reply With Quote
  #40  
Old 08-22-2019, 05:36 PM
bkervaski's Avatar
bkervaski bkervaski is offline
 
Join Date: Mar 2017
Location: Birmingham, Alabama
Posts: 1,869
Default

Well, fired up and everything worked as expected!

Things I noted:

* Much much much smoother idle
* Started easy, even the subsequent hot starts
* RPM drop at 1800RPM was more specific (can't think of a better description)
* Tach worked, yay! Not sure why I thought it wouldn't
* Engine seemed like a happy camper
* No surprises

Test flight tomorrow or first day I can get 4500-5000 over the field and fly circuits.
__________________
RV-14A #140376
N196 (Flying)
2019 Bronze Lindy
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 11:03 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.