VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

  #21  
Old 11-06-2018, 08:27 AM
Walt's Avatar
Walt Walt is offline
 
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 4,854
Default

Quote:
Originally Posted by rvbuilder2002 View Post
As has been mentioned already..... the cautions about torsional vibration are far more than lawyer speak.
It is very real. If tests haven't been done on a specific configuration, then everyone doesn't know what they don't know.

This also can not just be dealt with intuitively.
It has been suggested that keeping RPM's within the normal range will keep you safe. Not necessarily true.

It has been many years since i was involved with some of the testing, but if I am remembering correctly, the most serious RPM's were on the low end of what might be used for cruise flight (2000 - 2300) with moderate MP and advanced timing (read the original Hartzel doc. for more details).
Point being.... without testing there is no way to know what problem areas might exist.
I've had about every type of ignition out there on my old 360 with std compression, but for what its worth, my new IO-370 high compression is being delivered with 2 Bendix mags, and I'm currently not planning on changing to EI.
__________________
Walt Aronow, Dallas, TX (52F) RV7A, IO360, C/S, 1500+hrs

EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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 04:03 PM.


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.