VansAirForceForums  
Home > VansAirForceForums

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

- Today's Posts | Insert Pics

  #251  
Old 01-23-2020, 10:23 PM
lr172 lr172 is online now
 
Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 4,441
Default

Quote:
Originally Posted by rwtalbot View Post
I am making an assumption here that the Slick bearings generally run to TBO without failure.
.
Not a good assumption. Slicks requires a 500 hour inspection; That is their TBO, though the requirement is IRAN and not overhaul. Even the manufacturer doesn't trust them past 500 hours. I don't think that bearings are a common failure at 500 hours, but that is their recommendation. Slick mags are very far from the most robust component on a lycoming engine. It is not the standard that I would follow when designing a part.

Larry
__________________
N64LR
RV-6A / IO-320, Flying as of 8/2015
RV-10 in Phase I

Last edited by lr172 : 01-23-2020 at 10:26 PM.
Reply With Quote
  #252  
Old 01-23-2020, 10:55 PM
rwtalbot rwtalbot is offline
 
Join Date: Feb 2006
Location: Sydney, Australia
Posts: 243
Default

Quote:
Originally Posted by lr172 View Post
Does slick use and interference fit on the shaft AND the bearing housing bore? My point was not the amount of interference, but that the bearing ID should be interference and the OD slip.

My intent was not to question your effort here, only to point out what I learned from engineers that do bearing application engineering for a living.
Larry
Hey Larry, No offense taken or implied. There are lots of people on here with a low more knowledge and practical experience then I have. That's why I asked.

In the Slick both inner and outer races are an interference fit, which seems to odd, given the need for internal clearances. That is why I asked what you and Dan had done

I agree mags are not the most reliable items on an aircraft, my point was that they have quite a few hours in the field.
__________________
Richard Talbot
RV-7A
Sydney, Australia
Reply With Quote
  #253  
Old 01-23-2020, 11:23 PM
lr172 lr172 is online now
 
Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 4,441
Default

Quote:
Originally Posted by rwtalbot View Post
Hey Larry, No offense taken or implied. There are lots of people on here with a low more knowledge and practical experience then I have. That's why I asked.

In the Slick both inner and outer races are an interference fit, which seems to odd, given the need for internal clearances. That is why I asked what you and Dan had done

I agree mags are not the most reliable items on an aircraft, my point was that they have quite a few hours in the field.
I suspect Slick had a reason for doing it. However, it goes against industry convention and I would exercise caution following their lead, unless you know why they did it.

FYI, mine has been in service for over 500 hours without a hiccup. The design is similar to the version dan posted. It will be interesting to see what Dan did on his bearings. I am sure his has as many or more hours on it.

Best of luck on the project. FYI, I built two of them and only used one. Happy to sell the extra if you get frustrated.

Larry
__________________
N64LR
RV-6A / IO-320, Flying as of 8/2015
RV-10 in Phase I

Last edited by lr172 : 01-23-2020 at 11:30 PM.
Reply With Quote
  #254  
Old Yesterday, 10:52 AM
WingsOnWheels WingsOnWheels is offline
 
Join Date: Mar 2009
Location: Plano, TX
Posts: 1,817
Default

I found a source for the EDIS pins. Just ordered 15 for $8 shipped. Let me know if you are in need.

If you buy a used module, get one with the connector, they are easy to un pin and reuse the connector body.
__________________
Colin P.
RV-6A #20603
Complete 5/10/19
PP SEL / A&P
I donate every year on my B-Day (in Dec), but donated early in Sep'19.

Last edited by WingsOnWheels : Yesterday at 10:56 AM.
Reply With Quote
  #255  
Old Today, 12:51 AM
rwtalbot rwtalbot is offline
 
Join Date: Feb 2006
Location: Sydney, Australia
Posts: 243
Default

Quote:
Originally Posted by WingsOnWheels View Post
I found a source for the EDIS pins. Just ordered 15 for $8 shipped. Let me know if you are in need.

If you buy a used module, get one with the connector, they are easy to un pin and reuse the connector body.
Hey Colin, that would be handy. We need enough to do at least 6-8 units over here.
__________________
Richard Talbot
RV-7A
Sydney, Australia

Last edited by rwtalbot : Today at 12:51 AM. Reason: Oops
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 09:31 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.