Jump to content

Recommended Posts

A car enthusiast in the family passed along several magazines published by the Hagerty Classic Car Insurance Company. (They insure classic motorcycles as well.)  I've been really enjoying the articles and features (Jay Leno writes for them and I've always enjoyed his motor-headed perspective).

In the Nov/Dec 2018 issue, I ran across a piece by journalist, Aaron Robinson, referencing the "Waddington Effect" which discovered WWII British bombers suffered increased reliability problems after their scheduled inspection/maintenance. While I have observed this in motorcycling and other road vehicles, I felt reassured that others have also found this to be real. More support for my reluctance to take anything else apart on the Sport before the South'n Spine Raid in six weeks. :nerd:

( I want to earn my  " :luigi: "  back!  )

Those of you in aviation, marine, and other fleet maintenance may have heard of Waddington, but this is my first exposure and his findings ring true with my experience, especially that of my recent wheel bearing failure.

A couple summary quotes to kick off the discussion:

“The rate of failure or repair is highest just after an inspection and thereafter falls,

becoming constant after about 40-50 flying hours.”    - CH Waddington


“But the fact is that the inspection tends to increase breakdowns,

and this can only be because it is doing positive harm by disturbing a reasonably satisfactory state of affairs.” - CH Waddington


“It was as if the old parts were jealous of the new parts and chose to ruin it for everyone.” - Peter Darragh, Mariner-USA




  • Like 1

Share this post

Link to post

Never. The Murphys already had emigrated to Italy those days

  • Haha 1

Share this post

Link to post

It's usually the case that once an aircraft has been overhauled in the depot, that is takes a shakedown to be returned to user and then gets fitted for return to service. 

Share this post

Link to post

The Waddington Effect sounds a bit like the story about Mrs Schilling's orifice.

She developed a way to allow the early Solex carburettor equipped Rolls Royce Merlin engines to run inverted for longer. I suspect that my bike won't run inverted either. Do I need Beatrice's help?


Share this post

Link to post

Our kinda lady, it seems!  . . . .

‘Her idea of relaxation was to drive a fast car at full throttle,

and if the car was not fast enough, her workbench was there in the back room to machine new parts to make them faster.’


Share this post

Link to post

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...