Thanks TK. Having a part number certainly helps when searching for the introduction of parts.

That R clip part MYH1019 does appear in the both the Mini and the Moke parts microfiche (see below), but not in any hardcopy parts books. To me that says that the R clip replaced the split cotter pin some time in the early to mid 1970's.

Just spoke to John Smidt who believes it was around 1972/73.

The following pages also show change pints for the pedals which was being discussed as a separate topic.

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ex-NSW Police 1970 MK II Cooper S
VMCI #43

My '69 mini K definitely had cotter pins originally, from new.
Never saw an R clip until many years later. Was obviously tempted to use them but the smallest R clip I could find still fouled on the bodywork around where it operates and I was concerned that it could be dislodged and let the clevis pin work off.

I use them, but trimmed short so they can't be pushed off.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

well done Doug

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The bitterness of poor quality (or Crappy Workmanship) remains LONG AFTER the Sweet Taste of Low Price is forgotten.

Why didn't I think of that...…?

The R clips that you buy today are not worth 2 dollops of goat sh!t , they do not have enough tension on them to keep them in place and are too long , as the clevis pin rotates with pedal activation the clips can touch the bulkhead and push the clip out . I had been using them in my mini for a fair while but twice now I have found the clip from the brake pedal laying in the box section , hence I don't use them any more .