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Big End Oil Groove

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Big End Oil Groove
Chris KC Offline
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Joined: Aug 2017 Posts: 3,394 Threads: 106
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Location: Darkest Bedfordshire
#27
19-09-2019, 11:45 AM
I hadn't really registered until recently how big the drillings are which run between the 1/4" 'splash feed' entry hole in the crank web and the 3/16" exit at the crank pin - 3/8" dia on a 2-brg up to 1/2" or thereabouts on a 3-brg. They are perhaps cavernous enough to look upon as a 'reservoir' which is topped up by the jets. I wonder if 'dribble feed' might be an even more accurate term...?

Interesting then to compare the Nippy crank where the (tiny) 'feed' hole was drilled through directly to the big end at (as others have pointed out) a precarious angle.
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Messages In This Thread
Big End Oil Groove - by Steve Bryant - 15-09-2019, 04:18 PM
RE: Big End Oil Groove - by Terrytuned - 15-09-2019, 07:33 PM
RE: Big End Oil Groove - by Bob Culver - 15-09-2019, 08:02 PM
RE: Big End Oil Groove - by Steve Bryant - 17-09-2019, 02:52 PM
RE: Big End Oil Groove - by Chris KC - 17-09-2019, 04:19 PM
RE: Big End Oil Groove - by Bob Culver - 17-09-2019, 09:04 PM
RE: Big End Oil Groove - by Colin Reed - 17-09-2019, 09:11 PM
RE: Big End Oil Groove - by Steve Bryant - 18-09-2019, 02:58 AM
RE: Big End Oil Groove - by Colin Reed - 18-09-2019, 04:23 AM
RE: Big End Oil Groove - by Bob Culver - 18-09-2019, 08:54 AM
RE: Big End Oil Groove - by Zetomagneto - 18-09-2019, 09:12 AM
RE: Big End Oil Groove - by Ruairidh Dunford - 18-09-2019, 10:17 AM
RE: Big End Oil Groove - by Colin Reed - 18-09-2019, 10:21 AM
RE: Big End Oil Groove - by Bob Culver - 18-09-2019, 11:20 AM
RE: Big End Oil Groove - by Chris KC - 18-09-2019, 12:35 PM
RE: Big End Oil Groove - by Zetomagneto - 18-09-2019, 08:02 PM
RE: Big End Oil Groove - by Hedd_Jones - 18-09-2019, 08:20 PM
RE: Big End Oil Groove - by Ian Williams - 18-09-2019, 09:44 PM
RE: Big End Oil Groove - by Mark McKibbin - 19-09-2019, 01:09 AM
RE: Big End Oil Groove - by Tony Press - 19-09-2019, 01:33 AM
RE: Big End Oil Groove - by Chris KC - 19-09-2019, 07:34 AM
RE: Big End Oil Groove - by Zetomagneto - 19-09-2019, 09:02 AM
RE: Big End Oil Groove - by Bob Culver - 19-09-2019, 09:24 AM
RE: Big End Oil Groove - by Ruairidh Dunford - 19-09-2019, 09:31 AM
RE: Big End Oil Groove - by Bob Culver - 19-09-2019, 10:01 AM
RE: Big End Oil Groove - by Dave Mann - 19-09-2019, 11:16 AM
RE: Big End Oil Groove - by Chris KC - 19-09-2019, 11:45 AM
RE: Big End Oil Groove - by Steve Bryant - 19-09-2019, 03:05 PM
RE: Big End Oil Groove - by Ian Williams - 19-09-2019, 08:38 PM
RE: Big End Oil Groove - by Colin Reed - 19-09-2019, 08:56 PM
RE: Big End Oil Groove - by Hedd_Jones - 19-09-2019, 09:24 PM
RE: Big End Oil Groove - by Bob Culver - 19-09-2019, 11:44 PM
RE: Big End Oil Groove - by Steve Bryant - 20-09-2019, 01:21 AM
RE: Big End Oil Groove - by Tony Press - 20-09-2019, 03:07 AM
RE: Big End Oil Groove - by Ian Williams - 20-09-2019, 06:58 AM
RE: Big End Oil Groove - by Bob Culver - 20-09-2019, 08:33 AM
RE: Big End Oil Groove - by Chris KC - 20-09-2019, 09:50 AM
RE: Big End Oil Groove - by Colin Reed - 20-09-2019, 10:17 AM
RE: Big End Oil Groove - by Steve Bryant - 23-09-2019, 02:29 PM
RE: Big End Oil Groove - by Bob Culver - 23-09-2019, 08:14 PM
RE: Big End Oil Groove - by Greig Smith - 23-09-2019, 08:20 PM
RE: Big End Oil Groove - by Dave Mann - 24-09-2019, 09:04 AM

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