rod bearings

rod bearings

This topic has 5 replies, 5 voices, and was last updated 18 May 2016 at 17:05 by John Fielding.

Viewing 6 posts - 1 through 6 (of 6 total)

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16 May 2016 at 16:26 #1522
duncan webster 1
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@duncanwebster1
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16 May 2016 at 16:26 #238938
duncan webster 1
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@duncanwebster1
My Triumph motorcycle big ends just ran on the ally of the con rod, top side anyway, I can't remember what the cap was. I've run out of bronze to make the coupling and con rod bushes for my 5"g loco, but I have loads of ally of uncertain origin. Has anyone ever tried this material? If so did it work? I don't want tor score the crankpins. Otherwise I have some carbon loaded ptfe and some Delrin, same question
16 May 2016 at 16:29 #238940
JasonB
Moderator
@jasonb
2014 (old HE15) has good bearing qualitied and is often used in model IC engines for the conrods but if you don't know the perentage of your stock of aluminium its not worth risking it.

J
16 May 2016 at 18:01 #238954
Tim Stevens
Participant
@timstevens64731
The oil and the working parts of a motorcycle engine get too hot to use plastic. And any way, a good heat transfer is needed, as the rod conducts heat down from the gudgeon pin and it has to go out through the crank etc.

Tim
16 May 2016 at 18:11 #238956
Michael Gilligan
Participant
@michaelgilligan61133
Tim,

I think the mention of the Triumph was 'by way of introduction' to the topic … Duncan's question relates to his loco.

MichaelG.

Edited By Michael Gilligan on 16/05/2016 18:12:02
18 May 2016 at 17:05 #239224
John Fielding
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@johnfielding34086
Hi Tim,

Use good old cast iron, far superior to bronze IMHO!
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