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12-26-2012, 03:49 PM | #1 |
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Rod length
Does rod length affect torque output of an engine?
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12-26-2012, 03:54 PM | #2 |
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It's not the size of the rod that matters, it's how you use it.
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12-26-2012, 03:58 PM | #3 |
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My rod length is of no concern to anyone but my wife...
That being stated, what matters is overall stroke for TQ output, which would be related to rod length. Longer stroke=more TQ, in theory. |
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12-26-2012, 04:05 PM | #4 |
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The smaller your rod, the more torque you will require everyone to think you have.
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12-26-2012, 04:06 PM | #5 | |
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Quote:
So would this imply that (all other engine attributes staying the same) a longer rod would give you a shorter stroke, and thus less TQ? Edit: I'm using this diagram for my logic. A longer rod would then result in less room for the piston to travel and compress the gas? http://en.wikipedia.org/wiki/File:Ar...e_Zweitakt.gif |
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12-26-2012, 04:39 PM | #6 |
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Are you trying to shrink or extend your rod?
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12-26-2012, 04:46 PM | #7 | ||
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Quote:
This is all talking Honda engines, but it's still relevant to your question: Quote:
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12-26-2012, 05:08 PM | #8 |
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12-26-2012, 05:16 PM | #9 |
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Go look at an engine assembly; CHANGING ROD LENGTH WILL NOT CHANGE YOUR STROKE. You'll need a new crankshaft to change your stroke length and swept volume. I haven't looked at the dynamics in a long time but you may get a change in compression ratio and the details that Aetyrno went into seem to have some validity.
The only reason to upgrade/change your rods are if you have a new crank and need a new rod to make sure your piston is in the right place as well as stronger rods if your engine is putting out more torque due to other mawds. |
12-26-2012, 05:58 PM | #11 |
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Are we all talking about the same rod?
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12-26-2012, 07:01 PM | #12 |
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Lmfaooooooo
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12-27-2012, 12:37 AM | #13 |
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such a dirty thread. :p
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12-27-2012, 01:24 AM | #14 |
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Wtf lol best thread name ever
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