Engine Mechanical Topics Discussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.

Lugging ?

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Old Aug 30, 2014 | 07:00 AM
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Default Lugging ?

I understand "Lugging" as being a no no both during break-in and afterwards. Thats no problem and is easily avoided as my bike has a transmission .

Out of curiosity, just what harm does "Lugging" do ? Thanx.
 
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Old Aug 30, 2014 | 10:34 AM
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It's running the engine at a low engine speed, relative to the road speed, which subjects the engine internals to undue loads and stress. Most likely victim IMHO is the crankshaft, especially the big-end bearings, but the pistons will get rattled around in the cylinders and damage of various sorts could afflict all the major components.
 
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Old Aug 30, 2014 | 12:51 PM
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Understood grbrown, and thanx. I've followed the dealer's advice not to "Lug" but didn't really understand why. I stay above 2000 rpm unless I'm below 3rd gear and don't punch it unless I'm above 2500.
 
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Old Aug 30, 2014 | 01:25 PM
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It's partly about getting maximum life out of the engine and trans! Also we only have two cylinders, so our engines are not going to take too kindly to being run as if they have eight!
 
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