Potato..potato...question
Seasoned HDF Member
Joined: Oct 2010
Posts: 12,230
Likes: 7,807
From: Along the shoreline in SW FL
Nope. An unbalanced motor with both rods inline on the crank will beat itself to death unless the idle is set at a certain RPM. If you want to run your idle that low and destroy your bottom end that's fine with me... I hope you do more riding than idling.
Again, has nothing to do with oil pressure or flow. As long as the oil pump on a pan/shovel/evo is primed, it doesn't need that much pressure to operate. It is not really an oil "pump" system but an oil "flow" system.
Again, has nothing to do with oil pressure or flow. As long as the oil pump on a pan/shovel/evo is primed, it doesn't need that much pressure to operate. It is not really an oil "pump" system but an oil "flow" system.
Outstanding HDF Member
Joined: Jul 2013
Posts: 2,874
Likes: 36
From: Houston, TX
I'm not one of those that advocates shooting for 500 or 550rpm. Yeah those videos on youboob are cool to hear...the ultra super low idle ancients. BUT...I'm sure lots here will agree...the sound of a Shovel or Pan is not from SUPER low idle. Yes it will idle lower than the twinkies...but I'm probably at 750-800rpm. The sound is still much different...from many other factors.
This is not 750-800 RPM, I can assure you. Try 5-650.
Outstanding HDF Member
Joined: Jul 2013
Posts: 2,874
Likes: 36
From: Houston, TX
What? Harley Davidson used to run CAST IRON cranks which were heavier, and wouldn't hold true for over 100,000 miles. When the Evo came out, it was the first Harley Davidson with sleeved aluminum jugs and heads, along with a forged steel crank held together by a nut, that WILL hold true and is a lot tougher than a cast iron crank. The new twinkie cranks are still FORGED STEEL but because they are pressed together, and they use standard roller bearings on the crank pins and not double tapered timkens, they come out of true easily.
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Joe Kucinski
Seasoned HDF Member
Joined: Nov 2010
Posts: 17,548
Likes: 7,203
From: Oxford, Nc
What? Harley Davidson used to run CAST IRON cranks which were heavier, and wouldn't hold true for over 100,000 miles. When the Evo came out, it was the first Harley Davidson with sleeved aluminum jugs and heads, along with a forged steel crank held together by a nut, that WILL hold true and is a lot tougher than a cast iron crank. The new twinkie cranks are still FORGED STEEL but because they are pressed together, and they use standard roller bearings on the crank pins and not double tapered timkens, they come out of true easily.
http://www.dailymotion.com/video/x75pxs_harley-davidson-crankshafts-forged_auto
Seasoned HDF Member
Joined: Nov 2009
Posts: 15,705
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From: Farmington ,MS
Might want to read up on how a pre-twincam oil system works before you go tearing up his "man-card"...the bottom end is indeed denied oil at idle, to keep the hydraulic lifters happy...not sure what RPM the bottom end gets full oil pressure, but I have read 1800 from other sources...he didn't make it up.
