Oldfeller--FSO
Serious Thumper ModSquad
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Hobby is now "concentrated neuropany"
Posts: 12671
Fayetteville, NC
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10k is a good cut off # for a GSXR mebbe, not a Savage. Why did they pick that number?
Where was this information from again?
(Not aware of us being able to find a black box cut off reference when we were warring that topic several times several years ago. Looking for the new information source that has been found.)
An opinion stated by several is that flow and cam issues limit the rpm on stock engines to a fall off at a flat spot that gets wallish around 6-7,000 rpm.
Once you get cammed and flowed, you can go higher -- until the valves float anyway. Valves float before 10,000 rpm. Stock piston is non-interference with the valves, so floating simply means you can't rev any higher with only mild overheating of the valves during the episode because you stop the run up when it happens and you shift to the next gear.
Never have seen my max speed in 5th, have seen it in 4rd and close to it in 3th. Felt bad realizing I'd run it up that tight in 3rd, bad form to do that to your bike but it has happened a few times and the bike survives.
This is one of the reasons I don't think you need a drive chain mod for overdrive, the stock belt is "correct gearing" for a cammed, opened up bike because you can turn a lot of extra rpms.
You lack torque and hp to drive redline in 5th gear even when your bike is heavily modified -- it never gets there in the mountains. 4th gets there kinda slowly, you do most of the span in 3rd then shift.
5th gear is an interstate or open road 'overdrive' gear that is no use in town or in the mountains.
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