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Idle speed guesstimate (Read 86 times)

daltmyer920 YaBB Newbies Offline awesome site! love the bike Posts: 28 Houston TX Gender:	Idle speed guesstimate 05/22/14 at 21:34:47 Wanted to load a quick video. If anyone could let me know if idle speed seems alright? I personally think may be a tad on the slow side I can email the video to someone but won't let me load the video. So PM if u can help me out. Thanks
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justin_o_guy2

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Re: Idle speed guesstimate
Reply #1 - 05/22/14 at 22:42:22

If you think its a bit slow, jack it up a little,.,Low idle rpm = low oil pressure = accelerated wear on the cam bearings, which arent insert bearings. Theyre line bored holes that are 1/2 in the head & 1/2 in the head cover. Ya dont wanna starve that for oil.. Until you KNOW what the idle RPM is, youre way ahead spending a buck on gas because its a little higher than needed. If you can get on a flat parking lot & get rolling in first gear & let it drop to an idle, it should be making about 10 MPH. Wait till its all warmed up, Someone who knows the Ge3ars/RPM/speeds may correct me on this.

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jcstokes Serious Thumper Offline SuzukiSavage.com is very useful Posts: 2119 Mauku New Zealand Gender:	Re: Idle speed guesstimate Reply #2 - 05/22/14 at 22:47:54 It possibly should go popapopapopa at idle rather than thuump thuump thuump. But I'm not a techie or expert.
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Idle speed guesstimate Reply #3 - 05/22/14 at 22:58:21 JC,, NO Kiddin youre no techie OR expert,, EVERYbody knows its popadapopadapopada not popapopapopa You left out the exhaust stroke man,,this aint no twice cycle.. You tryin to mess the guy up?
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jcstokes Serious Thumper Offline SuzukiSavage.com is very useful Posts: 2119 Mauku New Zealand Gender:	Re: Idle speed guesstimate Reply #4 - 05/23/14 at 01:49:38 Thank you JOG2, now he knows the right noise.
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doctorpc YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 39 Gender:	Re: Idle speed guesstimate Reply #5 - 05/23/14 at 04:17:13 I have a tach on my S40 and i know my idle is about 1250rpm i was told that was about right to keep it above 1000rpm
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curmudgeon

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Re: Idle speed guesstimate
Reply #6 - 05/23/14 at 06:24:13

I don't have a tach, but as far as determining rpm by ear, I approach the problem logically:

It's a 4 stroke engine with 1 cylinder, therefore I should hear 1 exhaust pulse every 2 rpm. If I wanted an 1100 rpm idle, I should hear ~550 exhaust pulses each minute.

The fastest youtube metronome I could find is 500 bpm, so just make your idle sound a little faster than this and you should be good: https://www.youtube.com/watch?v=QImRxzVz3hg

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thumperclone Serious Thumper Alliance Member Offline PGR rider riding with respect Posts: 5822 Grand Junction Colorado Gender:	Re: Idle speed guesstimate Reply #7 - 05/23/14 at 10:38:08 check the tech section there was a sound clip at one time "quick audio tach"
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