Idle speed

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CBR >> Racing and Recreational >> Track Days & Riding Schools >> Idle speed

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Idle speed - 2/15/2007 2:26:50 PM

Jaybird180

Posts: 2530
Joined: 5/12/2006
Status: offline

I recall reading somewhere that increasing idle speed is helpful for the track rider. What RPM is good to start with?

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TrackDay Ready 02''F4i
ZG Double Bubble, Galfer SS Lines, PCIIIr, Muzzy s/o, NRC cover, Shift Minder(anyone want it?), Speedbleeders, Vortex sliders, fender elimated, GP Shift
Ohlins, Racetech, Showa Custom Suspension

Teaching Fun and Prosperity

Post #: 1

RE: Idle speed - 2/15/2007 5:22:19 PM

racer212

Posts: 330
Joined: 8/15/2006
Status: offline

Increasing the idle makes it easier to downshift fast-easier to match the engine/tranny speed. At the the track I idled my F4 at 2500 to 3k

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Scott Newlin
www.rocketcitypowersports.com
2005 CBR1000RR - Race Track Weapon
1999 CBR600F4 - Weekend thrash monster
1993 CBR600F2 - Babe magnet

(in reply to Jaybird180)

Post #: 2

RE: Idle speed - 2/15/2007 10:33:56 PM

Jason748

Posts: 416
Joined: 10/22/2006
Status: offline

I usually run 2000 - 2500, BUT I also have a slipper clutch in my bike, which make a big difference. Without one I would run a little higher, about the same range as racer212.

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05 CBR600RR - RACE
98 Ducati 748S - Street & Track
60 Ducati 200SS - Fun
89 RM125 - Dirt

Thanks to my 2007 sponsors: Two Brothers Honda, Lithium Motorsports, LockhartPhillips TP, CBR600RR.com

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Post #: 3

RE: Idle speed - 2/16/2007 1:47:34 PM

vipkat

Posts: 44
Joined: 7/6/2006
Status: offline

Is the slipper cluch on your 600 RR? Any info you can give regarding?

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RE: Idle speed - 2/16/2007 5:04:47 PM

Jason748

Posts: 416
Joined: 10/22/2006
Status: offline

Yep in the 600RR, actaully I also have one in my 748 as well.
I have a Yoyodyne slipper in the 600, it really settles down the bike on corner entry. You just have to be carefull and install the clutch pack correctly as it's stacked in a different order than stock clutch. For a track only or race bike I can't recommened a slipper highly enough. If I could only do two modification to a race bike (other than basic race prep) #1 would be suspension and #2 would be a slipper clutch.

I also have a STM slipper in my 748, while the build quality is just as good as the Yoyodyne unit, it's a little harder to get set-up correctly and costs about $300 more.

_____________________________

05 CBR600RR - RACE
98 Ducati 748S - Street & Track
60 Ducati 200SS - Fun
89 RM125 - Dirt

Thanks to my 2007 sponsors: Two Brothers Honda, Lithium Motorsports, LockhartPhillips TP, CBR600RR.com

(in reply to vipkat)

Post #: 5

RE: Idle speed - 2/17/2007 7:58:09 AM

vipkat

Posts: 44
Joined: 7/6/2006
Status: offline

yeah I had a 250 two stroke for a while and it had little or no engine breaking, the cbr's engine breaking is really tough to get used to and i could see the benefits on the track

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http://www.motorevv.com/

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Post #: 6

RE: Idle speed - 9/24/2007 11:42:56 AM

Jaybird180

Posts: 2530
Joined: 5/12/2006
Status: offline

So for the trackday rider like myself, would increasing the RPM be essential? Shouldn't I do it in small increments? I'm comfortable downshifting/braking/blipping.

_____________________________

TrackDay Ready 02''F4i
ZG Double Bubble, Galfer SS Lines, PCIIIr, Muzzy s/o, NRC cover, Shift Minder(anyone want it?), Speedbleeders, Vortex sliders, fender elimated, GP Shift
Ohlins, Racetech, Showa Custom Suspension

Teaching Fun and Prosperity

(in reply to vipkat)

Post #: 7