Over Rev

Started by hackers2r, January 28, 2010, 05:39:02 PM

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printman

have had the 900 way over what should be run, not worried about the valves, but the piston speed is what will cause problems. Had it up to high 10's on the manual tach.
I'll update this later at a convenient time Thank you for tuning in.....

Raux

Quote from: printman on January 31, 2010, 03:12:15 PM
have had the 900 way over what should be run, not worried about the valves, but the piston speed is what will cause problems. Had it up to high 10's on the manual tach.

safe operating range for the 68 crank is 10125   theoretical max is 11250 based upon piston speeds.

WhiteStripe

#17
I mean no disrespect, but do you weigh like 400 pounds??

A couple of times i have downshifted from 2nd to 1st, thinking i was going 3rd to 2nd, at say 20 - 30mph and the back end has slid like i was locking up the coaster brake on my old bananna seat huffy.

2006 S2R 1000, Arrow CF exhaust, FatDuc 02, CF open cc with stock pp

scott_araujo

I'm a hefty 220# and on an errant downshift the rear wheel slid.  I've got the 800 Dark so no lsipper in my bike. 

Generally the fuel cutoff will protect you on acceleration and either the slipper clutch or I would guess the limits of rear wheel traction would protect you on deceleration.  Beyond that, over-revving briefly either way a few times shouldn't destroy anything unless you really get up in the revs.  Even a little above the usual cutoff can sound like a banshee sqealing though.  Don't worry, ride on ;)

Scott

corey

i know there has been a lot of speculation about that APTC unit in the S2R800's... but i know for a fact that i LOVE mine, and it works VERY WELL.
When all the land lays in ruin... And burnination has forsaken the countryside... Only one guy will remain... My money's on...

scott_araujo

Can you still get some decent engine braking with the APTC?

Scott

corey

Quote from: scott_araujo on February 04, 2010, 11:17:45 AM
Can you still get some decent engine braking with the APTC?

Scott

yep.
it only kicks in when the wheel would lock up. which means you've done something wrong, and wouldn't be engine braking anyway... but rather sliding to your doom.
When all the land lays in ruin... And burnination has forsaken the countryside... Only one guy will remain... My money's on...

scott_araujo

Quote from: corey on February 04, 2010, 12:09:04 PM
but rather sliding to your doom.

No, that's 'dynamic engine braking', an advanced technique not for the faint of heart.   [laugh]

Scott

NAKID

Quote from: corey on February 04, 2010, 12:09:04 PM
yep.
it only kicks in when the wheel would lock up. which means you've done something wrong, and wouldn't be engine braking anyway... but rather sliding to your doom.

The wheel will still lock up with that clutch. AMHIK...
2005 S2R800
2006 S2R1000
2015 Monster 821

Heath

Quote from: WhiteStripe on February 03, 2010, 04:57:07 AM
I mean no disrespect, but do you weigh like 400 pounds??

A couple of times i have downshifted from 2nd to 1st, thinking i was going 3rd to 2nd, at say 20 - 30mph and the back end has slid like i was locking up the coaster brake on my old bananna seat huffy.



Keep in Mind you don't have the APTC on your 1000.

2007 Ducati Monster S4RT
2006 Ducati Monster S2R800 Dark [sold]

corey

Quote from: NAKID on February 04, 2010, 02:45:42 PM
The wheel will still lock up with that clutch. AMHIK...

most definitely. the APTC only forgives you to a point.
when it locks, it kinda skips... sorta like antilock brakes for engine braking.
it's wierd, i like it.
When all the land lays in ruin... And burnination has forsaken the countryside... Only one guy will remain... My money's on...