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Sep 21st, 2009, 7:34 am
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#1 (permalink)
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Senior Member
Join Date: May 2009
Location: Putnam County, New York, USA
Posts: 132
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Will a slipper clutch reduce engine braking?
Hey all, still loving the Hyper, but I have to admit that I'm growing weary of having to fight against the 1100's strong engine braking. Nearly every time I let off the gas, I slide up a little on the seat. I try to combat it with physical strength, slipping the clutch, etc., but in stop-and-go traffic, it gets very old and tiring very quickly.
Would a slipper on the Hyper reduce the engine braking effect? I don't need it to prevent wheel lock-up - I don't ride that aggressively - but if it smoothed out low/medium speed stop-and-go lurchiness, I might consider it.
Thanks!
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2008 Hypermotard 1100 - Red (sold) 
2006 Mutistrada 620 - Gloss Black (sold)
2004 BMW R1100S - Grey (sold)
2000 Aprilia Pegaso - Blue (sold)
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Sep 21st, 2009, 9:34 am
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#2 (permalink)
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Senior Member
Join Date: Dec 2007
Location: castiac, ca, usa
Posts: 102
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You might want to think about getting a aftermarket exhaust. The flapper valve sucks.
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Sep 21st, 2009, 10:30 am
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#3 (permalink)
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Senior Member
Join Date: Nov 2007
Posts: 2,558
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ciao activator -
having had the DP "bucci" strada slipper clutch on my hypertard for over a year now, i can advise that the engine braking is not reduced ... but rear wheel hop when downshifting is reduced to point that you cannot feel it at all.
perhaps this is what you are looking to obtain ... perhaps not.
i can also advise that installing a lightweight flywheel will not reduce engine braking, as is sometimes suggested. in fact, a lightened flywheel will increase engine braking feel to the rider, as there will be less rotating mass in the engine.
my suggestion to reduce engine braking feel when riding: ride smoother on deceleration ... roll off the throttle sooner and smoother when needing to slow down. in the stop and go traffic you mention, try holding on to the fuel tank covers by squeezing with your knees.
ciao,
johnc
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vīdī, vīcī, vēnī!
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Sep 21st, 2009, 10:32 am
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#4 (permalink)
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Senior Member
Join Date: Sep 2008
Location: New York, NY, USA
Posts: 377
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Quote:
Originally Posted by lugger
You might want to think about getting a aftermarket exhaust. The flapper valve sucks.
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Huh???
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- '08 Hypermotard S
- '03 Monster 800 (Gone!)
- '98 HD Fatboy (Gone!)
- '95 HD Road King
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Sep 21st, 2009, 11:45 am
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#5 (permalink)
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Senior Member
Join Date: Dec 2007
Location: Lake Mary, FL, USA
Posts: 104
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I agree the DP slipper clutch works great but not for your issue. Try running a higher gear and installing some Tech Spec grip pads I have them and they work great.
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2011 Multistrada S Touring Black
2010 BMW S1000RR Thunder Grey
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Sep 21st, 2009, 11:46 am
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#6 (permalink)
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Senior Member
Join Date: May 2009
Location: Putnam County, New York, USA
Posts: 132
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Johnny- Wheel hop is not the problem. I'm talking about the fact that any time I let off the throttle - even a little - it feels like I've grabbed the front brake. Sure, I can combat it by gripping the tank, arm strength, being smoother, etc, but it gets annoying when riding in town... I'm constantly scooching back on the seat.
It sounds like the slipper is not the answer to this dilemma. Hmmm...
__________________
2008 Hypermotard 1100 - Red (sold) 
2006 Mutistrada 620 - Gloss Black (sold)
2004 BMW R1100S - Grey (sold)
2000 Aprilia Pegaso - Blue (sold)
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Sep 21st, 2009, 12:05 pm
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#7 (permalink)
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Senior Member
Join Date: Mar 2008
Location: Oak Ridge, NJ, USA
Posts: 605
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G2 throttle, and some type of fuel management to smooth things up if you have not done so already. The G2 allows much more precise off idle throttle control.
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Glenn
'08 Ducati Hypermotard 1100
'07 GasGas EC250
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Sep 21st, 2009, 12:10 pm
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#8 (permalink)
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Lifetime Premium
Join Date: Jul 2007
Location: San Mateo County, CA, USA
Posts: 661
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"Snatchy Throttle" Syndrome?
Activator's complaints sound to me like symptoms of the "Snatchy Throttle Syndrome" caused by the overly lean stock set up.
Before resorting to lighten flywheels and slipper clutches, I think he would be well advised to make sure all other engine parameters are properly tuned, regardless of which exhaust or ecu are being used. Without so doing, my guess is a lighten flywheel would actually make it feel worse.
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Bill
2008 KTM 990 Adventure
2007 KTM 640 Adventure
2004 KTM 300 EXC
2003 KTM 525 EXC
1991 Ducati 851
1978 Moto Guzzi Lemans I
1974 Yamaha RD350
1931 Moto Guzzi 2VT
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Sep 21st, 2009, 12:29 pm
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#9 (permalink)
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Senior Member
Join Date: Nov 2007
Posts: 2,558
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agree ...
my comments on slipper clutches and lightened flywheels point out that these will not provide less engine braking.
Quote:
Originally Posted by BillyD
Activator's complaints sound to me like symptoms of the "Snatchy Throttle Syndrome" caused by the overly lean stock set up.
Before resorting to lighten flywheels and slipper clutches, I think he would be well advised to make sure all other engine parameters are properly tuned, regardless of which exhaust or ecu are being used. Without so doing, my guess is a lighten flywheel would actually make it feel worse.
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vīdī, vīcī, vēnī!
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Sep 21st, 2009, 1:31 pm
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#10 (permalink)
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Senior Member
Join Date: May 2008
Location: Kelowna, BC, Canada
Posts: 347
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I think part of the problem is the Hyper's long front end. The extra fork travel really amplifies the feeling of engine braking, front end dive and regular braking.
The first time I rode a Monster after being on my Hyper for a while, I thought to myself how terrible the brakes were. After riding the Monster for a while, I discovered that the brakes were fine, they just didn't feel as strong because the front end does not dive nearly as much on braking.
__________________
Cole
-2009 Monster 1100S - next on the list!
-2008 Hypermotard S (for sale)
-2008 848 (crashed by friend; sold for HMS)
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