Throttle lag?

arcman · March 16th, 2010, 12:43 AM

Not sure what the issue is here or even if there is one: when I twist the throttle I get a small about of lag from when I turn the throttle before the bike accelerates. It's hard to describe but it feels like the first few mm of travel doesn't do anything then the power starts to come on. I'm trying to be really smooth in my acceleration around corners and from a standing start and find that the bike feels like it is jerking rather than coming on smooth. Hope that makes sense. I've just had a 24k service and mentioned this to the guys who said that they'd turned the low throttle (I think that's what it was) up three turns. I can't feel any difference though. There doesn't seem to be any issue with sticking: turning the bars all the way doesn't make the engine change revs and I'm only feeling this from a fully closed throttle. No difference either from cold to operating temp to sustained riding.

Thanks for any advice you can give.

A.

Momaru · March 16th, 2010, 01:04 AM

Is it like the throttle is loose and you can roll it a couple mm without anything happen when the throttle's closed? There's supposed to be 2-3mm of 'play' in the throttle cables to make sure the throttle closes all the way when there's no input. If there's too much (or you just want to fine-tune it a bit) just follow the cables to the front right side of your carbs; both throttle cables hook up to a rotator cuff that's kinda hidden behind the radiator overflow reservoir cap. Just before the carb-end terminus of the cables is a clamp with screw threads and a couple nuts for adjusting the length of the cables a little bit.
DSC04940.jpg

However if you're talking about a 'bog' from a stop (when you give it gas engine revs up a bit, RPMs drops off then RPMs resume rising), that's likely a carb tuning issue.

CC Cowboy · March 16th, 2010, 09:31 AM

It takes a while for the turbo to spoolup (spin fast enough). This is normal.

2WheelGuy · March 16th, 2010, 09:53 AM

As a safety feature bikes are shipped in "B" mode to many markets outside the US. The "B" mode reduces power and throttle response. Dealers in these markets can not engage "A" mode until the bikes have at least 10,000km (6,214miles) on the odometer.

Paypal me $25.00 US and I will send you instructions to engage full power and throttle response.

kkim · March 16th, 2010, 09:59 AM

Quote:

Originally Posted by 2WheelGuy

Paypal me $25.00 US and I will send you instructions to engage full power and throttle response.

I'll send you the instructions for $20!

Kawikaze · March 16th, 2010, 10:04 AM

whoops, it's time for me to adjust my cable then. I was getting pretty tired of going through the twisties on my way home from work with that irritating lag.

I want to make sure my turbo spools up readily.

CC Cowboy · March 16th, 2010, 10:13 AM

Quote:

Originally Posted by 2WheelGuy

As a safety feature bikes are shipped in "B" mode to many markets outside the US. The "B" mode reduces power and throttle response. Dealers in these markets can not engage "A" mode until the bikes have at least 10,000km (6,214miles) on the odometer.

Paypal me $25.00 US and I will send you instructions to engage full power and throttle response.

Quote:

Originally Posted by kkim

I'll send you the instructions for $20!

Send me $50. These other guyz are just "shimmers" and really don't know how to do the full 33hp "A" mode.

arcman · March 17th, 2010, 05:16 PM

Sigh.

kkim · March 17th, 2010, 10:39 PM

shim the needles in the carbs.

http://www.ninjette.org/forums/showthread.php?t=9465&

arcman · March 18th, 2010, 12:22 AM

Quote:

Originally Posted by kkim

shim the needles in the carbs.

http://www.ninjette.org/forums/showthread.php?t=9465&

Thanks Kkim. Makes sense. Can you tell if you need to do this with a dyno or something like that? Mine never needs choke, even in winter (kept inside a warm garage), doesn't stall, but does feel "flat" when the throttle comes on from fully closed.

Tks,
A.

kkim · March 18th, 2010, 10:17 AM

how fast are you turning the throttle? if you are expecting lightning fast throttle response, it ain't gonna happen w/ the CV carbs our bikes have. If it's a lean condition due to lean jetting, shimming will help.

CC Cowboy · March 18th, 2010, 11:02 AM

Kelly, how ya been buddy. I haven't seen you post lately. I heard rumors that you bought a big Harley and was cruisin the Big Island in a grass skirt.

Stay away from the Kona bud!

kenji_808 · March 18th, 2010, 11:04 AM

Posted via Mobile Device

kkim · March 18th, 2010, 11:14 AM

Quote:

Originally Posted by CC Cowboy

Kelly, how ya been buddy. I haven't seen you post lately. I heard rumors that you bought a big Harley and was cruisin the Big Island in a grass skirt.

Stay away from the Kona bud!

Aloha, "Oscar"

Been spending a lot of time crashing with the dirt bikes.

Sounds like you've been having fun at the tracks?

Stay at sea level there, too, bud.

kenji_808 · March 18th, 2010, 11:19 AM

to solve the throttle lag i just adjusted the throttle cable to the point where the throttle is just about to open (do this with the bike on and watch the tach rise as you adjust it and then back off just a tad). also an easy way to solve the starting off lag from a stand still is too just ride the clutch a little..

I also adjusted the clutch disengagement point to about a 1/2 in of lever travel compared to the 3 in of
stock travel cause for me i have small asian hands and having to pull in the lever to more than half way was cramping my hands but dont go adjust it any more than that or you wont be able to disengage the clutch

eventually im gonna get pazzo levers to really to fix my problem but these are cheap and easy fixes
Posted via Mobile Device

March 16th, 2010, 12:43 AM	#1
arcman Love to ride Name: Andrew Location: Melbourne, Australia Join Date: Apr 2009 Motorcycle(s): 2011 ZX10-R Posts: 36	Throttle lag? Not sure what the issue is here or even if there is one: when I twist the throttle I get a small about of lag from when I turn the throttle before the bike accelerates. It's hard to describe but it feels like the first few mm of travel doesn't do anything then the power starts to come on. I'm trying to be really smooth in my acceleration around corners and from a standing start and find that the bike feels like it is jerking rather than coming on smooth. Hope that makes sense. I've just had a 24k service and mentioned this to the guys who said that they'd turned the low throttle (I think that's what it was) up three turns. I can't feel any difference though. There doesn't seem to be any issue with sticking: turning the bars all the way doesn't make the engine change revs and I'm only feeling this from a fully closed throttle. No difference either from cold to operating temp to sustained riding. Thanks for any advice you can give. A.

March 16th, 2010, 01:04 AM	#2
Momaru ninjette.org certified postwhore Name: Paul Location: Roanoke, VA Join Date: Jun 2009 Motorcycle(s): 2008 Candy Plasma Blue 250R Posts: A lot.	Is it like the throttle is loose and you can roll it a couple mm without anything happen when the throttle's closed? There's supposed to be 2-3mm of 'play' in the throttle cables to make sure the throttle closes all the way when there's no input. If there's too much (or you just want to fine-tune it a bit) just follow the cables to the front right side of your carbs; both throttle cables hook up to a rotator cuff that's kinda hidden behind the radiator overflow reservoir cap. Just before the carb-end terminus of the cables is a clamp with screw threads and a couple nuts for adjusting the length of the cables a little bit. DSC04940.jpg However if you're talking about a 'bog' from a stop (when you give it gas engine revs up a bit, RPMs drops off then RPMs resume rising), that's likely a carb tuning issue. __________________________________________________ Proud member of the Blue Army

March 16th, 2010, 09:31 AM	#3
CC Cowboy ninjette.org certified postwhore Name: Whodat Location: Ware Is.,MA Join Date: Jan 2009 Motorcycle(s): I pass the wind! Posts: A lot. MOTM - Mar '13, Jun '14	It takes a while for the turbo to spoolup (spin fast enough). This is normal. __________________________________________________ If everything seems under control; you're just not going fast enough!

March 16th, 2010, 09:53 AM	#4
2WheelGuy ninjette.org certified postwhore Name: Craig Location: Silicon Valley, CA USA Join Date: May 2009 Motorcycle(s): '98 EX250, '02 EX250, '08 250r, '03 SV650, '98 GSXR750 '03 Hayabusa, '87 YSR50, '84 ZX900, +MORE Posts: A lot.	As a safety feature bikes are shipped in "B" mode to many markets outside the US. The "B" mode reduces power and throttle response. Dealers in these markets can not engage "A" mode until the bikes have at least 10,000km (6,214miles) on the odometer. Paypal me $25.00 US and I will send you instructions to engage full power and throttle response. __________________________________________________ CraigHarris.org Pacific Track Time CraigsWeb See you at 2014 MotoGP Laguna Seca! We'll be camping on Fox Hill. AFM #278

March 16th, 2010, 10:04 AM	#6
Kawikaze * Name: Daniel Location: East Bay CA Join Date: Jul 2009 Motorcycle(s): '09 Ninja 250R SE (Sold) Posts: 41	whoops, it's time for me to adjust my cable then. I was getting pretty tired of going through the twisties on my way home from work with that irritating lag. I want to make sure my turbo spools up readily. __________________________________________________ I started out with nothing & still have most of it left.

March 17th, 2010, 05:16 PM	#8
arcman Love to ride Name: Andrew Location: Melbourne, Australia Join Date: Apr 2009 Motorcycle(s): 2011 ZX10-R Posts: 36	Sigh.

March 17th, 2010, 10:39 PM	#9
kkim Join Date: Nov 2008 Posts: Too much.	shim the needles in the carbs. http://www.ninjette.org/forums/showthread.php?t=9465&

March 18th, 2010, 10:17 AM	#11
kkim Join Date: Nov 2008 Posts: Too much.	how fast are you turning the throttle? if you are expecting lightning fast throttle response, it ain't gonna happen w/ the CV carbs our bikes have. If it's a lean condition due to lean jetting, shimming will help.

March 18th, 2010, 11:02 AM	#12
CC Cowboy ninjette.org certified postwhore Name: Whodat Location: Ware Is.,MA Join Date: Jan 2009 Motorcycle(s): I pass the wind! Posts: A lot. MOTM - Mar '13, Jun '14	Kelly, how ya been buddy. I haven't seen you post lately. I heard rumors that you bought a big Harley and was cruisin the Big Island in a grass skirt. Stay away from the Kona bud! __________________________________________________ If everything seems under control; you're just not going fast enough!

March 18th, 2010, 11:04 AM	#13
kenji_808 ninjette.org member Name: Justin Location: Ewa Beach, HI Join Date: Feb 2010 Motorcycle(s): 2009 CT Blue 250R(Sold), 2008 Black & Silver Honda CBR600RR(Current) Posts: 201	Posted via Mobile Device

March 18th, 2010, 11:19 AM	#15
kenji_808 ninjette.org member Name: Justin Location: Ewa Beach, HI Join Date: Feb 2010 Motorcycle(s): 2009 CT Blue 250R(Sold), 2008 Black & Silver Honda CBR600RR(Current) Posts: 201	to solve the throttle lag i just adjusted the throttle cable to the point where the throttle is just about to open (do this with the bike on and watch the tach rise as you adjust it and then back off just a tad). also an easy way to solve the starting off lag from a stand still is too just ride the clutch a little.. I also adjusted the clutch disengagement point to about a 1/2 in of lever travel compared to the 3 in of stock travel cause for me i have small asian hands and having to pull in the lever to more than half way was cramping my hands but dont go adjust it any more than that or you wont be able to disengage the clutch eventually im gonna get pazzo levers to really to fix my problem but these are cheap and easy fixes Posted via Mobile Device

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Full throttle kills bike, throttle lag response.	Diegone	2008 - 2012 Ninja 250R Tech Talk	10	April 30th, 2014 03:25 AM
Did your pregen lag at ~5k on roll on?	Lychee	1986 - 2007 Ninja 250R Tech Talk	22	February 16th, 2013 06:07 PM
How hard does CA DMV lag it??	broilmebk	Off-Topic	6	July 4th, 2012 04:29 PM
Acceleration lag?	Kevin2109	2008 - 2012 Ninja 250R Tech Talk	30	September 6th, 2011 09:28 PM