Herky - Jerky Throttle Response

[Damfino_imp]

Sheesh!!

herky–jerky /ˈhɚkiˈʤɚki/  adjective
Learner's definition of HERKY–JERKY

: not smooth or graceful
:marked by sudden movements or changes

[TINK_imp]

I own a 2009 ST1300 that suffered from severe jerky throttle fuel cut syndrome. No Power Commander available, so I went with a G2 Throttle Tamer http://www.g2ergo.com/
The Throttle Tamer cured 90% of the issue with the ST1300, and it's only $80. Ya,ya, I did the throttle cable adjust and even synced the throttle bodies first, but no improvement. Some ST1300 owners say they can learn to manage the ST1300 throttle, but I'm just too ham-fisted I guess. While they don't specifically list the CB1100 on there web site, I would imagine any Honda Throttle Tamer would fit the CB1100 as Honda tends to have one design for something as generic as a throttle tube.

TINK

[Tortuga_imp]

I think it came from watching a dance where the person was acting like a turkey. they called it the herky jerky turkey dance.

You know the rules around here, post videos or it didn't happen!

[lackskill_imp]

Mine was due to chain slack being almost double spec on delivery... Once I adjusted it properly, it's as smooth as any modern injected bike I've been on.

Where does Herky-jerky come from?

Where does Herky-jerky come from?
chain slap. The slack in the chain will literally transition from top to bottom or vice versa depending on which throttle transition.

Think of it like pulling on a rope. If the rope has slack in it, you'll experience very little resistance followed by a sudden jerk. If the rope has no slack the resistance is linear and immediate.

The acceleration jerk is the transmission drive gear pulling on the chain and taking up the slack. The deceleration jerk is because of the final drive gear pulling on the chain and taking up the slack.

Where does Herky-jerky come from?
chain slap. The slack in the chain will literally transition from top to bottom or vice versa depending on which throttle transition.

Think of it like pulling on a rope. If the rope has slack in it, you'll experience very little resistance followed by a sudden jerk. If the rope has no slack the resistance is linear and immediate.

The acceleration jerk is the transmission drive gear pulling on the chain and taking up the slack. The deceleration jerk is because of the final drive gear pulling on the chain and taking up the slack.

Ok, thanks I feel bad now, I wasted your time explaining the symptoms to me.

What I was asking is where the EXPRESSION 'Herky jerky' came from.

Where does Herky-jerky come from?
chain slap. The slack in the chain will literally transition from top to bottom or vice versa depending on which throttle transition.

Think of it like pulling on a rope. If the rope has slack in it, you'll experience very little resistance followed by a sudden jerk. If the rope has no slack the resistance is linear and immediate.

The acceleration jerk is the transmission drive gear pulling on the chain and taking up the slack. The deceleration jerk is because of the final drive gear pulling on the chain and taking up the slack.

Ok, thanks I feel bad now, I wasted your time explaining the symptoms to me.

What I was asking is where the EXPRESSION 'Herky jerky' came from.
lol, no worries. I feel like a dummy for explaining it.

You can tell the difference between drive train play, and RPM drops and surges...you can't fix what the PCV does by tightening a chain or throttle play, its different.

I haven't felt any throttle surge on this bike. Chain slap, yes. Twitchy tip-in, a little. Otherwise it's been very smooth for me.

I'm guessing there are at least 3 different types of throttle inconsistency symptom being discussed in here, maybe I misinterpreted the original question.

[TINK_imp]

Update:

I'm going to try a G2 Street Tamer on my CB1100. I contacted G2 to ask which one to by for my CB1100, here's what they said:

From: Gary J Gibbs <gary@g2ergo.com>
To: "'Brian \"TINK\" Tinkler'" <tinkler@xxxxxx.com>
Subject: RE: Honda 2014 CB1100 G2 Street Tamer?
Date: Oct 13, 2014 7:16 AM

Yes, it just isn't listed. Sorry about that!
Here is the link and model to order (same as ST1300):
http://www.g2ergo.com/store/g2-street-ta...ttle-tube/

Thanks!!
Gary

-----Original Message-----
From: Brian TINK Tinkler [mailto:tinkler@xxxxxxx.com]
Sent: Saturday, October 11, 2014 7:58 PM
To: street.tech@g2ergo.com
Subject: Honda 2014 CB1100 G2 Street Tamer?

Can you tell me if there is G2 Street Tamer for the 2014 Honda CB1100. please, thanks.

Brian "TINK" Tinkler

I own a 2009 ST1300 that suffered from severe jerky throttle fuel cut syndrome. No Power Commander available, so I went with a G2 Throttle Tamer http://www.g2ergo.com/
The Throttle Tamer cured 90% of the issue with the ST1300, and it's only $80. Ya,ya, I did the throttle cable adjust and even synced the throttle bodies first, but no improvement. Some ST1300 owners say they can learn to manage the ST1300 throttle, but I'm just too ham-fisted I guess. While they don't specifically list the CB1100 on there web site, I would imagine any Honda Throttle Tamer would fit the CB1100 as Honda tends to have one design for something as generic as a throttle tube.

TINK

[VTR1000F_imp]

So, you inspired me with the Tamer. I purchased it yesterday and now I´m waiting for it to arrive. I gues that the bike will be even more sweeter than it is now! Like a candy :-)

[Dakota_imp]

I put heated grips on this summer and, because of the grips actually being a bit different size, the throttle was fairly tight. It made a HUGE difference in the driveability. Keeping the chain on the tighter side also helps. I really don't understand why so many jump to a programmer before fixing the mechanical issues first.

[gossman_imp]

I put heated grips on this summer and, because of the grips actually being a bit different size, the throttle was fairly tight. It made a HUGE difference in the driveability. Keeping the chain on the tighter side also helps. I really don't understand why so many jump to a programmer before fixing the mechanical issues first.

Because of the internet's corporate personality. Last motorcycle forum I was on everyone yanked the cats, baffles, etc.. to make the bikes "breathe better" and get "better" performance which meant that programmers had to be installed to change the fuel ratio. Everyone imagines that they themselves are smarter than the engineers who designed the bikes.

I'm not a person who jacks up his 4x4, make modifications to motorcycles, or much of anything to things I buy. Don't have the money to spend and since I research my purchases I buy what I need. I don't buy a Honda Ruckus to make into a cruiser. All that said, I understand that I'm a boring guy and that the new world wasn't discovered by my kind of guys. So to each their own.

[the Ferret]

I put heated grips on this summer and, because of the grips actually being a bit different size, the throttle was fairly tight. It made a HUGE difference in the driveability. Keeping the chain on the tighter side also helps. I really don't understand why so many jump to a programmer before fixing the mechanical issues first.

Because of the internet's corporate personality. Last motorcycle forum I was on everyone yanked the cats, baffles, etc.. to make the bikes "breathe better" and get "better" performance which meant that programmers had to be installed to change the fuel ratio. Everyone imagines that they themselves are smarter than the engineers who designed the bikes.

I'm not a person who jacks up his 4x4, make modifications to motorcycles, or much of anything to things I buy. Don't have the money to spend and since I research my purchases I buy what I need. I don't buy a Honda Ruckus to make into a cruiser. All that said, I understand that I'm a boring guy and that the new world wasn't discovered by my kind of guys. So to each their own.

right there with ya brother!

[CIP57_imp]

I own a 2009 ST1300 that suffered from severe jerky throttle fuel cut syndrome. No Power Commander available, so I went with a G2 Throttle Tamer http://www.g2ergo.com/
The Throttle Tamer cured 90% of the issue with the ST1300, and it's only $80. Ya,ya, I did the throttle cable adjust and even synced the throttle bodies first, but no improvement. Some ST1300 owners say they can learn to manage the ST1300 throttle, but I'm just too ham-fisted I guess. While they don't specifically list the CB1100 on there web site, I would imagine any Honda Throttle Tamer would fit the CB1100 as Honda tends to have one design for something as generic as a throttle tube.

TINK

Tink,

Ivans of Rockland County makes a fuel cut eliminator, Its more of a electronic device than the throttle tamer. Here is the link in case your interested. The item is made to work with a stock bike.

http://www.ivansperformanceproducts.com/st1300.htm