The "Herky Jerky" Canundrum

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GreyGoose

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I recently did the Fred H. shim modification and thought i should post the "low down" on this farkle

Lets start with installation:

Installation goes just about dead on what fred explains. You:

1. Pull the tank

2. Get the heat shield out of the way (we did not have to remove the t bar)

3. Pull off a few vacuum hoses (which give you a clean shot at the throttle body)

4. Hook the shim around the throttle body and rotate it around 300 degrees

5. push the wire down in the groove. it will go all the way down into the pulley system and still allow for enough room for the wire to still track correctly.

6. Put everything back together

Thats about it.

If your concerned about the shim coming out, you shouldnt be. We even put the shim in and then made a minor modification to it by bending the loop at a little steeper angle to minimize the gap in the loop that was made to originally hook it on. That thing aint comin out. Took about 30 minutes to do the whole job with a buddy of mine (and we aint wrenchers).

Lets talk about results:

This fix does amazing things to the behavior of the bike in everyday driving situations. I wont say that it completely eliminates this issue, but its pretty damn close. The bike is much much better with this mod in those situations. Its just about what is should have been like coming off the showroom floor. If this is a bothersome issue for you, you owe it to yourself to do the mod.

Now i'm not saying that this thing is the end all to your problems with the "herky jerky". Technically challenging roads (like the dragon for instance) requiring 2nd gear hard acceleration / deceleration will still be plagued with this issue .....but not near as much as before.

Pappy and i took a "spirited" ride today and were able to swap bikes (05 FJR & 06 FJR). The 05 does not display any of those "herky jerky" characteristics. Pappy couldnt believe that the 06 acted that way (herky jerky) even after the mods. He couldnt comprehend how it must have been before the:

a. throttle body release

b. barbarian mod

3. Grip Puppies

4. Fred H. shim

Yamaha did not do us any favors with this Throttle pulley / new clutch actuation system combination. I firmly believe that the above 4 items make this bike issue the best it can be given the circumstances. Not what is should have been off the showroom floor, but getting close. After freds mod, i can now say that the herky jerky is an "annoyance". Before the mod, i considered it a show stopper.

Thats my 2 goose eggs worth. Whether there golden eggs or not will be subjective.

thanx again fred for you work in this area.

What a long strange trip its been!!!!!

GreyGoose

 
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The 06 FJR is a great motorcycle, it just need a little help to get the throttle control right. Once that minor bug is fixed, the bike is perfect.

 
The 06 FJR is a great motorcycle, it just need a little help to get the throttle control right. Once that minor bug is fixed, the bike is perfect.
I've got 500 miles with the Fred Shim in place. Love it and no issues at all!

 
I begin to wonder if somewhere in Japan there're a group of people sitting around a table wondering about this "Fred Shim" mod that everyone's been talking about....

Gotta admit, it sure sounds like something I'd like to do to my 06.

 
Yeah, I was amazed. I would've been upset with the way the throttle works AFTER all those fixes! Overall though, great bike. NO heat at any speed with the shield full-down. Legs get a little warm as it's raised but that's no issue. The throttle-jerkiness could be a big problem if was worse than Grey's ride after the fixes.

Sign me up for an '07!

Pappy

 
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I begin to wonder if somewhere in Japan there're a group of people sitting around a table wondering about this "Fred Shim" mod that everyone's been talking about....
Gotta admit, it sure sounds like something I'd like to do to my 06.
Ride on over to Grapevine some weekend and we'll do it. 30 min. tops!

 
Hey, bmwhd.....gotta set up for doing a tbs? How about a fork stem nut wrench?

 
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