Honda 919 Shifter arm position - Wrist Twisters
 
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post #1 of 15 Old 05-02-2013, 09:34 AM Thread Starter
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Honda 919 Shifter arm position

Later on ill be putting a new shifter arm on the shifter shaft. I'd like to know where exactly to position it and at what angle it needs to be in order to shift right.

Pictures of your shift arm would help.

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post #2 of 15 Old 05-02-2013, 09:46 AM
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Hope this helps.

The long center rod is left hand threaded on one side, and right hand threaded on the other.

So by putting the clamp on the shifter shaft just slightly left (counter clockwise) of 0 degrees - with the open cut at about 11 o'clock, you can use that long rod to adjust the height of the shifter pedal to match your liking. You can see where mine is in the pic.

shifter.jpg

I should mention, I learned to adjust mine a 'little' lower than it naturally feels good at, because this helps with 'missed' shifts (requires your foot to travel more, and you get more leverage when shifting up, especially between the clunky 1-2 gear range).

Also, you could switch to GP style shifting by rotating the shaft part on the shifter to the top side. This would reverse the direction of the shifts.

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post #3 of 15 Old 05-02-2013, 09:51 AM
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Quote:
Originally Posted by Callinmeupward View Post
Later on ill be putting a new shifter arm on the shifter shaft. I'd like to know where exactly to position it and at what angle it needs to be in order to shift right.

Pictures of your shift arm would help.
...position depends on your leg/foot angle on the peg and your footwear...pictures will get help you get into the correct neighborhood: then fine-tuning on it your own will pay great dividends...plus, it is always fun lying on the pavement beside your bike while making that adjustment: you will see many things that need cleaning!

By the way, after reading googl3it's post, I want to add I also reach that point of adjustment where the shifter feels right, and then I drop it just a (very) little bit lower...works good!

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post #4 of 15 Old 05-02-2013, 11:56 AM Thread Starter
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Thanks. Sounds good.

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post #5 of 15 Old 05-02-2013, 03:37 PM
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Keep in mind that the two short arms are ideally to be parallel, which is when the best linkage geometry will occur. If you do major changes away from normal, relocate the short arm on the shifter input to transmission shaft, in whatever direction it needs to go in order to get the two short arms more parallel. More than one spline tooth of relocation should not be needed. Many a shifting problem can be traced to screwed up geometry of the linkage, let alone whatever one's skill level and/or technique is.

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post #6 of 15 Old 05-02-2013, 03:47 PM
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Quote:
Originally Posted by mcromo44 View Post
Keep in mind that the two short arms are ideally to be parallel, which is when the best linkage geometry will occur. If you do major changes away from normal, relocate the short arm on the shifter input to transmission shaft, in whatever direction it needs to go in order to get the two short arms more parallel. More than one spline tooth of relocation should not be needed. Many a shifting problem can be traced to screwed up geometry of the linkage, let alone whatever one's skill level and/or technique is.
A very common error! Bellcranks should almost always run parallel!

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post #7 of 15 Old 05-02-2013, 04:36 PM
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Quote:
Originally Posted by HeliMech View Post
A very common error! Bellcranks should almost always run parallel!
I'll bet that HeliMech knows better than anyone, the potential bad effects of a botched bellcrank set up.
Gosh, golly gee, WHY didn't that flap work the way it was supposed to work?

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post #8 of 15 Old 05-02-2013, 04:44 PM
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Holy crap I did not know this. ^ Gonna have a look-see later on but I'm sure mine are not parallel since I've put on the Rizoma rearsets!

These are the bell cranks right?
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post #9 of 15 Old 05-02-2013, 04:50 PM
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Quote:
Originally Posted by andrewebay1 View Post
Holy crap I did not know this. ^ Gonna have a look-see later on but I'm sure mine are not parallel since I've put on the Rizoma rearsets!

These are the bell cranks right?
I didn't know until mcromo44 told me too. I kept missing my 1-2 shift until I corrected it.

Spoiler:

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post #10 of 15 Old 05-02-2013, 05:01 PM
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Quote:
Originally Posted by mcromo44 View Post
I'll bet that HeliMech knows better than anyone, the potential bad effects of a botched bellcrank set up.
Gosh, golly gee, WHY didn't that flap work the way it was supposed to work?
You can always just park on a cloud get out and fix it .......

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post #11 of 15 Old 05-02-2013, 05:03 PM
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Quote:
Originally Posted by andrewebay1 View Post
Holy crap I did not know this. ^ Gonna have a look-see later on but I'm sure mine are not parallel since I've put on the Rizoma rearsets!

These are the bell cranks right?
Yep that's them.

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post #12 of 15 Old 05-02-2013, 05:41 PM
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Our son can tell you that if you can't get a gearbox to click through all the gears going up and down while on the stand with a dead engine, then first check the linkage setup.
This is much better than throwing up from the feeling that you blew your first total engine strip and rebuild and thinking you have to take it apart again because of a gearbox error you made.
When all it was, was a lousy spline too far.

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post #13 of 15 Old 05-02-2013, 07:42 PM
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Quote:
Originally Posted by andrewebay1 View Post
Holy crap I did not know this. ^ Gonna have a look-see later on but I'm sure mine are not parallel since I've put on the Rizoma rearsets!

These are the bell cranks right?
+1! I'll have to take a closer look now. Learned something new today

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post #14 of 15 Old 05-02-2013, 08:33 PM
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Quote:
Originally Posted by mcromo44 View Post
Our son can tell you that if you can't get a gearbox to click through all the gears going up and down while on the stand with a dead engine, then first check the linkage setup.
This is much better than throwing up from the feeling that you blew your first total engine strip and rebuild and thinking you have to take it apart again because of a gearbox error you made.
When all it was, was a lousy spline too far.
Oh heck, did he really get sick over it? Dang, that would suck though...

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post #15 of 15 Old 05-03-2013, 03:15 AM Thread Starter
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And I thought I was asking a dumb question...

Well I got the shifter arm put on last night, haven't rode in a week and with the new tires, chain, shifter arm in a good spot and new sprockets she feels amazing. I mean truly amazing. I'll snap a linkage pic. If I remember right the transmission shaft clicked over best with the bell crank almost straight up and down. I tried a couple positions before that but she wouldn't even drop into first running. Working well now but might need a slight adjustment.

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