Missed shift, think I hurt anything??


16 replies to this topic
  • THN394

Posted June 15, 2010 - 11:36 AM

#1

I've been working on learning to shift without the clutch on my 09 450. Well this past Sunday I was having some trouble shifting into 3rd at times. Sometimes I feel like I'm pulling up on the shifter hard and the bike just won't shift and other times it's smooth. Not sure if it's me or the bike yet. Anyway this past Sunday I was on the power and tried to shift and it sounded like it got caught between gears. There was a grinding sound and then it poped into gear. It didn't really act any different afterwards but I'm wondering if it might have caused some damage. Any opinions or similar cases?

  • Ryan426

Posted June 15, 2010 - 11:57 AM

#2

yeah, you might have dine something to 3rd. How long did it make the noise?

  • grayracer513

Posted June 15, 2010 - 12:50 PM

#3

It either broke or it didn't. You certainly added some wear, but if it works, you don't need to worry about it for now.

  • xr88honda

Posted June 15, 2010 - 12:58 PM

#4

blip the throttle when shifting,it will momentarily unload the back of the gear an will slide in,shouldn't have to force it,just pressure an blip or un-snap it how ever you want to call it,will go in awesome every time with minimum wear on the gears

  • Dirtjunkie85

Posted June 15, 2010 - 12:59 PM

#5

Shifting up while the engine is under a load can cause damage, if you really don't want to use the clutch down shifting is the best time to not use the clutch because the engine isn't under as much of a load as when shifting up. The time you might save not clutching is very little compared to the time you'll be out if you have to get into the case and repair what is broken.

  • THN394

Posted June 15, 2010 - 03:12 PM

#6

It only made the noise for about a second. Is there an easy way to check short of spliting the cases? I just don't want to find out something is damaged as I'm leaving the face of a jump.

  • YamaLink

Posted June 15, 2010 - 03:39 PM

#7

+1
Work on technique/timing; maybe have an experienced racer/rider show you or stand trackside and watch.

It either broke or it didn't. You certainly added some wear, but if it works, you don't need to worry about it for now.



  • grayracer513

Posted June 15, 2010 - 03:52 PM

#8

Is there an easy way to check short of spliting the cases?

Not really.

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  • condor74

Posted June 16, 2010 - 10:08 AM

#9

It doesn't sound like you hurt anything. Sounds like you just stuck between gears for a second. Blip the throttle or tap the clutch when shifting to avoid it in the futer. Also old worn oil in the trans side can cause hard shifting.

  • crf450319

Posted June 16, 2010 - 11:08 AM

#10

If it's shifting into 3rd now, with no issues then you haven't broken anything. Like others have said, you might have worn 3rd a little but there really isn't any point in splitting the cases.

That would be like taking the head/cylinder off the bike to check the piston after you hit the rev limiter, was it good for it - no, are you going to see any appreciable damage - not likely. Is it worth the time and effort splitting the cases to see a little wear, not in my opinion.

If you don't want to let off the throttle while shifting up, keep the throttle pegged and grab the clutch & shift in a split second. I don't mean you're supposed to keep the bike pinned, then pull the clutch all the way in to the bar, then shift. I mean, you take some of the load off the trans. with the clutch and as you're doing that already have some pressure on your shift lever. Once you hear the RPM spike a little, exert more pressure on your shift lever and you're golden.

I wouldn't personally try an upshift without either letting off the gas for a split second, or going with the method I've described. My method of choice (not that it matters) is the clutch pull/shift while still on the gas.

Also old worn oil in the trans side can cause hard shifting.

Here in the Yamaha world, we share crankcase/trans oil. Something I've had to get used to since switching from my CRF.

  • Scrubba

Posted June 16, 2010 - 10:39 PM

#11

some guy told me to keep the throttle pinned and just hit the kill button for a split second while you shift, to cut the power. like those drag racers or smething.

didnt want to try it, but does anyone do this?

  • grayracer513

Posted June 17, 2010 - 07:42 AM

#12

Don't do that.

  • hadameo

Posted June 17, 2010 - 07:45 AM

#13

One easy way to see if you hurt someting is pull your tranny plug and see what comes out!

  • Scrubba

Posted June 17, 2010 - 08:49 AM

#14

Don't do that.


ok thanks. i think i tried it once.

  • BBrown626

Posted June 17, 2010 - 08:50 PM

#15

I took the Champ Factory course with Tortelli a couple weeks ago. He teaches to shift under full throttle and assures the students it won't hurt anything.

I like to back off a bit or feather the clutch a tad when upshifting. I have to buy my bikes and repair them.

  • jratcliffe3

Posted June 22, 2010 - 01:14 AM

#16

I took the Champ Factory course with Tortelli a couple weeks ago. He teaches to shift under full throttle and assures the students it won't hurt anything.


I'd tend to agree with that. Having owned 8 bikes and shifted them all full throttle all of the time, I have never had a gearbox problem relating to that (the only time I had a gear box problem was when a clutch plate broke and part of it got into the box).

  • mxkid23

Posted June 22, 2010 - 10:55 AM

#17

wait why shoft with out the clutch anyways?





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