Downshifting problem

Metalefty

New member
Hi all,
It's been awhile since my '05 450 has given me any problems and this one may be my fault.
The bike is set up with a Rekluse clutch, the upshifting is a little notchy but OK, the downshifting is horrible, especially from 2nd to 1st. Early in the season it would take an extra stab or two to get into the next lowest gear, but now it takes 10 stabs to downshift. When downshifting to 1st, I could always tell when it made the shift because the lever would stop in the middle, but now it moves down through it's range as if it coming from a higher gear.
For the last two years, the clutch has always made a clunk when shifting to first at a dead stop and made a slight lurch forward, but it will start in gear(barely). In the Rekluse manual it stresses the importance of pad/plate clearance which I've checked numerous times and it's always been i spec. They say that is the main reason for clutch drag. I've always left it the way it was because it was in spec.
Before my ride this past weekend, I decided to change the engagement point which I've always had set at the lowest engagement point, I then set it to it's highest engagement point. When I took it up the road for a test ride it shifted to 1st from a dead stop no problem, no lurch, just a nice click, the upshifts still felt notchy but good and the downshifts slightly better. I figured I would go on this ride and see what happens, maybe as it warmed up it would get better.
It wasn't any better. Still 10 or so stabs to downshift.
What are your thoughts on this? Would the slight drag from the clutch after two years have an affect on the shifter mechanism or the gears themselves? If it's the shifter mechanism, do you need to split the cases on a 450 to get to it?

P.S. Thought this was interesting, met up with 9 other riders, 8 of them I've never ridden with before, most on KTM's. Turned out I was the second fastest rider there, even with the shifting problem(luckily it was slow technical single track). The bike drew lots of attention and a couple of guys on older bikes who were looking to upgrade, were now considering a Gasser. None of them have seen a Gasser 4 stroke before. Hope my exposure helped.
 
The scorpion spring on every 05 i sold had to be changed as they were weak causing the problem you have.
 
Thank goodness, so I changed the spring which my dealer had in stock and went for a ride yesterday evening. It shifts perfectly now, even better than when it was new, wish I would have known about that spring when I first got the bike. My confidence is back up and I feel better about other people riding the bike.
Thanks again Nick...:)
 
I wonder if this Scorpion Spring replacement relates to my '05 fse too? Shifting from 2nd down to 1st is notchy and sometimes only goes into nuetral. I've had this problem since day one. It has got me into trouble more than once.
Nick , if the Scorpion spring will remedy my shift problem, I'll order one from U. Thanks, Bob
 
It sounds like it will fix your problem to. Just take out your clutch basket and it's down to the left, you can't miss it and it's easy to change.
 
The scorpion spring on every 05 i sold had to be changed as they were weak causing the problem you have.

Does this apply to the 2-strokes as well?My 05' DE300 stuck in first gear for a while sunday,then started shifting fine again.Pulling it apart tonight & will post what I find.It has been getting more notchy with time,just bled new clutch fluid in and adjusted play so thats out of the equation.
 
Motorhead it is the same for the 2smokes. What happened on your bike is a tiny metal shaving in your oil caused enough drag on the scorpion gear that the weak spring could not overcome it and pull the gear back into place. Very tiny burrs on the scorpion gear can cause the same problem as well. Problems don't show up until normal wear on the gearbox and clutch cause contamination of the oil and thereby extra drag on the scorpion gear. When you have it apart take the time to smooth the edges of the scorpion gear even if they already feel smooth.
 
I didn't mean to imply that this is a problem with all bikes but the scorpion gear is an easy fix and something I'll do with every new GASGAS I buy.
 
Upon further inspection my shift shaft was bent pretty good.A reinforced cut-off wheel on the dremel took care of that.I noticed the new scorpion spring was shorther and seemed stiffer then the factory one I replaced even though my local parts man said the p/n had not been superceded or changed.Even though my manual showed the scorpion itself separate with a part # the parts man said scorpion can only be had with shift shaft assembly?I buttoned it back up with the old scorpion and it shifts much better now than it did before I bent the shaft.If any dealers out there have just the scorpion I'd like to purchase as mine was damaged on back side from contact with shift star.
 
shift shaft scorpion IS available afterall!

:cool: Guess what showed up today? A me250236036 shift claw! I apoligize for my dumbfounded lack of short term memory loss as I'm not accustomed to receiving parts from my local dealer a whole week after ordering them,they usaualy show up the next day and since I cant remember what it was I did yesterday,forget last week.Anyway I was wrong-you can get just the scorpion.Oh,did I mention in the last post that dealer had "everything" in stock except for the "shift claw"?Try to recreate that scenario at your local "big 5" dealership.
 
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