Rockymountainatvmc.com - Dirt bike & ATV parts

RECENT POSTS


Using the clutch when shifting?

Joined
Sep 7, 1999
Messages
2
Likes
0
#1
I usually don't use my clutch when shifing over a double or even down a straight, I mostly use it to fan out of the curves or keep my power up when going through a series of doubles. I had a guy this weekend tell me that this will eventually fry my gear box. I change oil( mobil 15w50) VERY often. Anyone have any opinions on this? Brian
 
Joined
Sep 8, 1999
Messages
103
Likes
0
#2
As long as you are letting off the throttle when shifting there shouldn't be a problem. Are you finding lots of metal bits in your oil when you change it? This would be a good indicator of whether your shifting technique is causing excessive wear.
 
- a d v e r t i s e m e n t -

singletracker500

Lifetime Sponsor
Joined
Jul 24, 1999
Messages
484
Likes
0
#3
Got to agree with cycleboy. I never use my clutch to shift. I've never had a problem. I have a magnetic drain plug, it does get a little metal on it. But I don't think it's enough to worry about.

------------------
John
91CR500
It doesn't hurt till the bone shows!
singletracker500@eatmydirt.com
 
Joined
Sep 7, 1999
Messages
2
Likes
0
#4
Yeah I let off the throttle when I shift. I haven't noticed any debris in my oil. When you say "abuse" do you mean holding the juice to it and cramming the gears? I usually only use the clutch to like downshift going into a curve and feather it coming out. Sort of what bill is talking about. I sometimes downshift when I'm going over a jump and coming up on a really close curve on my landing "without" using the clutch. I do it while I'm in the air and grab the clutch just before landing. Oh well, thanks for the info guys, it just kinda worried me cause the guy who was telling me this is supposed to really know his stuff. Thanks!! Brian
 
Joined
Aug 11, 1999
Messages
1
Likes
0
#5
hey, i'm still new to this motocross thing, so excuse my ignorance. but when everyone talks about feathering their clutch in the corners are you talking about pulling in the clutch slightly? i went riding at the local track this weekend and tried this and it seemed to work. i want to get better and faster. HELP!!
 
- a d v e r t i s e m e n t -

Joined
Aug 9, 1999
Messages
67
Likes
0
#6
Feathering the clutch means that you slip the clutch just enough to keep your RPMs in the peak of the power band. Thie is useful so that you don't need to downshift in a turn to keep the power up.
I can take a turn fairly slowly in 3rd gear and then feather the clutch to keep the power up on the exit. Try it, you will find that you can even pull a wheelie in 3rd with very little speed. There are times you might want to downshift, but in a lot of cases if you go down to 2nd you will have to upshift to 3rd as soon as you exit the turn.

However, my friends tell me that I have gone to the extreme on this, and that I slip the clutch more than I really need to on a 250. Using it in turns is one thing, using it all over the track is another. (Plus it really tires the left hand out.) So, now I am trying to use the clutch as little as possible except in turns where sliping the clutch is necessary.

I think that I got into the habit of sliping the clutch so much on my practice track. At home, all of my doubles are right out of tight turns, I need to use the clutch a lot to get the drive to clear the jumps. When I get on a wide open MX course I need to learn to use the right gear when possible.



------------------
Reeko
99KX250
98XR400
 
Joined
Aug 18, 1999
Messages
138
Likes
0
#7
Gary Semics, who trained Jeremy McGrath, said in his book (Motocross and Off-Road Riding Technique) that you do not need to use the clutch when downshifting because there is no load.

According to Semics, use the clutch when upshifting, especially when on the throttle.

Most of the time us normal riders are not going to abuse the gears or clutches enough to worry whether or not we use the clutch all the time for upshifting.

I use my clutch to upshift maybe 1/2 the time.

------------------
Ivan Liechty
'93 WR250
 
Joined
Nov 10, 1999
Messages
7
Likes
0
#8
wow,  I didnt know so many people dont use their clutch all the time.   I always use mine,  up shifting and down.  I dont see any advantages of not using the clutch,  unless its just cause your lazy.  
 
Joined
Oct 11, 1999
Messages
5
Likes
0
#9
I use my clutch all the time as well. I tried not using it when I went out today to try it out but I can shift it up or down at the same speed using the clutch. PLus it felt odd not using it.



------------------

Arthur Lee
99 KX 125
 
Joined
Sep 8, 1999
Messages
103
Likes
0
#10
All the rookie riders overuse the clutch.
The disadvantages are increased wear and increased clutch heating which can lead to slippage. Am I lazy? Yes I am lazy but it has nothing to do with using the clutch.
<p align=right>11-19-1999 :Edited
 
- a d v e r t i s e m e n t -

Joined
Aug 17, 1999
Messages
1
Likes
0
#11
Overusing clutch makes you go slower. I know this from my experiences.
When I first started riding my KX80 i used clutch all the time, even downshifting and braking. Now when i am on the track i only use clutch
when upshifting on the gas and helping motor build up revs. when entering
a turn i just let off the gas, shift a gear down and brake. when i feel
that i can start accelerating i just pinn it and use the clutch with one
finger to build up the revs. I learned this from the PRO MOTOCROSS AND OFF-ROAD MOTOCYCLE RIDING TECHNIQUES (Eric Gorr's book)&nbsp;&nbsp;
 
Joined
Nov 10, 1999
Messages
7
Likes
0
#12
Well,&nbsp;&nbsp;F.Y.I I've been ridin for 7 years,&nbsp;&nbsp;so i wouldnt consider myself a rookie.&nbsp;&nbsp;
 
Joined
Sep 8, 1999
Messages
103
Likes
0
#13
Seven years huh. I guess you know just about everything there is to know about dirt ridin'. I've been at this twenty five years and I'm still learning. What's your secret?
 
Joined
Sep 22, 1999
Messages
4
Likes
0
#14
There are lots of uses for the clutch but using it to shift during a race is not one of them.&nbsp;&nbsp;It will not hurt the trany to shift without it.&nbsp;&nbsp;Don't worry about down shifting with it either.&nbsp;&nbsp;Over using the clutch will slow you down.&nbsp;&nbsp;The clutch should be used for starting and stopping and feathering when needed.&nbsp;&nbsp;
 

YZ250man

Member
Member
Joined
Jun 9, 2002
Messages
54
Likes
0
#15
This is confusing.

I don't upshift w/o clutch under power, only with throttle off, but almost always use it when downshifting.&nbsp;&nbsp;Isn't downshifting w/o clutch considered 'shifting under load?"

The only times I really use the clutch is to take off, feather for power, and downshifts.&nbsp;&nbsp;Is it OK to downshift w/o clutch (of course, not under power)?

Clarification, please.&nbsp;&nbsp;I'd rather buy clutches than transmissions, so I'd really like to know when it is most necessary to use the clutch to avoid abusing the transmission.

If *no* clutch use on a downshift is not abuse, then gee, that alone can make me faster.


------------------
Dave
89 YZ250WR

&lt;p align=right&gt;12-15-1999 :Edited<p align=right>12-18-1999 :Edited
 
- a d v e r t i s e m e n t -