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2007_Yamaha_YZ_450F.jpg

Yamaha YZ450F (2007)


Owner: Yammy Rider
Added on November 29, 2016


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Yamaha YZ450F 2007


Last review by Yammy Rider
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Pics of your 06-09 yzf 450

Yamaha YZ450F 2007


268 replies to this topic
  • n16ht5

    TT Addict

3,344 posts
Location: Washington

Posted January 21, 2015 - 07:44 PM


Gray the bandaid comment wasn't aimed at you at all. I know a few people who kept stalling their bike so they got rekluse to "fix" that. I might have a different taste in my mouth had I gone with the Core instead of the z start as far as clutch feel. As far as switchbacks I usually don't have a problem, but I'm not a pro!



  • 700rScott

    TT Bronze Member

325 posts
Location: Pennsylvania
Garage View Garage

Posted January 22, 2015 - 08:13 AM


Gray the bandaid comment wasn't aimed at you at all. I know a few people who kept stalling their bike so they got rekluse to "fix" that. I might have a different taste in my mouth had I gone with the Core instead of the z start as far as clutch feel. As far as switchbacks I usually don't have a problem, but I'm not a pro!

 What do you mean clutch feel?



  • grayracer513
42,929 posts
Location: California
Garage View Garage

Posted January 22, 2015 - 09:19 AM


He means how the lever effort feels compared to stock.  The ZSP has an extremely light feel (something I like), whereas the Core EXP is reasonably "normal".

 

BTW, I'm going to be exporting this whole discussion into its own topic, as I just realized we're all of us clogging up a pictures only thread.  :naughty: 



  • 700rScott

    TT Bronze Member

325 posts
Location: Pennsylvania
Garage View Garage

Posted January 22, 2015 - 09:44 AM


Ok and that's what I thought he meant. If a light clutch lever is a bad thing why do they make so many hydrolic clutches? KTM is one of the biggest manufactures and they mostly have hydrolic clutches and you don't see too many people complaining about it besides automaticly adjusting so you can't feel it being burnt up.



  • grayracer513
42,929 posts
Location: California
Garage View Garage

Posted January 22, 2015 - 10:10 AM


The problem with lever feel is that there are two kinds of auto clutch users, one who let the clutch do all the work, the way it's intended to be used, and set up the clutch to do what they want, and those who set the clutch up only as an anti-stall device, keeping the engagement rate fast and the engagement point low, then trying to manage the clutch manually with the lever.  Doing the latter rarely works out to the satisfaction of the rider, mostly because it sets up a conflict between the rider and the clutch, with the rider doing one thing while the clutch tries to do something else.  It's more difficult to do with the ZSP because there's so little feedback in the lever, and because the perceived free play keeps moving around within the range of RPM that the clutch engages in.

 

I know one guy who makes manual overide of the Z-Start Pro work for him, but only one.



  • f150jokerstyle

    TT Bronze Member

346 posts
Location: California

Posted January 26, 2015 - 09:27 PM


The problem with lever feel is that there are two kinds of auto clutch users, one who let the clutch do all the work, the way it's intended to be used, and set up the clutch to do what they want, and those who set the clutch up only as an anti-stall device, keeping the engagement rate fast and the engagement point low, then trying to manage the clutch manually with the lever.  Doing the latter rarely works out to the satisfaction of the rider, mostly because it sets up a conflict between the rider and the clutch, with the rider doing one thing while the clutch tries to do something else.  It's more difficult to do with the ZSP because there's so little feedback in the lever, and because the perceived free play keeps moving around within the range of RPM that the clutch engages in.

 

I know one guy who makes manual overide of the Z-Start Pro work for him, but only one.

 

I'm not claiming to be a hero here or any thing but I fall into the second slot as well. I was seriously thinking of switching to a EXP over my ZSP but with a few hours of practice I have pretty much nailed it the majority of the time. I have gotten to the point where every time I ride I find my self using the clutch lever more and more. I have been struggling with inconsistency in rutted flat sand corners I.E like in deep desert canyons with water falls. This past weekend I was experimenting with pulling in the clutch to force it to freewheel as I began the turn and transited off the breaks near the apex, blasting the corner with higher rpms and I had more consistent results. I also manually modulate the clutch climbing nasty rocky hills and or ledges and have much better success in carrying momentum and control into the next section then I do if I let the ZSP do it all or me. As far as large sand dunes or hills with little run up I manually abuse the heck out of it as well or I flat out would not make it up a few I regularly ride. The reason I'm keeping it on the bike at this point is when I screw up 7 times out of 10 it keeps me moving forwards and that is my only concern in a race. Any thing that can save me 30 seconds 4-?? times a race really adds up. Also it has done a great job at keeping me from over heating my clutch and allows more fade before getting to the point you need to adjust the perch to continue on until it cools off. For the record my buddy rides an 08 with the exp 2.0 and I have an 09 with the ZSP we both run the recommended settings and we both feel this technique allows us to ride faster and more consistent over the terrain we like to ride and especially race on. That is my 2 cents on it for what its worth.



  • Matt C.

    TT Member

70 posts
Location: Alabama
Garage View Garage

Posted March 15, 2015 - 05:20 PM


Installed a Supersprox 13t front, TAG black 49t rear and new Regina ORN-6 chain on the 09 this morning then went riding with my brother. I like the Regina chain a lot. It's quiet and cleans easier than the worn out DID. The TAG rear sprocket is gorgeous and looks to be a quality piece. 

 

Next work with the bike will be valve adjustment and then an exhaust.

 

IMG_1504.JPG IMG_1502.JPG IMG_1500.JPG



  • n16ht5

    TT Addict

3,344 posts
Location: Washington

Posted March 17, 2015 - 11:02 AM


16653595340_cbde4bab65_h_d.jpg

 

FB_IMG_1426602900662.jpg



  • Wr822

    TT Member

62 posts
Location: Illinois

Posted March 17, 2015 - 01:08 PM


Just picked up a 09 YZ450 the other day, I'm in

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  • Unseenbryan

    TT Newbie

1 posts
Location: California

Posted March 19, 2015 - 11:22 PM


Just grabbed this picture at the track the other day. Thought it turned out pretty rad.
My 06 ImageUploadedByThumper Talk1426836116.733707.jpg

  • MotoRider25

    TT Member

47 posts
Location: Ontario
Garage View Garage

Posted March 20, 2015 - 05:08 PM


My 06!

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  • Ardho2

    TT Newbie

4 posts
Location: Nevada

Posted March 21, 2015 - 06:12 PM


ImageUploadedByThumper Talk1426990337.649171.jpg

  • 09yz450fpgd

    TT Newbie

11 posts
Location: Massachusetts

Posted March 30, 2015 - 02:50 AM


My 09 yz450f after winter rebuild
My 09 yz450f after winter rebuild

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  • n16ht5

    TT Addict

3,344 posts
Location: Washington

Posted March 30, 2015 - 01:05 PM


16974159935_13b995589b_h_d.jpg

 

16766412287_f1adba2131_h_d.jpg



  • BMcEL

    TT Member

39 posts
Location: Oregon
Garage View Garage

Posted April 02, 2015 - 05:33 PM


Nice. I would love a Timbersled for my '14. 

 

Here's my junk:

 

IMG_2066_zps685e824a.jpg



  • Matt C.

    TT Member

70 posts
Location: Alabama
Garage View Garage

Posted April 03, 2015 - 06:50 PM


Swapped out my 09 stock shorty exhaust for stock 07 exhaust with the smaller diameter header and longer muffler. I'm not crazy about the look but if it wakes up the low end, I'll be happy. Cost $70 and 15mins.

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  • BMcEL

    TT Member

39 posts
Location: Oregon
Garage View Garage

Posted April 05, 2015 - 10:39 AM


2015-04-04%2014.51.49_zpsvnuotjoq.jpg



  • BMcEL

    TT Member

39 posts
Location: Oregon
Garage View Garage

Posted April 06, 2015 - 07:44 AM


 

16766412287_f1adba2131_h_d.jpg

 

That's a KTM headlight, right? I've been thinking about replacing my DHH with something capable of a little more light output.

 

Off topic, but are you the same n16ht5 that had that awesome 4runner on 37s?



  • n16ht5

    TT Addict

3,344 posts
Location: Washington

Posted April 06, 2015 - 12:12 PM


Yeah it's a $37 ktm "style" off eBay. You must be on yotatech?

16850487305_ad4ed3f301_h_d.jpg



  • BMcEL

    TT Member

39 posts
Location: Oregon
Garage View Garage

Posted April 06, 2015 - 01:33 PM


Yes sir...small world. Haven't been over there much the last few years but I recognized the name. How do you like the light output on that headlight?







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