flywheel weight to help with tall gearing( 08 yz450f)


7 replies to this topic
  • Jim813

Posted May 17, 2009 - 08:47 PM

#1

My question is:

I went from the stock 13/49 on my 2008 yz450f to 14/47 to help in the faster sections in the desert. But, in tight technical riding and slow hills the bike is geared too high and tends to stall. Will a heavier flywheel help in these situations even with the tall gearing?

  • grayracer513

Posted May 17, 2009 - 09:10 PM

#2

Yes, it will.

  • wondermuscle

Posted May 18, 2009 - 02:12 PM

#3

My question is:

I went from the stock 13/49 on my 2008 yz450f to 14/47 to help in the faster sections in the desert. But, in tight technical riding and slow hills the bike is geared too high and tends to stall. Will a heavier flywheel help in these situations even with the tall gearing?


I have the same bike and run 14/46 in the desert. I added a FWW and it helped a ton in the tighter stuff with desert gearing. Although there is nothing that will rid the bike of stalling completely it certainly helped. Here is a link to my review of the GYTR FFW.

http://www.thumperta...3607&highlight=

  • Jim813

Posted May 18, 2009 - 08:09 PM

#4

Thanks for the help! I read the review and everyone seems very happy with the GYT-R flywheel, looks like the one to buy.

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  • YamahaDude450F

Posted May 20, 2009 - 08:27 PM

#5

I have the same bike as well, I use mine mostly for tight woods and tracks though. Im running 13/52 gearing with the heaviest gytr flywheel and lots of carb work. The thing that helped the most for stalling was the flywheel. With my setup i can let the clutch out in first and it will pull itself without even giving any throttle so i am very content with it. The other thing i did that made a huge difference was i added a boysen powerwing and cut out the screen on the air filter cage, that really opened up the bottom end and reduced stalling. Good luck!

  • polarbear

Posted June 03, 2009 - 04:39 PM

#6

Hows that chain gaurd handling the 52 rear sprocket? Is it gonna last or eat its way through it???

I have the same bike as well, I use mine mostly for tight woods and tracks though. Im running 13/52 gearing with the heaviest gytr flywheel and lots of carb work. The thing that helped the most for stalling was the flywheel. With my setup i can let the clutch out in first and it will pull itself without even giving any throttle so i am very content with it. The other thing i did that made a huge difference was i added a boysen powerwing and cut out the screen on the air filter cage, that really opened up the bottom end and reduced stalling. Good luck!



  • YamahaDude450F

Posted June 03, 2009 - 09:06 PM

#7

So far so good, i got about ten hours with this setup and there is no noticeable wear on the chain guide. However i did have to use a dremel tool to open up the chain guide so it would fit new o ring chain. I will buy a WR chain guide when it comes time to replace it because they have the o ring chain stock and it is the same bracket so it should fit nicely.

  • wondermuscle

Posted June 04, 2009 - 06:20 AM

#8

You should also look into the TM Designs chain guide. They last longer than either of the OEM parts.

Did I hear you say you took a dremel to the chain guide???? The chain will wear its own groove into the guide on the first ride.





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