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450atvnut
Blaster class
Joined: 07 Jul 2006
Posts: 150
Location: Townsville QLD
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 Posted: Sat Jul 08, 2006 10:23 am Post subject: YFZ450 Thumb Fatigue :cry: |
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Does anybody out there know of anyway to reduce thumb fatigue? I ride a 04 YFZ 450. I've been riding for 3 mthns. I do MotoX, Scrub and Enduro 2-3 times a week and still no change.
Any advise will be much appreciated.
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bigjon
Moderator
Joined: 17 Feb 2006
Posts: 1279
Location: Dubbo
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| Posted: Sat Jul 08, 2006 12:23 pm Post subject: |
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I've got a twist throttle on mine.....Thumb gets very bored now 
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Don't close your eyes during the crash, you'll miss the best part |
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grub
50cc nipper
Joined: 19 Jun 2006
Posts: 42
Location: canberra
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| Posted: Sat Jul 08, 2006 2:58 pm Post subject: |
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i use the end of my thumb at the end of the throtle. we go out for 5 hours at a time. i dont seem to have a prob then.
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bike 1 justin 0 |
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PeteW
Moderator
Joined: 09 Feb 2006
Posts: 1877
Location: Doreen, Vic
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| Posted: Sat Jul 08, 2006 3:16 pm Post subject: |
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Twist throttle here too.
or try getting an 04/05 Honda thumb throttle. heaps lighter than the Yam and a better shape. You can also change the erturn spring in the carb for one out of an 04 CRF450 which is lighter than the one used in the Yam YFZ/YZ/WR carbs.
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www.dirtcomp.com.au |
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darkchild666
Big Bore, Stroked & Bling +
Joined: 21 Feb 2006
Posts: 347
Location: Burpengary qld
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| Posted: Sat Jul 08, 2006 7:49 pm Post subject: Re: YFZ450 Thumb Fatigue :cry: |
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I used to get alot of thumb fatigue on my banshee..
All i did was change the angle of the thumb throttle,
made a huge difference...
lez
_________________
Sold -06 ltr450
one industries sticker kit
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450atvnut
Blaster class
Joined: 07 Jul 2006
Posts: 150
Location: Townsville QLD
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| Posted: Sun Jul 09, 2006 2:36 pm Post subject: |
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Thanks heaps for the suggestions, I have tried changing the angle of the throttle but had no joy. Will try the return spring or throttle change. If no luck I guess I'll just have to change over to twist or take some harden up pills.
Thanks again for the advise.
Noddy |
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mick450
90cc 2 stroke / 110 4 stroke
Joined: 12 Feb 2006
Posts: 51
Location: wa
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| Posted: Sun Jul 09, 2006 3:40 pm Post subject: |
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get a honda trx450 throttle housing with a trx 90 lever
i tried the spring mod and it still hurt afterwards
also if you land heavy from a jump the throttle slide will jump and cause it to splutter because the spring tension is not enough to hold the slide down |
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Dazza450
50cc nipper
Joined: 12 Jun 2006
Posts: 5
Location: Kalgoorlie
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| Posted: Wed Jul 12, 2006 5:35 pm Post subject: |
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I had the same problem on my yfz, all i did was remove the spring in the thumb housing, made it a little lighter.  |
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ATV PRO
Roostin Away
Joined: 13 Feb 2006
Posts: 888
Location: Central Coast, NSW
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| Posted: Mon Jul 24, 2006 11:10 pm Post subject: |
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Honda 90 thumb throttle has a better leverage on a Yamaha,I tried it and it worked very well ! (used no spring in the thumb throttle assembly)
Cheers Len
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Cheers
Len
ATV PRO Pty Ltd |
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greenhuman
Roostin Away
Joined: 12 Feb 2006
Posts: 980
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| Posted: Mon Jul 24, 2006 11:26 pm Post subject: |
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| You lot should try riding a Banshee with twin 39PWK's. Riders who wanted a turn only lasted about 30 seconds. Hey Len, don't I even get a "sometimes" anymore? You don't have to be treated badly with me you know. I will look after you! |
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