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YZSKY.. (Husky CR125/Yamaha YZ125 crossbreed) won't rev past 3/4 throttle

This is a discussion on YZSKY.. (Husky CR125/Yamaha YZ125 crossbreed) won't rev past 3/4 throttle within the 2-Stroke Motorcycles - Exotic forum, part of the 2-Stroke Motorcycle Forums category; Here's another vid taken on the same day (sorry they're a bit grainey, they were taken on a phone)... [Only ...

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  #41  
Old 11-09-2007, 05:40 PM
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Default Re: YZSKY.. (Husky CR125/Yamaha YZ125 crossbreed) won't rev past 3/4 throttle

Here's another vid taken on the same day (sorry they're a bit grainey, they were taken on a phone)...

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  #42  
Old 11-16-2007, 12:09 PM
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Default Re: YZSKY.. (Husky CR125/Yamaha YZ125 crossbreed) won't rev past 3/4 throttle

He got the plastics off Ebay by the way Roost, I'm sure he said they were UFO...?
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  #43  
Old 11-19-2007, 04:17 PM
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Default Re: YZSKY.. (Husky CR125/Yamaha YZ125 crossbreed) won't rev past 3/4 throttle

Cool.
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  #44  
Old 12-13-2007, 03:17 PM
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Default Re: YZSKY.. (Husky CR125/Yamaha YZ125 crossbreed) won't rev past 3/4 throttle

I had the exact same problem with my brand new '06. I switched to a non-resistor plug and the engine would shut off once it got on the pipe. Malcolm Smiths store in Riverside said go back the resistor because a non-resistor will cause it to just shut off. Haven't had a chance to test it since been raining for the past two weeks, but I'm confident that was it.
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  #45  
Old 12-13-2007, 03:36 PM
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Default Re: YZSKY.. (Husky CR125/Yamaha YZ125 crossbreed) won't rev past 3/4 throttle

tht thing looks wickedly fast
why dont you hit them huge cliffs in the background
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  #46  
Old 12-17-2007, 01:32 PM
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Default Re: YZSKY.. (Husky CR125/Yamaha YZ125 crossbreed) won't rev past 3/4 throttle

We've actually been up to he top of the 'bings' a few times, the hills facing you in the video are at almost a 45 degree angle . The only bike I've ever seen making it to the top in one shot was a 4 stroke 450.. and even then he only just made it.

Got both the YZSKI and the RM stripped down for engine rebuilds at present. YZSKI's getting a brand new OEM cylinder and ProX race piston (already got the piston and with luck the cylinder should arrive any day now).

The RM needs a little more work though. I've just finished installing a brand new OEM cylinder and race piston but have decided to tear it down again and replace the crank, conrod, main bearings and seals though because the top end of the conrod's fairly worn and I don't trust it with the extra power delivered by that new top end.

Took some vids of the RM being run in... what a difference! They're on my mate's phone right now, will post once he gets them on youtube.
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  #47  
Old 12-17-2007, 01:43 PM
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Default Re: YZSKY.. (Husky CR125/Yamaha YZ125 crossbreed) won't rev past 3/4 throttle

Humyam, not sure what the resistance is actually for. Do you know?
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  #48  
Old 12-17-2007, 01:49 PM
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Default Re: YZSKY.. (Husky CR125/Yamaha YZ125 crossbreed) won't rev past 3/4 throttle

No I don't know what a resistor plug does or does not do. All I was told is the non-resistor spark plug will adversely affect the CDI box up to the point of shutting off the engine at higher RPM's and that is what mine was doing.
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  #49  
Old 12-19-2007, 04:32 PM
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Default Re: YZSKY.. (Husky CR125/Yamaha YZ125 crossbreed) won't rev past 3/4 throttle

i was told that the resistor in them is so that they dnt interfere with ariels on houses etc but that may be rubbish. nice bike man that thing looks sweet good work now get some haggis in ya!! lol
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  #50  
Old 12-19-2007, 05:42 PM
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Default Re: YZSKY.. (Husky CR125/Yamaha YZ125 crossbreed) won't rev past 3/4 throttle

Haggis is great by the way, don't knock till you've tried it!

Here's a picture of the RM conrod after I tore out the crank, looks like I got to it just in time...



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  #51  
Old 12-27-2007, 12:42 PM
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Default Re: YZSKY.. (Husky CR125/Yamaha YZ125 crossbreed) won't rev past 3/4 throttle

yeh i no i have tried it my friends are scottish nd they made it for us when we were round for tea wasnt knockin it mate!!
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