Author Topic: Anyone played with cut aways?  (Read 3313 times)

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Offline Wasp

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Anyone played with cut aways?
« on: April 01, 2017, 08:46:31 am »
Has anyone experimented with Mikuni slide Cutaways? I use 2.5 at the moment . What would 2.0 or 3.0 do ?
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Offline 80-85 husky

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Re: Anyone played with cut aways?
« Reply #1 on: April 01, 2017, 09:02:46 am »
saw a good Mr Mc Hanic trim a cutaway to clean up a mild richness that needle clip couldn't beat in a dx 200 once

Offline Slakewell

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Re: Anyone played with cut aways?
« Reply #2 on: April 01, 2017, 03:09:37 pm »
I normally slowly file away the slide on the bings I use till the bottom is crisp. 
Current bikes. KTM MC 250 77 Husky CR 360 77, Husky 82 420 Auto Bitsa XR 200 project. Dont need a pickle just need to ride my motorcickle

Offline Wasp

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Re: Anyone played with cut aways?
« Reply #3 on: April 01, 2017, 06:58:15 pm »
So making the cut away bigger leans it off?  I cant use the file , because all three need to be exactly the same . So I guess going to a number 3 from 2.5 will be the go ?
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Offline sleepy

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Re: Anyone played with cut aways?
« Reply #4 on: April 01, 2017, 07:01:22 pm »
Has anyone experimented with Mikuni slide Cutaways? I use 2.5 at the moment . What would 2.0 or 3.0 do ?

The cutaway effects the mixture up to about 1/4 throttle. The bigger the cut the leaner it is. It's all to do with the air flow across the top of the needle jet at low throttle openings, with a low cutaway the air is directed more at carb floor increasing the depression across the needle jet which gets fuel flowing earlier.

Offline Wasp

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Re: Anyone played with cut aways?
« Reply #5 on: April 02, 2017, 07:15:35 am »
Thanks , that makes sense .
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Offline supermotomc

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Re: Anyone played with cut aways?
« Reply #6 on: April 02, 2017, 02:43:40 pm »
Of course you can use a file take 0.5 off each use a caliper but make sure you bye a NEW file Fine! then  blue the cutaway measure with vernier caliper.. to double check slide upside down on plate back to back !!!

Offline Wasp

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Re: Anyone played with cut aways?
« Reply #7 on: April 02, 2017, 02:57:21 pm »
I just made a holding jig that is mounted to the mill table, tilted the head and zeroed it all in . Did  3 of them in no time   and it turned out good . Testing next and see what the difference is now . I will leave the set up on the mill , just in case I have to take off more .
VMX shocks , We don't just sell them - I design and produce them individually for you since 1989.