07-02-2024, 11:01 AM | #1 |
Join Date: Feb 2021
Posts: 1,000
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A video of the Hawk that I now have a stock motor on
It runs good, and makes the expected power, but it will kinda pop between gear changes sometimes, especially on light -medium acceleration. There is a spot on this video between 14.10, and 14.30 or so that shows what I mean. I have a Nibbi pod filter, aftermarket exhaust. It has a VM26 with 110 main, and 25 pilot ( I had accidentally said125 pilot). Do you think it's because of my mixture?, or the needle? Thanks
Last edited by Bill Hilly; 07-03-2024 at 09:13 AM. Reason: Realize I made a mistake on pilot size |
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07-03-2024, 08:17 AM | #2 |
Join Date: Jun 2023
Location: Big Piney, WY
Posts: 597
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What is the VM26? Mikuni? You say you have a 110 main and a 125 pilot. Are you sure on that pilot number? Where is your needle position and how many turns out on the air/fuel mixture screw?
My laymen's guess is it has something to do with the idle circuit assuming you are returning the throttle to idle between shifts.
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2023 Hawk 250 from XPRO off of Amazon MOUNTAIN MAN RC + MOTO on YouTube "If there were more bloody noses, there would be less wars." - Hagbard Celine "Someday, after mastering the waves, the winds, the tides and gravity, we shall harness for God the energies of love and then, for the second time in the history of the world, man will have discovered fire." - Pierre Teilhard de Chardin |
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07-03-2024, 09:06 AM | #3 | |
Join Date: Feb 2021
Posts: 1,000
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This carb has a very blunt needle, and I wonder is that may have something to do with it. I just realized that I put 125 pilot, but I meant 25. LOL |
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07-04-2024, 07:03 AM | #4 |
Join Date: Jun 2023
Location: Big Piney, WY
Posts: 597
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I found the same thing with the Nibbi, pretty blunt needle. I tried to change to different positions with the clip and couldn't really tell a difference. When I changed to the Keihin style JJH needle, I got positive feedback on my idle, causing me to drop from 40 pilot back to 38. Do you know if the Keihin style needle will fit in your carb?
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2023 Hawk 250 from XPRO off of Amazon MOUNTAIN MAN RC + MOTO on YouTube "If there were more bloody noses, there would be less wars." - Hagbard Celine "Someday, after mastering the waves, the winds, the tides and gravity, we shall harness for God the energies of love and then, for the second time in the history of the world, man will have discovered fire." - Pierre Teilhard de Chardin |
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07-04-2024, 09:38 AM | #5 | |
Join Date: Feb 2021
Posts: 1,000
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