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YS FZ-175s Tuning

Old 07-16-2018, 12:33 PM
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Default YS FZ-175s Tuning

I recently acquired a YS FZ 175s. It's the newer regulator design that doesn't have the adjustment. I'm curious if anyone has used this model much and what the best tuning methods would be. My FZ 80 is the exact same, and they run very similar.

I'm very familiar with the older FZ's and regulator adjustments and get those engines running great. I feel like I'm missing something with this new design. It runs good, but seems to load up in the lower/mid-range.

Anyone running one of these?
Old 07-17-2018, 12:55 PM
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Sounds like the low end needle is lean. Try richening the low needle (turning it clockwise) 1/8th turn and see if it helps. High speed needle will need to be adjusted, as they have an impact on each other.
Im guessing that the fixed regulator is to stop people fiddling.



Last edited by Union Models; 07-17-2018 at 12:58 PM.
Old 08-28-2018, 10:07 AM
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Is it hot where your at? Sometimes running to low of nitro in hot weather will cause the engine to sound like it loading up at half and below throttle.

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