Preditor top RPM setting? - Snowblower Forum : Snow Blower Forums
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post #1 of 81 Old 02-12-2018, 04:42 PM Thread Starter
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Preditor top RPM setting?

Just wondering what people are setting the high speed RPM to on their 212 Preditor repowers?
The manual has the idle at 1800 +/- 50 rpm.

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Ariens 926LE

Yard Machine 22" upgraded with 6.5 HP Predator
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post #2 of 81 Old 02-12-2018, 04:44 PM
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3600 should be the factory setting for WOT

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post #3 of 81 Old 02-12-2018, 04:54 PM
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3600 rpm is the factory setting but in my experience you can safely go 4200rpm without harming the engine
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post #4 of 81 Old 02-12-2018, 04:59 PM
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i plan to run mine (208cc) up to 3800 , but 4200 would be fun !!

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post #5 of 81 Old 02-12-2018, 05:20 PM
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post #6 of 81 Old 02-12-2018, 05:26 PM
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You guys are tempting me to set the governor on my Toro 521 w/ Predator 212cc a bit higher . . . maybe 3800 ???

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post #7 of 81 Old 02-12-2018, 05:31 PM
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About all I can add is that while the engine may be able to handle that speed, make certain the blower can . . . I would suck to have the blower come apart due to over revving . . .
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post #8 of 81 Old 02-12-2018, 05:39 PM
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I wouldn't try it on any mtd with that sad excuse for a gearbox they use but any half decent machine should be safe
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post #9 of 81 Old 02-12-2018, 05:50 PM
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You know that for every 500 RPM you add to the engine you only add 100 or so RPM to the auger.......and you are standing out of harms way if it launches anyway........
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post #10 of 81 Old 02-12-2018, 06:15 PM
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Given the cost of the engine, and that any difficult swapping work has been figured out already, it seems like a good candidate for pushing the RPMs a bit Nothing insane, but if 3800-4200 is OK, I'd say go for it, if you need/want the extra performance!

At least for my Ariens, the impeller runs at about 1/3 of the engine RPM. And the augers are about a 1:11 gear ratio from there. My engine is 3600 RPM, impeller is 1280, augers are 110.

Spinning your impeller faster will put more load on the impeller bearing, especially if the impeller is out-of-balance. If your auger gearbox uses oil, checking the oil level is never a bad idea, and increasing your RPM is a good opportunity to check it, or top it off.

If you really wanted to, you could up your engine RPM, but use a smaller pulley, to avoid "over-revving" your impeller/augers. You'd gain some more potential power from the engine, and would gain additional torque to the impeller/augers, due to the smaller pulley. But you wouldn't get longer throwing distances.

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