What is maximum RPM? - Snowblower Forum : Snow Blower Forums
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post #1 of 26 Old 04-04-2014, 04:48 AM Thread Starter
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What is maximum RPM?

I have a 2013 Platinum 30 with an American made Briggs and Stratton 342 cc engine What is the safe maximum rpm for this engine? Thanks.

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post #2 of 26 Old 04-04-2014, 10:11 AM
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3600 rpm.

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post #3 of 26 Old 04-04-2014, 10:18 AM
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For the sake of redundancy, 3,600 RPM's is standard for pretty much all snowblower, lawn mower, pressure washers, tillers, etc... (Air cooled 4 strokes).

Most people are going to do whatever they want. What I find entertaining is how people justify what they do.
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post #4 of 26 Old 04-04-2014, 02:05 PM
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I turned my 342cc Briggs on my old blower to 3,740ish per the R&D guy I know at Briggs.

My current 420cc Briggs on my Pro 32 is turning the same, as he said they turn 3,800rpms with those in generator applications.

- 2013 Ariens Pro 32 (926039)
- 2014 Ariens Path-Pro (938031)
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post #5 of 26 Old 04-04-2014, 04:39 PM
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Quote:
Originally Posted by JRHAWK9 View Post
I turned my 342cc Briggs on my old blower to 3,740ish per the R&D guy I know at Briggs.

My current 420cc Briggs on my Pro 32 is turning the same, as he said they turn 3,800rpms with those in generator applications.

Are you sure that he issn't say 3600 for power generation applications ? That is, pretty much, the industry standard.
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post #6 of 26 Old 04-04-2014, 05:49 PM
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3600 rpm + or - 50 rpm is what i thought!
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post #7 of 26 Old 04-04-2014, 06:02 PM
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3600 is what i would recommend, but you could probably safely go up to 3850, dont blame us if you blow your motor though.
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post #8 of 26 Old 04-05-2014, 03:19 PM
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I ran my go-devil mud motor with a 35hp B & S engine at 4100 RPM all the time.

I guarantee you if B & S recommends 3600, It will not blow up at 3650 or 3700 or even 4000. the valves will start to float up over 4200 RPM.

I used to race go-carts and would run that up over 5400 RPM (5hp B&S), granted that wasn't stock but these little engines will hold together just fine
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post #9 of 26 Old 04-07-2014, 01:35 AM
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Quote:
Originally Posted by scipper77 View Post
For the sake of redundancy, 3,600 RPM's is standard for pretty much all snowblower, lawn mower, pressure washers, tillers, etc... (Air cooled 4 strokes).
For the sake of safety, most lawnmower engines can run at 3600 RPM, but are set to 3200 RPM because that is what "they" have deemed the max safe rpm for non commercial spinning lawnmower blades.

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post #10 of 26 Old 04-07-2014, 08:23 AM
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Quote:
Originally Posted by Shryp View Post
For the sake of safety, most lawnmower engines can run at 3600 RPM, but are set to 3200 RPM because that is what "they" have deemed the max safe rpm for non commercial spinning lawnmower blades.
Is this true for both riders and push mowers? My only experience with push mowers is doing carb work but I am pretty sure my rider is set for 3,600. The 3,200 number is new to me however.

I can understand why push mowers would tone it down with the blade being directly driven.

Most people are going to do whatever they want. What I find entertaining is how people justify what they do.
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