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Is tourque more relevent than CC's ???
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Posted by
jessekeil Vermont (
My Page) on
Fri, Jun 4, 10 at 13:23
| Hi, I'm new here so I hope you'll forgive me if this question has already been answered, but....I've been looking at walk behind mowers, as I need to find the most powerful one I can as it will be a "farm" mower, dealing with weeds, too tall grass, and random debris, besides a decent size regular lawn. As a long time biker I thought CC's were what determined power, but I see all these 190cc mowers with highly varied torque ratings ? 6.75, 8.75, etc. Are they rating at different RMP's to get these torque numbers ? Is there really a big power difference between 190cc engines ? Is an 8.75 the best out there in a typical 22" walk behind ?
Thanks !!!
Jesse |
Follow-Up Postings:
RE: Is tourque more relevent than CC's ???
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| Most mower engines today are 190cc to 195cc so it really doesn't matter. Where did you see 8.75? Looks like a typo. The most important consideration is durability, particularly in an application like yours where you most likely will be hitting things and damaging the engine. |
RE: Is tourque more relevent than CC's ???
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| I think the 8.75 is a torque measurement while 6.5 and 6.75 is hp.. The c.c number is simply the cylinder displacement and is only in a very rough sense correlated with the power of the engine. To be perfectly honest you should ignore the engine specs when choosing a mower. Engine specs will tell you very little about how well the mower will do it's job of turning long blades of grass into short ones. You can fall into the trap of seeing a honda engined mower with big numbers at Wal Mart or Target for an unbelievable price. The mower will be mediocre at best. Far more important are features like deck design, well construction, proper controls, etc. In my experience if you focus on mowers from the big makers (Toro, Honda, Snapper, etc) you can safely assume the engine and components are correctly designed and matched to the machine. Just focus on a mower within your budget that has the controls that fit you the best. |
RE: Is tourque more relevent than CC's ???
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| 'The c.c number is simply the cylinder displacement and is only in a very rough sense correlated with the power of the engine.' In the technical sense, that's exactly right. But this is not a scientific exercise. Practically every mower you find today is 180cc to 195cc, and because of competition they are all in a similar area with HP and torque. From a Tecumseh LEV195 to a Honda GSV190, two very different engines, there's not a dime's worth of difference in work accomplished. Owning both those engines myself, I use the two mowers interchangably with no differences, except that the governor on the Tecumseh is more sensitive and it doesn't 'dip' as much when hitting a load. I like the Honda more because it's quieter but that's about it. Assuming 180 to 195cc, any mower sold today is going to be in that same ball park. |
RE: Is tourque more relevent than CC's ???
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| It's a practical difference. Cubic displacment by itself tells the prospective purchaser nothing, I repeat nothing about how well the lawn mower will do it's job. Horsepower and torque numbers are close behind. And yet prospective lawn mower purchasers continue to focus on engine statistics and valve placement as though that information determines how well a mowing machine will cut, mulch and bag grass. To the exclusion of information thatcould be truly useful. |
RE: Is tourque more relevent than CC's ???
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| Thanks for all the advice and perspective ! I hadn't checked back since this site was supposed to email me if there were responses, but never did ?? The 8.75 torque was on a 190cc Husqvarna at Lowes. Sounds like engine isn't everything. Now I'm thinking deck depth may be important when mulching a high volume of material, or the amount of space above the blade. My Poulan has a 190cc Honda engine yet too easily chokes on it's mulchings, perhaps because of it's very shallow deck ? Some look to have a much deeper deck and space above the blade to process mulch. Does this make sense ? Thanks, Jesse |
RE: Is tourque more relevent than CC's ???
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| Sounds like you may need a trimmer mower instead of a bladed one, or maybe both. |
RE: Is tourque more relevent than CC's ???
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| Actually I DO have a push string trimmer, I just never is it since it's not self propelled like the regular mower. The extra effort really adds up over time. Last time I checked DR and Bearcat both made self propelled wheeled string trimmers, but they're over $1000, alas. Maybe some day. |
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