Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

Seems odd to me that Yamahas ys928j is built with  a  mz250e engine that produces only 251cc's?? Why make such an expensive machine that weights so much and include such a underpowered engine?

Everything at home depot and the big box stores sell machines at 1/4 the cost with almost twice the engine displacement...whats up with that??

Now the quality is top notch but as an owner of this snowblower I can't say that  im  not  a little concerned about its soon to be seen performance.

Jamie.

Thanks aa335 for the reply!! Seeing you asked i have to admit i have no snowblower experience as of yet and I was just curious because the numbers just seemed less than all of the other brands you see around the stores this time of year.I was always of the mind set that more power is good(my Tim the tool man flaw)...lol. Maybe the quality of the manufacturing and the efficient use of power is something Yamaha has figured out.I know the older Yamaha's were awesome so I guess Yamaha has proven themselves in the past so we will see how the newer ones fair. Maybe the hydro drive and electromagnetic clutch reduce the power needs of this machine and put more power where its needed more efficiently?? Thanks JAMIE

canman1976 wrote:
For me, I don't think hydrostatic drive is more efficient than friction disc drive.  If anything, I think hydro robs more power from the engine.  The electro magnetic clutch isn't more efficient than the belt clutch.  Hydrostatic and the electromagnetic clutch are convenience technology.  Hydro allows for easy infinite speed adjustment, and well suited for tracked snowblowers (CVT variable ratio pulleys versus geared transmission).   The clutch for dealing with occasional impact without needing conventional shear pins.  (think circuit breakers versus a fuse)

The efficiency comes from the details in the rotational friction, inertia, auger, impeller, impeller housing, and the discharge chute.  There's a little bit of black magic that is in the realm of Bernoulli's principle pertaining to pump design.  Water acts funny depends on the phase it is in. 

It's not underpowered Canman. It will do exactly what you need it to do. There are two differences between your Yamaha and the one's you noted in the box stores. 1). Your Yamaha will be reliable and easy to use. 2). Your Yamaha will be passed on and used by your grandchildren long after the box store brands are in the landfill.