PTO Generator Question

[Industrial Toys]

SHOCKED to see that Multiquip runs Kubotas out at 3600 rpm on their whisperwatt generators! How could any reputible company do such a thing?

 

[LouNY]

SHOCKED to see that Multiquip runs Kubotas out at 3600 rpm on their whisperwatt generators! How could any reputible company do such a thing?

$$$$$$$$$$$$$

 

[John_Mc]

SHOCKED to see that Multiquip runs Kubotas out at 3600 rpm on their whisperwatt generators! How could any reputible company do such a thing?

I'm assuming that's a gas or propane-fired generator, not a diesel? If so, it's very common. It allows them to use a smaller displacement gas engine and a less expensive 2-pole generator head. Running at 1800 RPM typically means a comparatively larger displacement engine for the same power output and a more expensive 4-pole generator head.

 

[Industrial Toys]

No, it's your typical air cooled, 2 cylinder ubiquous Kubota DIESEL , to make 7000 watts, 6000 continuous. They also wind the 3 cylinder Kubota Diesel Engine in my Steiner out pretty good!

 

[RickB]

No, it's your typical air cooled, 2 cylinder ubiquous Kubota DIESEL , to make 7000 watts, 6000 continuous. They also wind the 3 cylinder Kubota Diesel Engine in my Steiner out pretty good!

Water cooled. 3600 ERPM isn’t a concern if the engine is designed for it. I’d prefer a Kubota Diesel running at 3600 to a Chinese Generac air cooled propane or gas engine running the same speed.
Now if you want to have a discussion about noise, that may be a different conversation.

 

[grsthegreat]

Water cooled. 3600 ERPM isn’t a concern if the engine is designed for it. I’d prefer a Kubota Diesel running at 3600 to a Chinese Generac air cooled propane or gas engine running the same speed.
Now if you want to have a discussion about noise, that may be a different conversation.

Generac is usa made. Not chinese. I have seen those units with many , many hours running at 3,600 rpm.

 

[RickB]

Generac is usa made. Not chinese. I have seen those units with many , many hours running at 3,600 rpm.

Maybe now, not always.

Edit. Their own website says Generac OHV engines are not designed or built in the USA.

 

[grsthegreat]

Maybe now, not always.

Edit. Their own website says Generac OHV engines are not designed or built in the USA.

on some liquid cooled units they use Isuzu and Mitsubishi engines. They build all their air cooled HOME STANDBY unit ENGINES. Ive seen the factory. The generac OHV engine is the unit in some of their portable generators. That’s made overseas.

 

[Industrial Toys]

I think the Whisperwatt is only quiet on account of the enclosure, and that's it's water cooled. Maybe it got it's name when trying to whisper near it and the other person just keeps saying "What?" On Line Auction already higher than I would spend. Thank God!

 

[vsteel]

3600 RPM generators can run a very long time assuming it is rated to do it. The issue is when people try and buy the very cheapest no name generator they can find and then are surprised when it melts down after 5 hours of continuous use.

Sizing a generator I wouldn't worry about PF if you are trying to run a normal house. PF comes more into play with more industrial loads even then I would look at LRA or Locked Rotor Amps. LRA is the startup current when an electric motor is first started.