MoreWellie
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As it looks to be 415v output then I guess most of the electronic stuff in his house@ that monies what have you got to loose ?

As it looks to be 415v output then I guess most of the electronic stuff in his house@ that monies what have you got to loose ?
If you want to run ovens and stuff - they take big power and you'll need a big genny.Ok, I am not well up on electrickery, the genny seems to be geared, looks like a chain drive under a cover, input could easily be 800 rpm to get 1500 at the genny shaft, has a 240v socket as well as the three phase, what do I want run off it, house, not that small a house! not so worried about workshop if only a short power cut but the power situation looks a bit sketchy this winter, especially if the pint size Napoleon finds some more toys to chuck out of his pram, I actually have three phase (for shed) house runs from one of the phases, I am not wanting a Chinese pos that dies before I need it, but would like to run the whole house including oven and hob, fridge, freezer, etc. etc. in case of day long power cuts, 10kva? ex hire Stephill? overkill? live in hope?
For the record, a lot of farmers have 6 spline PTOs on everything, regardless of what speed its supposed to be ran at![]()
This is an argument that has been had many many times on farming forumsI think the 6 spline shaft is likely to be twisted if 150+HP is run through it? The PTO output shaft is generally limited to the machine being powered?
This is an argument that has been had many many times on farming forums
The general consensus is (and i agree with them), that 21 splines don't handle torque any better than 6 splines - as the shaft diameter is practically the same.
The reality is, that 1000rpm almost halves the torque for the same power transmission, compared to 540rpm. And given that you can put 300hp through a 1000rpm 21 spline, you've got a lot of leeway on smaller tractors like ours to use 6 spline on everythingI think TBH we only have one true 1000rpm machine now, the power harrow, but we run it on a 110hp tractor.
I'd maybe have a rethink if we were running 200hp+ PTO equipment like Fraser, though!
@Fraserb 180hp genny, that's a big boy![]()
That's a BIG PTO Genny (That is working hard) if it's drawing about 200Hp. Probably over 100kva.We've only screwed one pto shaft on a tractor and that was a 21 spline one, our newest power Harrow came with a 6 spline shaft but runs at 1000 rpm
I can't remember the output of the genny, the smaller tractors can run it if we don't switch everything on, when it's on tbe 250hp tractor it usually sits at 80% engine load when there's a lot of things running.
It'd be interesting to see how the fuel cost per hour running that output compares between the tractor and a dedicated engine powered generatorWe've only screwed one pto shaft on a tractor and that was a 21 spline one, our newest power Harrow came with a 6 spline shaft but runs at 1000 rpm
I can't remember the output of the genny, the smaller tractors can run it if we don't switch everything on, when it's on tbe 250hp tractor it usually sits at 80% engine load when there's a lot of things running.
A nice easy rule of thumb for diesel genset fuel consumption is that every 40kva of load will require 10 Litres of fuel (or 4kva/L if you prefer).It'd be interesting to see how the fuel cost per hour running that output compares between the tractor and a dedicated engine powered generator
That's a BIG PTO Genny (That is working hard) if it's drawing about 200Hp. Probably over 100kva.
The biggest alternator frame size we can couple to the biggest, highest rated gearbox is about 110kva - so you're right at the top-end.
Once you get up at these power levels, and consider that you need to take perhaps a £200k tractor off the jobs it was bought for to run the genny - I tend to at least suggest to a Farmer that a dedicated Diesel Generator is worth considering, but the final choice is of course the clients![]()
It'd be interesting to see how the fuel cost per hour running that output compares between the tractor and a dedicated engine powered generator
Reminds me of my time in the foundry, we had 2 big standby diesel gensets to power a 30 ton electric holding furnace in case of a power outage, part of the weekly checks on a Saturday morning was to check the gensets and make sure they started automatically. One summer shutdown the local electric supplier wanted to do some work in our substation so we thought just start one of the gensets to keep the lights on and the offices running, do you think we could get it to start when we needed itOur genny is only for power cuts, sometimes will go over a year without being used in anger, we try to run it for an afternoon every so often though. Our worry with an engine driven one was engine issues on the day we actually need it, we've a few tractors that can drive it so of one goes down just swap over.