Hoover new wave motors, could they make a higher drum speed than 1600rpm?

[servis-dream]

i know the new wave WA1600 is the fastest machine of the new wave range, but is it somehow possible for the machine to spin any faster, would it cause irreversible motor damage, or would it last?

i don't own one, but im wondering if they could get the machine to 1650rpm or more for any amount of time at all

i saw a video of the WA1600 in action at its incredible speed of 1600rpm and wondered "can it go much faster, if so, how much?"
thanks
Matthew

 

[combo52]

Maxium Spin Speeds

We easily have the capability to make washers spin at over 4000 RPMs with no durability problems,

 

problem is there is only so much water you can spin out of clothing, and you have the problem of wrinkled clothing.

 

In reality the extra water extraction after around 1000 RPMs is very little and with the very powerful and fast dryers we have in the US there is little likelihood that much over 1,200 RPMs will not be seen in the US at least.

 

John L.

 

[servis-dream]

at long last, an update to this

in a rather incredible twist (and some calculations) i found out the New Wave motors are capped off at 21,000rpm with a maximum possible speed of 32,000rpm (at this speed they self destruct but technically it's a one shot run)

 

the calculations are mainly based on the theory the WA1600 hits the maximum capped speed of the motor

 

if a WA1600 hits a motor speed of 21,000rpm, this gives it an additional 11,000rpm of speed before the motor is destroyed

 

the theoretical maximum speed of the drum has been calculated at 2,440rpm

 

technically Hoover could have likely built a 2,000rpm New Wave, but they likely decided not to due to a few reasons

 

1. their drum spiders are made of aluminium and are riveted to the inner drum, at higher speeds they could tear

 

2. the drum itself may come apart at 2,000

 

3. the motor may not be able to survive the strain while spinning a full load at 2,000

 

4. the machine's general build quality may not be able to allow the speeds that are theoretically possible

 

5. the motor's brushes would likely wear out at a significant rate, causing Hoover more service calls if they actually made the thing

 

6. the noise generated from a New Wave spinning is already significant, at 2,000rpm it would be extremely loud (though i don't think many people would mind it much considering a Hotpoint of the same era)

 

7. the motor control boards may need to supply additional voltage that they would require re designing for, this would obviously cost the customer more money if it were to fail (especially at speed)

 

although all of that may be a true factor in the reasons why this was never fully developed, i know they destructively tested their machines to 1,900rpm in a controlled environment

 

then again, if anyone is going to do it, i hope your build goes well and i wish you the best (don't blow too many relays) 

 

[maytag85]

Faster spin speeds may extract more water but as John mentioned, it’ll result in more wrinkling. Possibly may put more wear and tear on the bearings as well.

I’ve noticed if I spin things out at a slower speed, things seem to feel more soft and fluffy on top of being less wrinkled. There’s a fine balance between extracting as much water out but at the same time, don’t want to spin too much water out or else it’ll result in more wrinkling.

 

[launderess]

Many owners manuals for European washing machines and or dryers have charts giving residual moisture content per final extraction speed/rpms.

Biggest bang (for cottons and linens) comes going from 800/900 rmps to 1100/1200. Next up would be 1400 or so rpms. After that speeds of say 1600 to 1800 rpms result in very small gained percentages of water extracted. Usually something between less than one percent to maybe slightly above. Either way it's not going to make a huge difference in energy costs for tumble drying I should think.

OTOH depending upon build quality constantly using high speed spins (say 1600 to 1800 rpms) can take a toll on washing machine parts. More so if loads are heavy and or not properly balanced.

For a time washing machines on European market waged a final spin speed war, each trying to out do other with fastest final speed. My AEG from said period has final speed of 1800 rpms. It didn't last however, far as one can see most washing machines have come down to more sensible final spin speeds of 1400 or so range.

This all being said there is quite a range of opinions on matter. *LOL*

It's worth noting many older front loaders that had max spin speeds of say 800/900 or even 1100/1200 keep chugging along and can (or could) last for ages.

https://www.whitegoodshelp.co.uk/washing-machine-spin-speeds/

https://www.washerhelp.co.uk/forums/topic/156-are-washing-machine-spin-speeds-a-con/

It also helps for households to consider their wash day habits.

People that mix loads of different items say heavy bath towels with lighter garments such as vests and such might want fastest spin speed to extract most water out of former. However subjecting other things to prolonged high extraction can cause wrinkles and perhaps damage.

 

[maytag85]

“It’s worth noting many older front loaders that had max spin speeds of say 800/900 or even 1100/1200 keep chugging and can (or could) last for ages”

That’s pretty much true for any mechanical you can think of. Build it with the intention of spinning at a couple thousand RPM but throttling it to only spin at 800 to 900 rpm maybe even less say 500 to 600 rpm, it’ll last a long, long time. Same applies with car engines, build a engine to produce 400 to 500 hp but throttle it down to 200 to 300 hp with lots of torque, de-tune it and govern it to only rev no further than 3,000 rpm, it’ll last a long, long time since it’s not having to work all that hard which puts less strain on the mechanical parts.

 

[ozzie908]

2000rpm spin washer

Having had 3 Gorenje washing machines with 2000 rpms spin speed for cottons I can testify the difference between 1400 and 1600 machines isn't worth talking about. I got one because I was interested in how much quicker the dryer would be but it made hardly any difference. I also had a Miele with an 1800 spin it was not much benefit so I went back to a 1600 and I often drop the final spin to 1200 or 1400 to save on creases more than anything else.

 

[spinspeed]

size and G forge

Interesting thread. I also understand that the size of the spinning basket will make a difference with water extraction. Something to do with G force. There is a calculation I believe. The bigger the basket the more G force = more water extraction.

My F&P TL has a big basket and max spin is 1000 rpm. My LG FL has max spin of 1400 rpm but I would say the basket is smaller or has a smaller circumference. I don’t think one spins any better than the other. I also have a small standalone spinner that spins at over 2000 rpm. When I do give a load an extra spin, for example towels before going in to the dryer, very little extra water comes out. Perhaps 1/4 of a cup if that. The spinner has a pretty small spin can.

As for creasing at high spin speeds, I machine dry everything except sheets and the dryer does a great job removing the creases as long as it is unloaded as soon as it has finished. I don’t iron many items. If I do line dry then everything needs ironing due to creases

 

[ragnboneman]

what sort of motor is in it?

hard too adapt for anything but scabbed in manual function but these KBIC 240 drives can maker a motor scream ( provided its DC )

KBIC-240 (9428), SCR DC Drives, 230 Vac Input, 0-180 Vdc Output, thru 1 HP, Open Chassis

kb-controls.com

 

[launderess]

Very little on this site we've not discussed previously.

https://www.automaticwasher.org/cgi-bin/TD/TD-VIEWTHREAD.cgi?11492

https://www.automaticwasher.org/cgi-bin/TD/TD-VIEWTHREAD.cgi?21504

https://www.automaticwasher.org/cgi-bin/TD/TD-VIEWTHREAD.cgi?21504

For industrial/commercial side there is more and more push towards soft mount washers (with various suspension systems) over hard.

One prime reason is former usually are capable of higher final extraction in terms of G Force. Greater extraction means less residual moisture to be baked out in dryers. It also means less or no bother with pre-conditioning linens and other things in driers before they go to ironers.



[this post was last edited: 7/5/2024-21:23]