Royal Lux D770

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cheesewonton

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May 20, 2025
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I'm guessing a 100v machine won't mind 120v too much.
They are fine on 120 but out of an abundance of caution I normally use them on 100 volt transformers I have around the house for our assortment of Japan market vacuums. One of my D795s needed a new motor and main board. The originals were overheated charring the main board and melting a connection. Apparently a common enough problem that Lux had a kit with a new main board, motor and wires. The new motor, a powerhouse from Domel, says it is rated for 100-127 volts. 50-60 Hz. The cord has 115v/25A stamped on it so I run that one on regular 120 volt house current. I really love these old Luxes.
 
Congratulations! Is that a Japanese logo on the bag door? Is the power nozzle a model E3? I have a limited knowledge of the AB Electrolux power nozzles, but it seems that the E3 was produced for a long time and had different covers if not other variations. France PurificationLux lists a model E34, too, which was made from 1966 to 1992.
 
Congratulations! Is that a Japanese logo on the bag door? Is the power nozzle a model E3? I have a limited knowledge of the AB Electrolux power nozzles, but it seems that the E3 was produced for a long time and had different covers if not other variations. France PurificationLux lists a model E34, too, which was made from 1966 to 1992.
Not sure what that logo is. Normally I remove vac shop stickers but if it is something peculiarly Japanese I will probably leave it for the weirdness factor. My working D795 has a Japanese vacuum shop sticker on it that I will never remove.

The power nozzle is a Ze3. The graphics on the Ze3 and the white hoses are not correct for that model Lux but they are correct for my older D730 and my Viking V720 ( much nicer power nozzle than a noisy old Vibragoomer or the later and painfully loud Eureka Rugmaster / Rugmuncher thing some of the Viking branded ones came with ). That is half the reason I bought it ! I have a spare gray hose of the style the D770 would have come with and an extra dark gray Ze3 with the red Lux logo, also period correct for the D770. This was kind of a two-fer for me because it lets me complete two older Luxes I have.
 
I used to have one in that model style. I forget the model. I found it far too wide. It was masive! It just kept getting hooked on things when I was pulling it around. I also could not get bags for the beast. I am in middle school, so it was great for dragging my friends around on it. In NZ we don't see as many ze3's with their machines. Only about half the machines that could have a ze3 have a ze3. Cheesewonton, you should try a 300 series Electrolux. I love my 338 because it weighs about 2/3 the weight of the BIG one. It is also skinnier so therefore better for mobility. I wish I could get a Canadian dometic 345 with the ze3.
 
I used to have one in that model style. I forget the model. I found it far too wide. It was masive! It just kept getting hooked on things when I was pulling it around. I also could not get bags for the beast. I am in middle school, so it was great for dragging my friends around on it. In NZ we don't see as many ze3's with their machines. Only about half the machines that could have a ze3 have a ze3. Cheesewonton, you should try a 300 series Electrolux. I love my 338 because it weighs about 2/3 the weight of the BIG one. It is also skinnier so therefore better for mobility. I wish I could get a Canadian dometic 345 with the ze3.
Yep, the D748 - D795 series were some big hombres. I'm accustomed to big American style canister vacs so it doesn't seem excessively large to me. I like the bigger bag chamber compared to later Luxes.

I'm buying these from Japan as they turn up on a couple of on-line auction sites. They were never sold in the US except for the D720 and D739 ( I think ? ) sold here with Viking Husqvarna branding. I have a D730 and D745 from Japan. Those are narrower and appear to share the same steel main body as the 300s. I also have the Viking V720, our version of the D720 that needs to be cleaned up.

The big problem using these in the US is that the original two stage Swedish motors cannot be serviced if/when you wear them out. The fans are pressed on the motor shaft and can't be removed. There are no 100 - 120 volt motors sold with the six fins on the brush holder to keep the motor from spinning, and the spout the tension spring sits on. No problem with 240 volt machines, Domel sells a really nice replacement motor for old Luxes but nothing in 100 -120 volts. I have a friend who wants to start teaching me 3D printing and my first project is going to be a six fin adapter that can be screwed on the top of an Ametek motor using two screw holes cast into their normal brush holder. Fingers crossed!
 

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