American, British, French or German? We want to know about it.
User avatar
operator bell
Posts: 562
Joined: Thu Dec 06, 2007 7:30 am
Location: Las Vegas, Nevada
Contact:

Postby operator bell » Wed Dec 12, 2007 7:57 pm

After tracking down the original auction pictures, I see it has two Post Office uniselectors and some PO-3000 relays. These normally all run at a standard 50VDC, so logically (since I see no reservoir capacitor) the transformer should be putting around 50V on the rectifier.

The lamps will not be anywhere near 50V. I would put money on it that they're standard 6.3V, in which case the transformer is probably not CENTER tapped, but tapped 0 - 6 - 50 (or 6 - 0 - 50). This was common for pinball and other amusement machines of the period that used 50V AC for motors and solenoids and 6V AC for the lamps.

I think you will find the relays and solenoids are driven off the two wires at the top of the rectifier, and the lamps are driven off the transformer tap and that extra blue wire I see on the bottom right of the rectifier.
Image

stoxman22
Posts: 61
Joined: Tue Dec 06, 2005 10:18 am
Location: Cheshire

Postby stoxman22 » Thu Dec 13, 2007 9:41 am

Thanks for that info. I didn't realise that the machine had uniselectors. I had heard of them but not seen one. Do they click round with a trigger from another relay or do they rotate when a supply is applied? I have not seen one of these machines working so half the battle is to work out what is supposed to happen then you have a chance of fixing it......!! I can see me spending a few hours drawing the circuit out...yuk.

Stoxman

User avatar
operator bell
Posts: 562
Joined: Thu Dec 06, 2007 7:30 am
Location: Las Vegas, Nevada
Contact:

Postby operator bell » Thu Dec 13, 2007 5:36 pm

You can see by looking at them, but I'll describe them for everyone else. There's a semicircular bank of several rows of 25 contacts, with a shaft up the middle carrying contact wipers for each level and a ratchet to turn the shaft. There's a magnet coil on the side frame, left in the picture, with a rocking armature attached to a claw and various springs. The claw rests on the ratchet in the middle. When you apply power to the magnet, the armature pulls in against a powerful spring and the claw clicks over one tooth of the ratchet. When you take power off again, the spring pulls the claw back and turns the ratchet, turning the contact wipers which move to the next contact around on each row.

Resting on the armature is a closed contact. When the armature pulls in, it opens this contact. So if you connect 50V to the coil through the contact, the armature pulls in and breaks the contact, then drops out again because it no longer has power, which closes the contact; and the whole thing repeats, driving the wipers round at about 20 steps a second. In the telephone exchange every subscriber line would have one of these selectors, and when you picked up your phone, your selector would go into this mode and run round its contacts looking for a free exchange line. In the Rotalite, each selector will free run for some random period, probably each controlled by one of the relays. If you poke around in there, press the little rocker at the free end of the relay to close it. 50V won't hurt you. Warning: when the uniselectors run they are VERY LOUD, especially mounted on a wooden board like that. It does no harm but it's startling when it's unexpected, and you can hurt yourself when you jump back in surprise.

The circuit should be very easy to trace. There will be three parts. First, the controls, taking in the relays, selectors and coin parts. Second, the combination logic, consisting of wires running between one row of each selector. Third, the lamp wiring, coming off another row on each selector. The lamp wiring will be entirely separate from the rest, with no connection except through the big blue rectifier.

stoxman22
Posts: 61
Joined: Tue Dec 06, 2005 10:18 am
Location: Cheshire

Postby stoxman22 » Sat Dec 15, 2007 7:12 pm

I am trying to get this Rotolite working. Same internals as the two other machines you show.
PICT3640.JPG

stoxman22
Posts: 61
Joined: Tue Dec 06, 2005 10:18 am
Location: Cheshire

Postby stoxman22 » Tue Dec 18, 2007 2:33 pm

Right I am getting desperate..... The transformer has burnt out there are wires off and some different coloured wires taped together, now I find the coil of one of the uni-selectors is burnt out also. I NEED a schematic and can anyone tell me where to get a uni-selector.

Slotalot's Roto Pool Wiring Diagram now in Resources - Site Admin.
PICT3646.JPG

User avatar
operator bell
Posts: 562
Joined: Thu Dec 06, 2007 7:30 am
Location: Las Vegas, Nevada
Contact:

Postby operator bell » Tue Dec 18, 2007 4:59 pm

It is possible to rewind the uniselector coil yourself by hand. Rather a tedious job, but I've done it when necessary, and it's probably easier than finding a new unit these days.

bits n bats
Posts: 1
Joined: Sun Mar 23, 2008 10:20 pm

Re: Rotolite help

Postby bits n bats » Sun Mar 23, 2008 10:43 pm

I have a Rotolite machine, I have not plugged it in for over 2 years but it was working last time I tried it. I can see you live in Cheshire, I live in Dukinfield near Ashton Under Lyne /Hyde. If it will help you, I am off work this week until march 30th 2008. I will bring it to you. I can not help in any other way as I don’t understand the working of it.
Ps. I don’t want to sell it.
ed.

Rotomole
Posts: 4
Joined: Sun Apr 06, 2008 4:21 pm
Location: Staffordshire Moorlands

What's missing from this picture?

Postby Rotomole » Mon Apr 07, 2008 10:40 am

Hello Everyone,

This is the inside of my (sadly not working) Rotofruit.
If you're familiar with this type of machine - I believe the Electrodart, Rotolite and Bingola may be similar - then you will notice it's the area inside the main cabinet just above the entry to the cash box.

Please can any one tell me what should be where the three screws are? there are also 3 unconnected wires heading in that direction. Has anyone any idea what's missing? And if what's missing is original or a later addition?

Also any information at all on the operation or component details of any of the above machines would be greatly appreciated. Especially welcome are offers to sell me wiring diagrams :eek: - whether drawn up by you, a friend or copied from the original rocking-horse manure itself.

Slotalot's Roto Pool Wiring Diagram now in Resources - Site Admin.

Can anyone confirm how the Rotofruit worked visually? I am guessing from my machine that three adjacent lamps were lit at once - they then travelled around the playfield and stopped together showing three lighted symbols: in other words there was one cycle of three lit lamps and not three cycles of one lit lamp. Can anyone confirm this please as I have never seen one working.

Many thanks,
Becky.
DSC00324aaa.jpg

User avatar
operator bell
Posts: 562
Joined: Thu Dec 06, 2007 7:30 am
Location: Las Vegas, Nevada
Contact:

Re: What's missing from this picture?

Postby operator bell » Wed Apr 09, 2008 7:09 am

Hi Becky, since nobody else replied to you yet I suppose I may as well, though I don't have the info you need. There have been other Rotofruit inquiries here in the past eg this one which you have presumably already read, since I expect you arrived here after a google search. Regrettably, nobody posted a full picture of the insides from which we could identify your missing part. Perhaps if one of the other Rotofruit/Electrodart owners reads this they might take the hint. None of the other owners seems to have found a diagram yet. It's a pity I live so far away, as if I could get my hands on one for a few hours I'd be happy to trace it out. I've reverse-engineered much more complicated games than this. :frankie:

Rotomole
Posts: 4
Joined: Sun Apr 06, 2008 4:21 pm
Location: Staffordshire Moorlands

Re: What's missing from this picture?

Postby Rotomole » Wed Apr 09, 2008 11:57 am

Hello, Thanks for the reply.

I thought the wiring diagram was a long shot and that I would end up putting the work in myself - oh well can't blame me for looking for short-cuts.

Still keeping my fingers crossed that someone will let me know if they have any ideas what’s missing.

Have perused these pages for quite a long time before I finally plucked up the courage to speak up - and my dad is a magazine subscriber (and was of a previous incarnation - that's a previous mag not a previous dad) but you are right - as I don't speak German Google-ing 'rotofruit' only leads me here (and what a great place to be).

Thanks again Becky.


Who is online

Users browsing this forum: No registered users and 1 guest