Logitech MOMO Racing FF Wheel: Power supply??

Hi, Just got a Logitech MOMO Racing Force Feedback wheel from an air hostess friend who brought it back from the states to good ol' South Africa. (For less than half the price that they flog them here!!!!) Anyway, I need to get an appropriate transformer. I can see that it puts out 24V and 750 mA, but it doesnt say if its AC or DC. All it has is a little symbol next to these values: a solid line over three dashes, lying horizontally. All the other transformers I have put out AC. I have a transformer for a USR modem which puts out only 20V and 750 mA AC. Will this be OK? Dont want to risk anything, returning could be a problem! Many thanks, -Simon H

"Simon H" <[email hidden]> wrote in message news:[email hidden]... > Hi, > > Just got a Logitech MOMO Racing Force Feedback wheel from an air hostess > friend who brought it back from the states to good ol' South Africa. (For > less than half the price that they flog them here!!!!) Anyway, I need toget > an appropriate transformer. I can see that it puts out 24V and 750 mA, but > it doesnt say if its AC or DC. All it has is a little symbol next to these > values: a solid line over three dashes, lying horizontally. All the other > transformers I have put out AC. > > I have a transformer for a USR modem which puts out only 20V and 750 mAAC.

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> Will this be OK? Dont want to risk anything, returning could be a problem! > > Many thanks, > > -Simon H > >

If you see this: ___ - - - that means the output is DC. DON'T use an adapter that outputs AC as you will most likely destroy your Momo. A travel adapter that can convert from your AC supply/mains/outlet voltage to 120 VAC might be the simplest thing to use. Your air hostess friend probably knows exactly where to get one. Just plug it in to your wall supply and then plug the Momo's power pack into it. -- callsignviper The truth is out there. You just have look in the right places and ask the right questions.

It's quite unusual for a transformer made for electronic equipment to put out AC power. The USR modem must have the rectifier circuit (changing AC to DC) built in. When matching a transformer, you also have to consider the tip polarity and size. Generally the polarity of modern equipment is set up with the tip being positive.The size of the plugs (or tips) do vary, though. If equipment wants a transformer that will supply 24V and 750ma, that means that the maximum voltage should be 24 and the minimum amperage is .75A (or 750ma). If it draws 750ma at 24V, lowering the voltage might cause it to draw more amperes.Think of it this way: the 24V is pushed by the transformer into the equipment. The 750ma is pulled by the equipment from the transformer. It pulls as much as it needs depending on the load at any given time, but will not pull more than 750ma as long as 24V is supplied. First, never use AC when DC is required. It will definitely burn out the wheel. In practical experience with wheels: most FF motors are actually 12V or 18V motors. All need DC power. When you're trying to find a replacement transformer, try to get one with 24V, but 21V will also work. Make sure is can supply at least 750ma, but it's even better if it will supply 1000ma (1Amp) or 1200ma (1.2A) or even more. The more amperage the transformer can supply, the more it will cost, but it will probably last longer. If the transformer is only capable of 500ma, for example, and the wheel is trying to draw 750ma, the transformer will burn out. If the transformer puts out 30volts, the wheel will burn out. Inside the wheel, there are voltage regulators. One will drop the 24V down to 5V to run the PC boards (all the electronic stuff). The only thing that will actually use the 24 volts is the motor. If the voltage supplied by the transformer is too low, the voltage regulator may not supply the PC board with 5 volts and the wheel may not work. -- Slot Tweaks & Reviews www.slottweak.com "Simon H" <[email hidden]> wrote in message news:[email hidden]... > Hi, > > Just got a Logitech MOMO Racing Force Feedback wheel from an air hostess > friend who brought it back from the states to good ol' South Africa. (For > less than half the price that they flog them here!!!!) Anyway, I need to get > an appropriate transformer. I can see that it puts out 24V and 750 mA, but > it doesnt say if its AC or DC. All it has is a little symbol next to these > values: a solid line over three dashes, lying horizontally. All the other > transformers I have put out AC. > > I have a transformer for a USR modem which puts out only 20V and 750 mA AC. > Will this be OK? Dont want to risk anything, returning could be a problem! > > Many thanks, > > -Simon H > >

What wheel did you have before? Mine uses the same transformer as the Wingman Formula Force GP wheel that I had before (the cheap plastic one, not the big red one). If you happen to have an old Logitech wheel it might have the same transformer. "Simon H" <[email hidden]> wrote in message news:[email hidden]... > Hi, > > Just got a Logitech MOMO Racing Force Feedback wheel from an air hostess > friend who brought it back from the states to good ol' South Africa. (For > less than half the price that they flog them here!!!!) Anyway, I need toget > an appropriate transformer. I can see that it puts out 24V and 750 mA, but > it doesnt say if its AC or DC. All it has is a little symbol next to these > values: a solid line over three dashes, lying horizontally. All the other > transformers I have put out AC. > > I have a transformer for a USR modem which puts out only 20V and 750 mAAC.

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> Will this be OK? Dont want to risk anything, returning could be a problem! > > Many thanks, > > -Simon H > >

"Simon H" <[email hidden]> wrote in message news:[email hidden]... > Hi, > > Just got a Logitech MOMO Racing Force Feedback wheel from an air hostess > friend who brought it back from the states to good ol' South Africa. (For > less than half the price that they flog them here!!!!) Anyway, I need toget > an appropriate transformer. I can see that it puts out 24V and 750 mA, but > it doesnt say if its AC or DC. All it has is a little symbol next to these > values: a solid line over three dashes, lying horizontally. All the other > transformers I have put out AC. > > I have a transformer for a USR modem which puts out only 20V and 750 mAAC. > Will this be OK? Dont want to risk anything, returning could be a problem! > As callsignviper mentioned, a "travel voltage converter kit" from the US may work. I'm sure they're readily available at US airports so get your air hostess friend on the job. Here's an example after a quick search (probably not the best price and you may need one rated for "continuous use"): http://www.portabledvdstore.com/newtravvolco.html -- Joe M. > Many thanks, > > -Simon H > >

"Joe M." <[email hidden]> wrote in message news:[email hidden]... > "Simon H" <[email hidden]> wrote in message > news:[email hidden]... > > Hi, > > > > Just got a Logitech MOMO Racing Force Feedback wheel from an air hostess > > friend who brought it back from the states to good ol' South Africa.(For > > less than half the price that they flog them here!!!!) Anyway, I need to > get > > an appropriate transformer. I can see that it puts out 24V and 750 mA,but > > it doesnt say if its AC or DC. All it has is a little symbol next tothese > > values: a solid line over three dashes, lying horizontally. All theother > > transformers I have put out AC. > > > > I have a transformer for a USR modem which puts out only 20V and 750 mA > AC. > > Will this be OK? Dont want to risk anything, returning could be aproblem! > > > > As callsignviper mentioned, a "travel voltage converter kit" from the USmay > work. I'm sure they're readily available at US airports so get your air > hostess friend on the job. Here's an example after a quick search(probably

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> not the best price and you may need one rated for "continuous use"): > > http://www.portabledvdstore.com/newtravvolco.html > > -- > Joe M. >

(snip) Here's a "Recoton 1600-Watt Voltage Converter Model: ADF1600" for $19.99 (USD). Blurb: "Use this voltage converter with heat-producing appliances rated between 500 and 1600 watts. Converter kit includes 5 adapter plugs, storage pouch and instruction booklet." Link: http://www.bestbuy.com/detail.asp?e=11166940&m=1481&cat=1485&scat=1486 If that won't convert enough power for the Momo power pack I don't know what will! Since the Momo's power pack only draws *approximately* 90 watts (probably at full load) something like that Recoton might be good enough for continuous use. -- callsignviper The truth is out there. You just have look in the right places and ask the right questions.

Once again, many thanks to this group -Simon H "Simon H" <[email hidden]> wrote in message news:[email hidden]... > Hi, > > Just got a Logitech MOMO Racing Force Feedback wheel from an air hostess snip

Once again, many thanks to this group -Simon H snip