Electrical gurus need help with mity max - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 4 (permalink) Old 07-06-2008, 09:26 PM Thread Starter
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Lightbulb Electrical gurus need help with mity max

ok, i want to put a mity max on my bike to replace the battery.
from what i can gather i would not need a voltage regulator, such as the tympanium or diodes. i am told that the mity max does the work of stepping down the voltage.

now my thoughts are this:
i am not 100% on the mity max stepping down the voltage, i mean i havent read this anywhere documented. and if i were to run it with out the tympanium would eventually cook the mity max?
or hopefully i am wrong and mity max does step the voltage down and all is well with having only a mity max and a boyer electronic ignition. please help with this, thanks.

after i get my head gasket replaced that blew out today i can get the electrical in tip top

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post #2 of 4 (permalink) Old 07-07-2008, 02:19 AM
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Wingnut,
The MityMax performs the same as the Tympanium or Podtronics rectifier/regulator - AC from alternator in, regulated DC out.

If you want to get rid of the battery (certainly not my choice), you'll need to buy a capacitor of 4500-5600 microfarads, and minimum 25V DC working voltage (preferably 40VDCW). The capacitor will be polarity sensitive, so make sure you mount it and hook it up properly.

You may have trouble starting the bike with a Boyer and with a capacitor instead of the battery, because you have to kick the bike hard(fast) enough to build up the capacitor charge via the alternator to power the coil(s) and the Boyer to create the spark.

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post #3 of 4 (permalink) Old 07-07-2008, 08:14 AM Thread Starter
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thanks very much, i will take this into consideration.
the mity max has a capacitor in it correct?

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post #4 of 4 (permalink) Old 03-27-2009, 07:53 AM
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Mity Max

Hi Wingnut, there are two types of Mity Max - Single phase which has two green wires that connect to the alternator wires plus one black and one red. If your bike is negative ground then the red wire goes to earth and the black wire goes to your ignition switch for ignition and lighting. It does not need a capacitor as it is built in with the voltage regulator and rectifier. It can be used with or without a battery. Three phase which has an extra green wire so that the three wires from your alternator go to these three and the rest is as above. As Ozbloke says, if you run it without a battery then your kick has to supply enough energy to spin the motor and therefore the alternator fast enough to charge the capacitor sufficiently to generate a spark. Good luck and safe riding.
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