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Thread: Petzl Myo Xp mod?

  1. #1

    Default Petzl Myo Xp mod?

    Hello,
    I have been reading about upgrading this light. Couple of questions? How do I know if I have the older Myo XP without the newest LED? Do you have any suggestions as to which LED to buy?

    Thank you!!!!!
    todd

  2. #2

    Default Re: Petzl Myo Xp mod?

    http://www.dealextreme.com/details.dx/sku.1445

    Will the LED above be okay?

    Thanks,
    todd

  3. #3
    Flashaholic* Szemhazai's Avatar
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    Default Re: Petzl Myo Xp mod?

    These DX so called U-bin leds are crappy, beter look for U2 star from PhotonFanatic.
    http://www.cpfmarketplace.com/mp/sho...d.php?t=184854

    In any case you will have older led in your Myo XP than U2
    Last edited by Szemhazai; 01-26-2009 at 01:46 PM.
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  4. #4
    Flashaholic tnuckels's Avatar
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    Default Re: Petzl Myo Xp mod?

    As to your second post:

    The main picture in the DX listing shows a “true” (yes, apparently there are fakes out there for just about anything you can imagine) SSC P4 mounted (off center?) to a 3d party star. Subsequent pictures show a P4 mounted to a “real” SSC star, but when you mouse over them the enlargements show the ugly star again.

    So, which star are they gonna’ ship you? Probably the ugly one.

    There is a note toward the bottom of the DX listing prompted by CPF complaints about mis-mounted emitters being damaged when connected to power sources. Here are pictures of the DX SSC P4 mounted to a star. And here is a close-up of some real SSC P4 Stars.

    SSC most probably chose an aluminum alloy with the best heat dissipation properties, bonded it permanently to the thin electrical trace layer, and tests their manufacturing process rigorously. Did DX or its star suppliers do their homework as thoroughly?

    So, whose star are you gonna’ trust in your nice headlamp?

    Don’t get me wrong, I’ve not had a problem buying from DX or the quality of what they sell, and their P4 star is inexpensive and will most probably work. However, my expectations when buying from DX are tempered by the fact that most often you get what you pay for.

    Do yourself a favor this time round and buy a real SSC P4 star. After all, you like your headlight well enough to upgrade it … start the process by buying a quality star.


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  5. #5

    Default Re: Petzl Myo Xp mod?

    Quote Originally Posted by todd92371 View Post
    Hello,
    I have been reading about upgrading this light. Couple of questions? How do I know if I have the older Myo XP without the newest LED? Do you have any suggestions as to which LED to buy?

    Thank you!!!!!
    todd

    Hey I have the myo xp too. Can you post your mod and pm me? Also can u post where you bought the new led?

    Thanks

  6. #6

    Default Re: Petzl Myo Xp mod?

    Thanks for the advice! Where do you suggest buying a good sample of the SSC p4 star?

    todd

  7. #7
    Flashaholic gillestugan's Avatar
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    Default Re: Petzl Myo Xp mod?

    Im happy with the U-bin SSC P4s I've bought from DX. There are no subjective difference in brightness compared to a XR-E Q5 and with much more uniform beam then the crees. Maybe I was lucky...
    But of course: you never really know what you get from DX or KD.

  8. #8
    Flashaholic tnuckels's Avatar
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    Default Re: Petzl Myo Xp mod?

    Fred, AKA Photon Fanatic, has the good stuff. Maybe you and problemchild200 could split the $20+ minimum order, though if this is you first mod, having a spare on hand is comforting and sometimes necessary. Remember, try not to touch the “gummy” LED dome too much (or at all) to prevent accumulation of dirt and dust and you can probably re-use the thermal paste from the backside of your original star.


    I don’t own the MYO XP (though my MYO RXP should be here any minute) so I’m not quite sure of the progression of LEDs used in the headlamp. The “U2”s are quite recent though, so if your light has any age on it this is certain to be an upgrade, just not sure how much.


    Half-watt (see his sticky at the top of the headlamp forum) might be a good source on which LEDs were used when, or contact PETZL directly.


    There are also some good step by step guides in the headlamp forum on this upgrade. I’m just too lazy right now to look them up for you. Scroll to the bottom of the forum and enter you search terms in the Search This Forum box.


    Good Luck and happy modding!
    ◦◦ TNuckels ◦◦ Computers should WORK ... People should GROOVE !!!
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  9. #9

    Default Re: Petzl Myo Xp mod?

    I just looked at mine and I do have the rxp model. Can I mod it to a p7 ?



    Quote Originally Posted by tnuckels View Post
    Fred, AKA Photon Fanatic, has the good stuff. Maybe you and problemchild200 could split the $20+ minimum order, though if this is you first mod, having a spare on hand is comforting and sometimes necessary. Remember, try not to touch the “gummy” LED dome too much (or at all) to prevent accumulation of dirt and dust and you can probably re-use the thermal paste from the backside of your original star.


    I don’t own the MYO XP (though my MYO RXP should be here any minute) so I’m not quite sure of the progression of LEDs used in the headlamp. The “U2”s are quite recent though, so if your light has any age on it this is certain to be an upgrade, just not sure how much.


    Half-watt (see his sticky at the top of the headlamp forum) might be a good source on which LEDs were used when, or contact PETZL directly.


    There are also some good step by step guides in the headlamp forum on this upgrade. I’m just too lazy right now to look them up for you. Scroll to the bottom of the forum and enter you search terms in the Search This Forum box.


    Good Luck and happy modding!

  10. #10
    Flashaholic tnuckels's Avatar
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    Default Re: Petzl Myo Xp mod?

    A P7 … totally different animal. Much bigger, more power (?), etc. … I’m not saying it couldn’t be done, but this is not a simple star swap which basically entails opening the light, de-soldering two wires from the old star, re-soldering them to the new star, and closing up the light.

    I think you’re on your own if you try to swap to a P7, so be happy, don’t worry, you’ve got the latest and greatest (MYO RXP) … at least for the moment.
    ◦◦ TNuckels ◦◦ Computers should WORK ... People should GROOVE !!!
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  11. #11

    Default Re: Petzl Myo Xp mod?

    Quote Originally Posted by tnuckels View Post
    A P7 … totally different animal. Much bigger, more power (?), etc. … I’m not saying it couldn’t be done, but this is not a simple star swap which basically entails opening the light, de-soldering two wires from the old star, re-soldering them to the new star, and closing up the light.

    I think you’re on your own if you try to swap to a P7, so be happy, don’t worry, you’ve got the latest and greatest (MYO RXP) … at least for the moment.
    What about an MC-E ?

  12. #12
    Flashaholic tnuckels's Avatar
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    Default Re: Petzl Myo Xp mod?

    Problemchild200, it’s not quite as simple as replacing a 40w with a 120w light bulb. LEDs are more like … like trying to replace a 40w, standard base, 120vac bulb with a 120w, bi-pin base, 12vdc bulb . (Pics are not accurate, just for demonstration purposes)

    Different size, different shape, different connectors, different power requirements, and to top it all off the reflector/optic/lens designed to work with one particular LED is usually quite different from one designed for another LED. The exception to this incompatibility has been replacing an older Luxeon I or III with a new SSC P4 which is close enough in all respects to be virtually interchangeable, giving you more output for the same runtime. This is why you read about so many mods of this sort, because it’s fairly easy to do.

    Maybe one day LEDs will be like standard light bulbs, but till then it’s better left to the pros … of which I do NOT count myself.
    ◦◦ TNuckels ◦◦ Computers should WORK ... People should GROOVE !!!
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  13. #13

    Default Re: Petzl Myo Xp mod?

    Quote Originally Posted by tnuckels View Post
    Problemchild200, it’s not quite as simple as replacing a 40w with a 120w light bulb. LEDs are more like … like trying to replace a 40w, standard base, 120vac bulb with a 120w, bi-pin base, 12vdc bulb . (Pics are not accurate, just for demonstration purposes)

    Different size, different shape, different connectors, different power requirements, and to top it all off the reflector/optic/lens designed to work with one particular LED is usually quite different from one designed for another LED. The exception to this incompatibility has been replacing an older Luxeon I or III with a new SSC P4 which is close enough in all respects to be virtually interchangeable, giving you more output for the same runtime. This is why you read about so many mods of this sort, because it’s fairly easy to do.

    Maybe one day LEDs will be like standard light bulbs, but till then it’s better left to the pros … of which I do NOT count myself.
    Thanks.....
    I just ordered an h60. I will sell my myo.

  14. #14
    Flashaholic* CampingLED's Avatar
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    Default Re: Petzl Myo Xp mod?

    Quote Originally Posted by todd92371 View Post
    Hello,
    I have been reading about upgrading this light. Couple of questions? How do I know if I have the older Myo XP without the newest LED? Do you have any suggestions as to which LED to buy?

    Thank you!!!!!
    todd
    Todd,
    The blue one is the older one with Luxeon III and the grey one is the newer one with SSC P4. I upgraded both my blue Myo XP and my son's one with DX emitters with great success.

    EDIT: link added how to mod: http://www.candlepowerforums.com/vb/...d.php?t=166519
    Last edited by CampingLED; 01-28-2009 at 01:56 AM.

  15. #15

    Default Re: Petzl Myo Xp mod?

    Did you notice a significant improvement in brightness after upgrading to the Seoul emitter?

    Thanks.

    todd

  16. #16
    Flashaholic* CampingLED's Avatar
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    Default Re: Petzl Myo Xp mod?

    To my eyes it is about twice as bright. New Med is about the same as the old Hi. Well worth it.

  17. #17
    Flashaholic* Szemhazai's Avatar
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    Default Re: Petzl Myo Xp mod?

    OLD Myo vs NEW Myo - on High

    on Mid

    on Low
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  18. #18
    Flashaholic tnuckels's Avatar
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    Default Re: Petzl Myo Xp mod?

    Stumbled across THIS.

    Never mind ...
    Last edited by tnuckels; 02-04-2009 at 12:56 PM. Reason: Added redundant link
    ◦◦ TNuckels ◦◦ Computers should WORK ... People should GROOVE !!!
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  19. #19

    Default Re: Petzl Myo Xp mod?

    How does the upgrade to the old myo xp compare to the new my rxp? Is it the same brightness? If not is there a brighter led that can be installed in the myo?

  20. #20
    Flashaholic* Alan B's Avatar
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    Default Re: Petzl Myo Xp mod?

    Quote Originally Posted by problemchild200 View Post
    Thanks.....
    I just ordered an h60. I will sell my myo.
    The Myo RXP and the H60 are both nice headlamps. The Myo has a bit more flexibility with 3 of 10 selectable levels and selectable flood/throw, whereas the h60 has great flood and nice runtime.

    I've done the SSC P4 mod to the Myo XP and I don't think it is quite as bright as the Myo RXP, but it was definitely an improvement over the XP. I used the DX LED but they do vary.

  21. #21
    Flashaholic* Szemhazai's Avatar
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    Default Re: Petzl Myo Xp mod?

    Quote Originally Posted by problemchild200 View Post
    How does the upgrade to the old myo xp compare to the new my rxp? Is it the same brightness? If not is there a brighter led that can be installed in the myo?
    How would you like to compare it...

    RXP vs Myo XP '08
    800mA vs 300mA

    Enlightened member of pl.rec.rowery
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  22. #22

    Default Re: Petzl Myo Xp mod?

    Quote Originally Posted by Szemhazai View Post
    How would you like to compare it...

    RXP vs Myo XP '08
    800mA vs 300mA


    Is that the sscp4 upgraded light against the rxp or the "stock" xp ?

    Im looking for an "UPGRADED" sscp4 beamshot against the rxp.

    Can you use rechargable lithiums in the xp sscp4?

  23. #23
    Flashaholic tnuckels's Avatar
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    Default Re: Petzl Myo Xp mod?

    Quote Originally Posted by problemchild200 View Post
    Is that the sscp4 upgraded light against the rxp or the "stock" xp ?

    Im looking for an "UPGRADED" sscp4 beamshot against the rxp.
    If I’m not mistaken, the ’08 XP has an SSC P4 in it, vs. the older models that had a LuxIII.

    Read: stock ’08 earlier models upgraded with SSC P4.

    So, in effect you are seeing the comparison you asked for, kindly provided by Szemhazai. Lucky you.


    Quote Originally Posted by problemchild200 View Post
    Can you use rechargable lithiums in the xp sscp4?

    Ya’ want fries wit dat too?
    ◦◦ TNuckels ◦◦ Computers should WORK ... People should GROOVE !!!
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  24. #24
    Flashaholic* Alan B's Avatar
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    Default Re: Petzl Myo Xp mod?

    Quote Originally Posted by tnuckels View Post

    Originally Posted by problemchild200
    Can you use rechargable lithiums in the xp sscp4?

    Ya’ want fries wit dat too?
    So if anyone wants to put 3.7*3 = 11.1V into their 4.5V headlamp they're probably going to have a very short test. The XP is not even rated to handle disposable lithium AAs which are 1.7V, so going to 3.7V rechargeables is not likely to be pretty.

  25. #25
    Flashaholic* Alan B's Avatar
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    Default Re: Petzl Myo Xp mod?

    Quote Originally Posted by Szemhazai View Post
    How would you like to compare it...

    RXP vs Myo XP '08
    800mA vs 300mA

    <pictures above...>
    Thanks for the beamshots. And the current measurements. Quite an increase in both of them.

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