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Trains - 9v to PF cable - is it possible? available?

Si_UKNZSi_UKNZ Member Posts: 4,179
edited May 2011 in Building and Techniques
I have an RF train which uses the old 9v cable to attach to the motor, and a new PF motor which looks exactly the same as the old motor but just has a different connector.

So Im wonder if it would be possible to cut the PF connector off the motor and attach a 9v one instead?
Or even better, (since it would be a lot less time consuming) can you buy adapters?

Has anyone tried this?


  • jgadgetjgadget Member Posts: 192
    Both extension cables, available at [email protected], should work for you.
    Product codes are 8871 and 8886.

    There are people out there that cut wires and do very clever things.
    I use these cables.
  • Si_UKNZSi_UKNZ Member Posts: 4,179
    edited May 2011
    Those cables have the PF fitting on both ends (the rectangle shaped contact) rather than the 9v contact which has normal studs with metal on the sides.
    (Dont they?)
  • jgadgetjgadget Member Posts: 192
    The lower part of one of the ends has the old 9V connector.
    The description of item 8886 states it can be used for connecting old 9V devices to the newer PF battery boxes, etc.

    Someone wrote in to Lego to complain that the lead wasn't a proper PF extension cable, since it used the old 9V connector on one end.
    Here is the response from Lego:

    Response from LEGO:By Doreen, Power Functions Specialist, LEGO Customer Services,
    April 19, 2010
    Thanks for getting in touch with us.

    We are very sorry to hear that you are unhappy with one of our products. Our extension cables 8871 and 8886 are meant to assist with the transition from our 9V system to the current Power Functions system, as well as to offer an option to extend your Power Functions system. Although one of the plugs is a 4-stud 9V plug, Power Functions elements can be stacked on top of it. Therefore, the 9V end does not inhibit use with Power Functions. Specifically, if you have a motor and a battery box, the motor wire can be attached on top of the 9V end of the extension wire, and then the Power Functions end can snap onto the battery box or receiver.

    Thank you very much for your feedback. I will make sure that it reaches our experts in Denmark.
  • jgadgetjgadget Member Posts: 192
    I should add that the end with the older connector underneath has the new style connection on top, so it functions perfectly as an extension cable for PF.
    I can't see that there was any justification for the complaint.
    (I just went to find my 8886 and 8871 cables to check.)
  • Si_UKNZSi_UKNZ Member Posts: 4,179
    edited May 2011
    Brilliant, thanks, I already have both those cables, will try that tonight.

    (that's great info - anything I can help you with?!)
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