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set # 8866 (URL) (16 years ago, 2-Apr-09, to lugnet.trains)
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| | Re: PF train motor
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(...) I just noticed the new PF Lithium Polymer Battery Box output is 7.4V. Am I missing something here? Did they drop it from 9V since most people only run their train controllers at the 4th or 5th 'hash mark' equating to about 7.4V maximum? Is (...) (16 years ago, 3-Apr-09, to lugnet.trains)
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| | Re: PF train motor
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(...) They made it 7.4V because all lithium polymer battery cells are 3.6 - 3.8V. Since this is a pack with 2 cells in series, you get 7.4V. A 3 cell pack is typically 11.2V. As you can see, keeping the old 9V system was not really an option if (...) (16 years ago, 3-Apr-09, to lugnet.trains, lugnet.technic, lugnet.robotics)
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| | Re: PF train motor
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(...) Eric: Thanks for the awesome explanation! I learned new stuff today...does that mean I can go home now? :-) I'm excited to see how the new motor and battery box pull. I think the new PF trains could add a lot of functionality to existing 9V (...) (16 years ago, 3-Apr-09, to lugnet.trains, lugnet.technic, lugnet.robotics)
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| | Re: PF train motor
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(...) So am I. However, I'm also into R/C aircraft so I have a long history with batteries and motors and could talk your ear off about them. I could also explain why the battery pack costs so much! (...) Yes, I give you permission to go home. You (...) (16 years ago, 3-Apr-09, to lugnet.trains, lugnet.technic, lugnet.robotics, FTX)
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| | Re: PF train motor / train speed and pulling power
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(...) Hi Dave, I was lucky to receive an Emerald train as kind of beta tester. It got motorized with a XL-PF-motor as intended in the building instruction, but I have used an old 9V battery box (equipped with 6 pc. of 1.2V NiMH rechargable (...) (16 years ago, 4-Apr-09, to lugnet.trains)
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| | Re: PF train motor / train speed and pulling power
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(...) Ben: Wow. Thanks for the video link! It looks pretty cool running there, and the speed seems to be reasonable. I don't necessarily run my trains very fast, I just usually have 5-7 pieces of rolling stock hooked on back of the freight trains. I (...) (16 years ago, 4-Apr-09, to lugnet.trains)
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| | Re: PF train motor / train speed and pulling power / noise generation
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(...) Hi Dave, yes the Emerald is not really a quiet train and from my perception it is slighly noisier than old 9V equipment. The sound is definitely different: 9V has a more metallic sound: quite harsh. The PF motor + gearing generates quite a (...) (16 years ago, 4-Apr-09, to lugnet.trains)
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| | Re: PF train motor / train speed and pulling power
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Hi Ben, (...) How did you use the old 9V battery box together with the PF motor and IR receiver? Did you create a modified 9V->PF cable? I couldn't find a way to use the old battery boxes with PF using the normal 8886 PF Extension Cable. Regards, (...) (16 years ago, 5-Apr-09, to lugnet.trains, FTX)
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| | Re: PF train motor / train speed and pulling power
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(...) Hi Ildefonso, yes I had to do some modification work on my IR-receiver. I used a 9V plug from a adapter cable 9V-to-PF (you can open these without destroying anything). (URL) (pictures from: (URL) I removed the plug from the receiver and made (...) (16 years ago, 5-Apr-09, to lugnet.trains, FTX)
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| | Re: PF train motor / train speed and pulling power
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(...) Hi Ben, Thanks a lot for the tips and advice. I'll certainly be doing this with one of my extension wires. There are some projects that I would like to use the battery box 4760: (URL) and this cable will be handy on these MOCs as well! (...) (16 years ago, 8-Apr-09, to lugnet.trains, FTX)
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