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| Engines Discuss engines |
Topic Review (Newest First)
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| 12-09-2019 09:01 AM | ||
| michaely |
Re: LiFe on ignition Quote:
Thanks for your detailed information answering the specific question asked in the original post over a year ago. I have several older gas engines w/ignition modules - as yet not run - and had not been aware of the issue that some older ignition modules might have voltage input maximums. |
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| 12-09-2019 06:10 AM | ||
| grosbeak |
Re: LiFe on ignition The Tech-Aero Ultra IBEC also includes an engine kill and an ignition voltage regulator. I have planes up to 35 cc; all use a 2-cell 2500 mAh LiFe battery with this IBEC. |
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| 12-07-2019 06:58 PM | ||
| guyl |
Re: LiFe on ignition If weight was a problem I would also use one battery pack with an electronic on/off swith on the ignition side.However I prefer to have two similar battery packs with their on/off manual switch plus an electronic cut off switch for the ignition.If you are operating on 72mhz you are better off with two separate bat. packs Some BEC generate RF interference which is noticeable on 72mhz but does not seem to interfere on 2.4ghz. I have live the experience. |
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| 12-07-2019 01:17 PM | ||
| RevX |
Re: LiFe on ignition Probably bit late to chime in but LiFe on low voltage ignis (4.8 to 6.0v) will fry the ignition box been there done that. If you run Life you need the HV boxes that except 8.4v to be safe. |
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| 05-05-2019 07:46 AM | ||
| ronheli |
Hi guys. this is what I found to be the best way on mine ignition to guaranteed there's going to be no issues. I use one battery at 3600 amps. Life battery which is a 6 6 volt.I run one switch to my receiver and 1 switch to my ignition through a optical kill a voltage regulator set at 5.2 volts. I run 645 and 5645 Hitec servos on my 30 cc and a 50cc. Had no issues whatsoever.I do like to try to keep it as simple as possible. hope this helps. |
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| 04-03-2019 12:45 PM | ||
| grizak |
Re: LiFe on ignition For what it is worth - here is my experience: Check the voltage rating on your actual ignition module (not the manual) - the DLE35RA has been around for awhile, and I know of at least 3 different ignitions that it has shipped with. Early in the DLE35RA run, they shipped with ignitions rated at 4.8v - 6.0v. In the case of these ignitions (RCEXL), the rating is very specific. So if your ignition is rated for a max of 6.0v - that means it can handle a voltage of 6.0v - NOT 6.1v or 6.2v or 6.6v. For these ignitions, a 5cell NiCAD/NiMH or a A123/LiFe is too much without a regulator. If you run one of these ignitions at 6.1v (or higher) you will prematurely kill the ignition - it may not die on the first flight or the tenth flight - but it will die before its time (we have replaced many of these ignitions because of this - we are an RCEXL reseller - and yes I have seen an ignition fail by over voltage on the very first engine run). Newer DLE35RAs have newer ignitions that are rated for higher voltages (some will be 8.4v and the newest will even be 12v) - again the actual ignition module will list the rating. Do not exceed the rating. Your manual may not correspond to the actual ignition module (they rarely update the manual). Also - don't assume that a "brand new" engine will have the newest ignition module - sometimes there is old stock, sometimes the manufacturer won't use the "newest" ignition on a specific batch of engines. Check the rating on the ignition. |
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| 04-03-2019 11:06 AM | ||
| Revy1 |
Re: LiFe on ignition Gary, no apologies needed. A little discussion is healthy. From what I have gathered so far, a 6v nimh at full charge is around 7.4v. At 7.2v full capacity, a LiFe pack falls into that "safe" range. LiPo on the other hand would need a regulator to be safe. The printing on the ignition box and the instructions do contradict each other which adds to, I'm sure, burnt out iggy's. I will use a Leopard Power 1750mAh LiFe from Pro-Rc unregulated on my new 35 on it's own switch. |
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| 04-03-2019 11:06 AM | ||
| Revy1 |
Re: LiFe on ignition same issue....double posts |
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| 04-03-2019 07:15 AM | ||
| Gary Maker |
Re: LiFe on ignition Quote:
The DLE Manual states that the range of voltage of their ignition varies between 4.8V to 8.4V but states that if one chooses to us a 7.4v 2S Lipo or a 6.6V LiFe 2S pack, that a voltage regulator IS to be used. That sounds like a contradiction to me. If the ignition will take 8.4V power source then why does a 6.6V pack need a regulator?? If someone could please explain this, then Revy1 and I will both be happy! Anyway, I called my local hobby store and they say that a regulator is NOT needed with the LiFe 2S 6.6V pack. Here's the problem: IF we go against what is stated in the manual, and it cooks our EI modules... NO WARRENTY! Then Revy1 and myself will both be up the creek without a functioning engine!! Has anyone used either of these packs to power their electronic ignition without a regulator in this size DLE engine? Revy1 and I would both appreciate an answer. Please HELP! Revy1, thank you for allowing me this space in your thread!! |
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| 04-03-2019 06:53 AM | ||
| Gary Maker |
Re: LiFe on ignition Sorry, must have somehow clicked the submit button twice. My apologies Revy! |
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