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Old 05-17-2010, 04:38 PM
1MoClimb is offline
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Gas Engine Newbie

I'm finishing off the systems installation on my new OMP Extra 300 with a DLE 55. Here are two questions:

I'll be operating a total of 3 batteries on the model, one 6V NiMH with 1,600 mAh for the electronic ignition, an identical one for the receiver and one Li-Fe 6.6V with 2,200 mAh for the power bus driving the servos. I have a second Li-Fe 2,200 at hand and could also install that one bringing the capacity for the servos to 4,400 mAh.
Are these adequate? How long will the engine for example run on the ignition battery?

Another question regarding the engine/cowling installation. The spinner plate is located 7-10mm in front of the installed cowling. Should I shorten the engine mount stand-offs to reduce that distance?

Thanks,
Herb
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Old 05-17-2010, 04:43 PM
MODE 1 is offline
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Re: Gas Engine Newbie

Dang dude thats more electricity than Staten Island gets in a year.

Is it adequate? ummmm yeah its way over kill. You could get by with the 1600 pack for ignition and one single pack Li-Fe for the rest so long as you kept a check on it after a few flights.
1600 will easily give you 6 x 10 min flights and then some.

Dont worry about the cowl spinner gap its only to stop the spinner back plate rubbing against the cowl and causing damage....1/8 is ok usually

Forgot to add you will get longer engine runs on 4.8v than 6v of the same capacity.
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Old 05-19-2010, 12:41 PM
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Re: Gas Engine Newbie

Please use a 4.8v battery for these ignitions. I have been hearing that the 6v will burn out this ignition. I have a Fromeco 2100 lion for the ignition and two Fromeco A123s for the RX. I could get by with one and be fine, but I decided to run two to at least have a back up battery in case one fails. I might take out one later. As far as the Backplate I didnt have any issues with my spinner that was provided.
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Old 05-19-2010, 01:20 PM
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Re: Gas Engine Newbie

I've also heard that 5v is best for the ignitions. I only run the 4 cell packs now.
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Old 05-20-2010, 09:04 AM
1MoClimb is offline
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Re: Gas Engine Newbie

Thanks for all the advice, I will rewire the ignition NiMH pack for 4.8V!
Herb
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