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11-21-2009, 06:52 AM
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#1 |
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South of the Rio Grande
 
Join Date: May 2008
Location: Santiago, Chile
Posts: 79
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4.8V ignition - can I use a 5V regulator ?
I just purchased a Rotomotor 25 engine and the included ignition says that it works with 4.8V.
In all my planes I use Fromeco batteries with regulators for different applications and I want to use a 2.600 - 7.2 battery for the ignition. The idea is to run it through a regulator that will send 5 V in a constant way to the ignition. When you charge a 4.8V battery to full capacity, you have more than 4.8V for several minutes and ignitions dont have a problem, but I'm not sure if a constant 5V could be a problem. What do you guys think ? It is such a smal difference that it shouldn't be a problem or should I just go with a normal 4.8V battery to avoid problems ? The reaason for going with a biggger battery is for standarization of my fleet. In that way I don't have to remember in which planes I have different kinds of batteries.
__________________
Composite Arf Tucano - Jetcentral Turboprop Composite Arf Corsair - Moki 250 Skymaster MB-339 - Jetcentral Rhino Skymaster Viperjet - Jetcentral Rhino Pilot-RC Decathlon - DA170 Great Planes RV-4 - Rotomotor 25 Futaba 14MZ |
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11-21-2009, 07:09 AM
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#2 |
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Metallized™
 
Join Date: Oct 2006
Location: Riga, Latvia
Age: 22
Posts: 389
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Re: 4.8V ignition - can I use a 5V regulator ?
Freshly charged 4 cell NiMh will show 5,6 volts, so you can easilly use 5v regulator!
5-5,1 usually is the voltage to stop flying  or atleast watch voltcheck
__________________
Team METALLIZED™ :: Hold My Beer And Watch Me Huck :: If you read this thread, then something good will happen!  http://www.flyinggiants.com/forums/s...ad.php?t=66349 |
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11-21-2009, 09:49 AM
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#3 |
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Bad-ass Super Contributer!
Join Date: Jan 2006
Location: Swansea MA USA
Posts: 7,536
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Re: 4.8V ignition - can I use a 5V regulator ?
Should be fine regulated at 5 volts, a freshly charged 4.8 volts stays above 5 volts for more than few minutes.
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11-21-2009, 01:41 PM
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#4 |
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If you can't HUCK it BLING IT!
Join Date: Jan 2006
Location: Just Moved.......Hampton VA
Age: 37
Posts: 9,269
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Re: 4.8V ignition - can I use a 5V regulator ?
If in real doubt call the manufacturer. Get it in writing so the warranty is still good.
__________________
Offical Member of Team Caribou Lou "Some people spend an entire lifetime wondering if they made a difference in the world. But the U.S. ARMED FORCES don't have that problem." ...Ronald Reagan |
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11-21-2009, 02:19 PM
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#5 |
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South of the Rio Grande
Join Date: May 2008
Location: Santiago, Chile
Posts: 79
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Re: 4.8V ignition - can I use a 5V regulator ?
Guys...... I followed your advice and run the ignition with the 5V regulator. No problems at all.....
The Rotomor 25 is a really nice engine..... very quiet. I installed it in my RV-4 which was equipped before with a Saito 150 because I got tired of glow fuel. Plenty of power and you can't realy notice the extra weight of the engine and an additional battery. Thanks guys.
__________________
Composite Arf Tucano - Jetcentral Turboprop Composite Arf Corsair - Moki 250 Skymaster MB-339 - Jetcentral Rhino Skymaster Viperjet - Jetcentral Rhino Pilot-RC Decathlon - DA170 Great Planes RV-4 - Rotomotor 25 Futaba 14MZ |
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11-21-2009, 09:59 PM
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#6 |
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Brest fed till the age of 35
Join Date: Sep 2008
Location: United States, WI, Racine
Posts: 1,317
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Re: 4.8V ignition - can I use a 5V regulator ?
Sounds great how about some pics. I always liked the RV's
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11-22-2009, 08:51 AM
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#7 | ||||||||||||||||||
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South of the Rio Grande
Join Date: May 2008
Location: Santiago, Chile
Posts: 79
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Re: 4.8V ignition - can I use a 5V regulator ?
__________________
Composite Arf Tucano - Jetcentral Turboprop Composite Arf Corsair - Moki 250 Skymaster MB-339 - Jetcentral Rhino Skymaster Viperjet - Jetcentral Rhino Pilot-RC Decathlon - DA170 Great Planes RV-4 - Rotomotor 25 Futaba 14MZ |
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