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3S or 4S |
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jorgio31 
Platinum (FR) USERID: 188908 Newbie 
Joined: 29/Jan/2010 Online Status: Offline Posts: 8 |
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 Topic: 3S or 4SPosted: 29/Jan/2010 at 11:33pm |
 I have a EDF mirage 2000 graupner with a 62mm fan, no idea about the motor not a word about it in the notice. as specified I put a 3S 2000mAh inside, it flies after avery long takeoff run and keeps flying rather slowly.
I consider putting a 4S battery instead ? will it do something good or just burn the motor dead ??
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vasy1
Platinum (US) USERID: 15488 HobbyKing aficionado 
Joined: 10/May/2009 Location: Canada Online Status: Offline Posts: 1064 |
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Posted: 30/Jan/2010 at 2:01am |
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A lot of 55 to 64 mm fans are made with 3s capable motors and come with ESC that can only handle 3s. Since I don't know exact specifications of your plane, try to contact Graupneror or search on rcgoups or rcuniverse about your plane. You can try getting a certified 4s ESC and see how your plane goes but probably best to get a certified 4s motor as well. You can also try high KV 3s motor for more speed on a 3s setup. It is a 40 Amp motor, so best to have at least 40 or even better, 50 amp esc.
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jorgio31
Platinum (FR) USERID: 188908 Newbie
Joined: 29/Jan/2010 Online Status: Offline Posts: 8 |
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Posted: 01/Feb/2010 at 4:28pm |
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Many thanks for your advice, I will try to get more info from graupner about the motor and what it can accept and then try a new esc and 4S if acceptable. If not I will consider surgery for fiiting a new motor & esc.
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jorgio31
Platinum (FR) USERID: 188908 Newbie
Joined: 29/Jan/2010 Online Status: Offline Posts: 8 |
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Posted: 04/Mar/2010 at 10:27pm |
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A little better with a more powerfull battery: 30C but the last attempt in rather bad weather and a lousy pilot (myself) ended in a destructive crash.
after opening the guts of the poor thing, it appears that the motor was very small for what I expected. Never mind I'm going to go for an F15 GWS so I will exactly know what's inside.
Thanks again for your help
Jorgio
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vasy1
Platinum (US) USERID: 15488 HobbyKing aficionado
Joined: 10/May/2009 Location: Canada Online Status: Offline Posts: 1064 |
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Posted: 05/Mar/2010 at 5:05am |
Too bad about your plane. If it is foam, it can always be put together even if you have to cut some few foam from some packaging. GWS F15 is a nice bird to fly but not scale. I found it to be ok on a 4900kv stock "blue" motors but try to get "green" if I remember correctly as they can take 4s. It is really made for only a single battery so make sure to use high "C". I had a 2200 20C and they puffed under load :( It is an easy plane to fly and land but if I was going to try again I'd get this F15. Looks more like the real deal and cheaper to setup as only 1 ESC fan and motor. |
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