Model Boat Mayhem
Technical, Techniques, Hints, and Tips => The "Black Arts!" ( Electrics & Electronics ) => Topic started by: John Mk2 on September 12, 2010, 02:52:49 pm
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Hi All Got a HOR App/Cat 32in Specs 2770kv xl motor , Suppo 125amp e.s.c , 38mm prop. Been useing 14cells 3300 NiMH G.Ps . Not bad at all :-) Tryed Lipos 4s 35c- 3s 35c both 3000mah. Programmed the e.s.c (To the Letter !) Total C*ap not even 50% compared to the 14cells {:-{ Been useing B/L lipos on & off for about 2yrs now so know a little bit :-)) The Lipos were fully up & balanced 4.10v per cell Any Ideas? Heres a link to the program sheet if it helps %)
http://www.astecmodels.co.uk/suppo-esc.htm
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Hi
Just a quick thought answer may help stir the experts on here, but I may be missing something here but the voltage on the 14 cells is approx 14x1.3=18.2v and the 4S Lipo = 4x4.2= 16.8v
Hope some experts can come in on this.
Regards
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Sorted now :-)) Prop set to low {:-{ Just of interest 14cells = 966 grams 6s=330grams 4s=210grams Little bit of a difference ;) So needed to adjust the strut/C of G ect to sort it.
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Hi Glad you have it all sorted :}
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Thanks mate ;) Not half has glad as iam :-))
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well Im having a poblem with a model of mine, wonder if you can help.
Im running a flexi-shaft with a brushless motor and one of thos red plastic UV joints, problem is that the joint vibrates and after a while it will just fly appart <:(
Also for no reason it flipped over :-)
any ideas people?
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Easy :-)) A small length (2cm ish) of garden hose soften in hot water then slip i :-))t over the U.J %) A cheap fix. But do try to go for a solid coupling if you can MUCH Better ok2
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I hav put a little nitro exhaust hose over it so I can test it but it still seems to vibrate a little.
What type of coupling do you recomend and do you have any links?
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Have a look on here :-)) A solid for flexys / A u.j for solid shafts.
http://www.astecmodels.co.uk/catalog/product_info.php?cPath=1_43&products_id=667
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Oh & make sure motor/flexy shafts are lined up (& lubed) well or you will wear things out VERY Quickly {:-{
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Thanks :-)