Razne čolnarske zadeve
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Če koga zanima
http://cgi.ebay.de/rc-powerboat-firma-z ... dZViewItem
http://cgi.ebay.de/rc-powerboat-firma-z ... dZViewItem
Na to isto temo sem pred nekaj časa že čital na nemškem forumu. Nekdo se zajebava in prodaja ''meglo''. Večina ga je tako ''popljuvala'', da je takoj umaknil oglas. Očitno mu ni bilo dovolj.AlesZ napisal/-a:Če koga zanima
http://cgi.ebay.de/rc-powerboat-firma-z ... dZViewItem
Lp Rado
kaj misliš s končno,ne vem,ampak zadeva izgleda po moje takole:
Ker je teža celic drugačna,moraš spremeniti položaj vseh komponent,da vskladiš težišče.Ker bi dejansko rabil 2.5 lipo celice,uporabiš pa dve,si podhranjen glede napetosti,kar moraš nadoknaditi z amperi,torej rabiš 2 celici z 4.5-5 Ah (in verjetno močnejši regulator..!).Ker imaš nižjo napetost rabiš motor z kar nekaj več vrtljaji na volt.In končno po teku moraš v 1,5h celice spet spraviti v pogon........
Ker je teža celic drugačna,moraš spremeniti položaj vseh komponent,da vskladiš težišče.Ker bi dejansko rabil 2.5 lipo celice,uporabiš pa dve,si podhranjen glede napetosti,kar moraš nadoknaditi z amperi,torej rabiš 2 celici z 4.5-5 Ah (in verjetno močnejši regulator..!).Ker imaš nižjo napetost rabiš motor z kar nekaj več vrtljaji na volt.In končno po teku moraš v 1,5h celice spet spraviti v pogon........
Every organization is in trouble once the technology changes rapidly. The key word is RAPIDLY. The switch from NiMH to LiPo is bigger than it was from lead acid to NiCd 35 years ago and especially bigger than from NiCd to NiMH.
And right now we have trouble from 2 sides:
First, the existing battery technology is pushed to a level that the cells last only very short time. The latest chineses NiMH cells are very powerfull, but whimps concerning life time. That's what makes it hard to stick to this technology without loosing people because of the high costs for replacing batteries.
Second, the LiPo technology got better very quickly and comparing similar capacity or watt hours now, it is more powerfull (peak power) at half the weight - and 2-3 times the initial costs. BUT, it's said to have much higher life span.
So from the 2 battery solutions, even though LiPo is rather new, LiPo looks much better. But as pointed out, it means quite a big change, the limits are not well known yet and - most important - it's more dangerous if used in the wrong way. So finding the right rules is'nt an easy task.
Zadnjič spremenil AlesZ, dne 21 Sep 2007, 20:35, skupaj popravljeno 1 krat.