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Other › 4s for a trex 450?
04-08-2010 09:40 PM  8 years agoPost 1
bhoff

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houston texas

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i wana buy another battery for my 450 sport can i run a 4 cell and if so what do you recommend? im runnin a 14t pinion everything else is stock from the super combo kit

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04-08-2010 11:14 PM  8 years agoPost 2
ScottV

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El Dorado Hills, CA

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I believe you will need a new motor and ESC, from what I have been told you can not run the stock gear on 4S.

So long and thanks for all the fish!
`·.¸¸.·´¯`·.. ><((((º>`·.¸¸.·´¯`·.¸><((((º>

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04-09-2010 06:34 AM  8 years agoPost 3
bhoff

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houston texas

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ive been thinkin about the castle 45amp esc but wat motor do u suggest? scorpions ive heard good ratings never tried it tho

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04-09-2010 06:41 AM  8 years agoPost 4
wws2010

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La Cresenta, California - United States

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Just go 6s, it is insane!!! outrage 1700 kv with a hobbywing esc is the cheapest best solution!

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04-09-2010 07:05 AM  8 years agoPost 5
bhoff

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houston texas

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6s on a 450???

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04-09-2010 08:00 AM  8 years agoPost 6
AWittleWabbit

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O.C., CA

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https://rc.runryder.com/t576266p1/
I'm spoiled by the longer flight times and power. Might try 6s next. $18 lipo +700watts

Edit, you will need a new esc. I run the 450m with a 11t pinion. Had to bore it out to 3.5mm. There are other motors you can use.

Heli-itis sufferer.

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04-09-2010 04:11 PM  8 years agoPost 7
ScottV

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El Dorado Hills, CA

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For 4s the Scorpion 2221-10 is the way to go. Check out the for sale section this weekend, I will be posting a Scorpion motor and ESC along with a couple unused 4S batteries or PM me if your interested. I was going to go 4S but decided to get a 600e 6S heli and keeping my 450 Sport stock.

So long and thanks for all the fish!
`·.¸¸.·´¯`·.. ><((((º>`·.¸¸.·´¯`·.¸><((((º>

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04-09-2010 04:44 PM  8 years agoPost 8
hpilotrc

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NY--->>Mooresville, NC USA 8/2005

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4s on a Align 450 Pro
I run a 4s and it has plenty of power for me but I am no 3D guy.

You will need a different motor and I am currently using an Align 430L which is ok for now. I would like to get a Neu 1107h/2Y/3.2 in the future and use it along with my new CC Phoenix ICE 50 Lite which works excellent in GOV MODE. I now can actually select the head speed RPM and switch to 3 different rates on the TX.

Michael

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04-09-2010 09:32 PM  8 years agoPost 9
AWittleWabbit

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O.C., CA

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Hpilot, not true, you can use the 450m. The kv is just about right. See my link above. You just need to make a 11t pinion fit on the 3.5mm shaft. I think the 450m is nicely built. Large bearing on the the output side and handles 700 w intermittently. I think the Neu is still the best though, mine needs to get sent out for a bearing.

Heli-itis sufferer.

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04-10-2010 01:36 AM  8 years agoPost 10
Yug

rrMaster

UK. Herts

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3s on the 450 results in much too much current for comfortable safety margins in standard ESC and wiring. 4s provides a much better margin.
6s, wow. what HS, pinion, esc and motor kv are you using ?

Vegetable rights and Peace

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04-10-2010 02:27 AM  8 years agoPost 11
AWittleWabbit

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O.C., CA

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Yug, exactly my thoughts. Great power for an easy 8mins on a $18 4s pack too.

Heli-itis sufferer.

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05-22-2010 06:39 PM  8 years agoPost 12
bhoff

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houston texas

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ok im getting alot of different answers lol...so if i go 4s on one of my 450s, i would think i would just need a new esc, im not crazy 3d but i dont wana burn out my esc..so can the stock motor that comes with the sport or pro super combo be good enough for a 4s?

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05-22-2010 07:30 PM  8 years agoPost 13
Solmanbandit

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Tucson , AZ

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I am not exactly sure why you would more cells. You are adding more weight to it. I fly with a 3s and don't see any problems.
3s on the 450 results in much too much current for comfortable safety margins in standard ESC and wiring. 4s provides a much better margin.
6s, wow. what HS, pinion, esc and motor kv are you using ?
What do you mean by too much current?

Trex 700E / Trex 500 ESP - Ikon/ HD 500 - Ikon 2/ Goblin 500 Ikon 2

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05-22-2010 08:36 PM  8 years agoPost 14
hpilotrc

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NY--->>Mooresville, NC USA 8/2005

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3s vs 4s Li-Po
Less cells (3s) requires more current from the battery resulting in a faster discharge and a hot motor.

More cells requires less current keeping the battery and motor much cooler. The higher voltage provides much more power keeping the current much lower.

Yes the extra cell(s) does provide more weight but the extra energy out weighs this.

Michael

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05-22-2010 08:42 PM  8 years agoPost 15
Solmanbandit

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Tucson , AZ

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Why not just use a higher C rating battery. When you have a lower C rating, then it has to work harder to draw the current. As far as the weight to power issue, I am sure that can be debated.

Trex 700E / Trex 500 ESP - Ikon/ HD 500 - Ikon 2/ Goblin 500 Ikon 2

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05-22-2010 10:12 PM  8 years agoPost 16
bhoff

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houston texas

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ok cool...i think im gonna try a 4s and see how it does..cuz on both 450s when i run my 2500mah the battery stays cool and the motor does get a little warm and so does the esc but when i run the 2200mah 3s on them the motor/esc gets really hot...so im gonna buy a 4s and try it out

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05-22-2010 10:24 PM  8 years agoPost 17
Solmanbandit

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Tucson , AZ

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Have you ever thought on how many rpm's the motor is turning? Of course it is going to get hot.

Trex 700E / Trex 500 ESP - Ikon/ HD 500 - Ikon 2/ Goblin 500 Ikon 2

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05-22-2010 10:53 PM  8 years agoPost 18
AWittleWabbit

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O.C., CA

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Geez guys, if you are looking for great power and more than 5 mins of flight time 4s is something to look into. Yes 4s is heavier, but 7 mins of very good power on $18 2200 4s makes up for a lot. The extra weight doesn't hurt sport flying or noob 3d.

Why is it acceptable to go 10s or more on a 600 but not 4s on a 450 in peoples' minds?

Bhoff, don't forget the align esc will need an external bec. See my post linked above if you want to use the 450m on 4s. I use a jazz esc. I'm sure hk has a nice ~40-50 amp esc with a switching bec for cheap if don't want a separate bec.

BTW there was someone who used the align escape on 4s recently. Maybe you can search for the thread.

Heli-itis sufferer.

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05-23-2010 05:36 AM  8 years agoPost 19
Solmanbandit

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Tucson , AZ

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Why is it acceptable to go 10s or more on a 600 but not 4s on a 450 in peoples' minds?
First of all, when you go from the 500 to the 600, the size increase is huge. To put it in perspective, let's look at the blade sizes. When you go to the 600, you are talking about a big bird and the extra weight has less of an effect on it.

450 - 325mm
500 - 425mm 100 bigger
600 - 600mm 175 bigger
700 - 690mm 90 bigger

Trex 700E / Trex 500 ESP - Ikon/ HD 500 - Ikon 2/ Goblin 500 Ikon 2

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05-23-2010 06:31 AM  8 years agoPost 20
AWittleWabbit

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O.C., CA

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Yes you have more disc area to work with. I just think people overstate the effect of the increased disc loading with 4s. I have a 3s pro bought exclusively to have a lighter more nimble ship to work on stick banging. My 4s v1-3 se frakenbeater only feels a Tad heavier. I attribute it mostly to the pro rotor head. A good stick Banger may/will care about it being a teeny bit heavy in feel. It doesn't bother me at all, except autos

Heli-itis sufferer.

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