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Century Radikal E640 - Swift 16 NX
› how to stretch Swift to 700mm?
01-14-2009 02:54 AM  9 years agoPost 1
just4fun2

rrApprentice

torrance

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I'm trying to build a more efficient Swift for AP use, currently I'm 550mm running 10S A123, with 800kv motor and 8 tooth pinion. Guessing under load it turns 1900rpm. the longest flight so far is 6.5 minutes at 15 amps.

Others have said to run 6S but I'm not sure I want to go that route.
So I'm thinking of building a 700mm Swift and use 10S2P A123's. As for the motor I think a 400-500Kv should be suitable, as I like to get the HS down to 1400-1500rpm.

my question is where can I purchase the parts to enlarge the Swift 550?

Please feel free to voice your opinion about my silly idea..

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01-14-2009 05:17 AM  9 years agoPost 2
oldfart

rrProfessor

Vancouver, Canada

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If it is for AP use, why turn at 1900? That will eat amps and give you more touchy cyclic which is not wanted for AP use.

Also the much heavier weight of the A123's also consume more amps then would the much lighter 6S lipo packs.

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01-14-2009 05:39 AM  9 years agoPost 3
just4fun2

rrApprentice

torrance

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yes I'm trying to knock down the HS, to 1500, but I don't have the formula for finding the correct kv rating. currently I'm at 800kv so I'm guessing a 650kv would get me down to where I want to be, maybe 550kv?

and I'm not sure how well the 550mm blades will lift at 1400-1500rpm, I figured increasing surface area is more important on AP, since this will be carrying some added gear.

I would like to plan for two 10cell Dewalts on board

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01-14-2009 09:43 AM  9 years agoPost 4
borneobear

rrVeteran

Kuala Lumpur, Malaysia.

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I've stretched it to 600 using T600 belt. If you want to go 700, you'll need to special order the belt.
Maybe talk to Thomas of AcceleratedRC:

http://www.rcgroups.com/forums/member.php?u=37685

He helped me out for my T600 to T700 conversion.
http://www.rcgroups.com/forums/showthread.php?t=976279

Good luck!

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Century Radikal E640 - Swift 16 NX
› how to stretch Swift to 700mm?
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