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viper shark edf, upgrade needed!!!

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viper shark edf, upgrade needed!!!

Old 07-02-2008, 04:32 AM
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Default viper shark edf, upgrade needed!!!

just got this viper as a birthday gift and must say I`m desipointed with the original motor, batt and esc combination. so desipointed that I have only flown 4 times on each batt.

it can climb 20-25 deg. but has not got the power to make a loop from straigt flight with wot

on both my 1300mah 15c art-tech batt. I get 4.5 minut mixed flight before the motor cuts of, and the batteries get so hot that I almost can`t touch them.

so i have to find a good solution on a motor+esc combo!!

standard setup:

64mm 6 blade fan
18L inrunner kv3300 Ø20x40
18amp esc
3s1p 1300 mah 15c lipo.

I`ve been thinking on using my 3sp1 2200 mah 15-25c lipo, tower pro 30-40 amp esc and then get a HXT 2040 (130L) 4850kv Brushless Inrunner

inrunner spec:

Motor Size: 2040 (130L)
Speed: 4850kv
ESC Required: 18A
Voltage Range: 6~12v
No Load Curr: 1.8A
Max Load: 25A

Diameter: 20.2mm
Length: 42mm
Front Mounting Hole Distance: 16mm
Front Mount Thread Size: M2.5
Shaft Diameter: 2.3mm
Shaft Length: 15mm

what do you guys think of this combo, will it work??
It will gain almost 100 grams of weight
or do you know of another combo that will work?

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Old 08-10-2008, 10:09 PM
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Default RE: viper shark edf, upgrade needed!!!

i've been eying this plane i was ready to make a purchase tomorrow but maybe its not a great idea... i've already got a guanli a10 that doesn't fly stock as advertised and a guanli p51 that crashed 10 feet from the ground because it couldn't hold its weight... now i look at this and i thought it might have been a good move but i'm starting to think different... i'm a neo in the hobby but i would really like to log some flight time...

how well does the viper shark fly stock?
Old 08-13-2008, 06:56 AM
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Default RE: viper shark edf, upgrade needed!!!

I would give a blade trim a try... Simple remove every other blade turning the fan unit into a 3 blade, This allows for low draw on the power which may help with the battery issue , Higher RPM's on the fan and in some cases more thrust...

Just a thought, Might work....Might not....
Old 08-13-2008, 09:24 PM
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Default RE: viper shark edf, upgrade needed!!!

I too was going to get this cool looking design! I opted instead for a YARDBIRDS Su-27 combo kit.
It was a wise move on my behalf.

I'm curious if anyone is able to get this Viper to perform vertical unlimited climb like the yardbird is able to do?

As to GUANLI, I have the PBY (it is an awesome flier) and also the ME-109 (not so great), but I put an eflite BL parkmotor in it and it, cut off teh tail wheel, andreplaced it with a dragger hook and now is fun to fly

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