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Author Topic: props  (Read 1074 times)

Offline paul winter

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props
« on: February 23, 2013, 07:36:01 AM »
i have been flying electric now for 6 months and love it
but never happy with overhead line tension with my planes
i have tried leadout rake ,tip weight ,thrust on my motor and non of them have really helped
but i decided to try a different prop
a normal 11x5.25 brian eather carbon prop ,and all the armchair experts said it would use to much battery
i must prove them wrong as i have 21% left with both props
also the 3 bladed prop has cured all my line tension problems
paul
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Offline john e. holliday

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Re: props
« Reply #1 on: February 23, 2013, 08:25:59 AM »
As I have stated in the past, "Each airplane power combo takes different props even of the same airplane design".   I am no expert by no means, but, am willing to try things to see what helps.  But, am glad you are getting things to work.
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Offline Avaiojet

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Re: props
« Reply #2 on: February 23, 2013, 11:13:27 AM »
Quote from: paul winter on February 23, 2013, 07:36:01 AM
i have been flying electric now for 6 months and love it
but never happy with overhead line tension with my planes
i have tried leadout rake ,tip weight ,thrust on my motor and non of them have really helped
but i decided to try a different prop
a normal 11x5.25 brian eather carbon prop ,and all the armchair experts said it would use to much battery
i must prove them wrong as i have 21% left with both props
also the 3 bladed prop has cured all my line tension problems
paul

Paul,

Nice to know that 3 blade prop is working out for you. Especially a CF 3 blade prop.

Kudos also for your experimentation.  H^^

Exactly what CF prop are you using and from what Vendor?

Thanks for posting your success!

Charles

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Offline John Cralley

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Re: props
« Reply #3 on: February 23, 2013, 01:49:10 PM »
Here is the link for the carbon fiber three blade prop:

http://flystunt.com/download/INT%20-%20World%20Catalogue%20-%20Dec.%2008.pdf

They do NOT come cheap!  y1  HB~>
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Offline Dennis Adamisin

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Re: props
« Reply #4 on: February 23, 2013, 01:52:46 PM »
Quote from: paul winter on February 23, 2013, 07:36:01 AM
i have been flying electric now for 6 months and love it
but never happy with overhead line tension with my planes
i have tried leadout rake ,tip weight ,thrust on my motor and non of them have really helped
but i decided to try a different prop
a normal 11x5.25 brian eather carbon prop ,and all the armchair experts said it would use to much battery
i must prove them wrong as i have 21% left with both props
also the 3 bladed prop has cured all my line tension problems
paul

Terrific!  Can you fill in the blanks a little, what other props did you try at what RPM's?  Airplane size & weight?  Like Doc said every bird has its own sweet spot...
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Offline paul winter

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Re: props
« Reply #5 on: February 24, 2013, 03:52:21 AM »
hi all
time to fill in the blanks

the model is my own design but it basically a strega with a cardinal 92 wing

power is a 3825 750 os motor
esc is ice lite 50
timer fm9 r
battery hobby king 5s 3000
retracts eflight  10-15

weight 54 ounces

line 15x66
handle an old Joe reinhart

prop Brian Eather 11x5.25 flat back blue square tip 3 bladed carbon fibre

ground revs 9250
lap time 5.3
flight time 5.35
paul




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Offline Dean Pappas

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Re: props
« Reply #6 on: February 24, 2013, 01:38:49 PM »
Hi Paul,
Glad things are working well ... now if only there was a pusher version of that same prop.

take care,
  Dean P.
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