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Search: Posts Made By: 57sailplane
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02-12-2011, 04:48 AM
Replies: 160
Views: 27,717
Posted By 57sailplane

well, i think there are differant designs...

well,

i think there are differant designs out there of props and i think that there are props that definatly produce more thurst at the outer portion of the prop as aperant in the pictures from...
02-11-2011, 07:14 PM
Replies: 160
Views: 27,717
Posted By 57sailplane

i would say most its just that some props are...

i would say most its just that some props are more pronouced and some less as they are designed to achieve differant things. the first prop you have there looks to me like a slow fly prop were speed...
02-11-2011, 07:07 PM
Replies: 160
Views: 27,717
Posted By 57sailplane

sorry for the double acounting z-8. i have...

sorry for the double acounting z-8.

i have and idea i am not sure if it will work but it would be very interesting to try and i just might.

you see the 118mph in my avitar that was developed...
02-11-2011, 06:08 PM
Replies: 160
Views: 27,717
Posted By 57sailplane

"You mean a prop that starts with a high pith...

"You mean a prop that starts with a high pith near the hub and continues like that all the way out to the tip? Or even one that has higher pitch towards the tip?" quote from njswede

no not one...
02-11-2011, 05:42 PM
Replies: 160
Views: 27,717
Posted By 57sailplane

after thinking this all through i really do think...

after thinking this all through i really do think that since a plane with a big fuse such as the one you have on this thread z-8 could see some improvments in speed with a totally differant design of...
02-11-2011, 05:21 PM
Replies: 160
Views: 27,717
Posted By 57sailplane

"I like your thinking but despite the apparent...

"I like your thinking but despite the apparent logic of your thinking the conclusion is incorrect. Ignoring effects of any fuselage volume that may be in the way the air actually contracts toward the...
02-10-2011, 10:19 PM
Replies: 160
Views: 27,717
Posted By 57sailplane

guys there is somthing that we over looked at...

guys there is somthing that we over looked at least i did.

i reread through the threads as i understood most and not some of the more caculative ones. but could not find anything that pertained...
02-09-2011, 08:14 PM
Replies: 160
Views: 27,717
Posted By 57sailplane

well, i might be way out of my league on...

well,

i might be way out of my league on this one as far as the math.

you guys no your math way better then i do but from the readings i have read and understand. that the angle of atack or...
02-09-2011, 02:26 AM
Replies: 160
Views: 27,717
Posted By 57sailplane

so you ran the wizard this of course is just a...

so you ran the wizard this of course is just a starting point. you must refine the data as such putting in a prop no smaller then the one you require say 8.75 inches and put one somewhat larger say...
02-08-2011, 10:42 PM
Replies: 160
Views: 27,717
Posted By 57sailplane

you are correct as far as is dosnt take a...

you are correct as far as is dosnt take a computer do to the few calculations that you do to set up a power system but you are wrong in thinking that motorcalc only does a few simple calculations or...
02-08-2011, 07:08 PM
Replies: 160
Views: 27,717
Posted By 57sailplane

oh and by the way you can build this plane and i...

oh and by the way you can build this plane and i could take this exact same setup and build it just like you do and be farther off of your results then any calculater just because of the...
02-08-2011, 06:55 PM
Replies: 160
Views: 27,717
Posted By 57sailplane

no kidding ya its a program. the program is only...

no kidding ya its a program. the program is only as good as the user. of course you or i am not going to put a 4 inch prop on the plane in this blog. would not make any sence. the user must dial what...
02-08-2011, 04:33 PM
Replies: 160
Views: 27,717
Posted By 57sailplane

motorcalc definatly considers loss of thrust from...

motorcalc definatly considers loss of thrust from fuse and wing drag. if anyone that uses it notices at top speed the amount of thrust the motor is producing this is the thrust lost by drag of the...
02-08-2011, 02:12 AM
Replies: 160
Views: 27,717
Posted By 57sailplane

so the question remains how did you go about...

so the question remains how did you go about picking the 10 size motor for this plane? your blog says 10 size motor is this an eflite?
02-07-2011, 04:57 PM
Replies: 160
Views: 27,717
Posted By 57sailplane

ok, lets say this plane. the one you have...

ok,

lets say this plane. the one you have on this blog how did you go about setting up a power system for it. oh and by the way what motor is it you are using. or is it a secret.
02-07-2011, 04:56 AM
Replies: 160
Views: 27,717
Posted By 57sailplane

quote "For the analytical part, start by...

quote "For the analytical part, start by analyzing your objectives. Do you want to go as fast as possible, as slow as possible, stay airborne as long as possible, minimize expense, maximize handling?...
02-05-2011, 03:44 PM
Replies: 160
Views: 27,717
Posted By 57sailplane

ahh, yes the variables are great. exactly...

ahh,

yes the variables are great. exactly what you explane in your example about the car. me and you both experience this when setting up a knew plane.

so you do some kind of setting up...
02-05-2011, 05:08 AM
Replies: 160
Views: 27,717
Posted By 57sailplane

so your answer is sometimes...

so your answer is

sometimes counter-intuitive solutions work best.

yes i read all about how the thrust calcs are only good for ball park figures, and the guys doing the static test have no...
02-04-2011, 04:09 PM
Replies: 160
Views: 27,717
Posted By 57sailplane

so the question arises.. what tools do you use to...

so the question arises.. what tools do you use to set up a plane and its power system?
02-04-2011, 04:55 AM
Replies: 160
Views: 27,717
Posted By 57sailplane

awe, yes i can just throw some numbers at...

awe,

yes i can just throw some numbers at motorcalc and come up with some funny figures also. if you dont believe in the tools you use and hone them to your already fixed result then that tool...
02-04-2011, 03:50 AM
Replies: 160
Views: 27,717
Posted By 57sailplane

whatever.. seems funny how this is all i use and...

whatever.. seems funny how this is all i use and done rather well.. motorcalc that is.
12-20-2010, 06:08 AM
Replies: 160
Views: 27,717
Posted By 57sailplane

oops sorry my bad..

oops sorry my bad..
12-20-2010, 05:13 AM
Replies: 160
Views: 27,717
Posted By 57sailplane

great article TDisaster, i like the part...

great article TDisaster,

i like the part about how much 1 single ounce of weight can do. man i am going to build as light as possible from now on. i was already finding this out on my own flying...
12-20-2010, 01:20 AM
Replies: 160
Views: 27,717
Posted By 57sailplane

i have built somthing simular. a gws 190.. my...

i have built somthing simular. a gws 190.. my plane is way more dragy.. so i am thinking of up grading to somthing like this. i read your description on this bird and wonder what kind of motor...
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