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mini scout max speed
- Thread starter Kaona
- Start date
Air resistance can be calculated by taking air density times the drag coefficient times area all over two, and then multiply by velocity squared. Where are you calculating your air drag? because 2x speed is 4x drag. Also, prop thrust goes down as the plane speed goes up.
if you have a calcualtion enought to tell you your 'max speed', just plug in your 65% throttle values into that same equation and see what speed its say your plan is going to be going. for that matter, you should be able to plot a full curve of throttle to speed with the equations.
if you have a calcualtion enought to tell you your 'max speed', just plug in your 65% throttle values into that same equation and see what speed its say your plan is going to be going. for that matter, you should be able to plot a full curve of throttle to speed with the equations.
I noticed on the other setup that the wing loading was excessive according to the model specs but with this setup posted below the wing loading is just under the specs. The basic difference is a 2305 2800 edge motor with a 3s 450mah lipo instead of a 2306 2700 and 850 battery.
Seems a bit more manageable and doable. And if I wanted to rip the wings off it just put a 4S battery in it.
Seems a bit more manageable and doable. And if I wanted to rip the wings off it just put a 4S battery in it.
There are relevant factors not included in the Calculator that you are using that would seriously effect the actual maximum speed. The most serious omission is the coefficient of drag for the airframe itself.
As the drag coefficient can vary considerably subject to the aircraft design so will the actual maximum speed. As an example to consider would be a biplane and a WWII monoplane fighter design. Both could weigh the same and even have the same wing loading but the speed difference with the same power plant would be considerable.
I also build and sell RC models though I do so with fixed wing models only! If you are needing to evaluate a single motor across a wide variety of different aircraft models, (bulk purchases for best pricing can reduce the variety of inventory for a small manufacturer), you can vary the prop specifications as well as the battery size and cell count to give the required performance figures.
In your original post you were searching for ways to easily reduce the maximum speed of the model. The simplest method is to underprop the motor so that at maximum throttle the prop generates the required maximum thrust JUST!
If you are selling the setup under you require the end user to miscalibrate the throttle for correct operation I can assure you that the proper calibration will almost never occur and you could be facing a reputation destroying product and possibly a large number of warranty complaints or claims.
Just my opinions of course!
Have fun!
As the drag coefficient can vary considerably subject to the aircraft design so will the actual maximum speed. As an example to consider would be a biplane and a WWII monoplane fighter design. Both could weigh the same and even have the same wing loading but the speed difference with the same power plant would be considerable.
I also build and sell RC models though I do so with fixed wing models only! If you are needing to evaluate a single motor across a wide variety of different aircraft models, (bulk purchases for best pricing can reduce the variety of inventory for a small manufacturer), you can vary the prop specifications as well as the battery size and cell count to give the required performance figures.
In your original post you were searching for ways to easily reduce the maximum speed of the model. The simplest method is to underprop the motor so that at maximum throttle the prop generates the required maximum thrust JUST!
If you are selling the setup under you require the end user to miscalibrate the throttle for correct operation I can assure you that the proper calibration will almost never occur and you could be facing a reputation destroying product and possibly a large number of warranty complaints or claims.
Just my opinions of course!
Have fun!
funny, been talking about mini-scouts all day. built more than i can count, prob 30+ and have 3 hanging on the wall as we speak. 
NO WAY!!!!! is a min-scout gonna do that speed. i love your enthusiasm but question your sanity?
as mentioned above there are soooo many reasons why this will not happen. if you want to build something that fast, and that size, there are lot's of other options.
please don't take this wrong, but from your question i would guess you are new at this?
flying at that speed is not easy, takes serious concentration and commitment, and has a nasty possibility on failure. even the smallest plane at that speed is something to be afraid of.
i fly very fast things and if that is what you want, there are a lot better options.
be safe,
me
NO WAY!!!!! is a min-scout gonna do that speed. i love your enthusiasm but question your sanity?
as mentioned above there are soooo many reasons why this will not happen. if you want to build something that fast, and that size, there are lot's of other options.
please don't take this wrong, but from your question i would guess you are new at this?
flying at that speed is not easy, takes serious concentration and commitment, and has a nasty possibility on failure. even the smallest plane at that speed is something to be afraid of.
i fly very fast things and if that is what you want, there are a lot better options.
be safe,
me
I had a RCP V5 f-16 park jet scaled down to 90% with a pretty hot setup that read 128 miles an hour on the GPS but that was with the weight of the GPS on it and I'm sure it went a bit faster than that without the GPS unit.
And yeah you're right about one thing scary fast. And very touchy/responsive.
Seemed to glide forever.
And yeah you're right about one thing scary fast. And very touchy/responsive.
Seemed to glide forever.
I don't know anything that I haven't done yet.
Like making a mini scout go too fast just to see what happens. Haven't done that yet
If I wreck it no big deal I'll just build another one it probably won't try it again because I'm sure it's going to fail I just want to watch it do so. And to see just what it took.
I know this is not the platform for speed but don't you think it would be fun just to see what it does?
Like making a mini scout go too fast just to see what happens. Haven't done that yet
If I wreck it no big deal I'll just build another one it probably won't try it again because I'm sure it's going to fail I just want to watch it do so. And to see just what it took.
I know this is not the platform for speed but don't you think it would be fun just to see what it does?