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Re: Wright Stuff C

Posted: February 3rd, 2019, 9:39 am
by klastyioer

Do you mind dropping a link, I've only gotten results for volare?
yea sure
on here u can get other kinds but i attached one that you may be interesting in. warning you'll need a rubber stripper if you purchase this
https://www.faimodelsupply.com/product/ ... rt-rubber/
For the rubber stripper part, is this true for all rubber that comes in box?

Edit: for example the description of this rubber is 3/32" so I would assume that it comes precut into a 3/32" strand? https://www.faimodelsupply.com/product/ ... rt-rubber/
yea u need a stripper for all of them so u can trim to sizes like .087 or .094 or whatever the ff kit comes with. u can also strip to sizes u wanna strip to but it's an expensive piece of equipment we r talking like hundreds of dollars so be careful with ur money. u can custom buy rubber off freedom flight so u don't need a stripper

Re: Wright Stuff C

Posted: February 3rd, 2019, 9:47 am
by Rossyspsce
yea sure
on here u can get other kinds but i attached one that you may be interesting in. warning you'll need a rubber stripper if you purchase this
https://www.faimodelsupply.com/product/ ... rt-rubber/
For the rubber stripper part, is this true for all rubber that comes in box?

Edit: for example the description of this rubber is 3/32" so I would assume that it comes precut into a 3/32" strand? https://www.faimodelsupply.com/product/ ... rt-rubber/
yea u need a stripper for all of them so u can trim to sizes like .087 or .094 or whatever the ff kit comes with. u can also strip to sizes u wanna strip to but it's an expensive piece of equipment we r talking like hundreds of dollars so be careful with ur money. u can custom buy rubber off freedom flight so u don't need a stripper
so the width I select when buying has no effect?

Re: Wright Stuff C

Posted: February 3rd, 2019, 9:51 am
by klastyioer

For the rubber stripper part, is this true for all rubber that comes in box?

Edit: for example the description of this rubber is 3/32" so I would assume that it comes precut into a 3/32" strand? https://www.faimodelsupply.com/product/ ... rt-rubber/
yea u need a stripper for all of them so u can trim to sizes like .087 or .094 or whatever the ff kit comes with. u can also strip to sizes u wanna strip to but it's an expensive piece of equipment we r talking like hundreds of dollars so be careful with ur money. u can custom buy rubber off freedom flight so u don't need a stripper
so the width I select when buying has no effect?
it does but the one u select is the width of the rubber. the part you strip is the motor thickness in thousandths of an inch. so if i were to use like 3/16" in i dunno .087 i would but 3/16" and then strip it down to .087 using a micrometer and a rubber stripper. do u get that cause it's kinda hard to explain and confusing to comprehend

Re: Wright Stuff C

Posted: February 3rd, 2019, 9:52 am
by bjt4888
New flight,

If the airplane is rolling left more than is desired and descending to hit the floor shortly after launch at higher torque, there are several possible issues. One interesting one that we have discovered this year is that the stabilizer tilt has a strong effect this year due to the tandem configuration allowed by the rules (wing and stabilizer basically the same size). I would check your airplane to make sure that it has no more than 2 degrees of stabilizer tilt. Also, all other turn and roll controls settings should be checked.

If motor stick bending is your primary issue, you can test this by adding 1 mm additional wing incidence. If this fixes the initial flight character, motor stick bending might be your problem. Of course, 1 mm additional incidence might not be optimal for the critical cruise and let down portions of the flight, this is just a test setting to try to understand how diving is occurring.

If roll control is the issue, that would typically happen during higher torque launches, just as you are experiencing.

Brian T

Re: Wright Stuff C

Posted: February 3rd, 2019, 11:46 am
by DarthBuilder
Does anyone have a link to Omar’s flaring props that would fit the FF models?

Re: Wright Stuff C

Posted: February 3rd, 2019, 1:17 pm
by pikachu4919
If anyone's looking for the earlier posts on the trial event, Aerial Scramble, they have been moved to their own separate thread in the builds forum.

Re: Wright Stuff C

Posted: February 3rd, 2019, 2:09 pm
by OpticsNerd
I recently ran into an issue with nose down at initial launch with higher torque. I wind rubber band to 1.3 torque and then dewind it to 0.65 torque. When I released it, it will hit on floor after several seconds. Then I picked it up and launched it again, it will fly more than 2 minutes. I then do the same thing to wind torque to 1.3 and dewind it to 0.6. it will fly ok. so, why it cannot fly with higher initial launch torque?
It's possible that your motorstick is too weak, causing it to bend at high torque which makes your plane dive.

Re: Wright Stuff C

Posted: February 3rd, 2019, 2:20 pm
by coachchuckaahs
I agree with Optics Nerd. Please also check Brian's tips, and perhaps describe a little better as to the "character" of the dive on high torque. Is it rolling in sharply (as Brian described)/ Or is it just diving or quickly sinking?

Brian's approach of adding incidence is good, as it will reveal whether this is a bending issue or a torque issue. Last year one of our planes needed twice the decalage as our primary. It flew OK, but this was excess drag in the letdown phase. Without it, the plane would not climb, or would dive at high torque. After Nationals, we experimented with stiffening the motor stick, and problem completely went away. So if increasing the decalage, even by several mm, fixes the climb, look at adding stiffness to the motor stick and see if you can return to design decalage.

Coach Chuck

regarding to propeller selection

Posted: February 3rd, 2019, 6:26 pm
by newflight
I have several propellers which are the same size with same pitch, however, the mass are very different, the heaviest is 2.3g and the lightest is 1.7. I would like to get some inputs on which propeller should be the best to use. I think the 1.7g should be the best, this will give the best weight balance. If I use 2.3g, it might make nose too heavy.

Re: regarding to propeller selection

Posted: February 3rd, 2019, 6:37 pm
by CrayolaCrayon
I have several propellers which are the same size with same pitch, however, the mass are very different, the heaviest is 2.3g and the lightest is 1.7. I would like to get some inputs on which propeller should be the best to use. I think the 1.7g should be the best, this will give the best weight balance. If I use 2.3g, it might make nose too heavy.
Are they ikara props? Just curious.