Multiplex Fun Cub - Page 665 - RC Groups
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Mar 30, 2012, 11:47 PM
Registered User
Prof100's Avatar
Quote:
Originally Posted by Kimber
Yes, semi functional!

Kimber,

Nice looking gear. Did you make or buy it?

Bill
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Mar 30, 2012, 11:49 PM
Bay Area Prop Buster
Bluhammer's Avatar
Quote:
Originally Posted by RTF Thumper
Waiting on weather now
Nice job Jim, she's a classic!
Blu
Mar 31, 2012, 01:32 AM
Hobby King Hater
Kimber's Avatar
Quote:
Originally Posted by Prof100
Kimber,

Nice looking gear. Did you make or buy it?

Bill
Now I have been insulted!

We made it!
Mar 31, 2012, 05:56 AM
Agricultural flyer
mixer421's Avatar
Quote:
Originally Posted by Mchone, Jake
Sounds great. What store did you get it at?
In the UK it's available from B&Q, a major hardware chain but it's also in most hobby stores. Part of my confusion was because most of the advice was from the US and most of those brands are hard to find here. I'm also a cheapskate!
Mar 31, 2012, 09:20 AM
WrongRudderR/C
FlattyFlier's Avatar
Quote:
Originally Posted by EFlapper
Hi Jake

The subject motor is an Exceed Rocket 3020-950. If so and you want I'll check it out on the Fun Cub is that's where you want to use it.

Dick
Yeah that's what I have and before you sad I could use a 12" prop. Thanks.
Mar 31, 2012, 09:23 AM
WrongRudderR/C
FlattyFlier's Avatar
Quote:
Originally Posted by mixer421
In the UK it's available from B&Q, a major hardware chain but it's also in most hobby stores. Part of my confusion was because most of the advice was from the US and most of those brands are hard to find here. I'm also a cheapskate!
I found it. I can order online if I can't find it in a store. The Estes spray I used gets pulled off very easly and isn't very thick at all so you can easly see where the stickers and tape used to be.
Mar 31, 2012, 11:14 AM
Registered User
Prof100's Avatar
Quote:
Originally Posted by Kimber
Now I have been insulted!

We made it!
Impressive. Take a bow.
Mar 31, 2012, 12:12 PM
Bay Area Prop Buster
Bluhammer's Avatar
Dumb question?

I need to increase my aileron throws. The control horns have no options and my control rods are already out to the end of the servo arms.

Do I have to replace the servo arms with longer ones (a major pain), or can I safely increase my HXT900 servo throws beyond 100%
Mar 31, 2012, 12:18 PM
Smooth not Shaky
EFlapper's Avatar
Quote:
Originally Posted by Mchone, Jake
Yeah that's what I have and before you sad I could use a 12" prop. Thanks.

Sadly the Vess website does not give out some critical data on their Props. My software needs data on Power multiplier and Thrust multiplier (of the prop) to determine how much power and thrust the Propeller produces.
So I have to backward engineer the results to obtain the data. Either I or you need to set it up in static and using a watts up (or equivocal) meter and measure the watts, volts, and amps consumed and RPM produced by the motor/prop combo.
I know that once you measure this combo you will know right away if it is a safe to use combo and may think that's enough. But, you may also want know how much thrust it actually produces and be able to predict the climb rate of your Fun Cub using different Vess prop diameters and pitches.
Once I have that data I can use it to calculate any Vess prop's output.

Make sense ??
Dick
Mar 31, 2012, 12:28 PM
Registered User
Scooter04's Avatar
I would increase past 100% before changing the arms unless you have real short arms or something. Just double check your throws with a gauge afterwards and don't assume that both servos ended up increasing the same. It varies depending on if you used sub trim and how much to center your servos. As a general rule I mechanically center everything as much as possible and then use the radio to fine tune. I think that comes from the helicopter world.

Sometimes really long arms get the geometry of the control rod way out of whack and can be tough on servos. Just my 2 cents.
Mar 31, 2012, 12:40 PM
WrongRudderR/C
FlattyFlier's Avatar
Quote:
Originally Posted by Scooter04
I would increase past 100% before changing the arms unless you have real short arms or something. Just double check your throws with a gauge afterwards and don't assume that both servos ended up increasing the same. It varies depending on if you used sub trim and how much to center your servos. As a general rule I mechanically center everything as much as possible and then use the radio to fine tune. I think that comes from the helicopter world.

Sometimes really long arms get the geometry of the control rod way out of whack and can be tough on servos. Just my 2 cents.
Very good post!
Mar 31, 2012, 12:44 PM
WrongRudderR/C
FlattyFlier's Avatar
Dick. Sorry for the trouble, man. I didn't mean for you to have to try to find the best vess prop. I just order edit because it was cheap and had big paddles.

I'll fly it tomarrow. I'm not looking for the optimum prop now that I know the motor isn't junk and can make the plane do what I want. I just want the same thrust from a wood prop that the 12-6E gave me. I didn't want to order a 13" vessso I took the next step down

Results from the 11-7 tomarrow

Thanks!
Mar 31, 2012, 01:02 PM
Bay Area Prop Buster
Bluhammer's Avatar
Quote:
Originally Posted by Scooter04
I would increase past 100% before changing the arms unless you have real short arms or something. Just double check your throws with a gauge afterwards and don't assume that both servos ended up increasing the same. It varies depending on if you used sub trim and how much to center your servos. As a general rule I mechanically center everything as much as possible and then use the radio to fine tune. I think that comes from the helicopter world.

Sometimes really long arms get the geometry of the control rod way out of whack and can be tough on servos. Just my 2 cents.
Thanks, that was painless! I adjusted the throws for 135% and now up is close to 30mm from 22mm. That should improve those rolls a lot
Blu
Mar 31, 2012, 03:48 PM
Big Jim
RTF Thumper's Avatar

A Double Maiden


Bowsonn and I got her done, all I can say is WoW what a great plane.
Rember theses are maiden flights in stiff wind. The planesd are high and the vids will get better.
31 Mar 12 Maiden of Two Fun Cubs.wmv (4 min 46 sec)
Mar 31, 2012, 04:07 PM
Maintain Thine Airspeed !
Redbrickman's Avatar
Quote:
Originally Posted by mixer421
I've been reading up on the safe paint types for Elapor and became totally confused.I So I bit the bullet and after cleaning thoroughly with kitchen spray cleaner and a good rinse and dry I sprayed a small strip inside the canopy with 'Plasti-kote' fast dry rattle can enamel. Two coats gave a fairly good gloss cover spraying from about 10". I left it to cure for 24hrs then gave it a polish with spray can silicon furniture polish. I've stuck various sticky tapes, blue masking, HD parcel, insulating etc., and all have removed without lifting the paint. Cheap and cheerful worked for me, maybe it won't for you!

You can also use Holts duplicolor acrylic car paints, which I think are the same as the Krylon often mentioned here. A good preparation on the elapor foam is IPA - Iso propyl alcohol.

You will also find the Plasticote clear laquer very good for sealing the paint. I used it on top of the Holts paint with great success.


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