Nov 29, 2010, 05:06 PM
Jets & Lasagna...champion diet
T-CAT's Avatar
Quote:
Originally Posted by Ben D Wing View Post
As per the funjet instructions works extremely well, quote:

''The first flight ...
Do not attempt to hand-glide this model!
The FunJet is designed for hand-launching only - always launch
directly into wind.
If you are a beginner to model flying we strongly recommend
that you ask an experienced model pilot to help you for the
first few flights. The model should be launched at ½ to ¾-
throttle, with the wings level and the nose angled up at an angle of 20 - 30°.
Don’t launch the model “down-hill”, like a glider!''

If you do launch it at an angle below the horizon then that is the point where you are most likely to injure yourself.
Thanks Ben. I appreciate your input. To be honest, a pusher makes me nervous. I have launched EDF's hundreds of times so technique shouldn't be an issue. This should hopefully minimize the risk. However, this won't eliminate the risk associated with pushers. I have everything I need for this ultra, except for the jet. Now I just need to determine whether or not I'm comfortable launching it. I could always put the power system and electronics in something else. Everything has it's risks, but now I just need to weigh them.
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Nov 29, 2010, 05:23 PM
Registered User
XtremeWingRC's Avatar
Once youve been flying a pusher for a while, like a few hundred flights and 2 years later your gonna laugh at this, because it becomes like breathing when you throw it. I could launch it with my eyes closed.

Also too fellas, you dont have to have the power on when throwing, just throw it then hit the throttle. I know it will torque roll a lil when doing that, but if your really that afraid then try that.

casey
Nov 29, 2010, 05:26 PM
"Where are the shovels?"
wise guy's Avatar
The problem with the no throttle trick is weight... the 1500 watt + planes are so heavy!
Nov 29, 2010, 05:36 PM
customstandoffs
cmala's Avatar
Quote:
Originally Posted by XtremeWingRC View Post
Once youve been flying a pusher for a while, like a few hundred flights and 2 years later your gonna laugh at this, because it becomes like breathing when you throw it. I could launch it with my eyes closed.

Also too fellas, you dont have to have the power on when throwing, just throw it then hit the throttle. I know it will torque roll a lil when doing that, but if your really that afraid then try that.

casey

complacency can be deadly
Nov 29, 2010, 07:05 PM
rrp
rrp
Registered User
rrp's Avatar
Quote:
Originally Posted by Jurgen Heilig View Post
You really don't need a rubber band:

Another advantage of a turbine over an electric prop drive.

Jürgen
Well, I really didn't mean the bungee ... rubber band ... as in powered. It was supposed to be a joke, Jurgen. Yeah, I won't quit my day job.
Nov 30, 2010, 02:28 AM
Registered User
Jurgen Heilig's Avatar
Quote:
Originally Posted by wise guy View Post
Like it or not, your finger comes within millimeters of being cut off forever everytime you launch a funjet. This is a problem.
There are many ways to launch a FunJet and your fingers don't need to come close the prop. Here is an older compilation of FJ hand launches:
How to Hand launch A FunJet (1 min 39 sec)


Contrary to some launches in the video, it is safer to continue the circular motion of your throwing arm.

Jürgen
Nov 30, 2010, 11:02 AM
Life's short - Enjoy!
DeeCee 57's Avatar
found that hand-lauching my Himax FJ full throttle at +/- 45° angle (yes, against the wind) gives:
- predictable results
- time to get rid of the moisture/dirt from your right hand (mode 2) on your trousers, then go to the right stick
- time for flight path adjustments if needed

Guess the method will work as well on the FJU when I'm finished (working on those CF fins right now )
Nov 30, 2010, 11:37 AM
^(_Mš®ăĻēŜĐ_)^ ЯuĽeˇ U
Quote:
Originally Posted by dicker View Post
Ok, the hinges of the FJ ultra are robust and perform up to 300kph (180mph) without any problem.
Can you suggest us a setup to achieve this speed?? Thanks mate!!

Dmitris, Greece.
Nov 30, 2010, 12:29 PM
foamforce pilot
dicker's Avatar
Quote:
Originally Posted by MoRaLeSD View Post
Can you suggest us a setup to achieve this speed?? Thanks mate!!

Dmitris, Greece.
https://www.rcgroups.com/forums/show....php?t=1340571

Motor was a Dymond HQ3651 from modellhobby.de

Julian
Nov 30, 2010, 02:42 PM
^(_Mš®ăĻēŜĐ_)^ ЯuĽeˇ U
Hm let me see!
Dec 01, 2010, 04:36 AM
foamforce pilot
dicker's Avatar
Quote:
Originally Posted by MoRaLeSD View Post
Hm let me see!
what? Logs and data is in the linked thread?

Julian
Dec 03, 2010, 12:38 PM
Trusted Verified User
griffin 27's Avatar
I received and installed one of these and I'm using a HET motor. The problem I have with it is the hole around the motor shaft is to small to fit the prop adapter close to the motor.

Does anyone else have this problem, I guess I could always dremel out the hole and make it bigger.


Quote:
Originally Posted by ongl View Post
Gryphon,

Yup my het motor mount looks exactly like that. Anyway I have included some photos for your reference. Hope this helps!

ongl
Dec 03, 2010, 12:53 PM
Registered User
Ben D Wing's Avatar
Quote:
Originally Posted by griffin 27 View Post

Does anyone else have this problem, I guess I could always dremel out the hole and make it bigger.
I haven't received mine yet, but there doesn't look to be a lot of meat to trim off that mount. Maybe you could try a different adaptor as some have deeper immersions than others.
Dec 03, 2010, 07:02 PM
rrp
rrp
Registered User
rrp's Avatar
Quote:
Originally Posted by griffin 27 View Post
I received and installed one of these and I'm using a HET motor. The problem I have with it is the hole around the motor shaft is to small to fit the prop adapter close to the motor.

Does anyone else have this problem, I guess I could always dremel out the hole and make it bigger.
I'm assuming this is the red aluminum mount, griffen? I too, ordered one of those. What is the center hole diameter? The base of my adapter is abouts 10 mm. Looks like a very tight fit?

It appears Tower had the yellow/gold one back in stock early this week and I was able to nab the last one from their stock. I expect to get it next week. My airframe has shipped from Malaysia. Making progress, slowly.
Dec 05, 2010, 04:16 PM
Registered User
dogshome's Avatar
Quote:
Originally Posted by schim View Post

The other problem was: totally wrong setup CoG!!!!
I just saw the vid

Very funny and I know the feeling:- "Should I try and land? or just stay up here??"


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