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Twmaster
05-21-2006, 05:00 AM
Well I picked up a Rascal 110 today. It is mostly assembled. Just needs the powerplant, receiver and final rigging of the pull-pull for the rudder and tail gear.

It came with 4 Hitec HS-645MG servos installed. Weight thus far is 8 pounds 8 ounces.

Now to power it. I was hoping for the E-Flite Power 60/Phoenix 80 to be enough to fly her at around 1KW or so using 24 NiMH cells.

Thoughts? Suggestions?

Twmaster
05-21-2006, 06:00 PM
Photos!

http://www.twmaster.com/stuff/giant.jpg
http://www.twmaster.com/stuff/giant1.jpg
http://www.twmaster.com/stuff/giant2.jpg
http://www.twmaster.com/stuff/giant3.jpg

The other Rascal in the photos is a 49" span model.

Mmmm. Big.

qban_flyer
05-21-2006, 09:01 PM
Can it carry two Lil' Rascals under the wings to be deployed as gliders? :p

e power
05-21-2006, 09:34 PM
Mike,
I would use an Axi 4130/16 on either 6s lipo or 24 cells ,an apce 15 x10 prop 1110 watts @ 42 amps,will fly great on this.
cheers Euan.

Twmaster
05-21-2006, 09:41 PM
Thanks Euan.

I was thinking about that or an E-Flite Power 60 which is supposed to be the same motor.

I need one more 3S 1700 pack from Vammy to make me a 6S2P 3400 to fly it.

Gee, I may be able to afford to fly that this summer after all!

zappedalaskan
05-22-2006, 04:04 AM
That is very nice TW, looks like it's in great shape. Bet it's a great flyer.
Jay

Twmaster
05-22-2006, 04:41 AM
If it behaves like the rest of the rascal line it should be grand! This thing is new never flown. The previous owner worked in a hobby shop and started the assembly (what you see there) never got around to flying her.

I just got an AXi 4130/16 off a good seller on RCG and I now need to find a Castle P85HV and one more 3S 1700 pack from Vammy and I think I'll have it nailed.

e power
05-22-2006, 10:22 PM
hello,
why use the 85 hv? I use the cc 60 amp on all of my AXI 4130/16 s with no problems,even turning an APCE 17x10 in my Fliton Extra,its a lot cheaper and more reliable,my hv 85 lasted 1o mins ,cc did replace it,took over a month to get back to the UK,sold it soon after<,
cheers Euan

Twmaster
05-23-2006, 02:33 AM
Why the HV85?

Per your previous comments you mentioned 24 cells (or 6S lipo) and according to the Castle web site the P80 tops at 20 cells.

e power
05-23-2006, 06:36 AM
Mike,
you are correct,but I thought you would be using 6s lipo,still will not buy another hv 85,perhaps the turn around for service in the US is better?Have you considered the Jeti range?,
hope you get the plane flying soon and that the weather is better than it is here.cheers Euan.

Ronald
05-23-2006, 02:04 PM
The Phx. 80 works fine with the Axi 4130 on 6s lithium. 6s=22.2volts, 20cells=24.0 volts 24cells=28.8 volts. I run props from 15x8 to 16x10 with no problems at all.
I really like the Rascal 110 and hope to get one myself. I have a Rascal 40 that flys on a Astro 25 geared brushless, 4s2p 4200, and a 14x7 prop. that is a real joy to fly.
Good luck on your 110 I'm sure it will be a great flyer. Oh, by the way do you have the wing struts for yours? I didn't see them in the photos.
Ron

Twmaster
05-24-2006, 02:59 AM
Ronald,

Thanks for the info. A PH80 it will be then. Does the PH80 also have programmable voltage cut off points? (ie compatible with lipo?)

Oh, geez. Also, welcome to WattFlyer Ronald!

Ronald
05-24-2006, 02:43 PM
Mike, Yes the phx80 is programable. You can use your transmitter and listen for a series of beeps (which can be a real pain) but I reccomend that you get the "Castle Link" which plugs into the USB port of your computer and allows you to program you esc through your computer. It works great and makes programing easy. It also will work for any other Castle Creations brushless ESC as well.
Ron

Twmaster
05-25-2006, 01:34 AM
Thanks again for the info Ron. I can't use the Castle link as their software is Windoze only and I won't have any such foolishness on my network.

Otherwise I'll just have to go through their silly TX based setup. :(

Time to scour the usual places for an ESC next week after payday! :)

WingTips24
05-25-2006, 08:29 PM
great looking plane!

Tips

Rugar
05-26-2006, 02:36 AM
Mike,
Just spotted this Jeti 77 ESC for sale at RCG's. Would work perfect for your setup.
http://www.rcgroups.com/forums/showthread.php?t=522321

Twmaster
05-26-2006, 02:39 AM
I saw that too. I don't know enough about the Jeti ESC's. My biggest concern is lipo cutoff. Otherwise that would be perfect.

Of course if I decide to go with round cells it's no longer a problem.

:)

Rugar
05-26-2006, 02:51 AM
I saw that too. I don't know enough about the Jeti ESC's. My biggest concern is lipo cutoff. Otherwise that would be perfect.

Of course if I decide to go with round cells it's no longer a problem.

:)

I use this same ESC with my Axi 4130/16 (almost the same as a E-Flight 60) on my Fliton Extra 330 on a 6S2P setup. The Jeti Advance Plus can be programmed for lipo cut off with a program card available from Hobby Lobby for $8.00 That ESC sure looks like the Advance Plus.
http://www.hobby-lobby.com/jetiblue.htm

P-6e
05-26-2006, 03:34 PM
I am pretty sure it is the Adv. Opto, not the Opto plus....

Is there any advantage, especialy to heat build up, of using a higher rated than necessary ESC; the 85 rather 77. Will the higher rating run cooler given the same motor? I could see it more easily in using a 100 rather than a 77 or 80. Am I wrong?

Twmaster
05-26-2006, 10:51 PM
Would an Advance 70-3P Opto be a reasonable choice? I have access to one at a good price new. The paperwork for it says it can do 6S lipo.

Jollyroger
05-26-2006, 11:24 PM
I watched two Rascal 110's fly at the Mid America Flies two years ago. Both were powered with Maxcims and MEC gearboxes. They were majestic in the air, to say the least. I don't remember how many cells they were using.
Good luck with yours! jollyroger

TManiaci
05-27-2006, 05:05 PM
I think you will be dissapointed with a Power 60 or AXI 4130. A freind of mine started with the 4130/16 on 6S 4000 mAH on his Rascal 110, very sluggish and only 6 minutes of fly time. I persuaded him to go to the 5330/18 on 10S 8000 mAH and it is real nice now. This is a really heavy bird, and BIG. You'll want more if you go with the E-Flight P60 or the AXI 4130, I am sure. Those are good for around 1100 watts, you need more like 1600 watts to make this bird fly well IMHO.

P-6e
05-27-2006, 06:39 PM
If i have it worked out right, [with the help of Carl at Solo props]
5330/18 and 5330/F3a on 10 S Lipo rated to 37 volts with an actual average draw around 32V
5330/18 would give 7000 to 11000 rpm on 2 blade from18-19x12 or 20x13-12
or go to 3 blade props and reduce 2" pitch or diameter [or 1 pitch And 1 diameter for the extra blade
5330/18 and a 3 blade 18x12 or 20x10

Thanks to Carl at Solo for the prop help.

Twmaster
05-27-2006, 07:46 PM
I think you will be dissapointed with a Power 60 or AXI 4130. A freind of mine started with the 4130/16 on 6S 4000 mAH on his Rascal 110, very sluggish and only 6 minutes of fly time. I persuaded him to go to the 5330/18 on 10S 8000 mAH and it is real nice now. This is a really heavy bird, and BIG. You'll want more if you go with the E-Flight P60 or the AXI 4130, I am sure. Those are good for around 1100 watts, you need more like 1600 watts to make this bird fly well IMHO.

I'm expecting the thing to come in at less than 11 pounds so there would be ~100W per pound. That should fly the thing well by the numbers.

To be honest I am not willing to spend the money required for a 10S battery setup so perhaps this will end up a doomed project.

"Back to the drawing board." -- Wile E. Coyote

:p

Rugar
05-27-2006, 08:22 PM
I'm expecting the thing to come in at less than 11 pounds so there would be ~100W per pound. That should fly the thing well by the numbers.

To be honest I am not willing to spend the money required for a 10S battery setup so perhaps this will end up a doomed project.

"Back to the drawing board." -- Wile E. Coyote

:p

I get a little over 1250 watts from my Axi 4130/16 with a APC 17X10E @ 55amps on a fully charged TP6S2P 4200PL pack. My planes AUW is 7 1/2 pounds and I have ballistic performance. It will ROG in less then 15' and I can point it straight up and it will keep going until it disappears.

I don't know what kind of performance your looking for, but I would think that the Rascal would sport fly just fine at a little over 100 watts per pound. The 4130 6S setup will also be a lot lighter then the 5330 10S setup.

TManiaci
05-27-2006, 09:09 PM
The specs say 11-13 lbs. You can plan on being over 13 in the real world. That's gonna require a bit more. 1200 Watts will be okay, but it won't be as strong as you think. The airframe is pretty draggy apparently. At least that was our conclusion. My buddy started with 1100 watts, and only flew it once like that, it was such a dissapointment. Flew like it was only making 700 watts. Hope you have better results. Good luck, and keep it light!

n001pa
05-31-2006, 09:16 AM
I am following this thread with great interest. I have a 110 that is waiting for me to put together and I haven't decided wether to go small gas or big electric. If your's works out I may copy your set up. So keep us posted as to how it works.

Twmaster
05-31-2006, 05:02 PM
In all honesty I believe I am going to abandon this project. After thinking about it the time and money I have and will have tied up in it is not worth the effort. I can gain much more fun and satisfaction by directing my efforts and money elsewhere in the hobby.

n001pa
05-31-2006, 08:00 PM
If you decide to sell the rascal let me know. I probably can't afford it right now but maybe in a few weeks. I would love to get a second one and go gas and electric to see how they compare.

Twmaster
05-31-2006, 08:18 PM
Somebody else already has first dibs. Besides, you don't really want to drive all the way over here to pick it up anyways. Right?