Author Topic: 570 Electric Profile (Read 20318 times)

Crist Rigotti · « **on:** February 11, 2009, 11:01:54 AM »

Well I started on my 570 sq inch profile electric stunter last week. Here is a picture of what I accomplished by Sunday night. This week I added the Warren Truss to the flaps.
I'm planning on using a Scorpion 3020-890, a CC-45 ESC, JMP-2 timer, 4S2P 3400mah battery, Scorpion 2" metal spinner, and Xoar 12x5 electric prop.

Alan Hahn · « **Reply #1 on:** February 11, 2009, 12:09:49 PM »

Looked at the pdf--there's nothing th'air' in that fuse!

Crist Rigotti · « **Reply #2 on:** February 11, 2009, 12:16:09 PM »

I changed the pdf to a jpg.

Somebody said air is lighter than balsa!

Alan Hahn · « **Reply #3 on:** February 11, 2009, 01:56:08 PM »

Quote from: Crist Rigotti on February 11, 2009, 12:16:09 PM

I changed the pdf to a jpg.

Somebody said air is lighter than balsa!

I'm guessing no 'Ground Rounds' will be allowed with this plane.

Crist Rigotti · « **Reply #4 on:** February 11, 2009, 02:58:24 PM »

Quote from: Alan Hahn on February 11, 2009, 01:56:08 PM

I'm guessing no 'Ground Rounds' will be allowed with this plane.

I hope not! It has me thinking what would happen to the electrics. I'm hoping the ESC senses all is not well and shuts down before the smoke rises!

Mike Anderson · « **Reply #5 on:** February 11, 2009, 05:04:17 PM »

Quote from: Crist Rigotti on February 11, 2009, 12:16:09 PM

I changed the pdf to a jpg.

Somebody said air is lighter than balsa!

Do planes built from pdf's come out lighter than those built from jpg's ??

Dennis Adamisin · « **Reply #6 on:** February 11, 2009, 05:35:11 PM »

Quote from: Mike Anderson on February 11, 2009, 05:04:17 PM

Do planes built from pdf's come out lighter than those built from jpg's ??

Naw, its the other way around, remember pdfs are made out of Adobe... (groan)

Crist Rigotti · « **Reply #7 on:** February 11, 2009, 05:48:06 PM »

Very funny fellas! Get your laughs in now, because you'll be crying at the circles!

I'll keep ya updated on my progress.

Dennis Adamisin · « **Reply #8 on:** February 11, 2009, 08:45:11 PM »

OK I'll be serious (sorta) That IS a very good looking set of airplane parts you have there. Must have been difficult keeping them from floating away while you took the pix. Couple questions about the fuse:

* It looks like you are planning on a front mount? with a nose ring behind the spinner?

* Are you going to sheet the fuselage or just cover it?

Looks to me like you are going to have a very light airframe, a strong motor and a lot of electrons to burn in those new packs.
Good luck and keep it going!

Crist Rigotti · « **Reply #9 on:** February 11, 2009, 09:39:48 PM »

Dennis,
I weighed the wings so far and they weigh 7 oz which includes the tip weight box, cover and screw. They should come out finished with Monokote, flap horn, pushrod, and hinges at 11 - 11 1/2 oz. I used 3/32 balsa for the Warren Truss work on the flaps and elevators. I could of used 1/16, but I get tired of repairing the 1/16 from my heavy fingers.

1) Front mount, but no nose ring. What you see is a ply insert between the motor mounts to tie the front end together. Some on the forums think it is a waste of time, I don't. The front motor mount will be something special. Stay tuned!

2) The fuselage will be sheeted with 1/16 7# balsa on each side. The width will be 3/4 overall with the fuselage tapered to 1/4 from the stab hinge line to the tailpost. Hence the solid balsa. The plane will be all Monokote. No worries of oil and a light finish to boot.

The battery will sit inside of a pocket and the ESC and timer will be like on my Primary Force. My goal is 48 ounces. It looks like so far I'll beat it. The stab will have .25-.5 degrees of positive incidence, the motor will have 1 degree of down thrust and 2 degrees of right thrust to begin with. There will be a scoop on the inboard side. If you look closely you'll see it. It serves 2 purposes. To help cool the motor and I don't like a spinner overhanging a profile inboard side. The plane won't need a tripler and a tripler will make it a little more difficult to cover, so why bother? The spinner arc will be within the scoop outline.

It's made so if I want to run a 3026 motor I can. Possibly do some testing in prepartion for a full up electric stunter next year.....you've been warned!

Crist Rigotti · « **Reply #10 on:** March 08, 2009, 07:14:28 PM »

The wing and stab are covered and the fuselage is built. It has to be sanded and shaped. It came out very stiff and rigid. I used basswood for the engine bearers. Enjoy the pics.

Dean Pappas · « **Reply #11 on:** March 08, 2009, 08:27:05 PM »

Looks good Christ!
Nicely thought out installation, too.

Dean P.

Dennis Adamisin · « **Reply #12 on:** March 08, 2009, 08:59:45 PM »

Fantastic - still looking light and strong. Looks like ou'll have it ready for the long-rumored flying weather that's supposed to happen some day...

Leester · « **Reply #13 on:** March 09, 2009, 03:15:45 AM »

Hey Crist: Nice wing tips

Just wondering how you attached the wing

Crist Rigotti · « **Reply #14 on:** March 09, 2009, 06:29:21 AM »

Lee,
The wing was just slid in for the pictures.

Alan Hahn · « **Reply #15 on:** March 09, 2009, 07:41:29 AM »

I am envious that you don't have to spend much time on thinking about the color scheme!

Crist Rigotti · « **Reply #16 on:** March 09, 2009, 08:11:40 AM »

Quote from: Alan Hahn on March 09, 2009, 07:41:29 AM

I am envious that you don't have to spend much time on thinking about the color scheme!

Yeah, you would think with all the extra time I have I would be thinking about ESC's and stuff. I'll leave that stuff up to you.

Dennis Toth · « **Reply #17 on:** March 09, 2009, 12:40:58 PM »

Crist,

Great looking ship!! One suggestion that has worked well for me is to open up the front of the simulated cowl and drill some holes through to the motor compartment. This helps with the motor cooling if you have a spinner. On mine ship the fuse is hollow and I was able to inset the ESC and Timer. The open cowl allowed cooling air to blow over these components also.

Best, Dennis T

Crist Rigotti · « **Reply #18 on:** March 09, 2009, 01:38:45 PM »

Dennis,
I have planned a scoop on the inboard side to bring air over the motor. Just haven't gotten around to cutting the hole yet in the fuselage. See post #9 my reply to Dennis Adamisin.

Crist Rigotti · « **Reply #19 on:** March 09, 2009, 01:42:05 PM »

Guys,
While we are on the subject, look at the last picture where I have a side view of the airplane. Is the fin/rudder the "correct" size? I admit that I'm never sure if it should be taller, or wider, or more slope to the LE, more slope to the TE, etc. What's your opinion?

Dennis Toth · « **Reply #20 on:** March 10, 2009, 01:44:26 PM »

Crist,

Fin/Rudder is fine, in CL it's not a big deal, not even needed. Look at bob Hunts Genesis also the Olympic. Fin/Rudder are mostly for looks cause that's what we expect.

Best, Dennis

Crist Rigotti · « **Reply #21 on:** March 10, 2009, 07:41:25 PM »

Thanks Dennis.

Crist Rigotti · « **Reply #22 on:** March 10, 2009, 09:27:22 PM »

The fuselage is ready to cover. I soaked the edges with CA before I sanded a small radius in them. I'm amazed how much stronger the wood gets. I did that so I can control the radius while sanding and to add some "impact" resistance. I'll "wood peck" the fuse then cover it with Monokote. As you see it, it weighs 6.4 ounces. The slots are for the Velcro battery straps from Tanic.

Mark Scarborough · « **Reply #23 on:** March 11, 2009, 09:07:58 AM »

Looking good Crist,,
keep up the pictures,, looking forward to seeing how this one performs for you

Crist Rigotti · « **Reply #24 on:** March 18, 2009, 09:12:30 PM »

The fuselage is covered with Monokote. It added only 17 grams. When the Monokote matching Nelson Paint arrives, I'll paint the battery and engine compartments. On to covering the flaps, then assembly.

Dennis Adamisin · « **Reply #25 on:** March 18, 2009, 10:37:53 PM »

Hi Crist
Archie & I were just talking about you - and wondering if you got-er-done yet - man you are getting close! Its looking great too.

William DeMauro · « **Reply #26 on:** March 19, 2009, 03:08:19 AM »

Crist,
Looks great. Cant wait to see it done. This is going to be a great year for E-Cl. Do you have a projected total weight yet?
William

Crist Rigotti · « **Reply #27 on:** March 19, 2009, 06:38:56 AM »

William,
48-50 ounces. 570 square inch wing area.

Crist Rigotti · « **Reply #28 on:** March 23, 2009, 09:57:08 PM »

Glued the wing and stab in tonight. Slowly getting there. Sorry no pictures tonight. Maybe some tomorrow.

Dennis Adamisin · « **Reply #29 on:** March 24, 2009, 05:35:27 PM »

Quote from: Crist Rigotti on March 23, 2009, 09:57:08 PM

Glued the wing and stab in tonight. Slowly getting there. Sorry no pictures tonight. Maybe some tomorrow.

TEASER!

Crist Rigotti · « **Reply #30 on:** March 24, 2009, 08:10:39 PM »

I applied the microballoon and epoxy fillets tonight on the wing and stab. I also made another set of elevators that are heavier. I'll either use the light set or the heavy set when the plane is complete to balance it out where I want to start at (23%).

Alan Hahn · « **Reply #31 on:** March 24, 2009, 08:16:02 PM »

Sweet.

What are you planning for power and energy?

Crist Rigotti · « **Reply #32 on:** March 24, 2009, 08:36:55 PM »

Scorpion SII 3020-890 and my 4S 3400mah battery, CC-45 ESC and a JMP-2 timer and prop TBD!

Mark Scarborough · « **Reply #33 on:** March 24, 2009, 09:39:24 PM »

Crist,
it looks really clean, Best of luck with it.

Dennis Adamisin · « **Reply #34 on:** March 24, 2009, 09:47:32 PM »

Well boys & gurlz looks like Crist is ready to say good bye to all those greaser airplanes!

Alan Hahn · « **Reply #35 on:** March 25, 2009, 12:54:42 PM »

Well remember, Randy Gifford is one of our prominent judges around here, so Crist will need to do something to placate her husband if he is to be successful!!

Just in case it isn't obvious, the above comment is definitely tongue-in-cheek wrt Randy's objectivity. But it is difficult to keep concentration with Russ jumping up and down

in the downwind circle position!

Mark Scarborough · « **Reply #36 on:** March 25, 2009, 01:02:27 PM »

Crist,
I am working on a solution to this problem as I too have some old school judges that prefer the smell of castor while they are working. I am almost done with my electrically fired castor smudge pot. This device is run with a ztron V.4 timer, Lipoly batteries, and a small container filled with sig castor oil. It has an element that heats up and disperses the castor so the judges can catch a whiff of the sweet smell while you fly around making no smell,, It will be remotly activated by your arming switch on the airplane and timed to quit the same time your electic motor quits,, now I only need to tie it into a surround sound system to generate the engine noise and we will be set!!!

Alan Hahn · « **Reply #37 on:** March 25, 2009, 01:41:18 PM »

Quote from: Mark Scarborough on March 25, 2009, 01:02:27 PM

Crist,
I am working on a solution to this problem as I too have some old school judges that prefer the smell of castor while they are working. I am almost done with my electrically fired castor smudge pot. This device is run with a ztron V.4 timer, Lipoly batteries, and a small container filled with sig castor oil. It has an element that heats up and disperses the castor so the judges can catch a whiff of the sweet smell while you fly around making no smell,, It will be remotly activated by your arming switch on the airplane and timed to quit the same time your electic motor quits,, now I only need to tie it into a surround sound system to generate the engine noise and we will be set!!!

I just stick out my tongue and give my rendition of a 4-2-4 run!

Mark Scarborough · « **Reply #38 on:** March 25, 2009, 02:42:43 PM »

yeah but do you hit the lean portions at the right time?you konw some of them judges listen to the motor to tell what the plane is doing, I am going for the high rpm two stroke engine run, lol

Dennis Adamisin · « **Reply #39 on:** March 25, 2009, 04:21:06 PM »

Hmmmm

How about the sounds similar to a DynaJet makes when its starting?

Can skip the castor oil smell too. Just say its...Kerosene

Crist Rigotti · « **Reply #40 on:** March 25, 2009, 09:39:29 PM »

You guys just hijacked my thread!

Tomorrow I'll cover the fin and rudder and glue in the fin. I made a new rudder out of solid balsa tonight. I can use the weight in the back.

Alan Hahn · « **Reply #41 on:** March 25, 2009, 09:53:18 PM »

Quote from: Crist Rigotti on March 25, 2009, 09:39:29 PM

You guys just hijacked my thread!
Tomorrow I'll cover the fin and rudder and glue in the fin. I made a new rudder out of solid balsa tonight. I can use the weight in the back.

Well it's always fun to have fun at your expense!

Dennis Adamisin · « **Reply #42 on:** March 25, 2009, 10:27:29 PM »

Quote from: Alan Hahn on March 25, 2009, 09:53:18 PM

Well it's always fun to have fun at your expense!

..and we are collectively excited about the new bird. ROCK ON Crist!

Mark Scarborough · « **Reply #43 on:** March 25, 2009, 10:34:00 PM »

actually if you worked faster, and posted more pictures we wouldnt be so tempted to hijack your thread,,,,

Mike Anderson · « **Reply #44 on:** March 26, 2009, 11:29:40 AM »

Quote from: Crist Rigotti on March 25, 2009, 09:39:29 PM

You guys just hijacked my thread!
Tomorrow I'll cover the fin and rudder and glue in the fin. I made a new rudder out of solid balsa tonight. I can use the weight in the back.

Crist -

It may have been lost in the "Crash of '08", but I can't find the link to where you
got your batteries -

Could you repost it?

TIA
Mike@

Crist Rigotti · « **Reply #45 on:** March 26, 2009, 11:40:09 AM »

It went something like this:

I just received 4 packs from PolyNoOne. Wow!, very good quality. All four packs either weighed 312g or 313g. Now that's good quality control. They were shipped FedEx and I received them in 2 days. They were packed very well and arrived in excellent shape. Every cell measured 3.85v. These packs were made especially for my control line needs and are 4S2P 3400mah 20C packs. From the time PolyNoOne received payment till they were at my doorstep was 16 days. BTW, I put on the EC3 connectors.

This was my post on RCGroups Batteries Forum.

http://www.rcgroups.com/forums/showpost.php?p=11311966&postcount=244

http://polynoone.com/main.php

Crist Rigotti · « **Reply #46 on:** March 26, 2009, 09:31:35 PM »

The Nelson paint arrived today. I used some white right out of the bottle to brush touch up my hinges on the flaps. Looks like it will work real well. I'll post more on what I find when I paint the battery and motor compartments. Also I have to touch up the fillets too. Stay tuned.

Crist Rigotti · « **Reply #47 on:** April 01, 2009, 08:46:30 PM »

The battery and motor compartments are painted with Nelson Paints. I used a brush and it came out OK. I touched up the fillets too. It took 4 or 5 coats. The paint isn't as shiny as Monokote so I'll put a coat or 2 of the gloss clear later. Making the motor mounts and the elevators are ready to cover. It looks like it'll come out to 49 to 50 ounces.

BTW I didn't get to work on the plane last weekend due to family matters......my daughter gave birth to an 8 lb 21 inch baby boy! I'm a 3 time grandpa!

Dennis Adamisin · « **Reply #48 on:** April 01, 2009, 09:06:33 PM »

Quote from: Crist Rigotti on April 01, 2009, 08:46:30 PM

The battery and motor compartments are painted with Nelson Paints. I used a brush and it came out OK. I touched up the fillets too. It took 4 or 5 coats. The paint isn't as shiny as Monokote so I'll put a coat or 2 of the gloss clear later. Making the motor mounts and the elevators are ready to cover. It looks like it'll come out to 49 to 50 ounces.

BTW I didn't get to work on the plane last weekend due to family matters......my daughter gave birth to an 8 lb 21 inch baby boy! I'm a 3 time grandpa!

CONGRADS Gramps!

Better finish up the 570, you only got 3-4 years to get that grandson's first trainer built!

I'm still a rookie - grand daughter turned one last weekend. But she is training me good!

Mark Scarborough · « **Reply #49 on:** April 02, 2009, 08:58:47 AM »

I hear you on the family stuff, my Grandaughter (18 months) is visiting for the week. work on my airplane? NOT LIKELY. though she does like to look at my planes and point, saying "pane, pane,," yeah if only she knew how appropriate that is,, snicker,,
grandkids are pretty cool, we have the patience to enjoy them and not get frustrated, PLUS they get to go home before your ready to pull your hair out,,