Author Topic: 570 Electric Profile (Read 20285 times)

Alan Hahn · « **Reply #150 on:** June 05, 2009, 04:29:33 PM »

Yes I keep hoping that APC will come out with a 3 blade version of the 11 and 12 inch props. For right now you could join the "Stork" club ----lengthen the gear and/or use larger diameter wheels.

I do both, but to be honest, takeoff from grass fields is somewhat problematical. Too many times (at least 3 times now I think) I have ripped the motor assembly out on takeoff when the prop sticks into a clump of grass. My reaction is to perform a "soft field takeoff", which does get me off the ground ok, but basically kills any takeoff points. I probably should trim the tips of my 12-6 down a hair or two.

Now maybe we should let Crist have is thread back!

John Witt · « **Reply #151 on:** June 05, 2009, 07:04:25 PM »

Roger that, Crist is being very patient--Thanks to all you guys for not making me re-invent the wheel.

John

Dennis Adamisin · « **Reply #152 on:** June 05, 2009, 08:18:16 PM »

Quote from: John Witt on June 05, 2009, 07:04:25 PM

Roger that, Crist is being very patient--Thanks to all you guys for not making me re-invent the wheel.

John

Of course not. Alan wants you to re-invent the landing gear leg..!

Crist Rigotti · « **Reply #153 on:** June 05, 2009, 08:28:06 PM »

I was going to say sumpin'!

Alan Hahn · « **Reply #154 on:** June 06, 2009, 11:33:47 AM »

Quote from: Crist Rigotti on June 05, 2009, 08:28:06 PM

I was going to say sumpin'!

Hey at least we keep your thread up at the top and make it look important!

Crist Rigotti · « **Reply #155 on:** June 06, 2009, 12:50:57 PM »

I appreciate it that. BTW, it is important!

Dennis Adamisin · « **Reply #156 on:** June 06, 2009, 06:46:12 PM »

up to 4 pages - has to be one of the largst/longest running threads in th E-forum, LOTS of good data posted in it too. Thanks to all

Crist Rigotti · « **Reply #157 on:** June 13, 2009, 10:35:04 AM »

Well, took a little time to check bench trim and add some permanent nose weight this morning. I added about 3/4 ounce of nose weight weight. It is now up to 51.7 ounces and 12.8 oz per sq foot. I checked the vertical CG and it was very close. I then checked the balance and marked it on the wing tip. BTW it balances about 23 to 24% MAC. I then ran the LO position on Line III (thanks Bob) and got a position of .766 inches aft of the CG. I was running the LO about 1 inch aft! I moved them forward to the .766 inch mark. Now to go fly it this afternoon. I'll let everybody know what the outcome was.

Crist Rigotti · « **Reply #158 on:** June 13, 2009, 07:32:11 PM »

The LO were pretty much right on target.

Aproaching 80 flights on the bird! Feeling comfortable with the plane. Did I mention how much I like the pusher prop?

Dennis Adamisin · « **Reply #159 on:** June 13, 2009, 08:48:10 PM »

Sounds really good Crist. Lessee:

* moved the CG forward a little (3/4 oz)

* THEN(?) checked CG against Line 3 and decided to move them about 1/4"

Sounds like smidgen of this offset by a skootch of that... Sounds like you got it nailed!

Sorry I lost track, WHICH pusher are you using now? How many mah?

Any luck on the LH crank for the LA yet?

Crist Rigotti · « **Reply #160 on:** June 14, 2009, 07:03:45 AM »

Dennis,
You make sound so unorganized!

The bottom line is it seems pretty close to be dialed in. Adjusted the neutral setting on the handle yesterday too. Going flying this afternoon after church so I'll put some more time on the Resolve EP.

The prop is an APCE 13x6.5P cut down to 12.5 and repitched to 3.25 at station 10 on the Prather gauge. I slowed it up by 200 rpm yesterday to 9200 with a lap time of 5.2. 9400 rpm gives me lap times of 5.1 Very good to excellent line tension everywhere. About 2200mah at 9200 5.2, and 2450 at 9400rpm 5.1 laps.

Crist Rigotti · « **Reply #161 on:** June 28, 2009, 06:47:44 PM »

At the SIG contest it was very windy both days. On Saturday, I flew my standard set up and sailed a bit in the vertical eights. I managed to post a 445.5. The laps time was about 5.1 I used 2008mah. Sunday was even windier. I boosted the rpm by 500 and flew 4.8 laps to deal with the wind. No problem. I kept up with the speed and the plane flew though the turbulence and wind very well. I posted a 471.5. I used 2558mah. It didn't have to go that fast so next time I'll only try a boost of 300-400 rpm.

John Christensen · « **Reply #162 on:** July 02, 2009, 12:36:35 PM »

Crist is correct. I was watching the flights on Saturday and could see the difference between the IC planes and Crist's electric. Only a few of the IC planes came close to mainting a constance speed, but his electric was great at keeping a constance speed. Crist was able to put up a very good flight.

Crist Rigotti · « **Reply #163 on:** July 02, 2009, 05:07:00 PM »

Thank you John, I appreciate the kind words. I have over a hundred flights on the Resolve EP now and it just gets better and better. I had a very good day today getting ready for the Nats. I added about 1/8 ounce tip weight and increased my line spacing about 1/4 inch. I really do like the pusher prop set up.

BTW, I checked the pitch on my props and I'm now running a 12.5 x 4P prop measured at station 10 on the Prather pitch gage.

Crist Rigotti · « **Reply #164 on:** July 11, 2009, 09:33:31 PM »

I'm back from the NATS and the Resolve EP performed very well. It garnered 13 appearance points. The only change I did to it all week was to add 100 rpm after Sunday's early morning practice on the L-pad. I only wish that I flew better. I answered a lot of questions about electric stunt this week. Paul Walker flew it and said that it was good. A little nose heavy for his taste. He put up close to a 500 pointer on the one and only flight he flew! Archie Adamisin flew it and he liked it too. Plenty of power. I'm going to work the CG aft and possibility of increasing the line spacing some too.

Leester · « **Reply #165 on:** July 11, 2009, 09:55:50 PM »

Congratulations on your finish Crist. You didn't bring back any Tatoos did ya

Archie Adamisin · « **Reply #166 on:** July 12, 2009, 06:51:26 AM »

Crist,

Thanks for the oppurtunity to fly the Resolve 570. It certainly answered a lot of questions I had about the effect of the pusher prop. Your power-system is very stout and you know it well. I liked how well it packaged and it certainly pulled hard. The Resolve 570 is a great flying bird. I wish I had the chance to watch you fly it.

This a great thread for anyone who wants to know how to set-up a successful ECL system. Not to mention that Crist is a first class guy!!

Crist Rigotti · « **Reply #167 on:** July 12, 2009, 07:06:32 AM »

Lee,
No tatoo's this time!

Archie,
Thanks for the kind words. You flew my airplane better than I do. Yup, the pusher prop thing works very well.

Archie Adamisin · « **Reply #168 on:** July 13, 2009, 09:56:23 AM »

Crist,

You saw my second pattern of the year. The first was with the Uncle Dennis' Hellcat. Maybe I need to build something?

Archie Adamisin

Muncie, Indiana

Crist Rigotti · « **Reply #169 on:** July 19, 2009, 08:34:28 PM »

Latest update.
I flew the Resolve today and it was fast. Yup, I had to take out the 100 RPM I put in at the Nats. I also removed some nose weight and shifted the battery aft. Much better feel to the plane. I then went to 2 foot longer lines (62 ft eye-to-eye) and the plane felt a lot more to my liking. The extra 2 feet gave me just enough more time and the plane was flying very good. The air was pretty dead and while backing up on the outside loops I hit my wake. It pancaked in and bounced up and I continued inverted for about 1/4 lap. Took off the rudder/fin and the prop. Scuffed up the top of the canopy. The damage was pretty minor. I was contemplating modifying the fin anyway. It'll be flying in a couple of days.

Alan Hahn · « **Reply #170 on:** July 20, 2009, 06:03:50 AM »

Ahhhh, it has finally been "Cristened"!

It now joins the fleet of "Ground Rounds"!

Crist Rigotti · « **Reply #171 on:** July 20, 2009, 06:28:22 AM »

Quote from: Alan Hahn on July 20, 2009, 06:03:50 AM

Ahhhh, it has finally been "Cristened"!

It now joins the fleet of "Ground Rounds"!

Alan,
LOL! I forgot about that "trend" of mine.

Leester · « **Reply #172 on:** July 20, 2009, 06:32:16 AM »

Yep and the canopy has been "Tatooed"

Da Plane Da Plane.

Crist Rigotti · « **Reply #173 on:** November 04, 2010, 09:10:29 AM »

Final note for the airplane. The 4 battery packs gave me a little over 60 cycles each over the 2 years I have had the plane. The batteries are now getting "soft" and are starting to puff slightly. They have been retired. I paid about $65 for each battery delivered to the door and they have pretty much matched the cost of glow fuel. I was hoping for more cycles but didn't get them. Now for the search for a good replacement battery. The good news is that batteries have come down in price over the last 2 years. BTW, the plane still looks brand new and flys very well. Wait till you see what I'm building for next year!

Michael Duffy · « **Reply #174 on:** November 04, 2010, 06:35:40 PM »

I am building an E-Primary Force. Would it be possible for you to post some pictures of the nose and how everything was mounted. I am trying to design something, but a proven design would definately help.

Thank You

Michael Duffy

Crist Rigotti · « **Reply #175 on:** November 05, 2010, 08:06:38 AM »

Look in pages 1, 2, 3, of this thread. I posted plenty of pictures of the front end.

John Rist · « **Reply #176 on:** November 06, 2010, 09:18:40 AM »

Quote from: Crist Rigotti 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!

I will be needing some 4S 3400mha battries for my La-5 profile scale project. In an earlier photo the battries look "no-name". Can you tell me a little more about them? $, source etc.

Crist Rigotti · « **Reply #177 on:** November 06, 2010, 10:43:42 AM »

Quote from: John Rist on November 06, 2010, 09:18:40 AM

I will be needing some 4S 3400mha battries for my La-5 profile scale project. In an earlier photo the battries look "no-name". Can you tell me a little more about them? $, source etc.

I had them made up for me from PolyNoOne. They made them for me and they came out to 313 grams. 11 ounces.
Here is a forum link to the discussion;
http://www.rcgroups.com/forums/showthread.php?t=908662&highlight=pno

I'm not sure they are in business any more.

Crist Rigotti · « **Reply #178 on:** July 14, 2011, 01:26:50 PM »

Quote from: Crist Rigotti on November 04, 2010, 09:10:29 AM

Final note for the airplane. The 4 battery packs gave me a little over 60 cycles each over the 2 years I have had the plane. The batteries are now getting "soft" and are starting to puff slightly. They have been retired. I paid about $65 for each battery delivered to the door and they have pretty much matched the cost of glow fuel. I was hoping for more cycles but didn't get them. Now for the search for a good replacement battery. The good news is that batteries have come down in price over the last 2 years. BTW, the plane still looks brand new and flys very well. Wait till you see what I'm building for next year!

I fitted the plane with my Thunder Power G6 V4 5S 2700mah Pro Lite batteries and a 650kv motor. While the kv is a little low, should be around 710 or so, the airplane has a new lease on life. As a matter of fact, I'm going to use the plane for practice to rid myself of some undesriable hand movements/placement while flying the schedule.

I also found out at this year's NATS that running the governor gain all the way up works really well. I'll make that change too.

It is still a very good flying plane!

Crist Rigotti · « **Reply #179 on:** September 25, 2012, 10:19:40 AM »

Update on the Resolve. I've been flying this plane in Profile at this year's contests. It has been fitted with a Cobra 2826-760Kv motor. I replaced the shaft so I have some shaft extending out of the back of the motor for the rear support bearing. I'm still using the TP G6 5S 2700mah batteries. I'm using about 1850mah to 2000mah depending on wind and lap speed. I like the 62 foot lines too. Still my "go to" plane. Stiill looks very new.

Dan Bregar · « **Reply #180 on:** September 27, 2012, 05:10:24 PM »

What prop are you turning on the Cobra 2826 ?

Crist Rigotti · « **Reply #181 on:** September 27, 2012, 09:39:17 PM »

Quote from: Dan Bregar on September 27, 2012, 05:10:24 PM

What prop are you turning on the Cobra 2826 ?

A APC 13-4.5EP cut down to 12". Thick hub version.

Bill Little · « **Reply #182 on:** October 01, 2012, 01:40:36 PM »

HI Crist,

Sounds like you have really gotten a lot of things sorted out with this model. It is great to have a model that flies extremely well and you can concentrate on other things like flying the maneuvers!

Another good looking one is your tricycle LG that you are now building. It should be a good one!

BIG Bear
RNMM/AMM

Crist Rigotti · « **Reply #183 on:** October 01, 2012, 05:26:57 PM »

Quote from: Bill Little on October 01, 2012, 01:40:36 PM

HI Crist,

Sounds like you have really gotten a lot of things sorted out with this model. It is great to have a model that flies extremely well and you can concentrate on other things like flying the maneuvers!

Another good looking one is your tricycle LG that you are now building. It should be a good one!

BIG Bear
RNMM/AMM

Thanks Bill. Yeah, 2009 570 profile AKA Resolve EP is my goto plane.

Crist Rigotti · « **Reply #184 on:** July 27, 2016, 09:38:13 AM »

Just a short update on this plane.

A few weeks ago I decided to extend the nose and remount the motor. I had some lead weight buried in the nose and wanted a more forward CG than before. Also I switched from the Cobra 2826 to the Cobra 3515/18 740Kv motor. This is the same motor I'm using in my 2016 Agneda plane.

As a matter of fact. it uses the exact same set up as the Agenda.

I was out this morning at Hobby Park. What a nice morning. About 75 to 80 degrees and a 4 mph breeze from the south. I put in 6 good flights!

john e. holliday · « **Reply #185 on:** July 27, 2016, 10:36:49 AM »

Was the sun up yet?

Sounds like you are getting the plane working. My self haven't been able to go fly because granddaughter need the car for work. Also temps in the high 90's and higher with gusty winds.