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E-Flite Diamante 25e

Old 01-04-2008, 11:10 PM
  #26  
Alpea42
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I just had a really cool inspiration.Should wing loading end up higher than the real deal I'm thinking of making a second wing, mounting the carabines to my forward fuse box and making a Diamante Bipe. What the heck I already have a Mono Diamante why not a Bipe . A slower flyer that has the acrobatic capabilities of the real deal is what us old guys need.
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Old 01-07-2008, 04:43 AM
  #27  
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I've finished the fuselage it weighs 9 oz. unpainted .Working on the hollow wing.Using the FFF with the fold as my leading edge seems like a cool idea so far.Gonna use a dowel as my spar.Can't afford a 48" C F rod it would need to be 1/4 ".This is a cheap foamy.Still hoping for an airframe of 2 lbs.
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Old 01-09-2008, 08:05 PM
  #28  
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Originally Posted by Alpea42 View Post
i knock the gear off my diamante 1 out of 3 landings beefed up the mounting plate w/ 1/4 in ply and land a lot faster
I've built about 12 ARF's over the past couple of years, and repaired a few for others. In my opinion, the weakest part of any ARF is the landing gear. And no matter what manufacturer I have bought from. I'd rather not mention names, but they all seem to build as if every landing is going to be feather light. And perhaps for their highly skilled test pilots, this is the case.

But in the real world of grass landing strips, and landings by average flyers, you better beef up the landing gear area with Triangle stock and slo dry epoxy before you fly (land).

Some of the kits I've gotten from the most reputable manufacturers, have had an addendum to the instructions advising doing just that.
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Old 01-09-2008, 08:13 PM
  #29  
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E Flight has a really cool video of this plane in an experts hands(slow roll right on the deck screaming flybys k.e.with roll to inverted) you know,the stuff we all do LOL.And then he does a feather light landing.
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Old 01-12-2008, 09:37 AM
  #30  
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Got me a 4s lipo at the AMA show today .Just put the E -Flight plug on it and gonna fly it tomorrow as the performance demon they suggest.Don't think I'll do any slow rolls at 3 ft AGL like on the video.The only bad part is I've had to economize and I could only justify a 2050 ma 4s20c battery and it's a chinese bargain one at 60$ show price.That low of a mh rating will prob. only give a 10 min flight.But I was only getting 8 min. on a 2100 3s16c.I'll see tomorrow
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Old 01-13-2008, 02:34 PM
  #31  
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Didn't fly it yesterday goin for the 2nd maiden today.The 870 X 3.3 additional RPM. the motor is now putting out (on a 4 cell batt.) caused an increased vibration from my warped plastic spinner.It was so bad I was gonna ground it but luckily I had an an old good quality metal back plated one in my nitro stuff that was the same size.The bigger batt. and heavier spinner added 5 oz. to aug it now weighs 3 lb. 10 oz.
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Old 01-14-2008, 01:25 AM
  #32  
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Well flight #20 went safely.Unfortunately I'm new to 4 cell lipo's.So it says 14.8 v on the package I think thats a full charge Right? Wrong Didn't wait for the end logo to pop up on my Triton charger figured 15v is good Right? pre-flight check found aileron servos reversed and full flaperons deployed, fixed that ,was pleasantly suprised at power increase of 870X3.3 extra RPMs.And then 3 min. into flight was puzzelled by lack of throttle response.Bouncy emergency one piece landing on the runway (could be worse)O
K lets check this out.11.5 v no load vom reading ,60 pro ESC surging motor, showing low voltage cutoff.Hmmm come to find out full charge on a 4 cell should be closer to 16.75v Live and Learn .Here's some build pics of my fff Diamante 25 #ll ripoff
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Old 01-14-2008, 01:35 AM
  #33  
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Yup!! My 4S 20C packs show 16.8 or I don't go up.

But then again I've seen the Gas Guys go up with half a tank of gas, and wonder wha'hoppen when they go deadstick in half the time of a normal flight.

At least with Electric we have a bit left if we are a bit short on approach after low Voltage cutoff. If we remember to go to low throttle and glide in close.

My Diamante is sitting quietly in the box in the closet waiting for me to put ittogether.
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Old 01-14-2008, 02:05 AM
  #34  
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What do you think of my copy cat effort.And thanks for confirming what I almost learned the hard way
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Old 01-18-2008, 12:39 AM
  #35  
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Woo Hoo Beautiful So. Ca. day here today .Had to go fly, sunshine, no wind here,80 degrees.Put flight # 22 on her with no Gremlins.Well did run off the road we use for a runway at the end of my landing so I had a short walk of shame.But nothing serious put her back on the road and taxied to the pits.7 min flight starting v.=16.75 ending v.=15.1 and I know the ESC don't shut down till it reaches 11.9 so I didn't even use 1/2 the available power.Maybe I can look forward to 15 min. flight times.Yippee.Plus the wires and the battery weren't even warm after landing.I did 5 rolls 3 loops 8, 1/2 cuban 8 turn arounds and a verticle climb with a roll and 2 stall turns.The best part is I was finally able to relax a little.This flight I would call a total success.Diamantes rock your socks.I did the calculations for prop speed yesterday and not supriseingly it works out to 103 MPH.The field I fly on I measured the other day and came up with 1 tenth of a mile square.So at 60 MPH it would take 6 sec. to go 1/10 th a mile.90 MPH would take 4.5 sec.and that sounds about right .I dont know I just know it's FAST!!!!!

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Old 03-26-2008, 11:08 AM
  #36  
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I guess not too many Watt Flyers go in for this kinda high performance plane.Too bad they are awesome flyers.Put a 14x7 prop on it for fun.It climbs verticle at half throttle but I think flight time will suffer.Up to 28 flights now.
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Old 07-30-2008, 03:05 PM
  #37  
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Well, I just picked one up and you guys are totally right about the landing gear. I bough it used and unfortunately have to do that repair. I going to add some 3/16" ply in that area and cut a new plate from 1/4", and attach to the 3/16". The other part is the firewall. The other person used a 25 and I'm adding a Turnigy C4250-700 so as you might imagine, things don't line up. New face on the Firewall and new Blind Nuts should get me in the air in about a week.
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Old 07-30-2008, 03:17 PM
  #38  
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Originally Posted by Alpea42 View Post
I guess not too many Watt Flyers go in for this kinda high performance plane.Too bad they are awesome flyers.Put a 14x7 prop on it for fun.It climbs verticle at half throttle but I think flight time will suffer.Up to 28 flights now.
Hey Bud, What servos did you put in yours. We are putting my boys together now and am about ready to out them in. Haven't decided on which ones yet though.
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Old 07-30-2008, 06:14 PM
  #39  
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Hi Bill ,I went with the Hitec Mighty Minni HS 225 MGs. They were expensive about $28.95 I think but they do the job. With out altering the mounting holes much if I remember right. Standard Hitecs were too large.The plane is quick so middle quality servos are called for.It's almost a good idea to glass that bottom fuse area where the L G go if you think you can match that Mono-Coat red with some paint. But if you keep speed up on landing and don't bounce it they'll hold up. The wooden mounting piece is only 1/8 th or 3/16ths ply and it rips out even if you gently stall bounce a landing.Cuz the plane ends up close to 4 pounds http://h1070012.hobbyshopnow.com/pro...prod=HRC32225S The HS 225 that's not metal geared is $20.

Last edited by Alpea42; 07-30-2008 at 07:04 PM.
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Old 07-30-2008, 06:49 PM
  #40  
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Yeah I was reading this thread and some others as well, will be looking at beefing that area up some.

I was thinking of using the JR servos the manual calls for or the Hitec's you are using. Definitely want the good stuff in it.
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Old 07-30-2008, 09:22 PM
  #41  
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The airfoil isn't real thick it does have a sorta dihedral underside, it slows down pretty predictable .That's why you don't realize it's about to stall on landing approach, then at stall the nose drops (not the wing tips) and the 4 lb weight rips the L G mounting ply out. You guys will handle it no prob I'm sure.

Last edited by Alpea42; 07-30-2008 at 09:38 PM.
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Old 07-30-2008, 09:30 PM
  #42  
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cool! thanks for the tip.
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Old 07-30-2008, 10:14 PM
  #43  
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After lots of research with 20 cell nicad pack powered models a few years back, I realised that when it comes to UC mounting, Liteply might be attractive for building BARF models cheap, but it's no good whatsoever for seriously mounting an undercarriage.

My favourite method, given that my usual custom design/build service uses it all the time, is 1/2" x 3/4" alloy "L" section from a local hardware store. The 3/4" face is epoxied to the fuselage inner faces, placed so the UC can be bolted to about its mid-point. Most of my models are made of Birch ply in that neck of the woods, but with a BARF you're stuck with whatever.

Sounds good that the Diamante doesn't tipstall at slow speeds, you'd all be out buying even more of them But Four Pounds for a model that size? If I built one like that with 4S and got to three and half, I'd burn it before anyone found out I'd slipped so bad.

Love Hitec 225s - all my larger (my idea of 'larger' anyway!) have them, no problems at all. That includes my ten year old Four Star, which used to fly at nearly 6lb - amazing what a 34ounce battery does for your RTF weight.

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Old 07-31-2008, 12:24 AM
  #44  
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Ah come on Deric the power system weighs almost 2 lbs. LOL It's got a 52" big fat cord ,thin ribbed wing
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Old 07-31-2008, 02:54 AM
  #45  
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And it has the advantage that everyone knows you bought 'that kit' - even if it's not FOM (Flavour Of the Moment) this month...

Whereas mine are usually the only one around

Another minus - mine tend to have covering jobs that are somewhat lacking in tidyness. Maybe that I know the person who built my mainspars and other such internal actually cares about what happens in flight counts for a little?

I used to refer to my wing width as 'chord' - has something else changed and I missed it ?

My last pattern-ish model had a 54" span wing, around 600 square inches, and weighed about 13 ounces with a brace of Hitec 225s. The complete model weighed just over 5lbs with a 16 x 3300mA NiMh pack - what am I doing wrong?

Of course, the Diamante succeeded admirably in one respect - you bought it ...

Sorry about the punctuation and capitalisation, if it makes it hard for you to follow

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(Note spelling)
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Old 07-31-2008, 03:07 AM
  #46  
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Originally Posted by Dereck View Post
And it has the advantage that everyone knows you bought 'that kit' - even if it's not FOM (Flavour Of the Moment) this month...

Whereas mine are usually the only one around

Another minus - mine tend to have covering jobs that are somewhat lacking in tidyness. Maybe that I know the person who built my mainspars and other such internal actually cares about what happens in flight counts for a little?

I used to refer to my wing width as 'chord' - has something else changed and I missed it ?

My last pattern-ish model had a 54" span wing, around 600 square inches, and weighed about 13 ounces with a brace of Hitec 225s. The complete model weighed just over 5lbs with a 16 x 3300mA NiMh pack - what am I doing wrong?

Of course, the Diamante succeeded admirably in one respect - you bought it ...

Sorry about the punctuation and capitalisation, if it makes it hard for you to follow

Regards

Dereck
(Note spelling)
see now, thig difference in our is that everyone will know Mason WON it! not bought it!

There is something to be said for unique aircraft though, one reason I enjoy flying my C-130, It's the only one I've ever seen like it...
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Old 07-31-2008, 05:21 PM
  #47  
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De-Reck-Neck LOL OK, Chord or Cord whatever Rick or Reck don't be so hotty toddy on other peoples English Language skills or lack of same . That's not what these forums are about man. I made fun of a guy once, and he came back with a horrible story of a head on crash on his M.C. into a truck that left him brain damaged.I felt horrible after hearing his story. My brain damage is all self induced . You do seem to know your "patterrn-ish" planes , show us some pictures.
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Old 08-25-2008, 11:29 PM
  #48  
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My Diamante has an AXI 2826/12 and a 13X6.5 APCe prop, Hitec HS85MG servos. I fly it with either a 3 cell 3200 mah or 4 cell 3850 pack. There is plenty of performance with each, but the 4 cell pack has a bit more oomph at the upper end. I fly 8 minutes with the 3 cell and 12 with the 4 cell.

Yep, the LG is the weak point. I flew it about 20 times with no problem, but on the next one, I landed fast, but smooth with no impact to speak of. The LG tore out the bottom. Needless to say, I beefed the LG mount up and so far, so good. This is a great airplane which will not stall by the way. However, I have to say that my Brio 10 flies better except for the tendency to snap.
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Old 01-15-2009, 11:41 PM
  #49  
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I fly my Diamante with the following setup:

AXI 2826/10
13X6.5 ACPe
3 cell 3200 and sometimes a 4 cell 3850 lipo
Phoenix 45
Separate 4 cell RX pack
It has flown on 72 mhz and now Spektrum AR7000
Wattmeter indicates 500-550 watts.

Performance is outstanding. With the 3850 pack, vertical is unlimited. With the 3200 pack, it still flies well. I met a guy who wasn't too happy with his Eflite Power 32, but when he saw mine fly, he was sold on the AXI motor.
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Old 01-16-2009, 05:08 PM
  #50  
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I have about 30 flights on mine during last summer. And it is a great plane or just toodling around and doing some basic manuevers. I'm not into 3D, so the 2820 with the 11 inch prop on 3S-2100 lipos suits my flying perfectly. 6-8 minutes with plenty of reserve to make a couple of passes if needed.

As to AXI Motors, they are the only motors I use. I have one on my old timer Viking, and it is over 8 years on the 14 year old plane, and still going strong. Might cost a bit more in the beginning, but they last, and give good power.


Looking forward to getting some better weather to get back out and get another batch of flights
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