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Boomerang Sprint Build Thread!

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Old 04-19-2009, 03:32 PM
  #626
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Default RE: Boomerang Sprint Build Thread!

Where did you get those awesome flap hinges???
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Old 04-20-2009, 03:40 PM
  #627
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Default RE: Boomerang Sprint Build Thread!

The hinges is bought at www.lindinger.at
LANDEKLAPPEN-SCHARNIERE 33/9MM 5STK.MBL
Bestellnummer: 54954,

They do the work fine.

K-A
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Old 04-20-2009, 04:05 PM
  #628
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Default RE: Boomerang Sprint Build Thread!

K-A
Hi. I am sorry but I have sent two emails now and both times they bounce back. I think we have a communication issue. Maybe we can communicate via RCU to arrange a replacement canopy for you? Although I did tell Alan today that I cant get in touch with you and that he should send you a replacement right away.
Regards Al
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Old 04-21-2009, 11:42 AM
  #629
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Default RE: Boomerang Sprint Build Thread!

Thanks, Allan has already sent a replacement today, Brg K-A
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Old 04-25-2009, 07:45 AM
  #630
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Default RE: Boomerang Sprint Build Thread!

Can anyone show me their Install of a falcon in the sprint. I know there are some
flying with this engine, but have only seen installs with p80,p70 & p60's so far.
I hope to order mine this week, and I just want to see how far back/forward they were
mounted.
Thanks
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Old 04-25-2009, 10:03 AM
  #631
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Default RE: Boomerang Sprint Build Thread!

Sprint - falcon install pics.

I will when i fond the camera... it was here now it gone... I can tell you right off the bat that I have my starter motor right up the wood cross frame with the starter wires bent at a 90 degree angle.

Falcon print combo.... A number one!
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Old 04-27-2009, 02:10 PM
  #632
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Default RE: Boomerang Sprint Build Thread!

Falcon is being shipped today!!!! once the engine is in All I have to do is double check some throws
and the CG and its ready to go.
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Old 04-28-2009, 08:44 PM
  #633
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Default RE: Boomerang Sprint Build Thread!

here you go...my falcon install.....
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Old 04-29-2009, 05:59 AM
  #634
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Default RE: Boomerang Sprint Build Thread!

and smoke...NICE. Thanks for the pictures
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Old 05-02-2009, 10:41 PM
  #635
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Default RE: Boomerang Sprint Build Thread!

First time posting here. I have been at the other website (under a different name) and flying EDFs. Decided to take the step into turbines with the Sprint. Great plane, and Patricia has been the best. I also appreciated Allen taking the time to talk to me about the plane while he was in the States. The airframe and main gear are complete. I am installing the nose gear right now, then I am ready to put everything together. I have a question. I have the Dreamworks gear, and I am trying to get the spacers right to center the wheel between the trailing arm for the nose gear. Can someone post a picture of what they did, and did you use the supplied nylon, or did you substitute something else. It just seems I am getting too much slop. Thanks
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Old 05-03-2009, 02:17 PM
  #636
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Default RE: Boomerang Sprint Build Thread!

Anyone else using the Sullivan 3.8L tank in their Sprint? I've found that during certain manouvers, the clunk doubles back on itself and gets stuck up the front of the tank. Can get away with this happening on a full tank of fuel but past 1/2 the result will be a flameout.

I'm using tygon inside my main tank, was wondering about inserting brass tube down the tygon pretty much the entire length of the tank and leave just enough to 'dangle' and reach top and bottom of the tank.

I don't think the pipe in the tube will restrict fuel flow enough to cause a problem.....

What say ye?
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Old 05-03-2009, 02:22 PM
  #637
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Default RE: Boomerang Sprint Build Thread!

on any long tank i use brass tube for part of the line, i don't put it inside the Tygon just replace a section of it.
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Old 05-03-2009, 03:04 PM
  #638
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Default RE: Boomerang Sprint Build Thread!

Dave

Ditto on the above, you will end up with fuel line, brass tube, fuel line, the section of the brass tube will prevent the line from bending foward.
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Old 05-03-2009, 05:07 PM
  #639
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Default RE: Boomerang Sprint Build Thread!

Thanks guys. A simple solution! Had the tank in my hands but brain wouldn't engage to find a solution.
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Old 05-05-2009, 01:57 PM
  #640
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Default RE: Boomerang Sprint Build Thread!

Instaleld the Falcon the other day.WOW it's awsome.. LT Dorn1youre right I am gonna love this set it.
I still have to balance yet I needed to order a flat ecu battery to get it into the nose where I wanted it to go to balance.
I have a question does anyone have or make wing bags for the sprint???? wahts are you guys using to transport the wings in?
I don't realy want them bouncing around the trailer while I am on the way to the field.

here is a rough install picture
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Old 05-05-2009, 06:30 PM
  #641
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Default RE: Boomerang Sprint Build Thread!

hello you gave me this idea on the screenin the engine bay. i did the same . also using fod screen. i am going to fly again this weekend with my new p70 onboard. havent flown with the screen yet. did you notice anything differant with the screen. i wouldnt think this would coause an issue but was curious before i flew it.... thanks
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Old 05-05-2009, 08:00 PM
  #642
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Default RE: Boomerang Sprint Build Thread!

Sorry to say but I don't know I haven't flown it yet.... I just got the engine the other day.
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Old 05-06-2009, 02:40 AM
  #643
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Default RE: Boomerang Sprint Build Thread!

This is my FOD protection....

Does anyone else's Sprint make a howling/low pitch whistling noise at full speed? I'm wondering if it's an effect of the holes in the wings for the retaining bolts, It doesn't bother me, as it sounds great!
My sprint has been grounded for a few weeks. Had a Nicd short which melted through fuel lines soaking the internals. After a refit, I'm hoping I've got my CG spot on now. I've moved both rx and ecu packs back. I've now opted for just one rx pack.

D
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Old 05-06-2009, 03:01 AM
  #644
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Default RE: Boomerang Sprint Build Thread!


Quote:
ORIGINAL: Dave03B

This is my FOD protection....

Does anyone else's Sprint make a howling/low pitch whistling noise at full speed? I'm wondering if it's an effect of the holes in the wings for the retaining bolts, It doesn't bother me, as it sounds great!
My sprint has been grounded for a few weeks. Had a Nicd short which melted through fuel lines soaking the internals. After a refit, I'm hoping I've got my CG spot on now. I've moved both rx and ecu packs back. I've now opted for just one rx pack.

D

do yourself a favour , it is only 15 ukp for a Fod screen..
a compressor and repair is over 300 ukp..
you will soon or later vacuum something from your fuselage...
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Old 05-06-2009, 04:31 AM
  #645
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Default RE: Boomerang Sprint Build Thread!

Quote:
Does anyone else's Sprint make a howling/low pitch whistling noise at full speed?
Mine makes the same sound. Could it be the inlet ducts?
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Old 05-06-2009, 12:46 PM
  #646
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Default RE: Boomerang Sprint Build Thread!

Good shout Sandor, I-FOD, hadn't put much emphasis on that occurance....
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Old 05-06-2009, 03:16 PM
  #647
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Default RE: Boomerang Sprint Build Thread!

mine makes that whisling sound also at top speed. i guess at 190 mph anything will make noises hahahaha...
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Old 05-08-2009, 08:36 PM
  #648
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Default RE: Boomerang Sprint Build Thread!

well flew my sprint today with my new p70. awesome awesome... went perfect. flew only twice due to getting dark.. was very strong headwind today. man i only needed to use the first degree of flaps for landing today. i went for the full flap and noticed wow this thing literaly stopped in its tracks. anyway cool plane and hope to fly allday tomorrow....
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Old 05-10-2009, 12:52 PM
  #649
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Default RE: Boomerang Sprint Build Thread!

Has anyone noticed a difference when balancing using the "wings off method" and the "wings on" measurement?
I'm sure i'm not missing anything but if i balance to the CG in the manual with the wings on, then using the "wings off" method (balancing on the main spar) it seems very tail heavy.
Would this explain why many people seem to report that they have had to add a lot of weight in the nose, then have to take almost all of it out, because they are using the "balance without wings on" method??

Hope this makes sense

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Old 05-10-2009, 02:28 PM
  #650
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Default RE: Boomerang Sprint Build Thread!

I have the same question. I am also staring to balance mine now. I have 2 2000mah nimh sub C's in the nose and the
4200mah lith ion ecu battery in the center of the tray and it seems to balanced right there. That is the 250mm from trailing edge wings on method.
I haven't tried the spar method yet. I was never too keen on balancing a plane that way.
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