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HelicopterScale Model RC Helicopters Docs  eApache build
03-21-2009 09:16 PM  8 years agoPost 141
troadus

rrNovice

Tacoma, WA

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Dogwood----good to see you back. Now what Issues are you fighting with. I've build the Cobra and now the Apache. I started to plank the top and bottom and will be starting the tail housing soon. Yours is looking good, nice to see your post again....Leon

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03-21-2009 09:24 PM  8 years agoPost 142
DogWood

rrApprentice

Bend, OR. USA

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Leon, If you look a the picture the side sheeting should have been the same length as the assembly - its longer.

also there were no notches laser cut in the sheet, not that they would have lined up anyway

all really simple things to deal with.

Oh if you haven't already, you'll want to pull down the Apache 50 manual as Dr. Tim has made some updates in it that aren't in the eApache manual yet, clears somethings up a bit.

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03-22-2009 03:42 PM  8 years agoPost 143
DogWoodrrApprentice - Bend, OR. USA - My Posts: All  Forum  Topic

trimmed the trailing edge tail cover

now to do the trickier leading edge part

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03-22-2009 05:16 PM  8 years agoPost 144
DogWoodrrApprentice - Bend, OR. USA - My Posts: All  Forum  Topic

started on the leading edge tail cover, bit trickier as there is no pre-cut edge to go by, needed to line it up with the trailing edge and cut to shape.

Quickly discovered the 2 side pieces where to narrow for their intended purpose according to the photos.

thinking that I better double check everything I mounted the trailing edge and then the leading edge pieces - need to bring the leading edge sheeting back more than I originally thought.

Cut 2 new side sheets out of scrap, so far so good (long way to go though)

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03-23-2009 06:20 PM  8 years agoPost 145
DogWoodrrApprentice - Bend, OR. USA - My Posts: All  Forum  Topic

tail cover coming along

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03-28-2009 08:40 PM  8 years agoPost 146
Palleaon

rrNovice

Australia

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Hi .. Ive been reading ur thread on this project and just to let u know Ive also done this project using a Raptor 620e and have been flying it now for about 4 months weeding out all the bugs in the system.. Similar to u I did have troubles getting the fiberglass really smooth for a final paint and shortly will be sanding it all back for a retry. For the tail I used a flexi drive system and made some minor changes to the design for strength.. If your interested in photos/video just let me know.. Im keen to see ur project finished as ur the only one I know of on the face of the planet who is doing this and in electric..

Cheers and good luck.. It's not an easy project..

Palleaon
E Apache raptor 620e 12s A123
Ecureuil Trex 600e 8s A123
Agusta A109 Hurricane 550e 8s A123 (project)
Raptor 50n still deciding

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03-28-2009 09:43 PM  8 years agoPost 147
DogWoodrrApprentice - Bend, OR. USA - My Posts: All  Forum  Topic

Palleaon, would love to see pics of your bird. Feel free to post them.

what kind of flight times are you getting on 12sA123's?

Going to be awhile before I'm finished, only able to work on it once in awhile.

Plus I want to add a bit more detail

I think I might just about have the glass thing figured out we'll see on the next piece I do.

tail cover is moving along

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03-29-2009 12:46 AM  8 years agoPost 148
DogWoodrrApprentice - Bend, OR. USA - My Posts: All  Forum  Topic

started to shape the rear tail cover

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03-29-2009 03:55 AM  8 years agoPost 149
DogWoodrrApprentice - Bend, OR. USA - My Posts: All  Forum  Topic

tail cover is shaping up nicely (pun intended)
Ended up making my own tail cap - couldn't find the one from the kit- probably buried under something - just as well as I wanted to modify it any way

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03-30-2009 05:03 AM  8 years agoPost 150
Palleaon

rrNovice

Australia

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Here is a couple of pics of my E apache.. ITs flying but I agree it still has some work to do.. I havent shaped the tail or put on the tail shaft cover until I know this thing is flying well enough not to have to open up the back end to fix it.. Some of the things I did different after I found out the hard way was to
1. made a metal hinge bracket for the tail elevator the ply brace dosent hold very well
2. replaced the plastic spring loaded landing gear with brass tubing.. The plastic ones broke on mine first hard landing
3. Using 104mm tail rotor blades.. the standard ones that come with the 620e are no where near strong enough
4. mounted the tail on the starboard side and ran the control line up the back..
5. Took 10mm off the top of the tail to reduce tail rotor wash
6. Added a rate mode gyro to the tail elevator and works independant to the main cyclic elevator.. ie forward flight trim
7 using 620mm semi-symetric blades.. they are a big help using stock 3D blades will make flying difficult.. the semi lift very easy and even more lift in either a breeze or forward flight.
8. Using 12s A123 battery built into the model.. the packs dont come out and are charged in the heli in about 15 mins.. Atm Im getting 4 mins of flight time.. it isnt much but This machine weighs 5kg where the mechanics are designed to throw around a heli that weighs only 2.5kg

YEs I know the heli looks a bit shabby atm but I do plan to smooth it all back and start again with a much nicer finish.. Atm its all test flights and working out the bugs..

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04-05-2009 12:24 AM  8 years agoPost 151
DogWoodrrApprentice - Bend, OR. USA - My Posts: All  Forum  Topic

Glassing the tail cover

Dropped my transmission housing on the concrete while sanding it for the umpteenth time
Put a nice rough dent in the corner - re-thinking how "perfect" I want to make this, shooting for "nice" now LOL

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04-05-2009 03:23 AM  8 years agoPost 152
DogWoodrrApprentice - Bend, OR. USA - My Posts: All  Forum  Topic

Finally finished cross sheeting the main fuselage.

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04-11-2009 10:45 PM  8 years agoPost 153
DogWoodrrApprentice - Bend, OR. USA - My Posts: All  Forum  Topic

not much progress this week, hope to work on it a bit tomorrow

Did get my Servo's this week though

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04-12-2009 05:27 PM  8 years agoPost 154
DogWoodrrApprentice - Bend, OR. USA - My Posts: All  Forum  Topic

Got started on shaping the rear of the fuselage

notice that the leading edge piece of the vertical fin is crooked - need to pull it off and try again

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04-13-2009 04:13 AM  8 years agoPost 155
DogWoodrrApprentice - Bend, OR. USA - My Posts: All  Forum  Topic

trying my hand at riveting - starting with a smaller part - the horizontal tail fin.

so far it's been fairly easy and hard at the same time.
I'm using the Starwood rivet kit - I like it.

If the rivets are still wet and you made a big goof- just wipe them off with a damp cloth - if their dry you can simply scrap them off with a finger nail - Great for fixing those "drifters"

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04-15-2009 05:21 PM  8 years agoPost 156
patsyw26

rrNovice

Oklahoma

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Thanks

I am staying on--to addicted!

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05-03-2009 02:08 AM  8 years agoPost 157
DogWoodrrApprentice - Bend, OR. USA - My Posts: All  Forum  Topic

things have slowed a bit on the build, between the baby and a new position at work I have very little time to work on it.

was able to complete the rivet detail on the horizontal tail fin

sorry for the crappy photo

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05-03-2009 11:49 PM  8 years agoPost 158
DogWoodrrApprentice - Bend, OR. USA - My Posts: All  Forum  Topic

Squeezed in a bit of sanding, got the second coat of epoxy on the vertical fin sanded down a bit



Had to add a bit of glass to the inside of the forward piece as I cracked the balsa guide

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05-04-2009 03:19 AM  8 years agoPost 159
jack726

rrVeteran

Cerritos California

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I just am in the process of finishing the 50 size Apache with an Align 600. I had a problem getting the Align tail in the original design; I had to redesign it. Some changes were required to make room for the battery.

I had a few problems with the kit. First there were 10 parts missing; I got tired of driving to the LHS. Many of the parts were numbered wrong or had no number on them. Seems like they are referring to the prototype kits. Installing the tail drive in a T-Rex required some machining, so I had to spend $1000. on a lathe and mill, which is sure to cost me more as it will probably turn into another hobby.

The big disaster was the resin and cloth finish. I had not finished a model in resin for 35 years, so when a friend gave me some professional finishing resin, I took him up on it. Two weeks now and it has not yet dries. Yes I did follow the instructions. I mixed some alcohol with it to thin it down. This was not the problem; it just would not dry. This led me to a great discovery; KILZ; I sprayed this on and let it dry overnight. In the morning it was completely sand-able. One coat almost filled all the grain in the balsa; three coats made it as smooth as fiberglass. i will never use glass and cloth again, as this is so easy to sand.

All and all, it was a very good kit, except for the above mentioned problems.

I flew it in its primer, without all the dangles attached; it sure looks good in the air.

Jack

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05-04-2009 03:49 AM  8 years agoPost 160
DogWood

rrApprentice

Bend, OR. USA

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Sorry to hear about the kit issues Jack.

Unfortunately the manual and kits aren't always in sync.

And I got really bad news for you, the mill and lathe are a very expensive and addictive hobby! the "I got to have that" tooling will get you

I have a MIll that I've converted to CNC and a manual lathe.

Might have to check out the KILZ some time, sounds good.

Got any pictures of your tail mod? was thinking of a 50 size and align 600 as a next project.

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