Walkera 4#3 HH-65 USCG Dauphin--VIDEO 4 Blade head works page6 - RC Groups
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Apr 29, 2008, 08:36 PM
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stevel48's Avatar
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Walkera 4#3 HH-65 USCG Dauphin--VIDEO 4 Blade head works page6


So I love the HH-65 USCG Dauphin helicopter and I love my walkera 4#3 so why not put them together. I will be using the 4#3 brushless set up with the Losi. I purchased a trumpeter 1:48 dauphin kit and off i went. So the summary is that I cut down the 4#3 to bare bones.

I removed the tail boom, the landing skid, battery tray, moved the right hand servo to the inner servo spot and cut down the servo holder and frame where the sevo was , removed rx covering and will remove the portion of the frame where the rx sat. The 4#3 is now down to 18 grams minus the rx and the motor with a steel flybar. The Rx and motor will bing it up to 30 grams. The heli body is 30 grams finished as well.
Add the battery and account for any unknown and it should be a 70 gram heli. From what I understand it will still fly at 70 but sluggishly and I'm ok with that. i just want a small scale heli to hover and fly slowly around. I'm sure it will go over 70 grams when its all said and done(i have a micro light kit too) but it's a heck of a fun project.


here is what another board member had to say about the heli weight after the brushless mod.

Minibichus --"It is currently running 1 flightpower EVO20 300 mAh 7.4v cell. Its got so much power that it can lift a 49 grams 1000 mAh 7.4 lipo Current combat weight, RTF is ~69 grams with a 300mAh battery. That puts it ~20 grams over what it weighted stock"

There will be nay-sayers I know but it's just a heli and a fun project. lets see if it flies.

So far so cool
Last edited by stevel48; May 17, 2008 at 07:14 PM.
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Apr 29, 2008, 09:05 PM
master 4#3
if you can mount the components right and go brushless with the losi motor i bet it will fly.
Apr 29, 2008, 09:11 PM
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stevel48's Avatar
thats the plan. I have some carbon fiber rod to mount the 4#3 chassis inside.
Apr 29, 2008, 09:53 PM
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stevel48's Avatar
if it all fails i'll vacuum form it.
Apr 30, 2008, 04:45 AM
Micro-Heli-Concepts
jasonjetski's Avatar
Looking good Steve,
would a dremel be any use to grind off bit by bit any unneeded material inside the fuslage?
I think you could take a gram of here and there easily.
Good luck,I will keep an eye on your progress.
Jason
Apr 30, 2008, 06:22 AM
Fly, fix, repeat
oobly's Avatar
Quote:
Originally Posted by stevel48
if it all fails i'll vacuum form it.
I vote for this option You can probably get the body down to around 4g, but you will probably have to use some sort of tail boom since the moulded plastic probably won't have enough strength to support the tail unit and handle the forces generated. You will have to mold the tail fin bits separately or simply use the original plastic bits on the moulded body.

Looking good otherwise. I like scale helis and am planning an AS350 brushless 4#3 myself. That way I don't have to worry about wheels. I think I can bend the stock landing gear to suit.

-Oobly
Apr 30, 2008, 08:15 AM
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stevel48's Avatar
Quote:
Originally Posted by jasonjetski
Looking good Steve,
would a dremel be any use to grind off bit by bit any unneeded material inside the fuslage?
I think you could take a gram of here and there easily.
Good luck,I will keep an eye on your progress.
Jason

for sure. I can trim off a gram easy with the dremel.
Apr 30, 2008, 08:16 AM
Registered User
stevel48's Avatar
Quote:
Originally Posted by oobly
I vote for this option You can probably get the body down to around 4g, but you will probably have to use some sort of tail boom since the moulded plastic probably won't have enough strength to support the tail unit and handle the forces generated.
-Oobly
If i end up doing the vacuum form yes, it will need the tail boom for sure. the only bummer about the vacuum form is that you lose a lot of detail
Apr 30, 2008, 09:41 AM
Fly, fix, repeat
oobly's Avatar
Quote:
Originally Posted by stevel48
If i end up doing the vacuum form yes, it will need the tail boom for sure. the only bummer about the vacuum form is that you lose a lot of detail
You don't lose much detail if you use a thin enough sheet. I have been thinking about using a single layer of carbon weave with a vacuum-forming rig to pressure-impregnate the resin to form a body (will be light and strong), but the antenna of the radio will have to be routed outside then. Just a thought at the moment.

-Oobly
Apr 30, 2008, 01:21 PM
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stevel48's Avatar
if anyone is interested when this is done I'll produce a body kit.
Apr 30, 2008, 01:30 PM
Mark Triebes
MarcusT's Avatar
I'll take one!!

Mark
Apr 30, 2008, 02:19 PM
Registered User
Hey, good job! One of my favorite helicopters, I was going to hand make a plug myself of the HH-65. But you got first - go for it.
It seems that the model might be a tad bigger in height than the air frame of the walkera. So if you go with the vacuum forming, you can do those adjustment there. Good job.
Apr 30, 2008, 02:57 PM
My hobby is why Im broke
darthdrk's Avatar
Quote:
Originally Posted by stevel48
If i end up doing the vacuum form yes, it will need the tail boom for sure. the only bummer about the vacuum form is that you lose a lot of detail
Not necessarily true. Alot of things can be made using Styrene. Heres some examples:
Apr 30, 2008, 03:00 PM
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stevel48's Avatar
Quote:
Originally Posted by darthdrk
Not necessarily true. Alot of things can be made using Styrene. Heres some examples:
I'm building your larger HH-65 kit as well Darthdrk. So what thickness sheet are you using for you moulds?
Apr 30, 2008, 03:12 PM
My hobby is why Im broke
darthdrk's Avatar
.020 and .030


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