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Old Mar 26, 2011, 05:25 PM
How many planes is too many?
groovejet's Avatar
Melbourne, Australia
Joined Aug 2007
3,934 Posts
New Product
Hokusei Sbach 342 EPP HV

This is latest addition to Hokusei's Hard Version (HV) lineup of stiff EPP planes. It's a nice-looking EPP Sbach with a slightly stretched fuselage for a little more precision.

Basic specs:

Wingspan : 1,200 mm
Length : 1,220 mm
Wing area : 33.6d ㎡
Flying weight : 945g (without batteries) 1,140 g (with battery)
Motor : Dualsky XM3542CA-6 KV940 or similar
Prop : HS13x7 (wood) ; depends on motor
ESC : Hobbywing PENTIUM-40A or similar
Battery : 3S 45C 11.1V 1,800 ~ 2,200 mA
Servos: Hyperion HP-DS11-AMB or Hyperion HP-DS13-TMB or Futaba S3156

More details here: http://www.hokusei-japan.com/product...ch-epp-hv.html

Hokusei Model Sbach342 EPP HV Flight Test1 (2 min 20 sec)

Hokusei Model Sbach342 EPP HV Flight Test2 (3 min 13 sec)
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Last edited by groovejet; Mar 26, 2011 at 05:31 PM.
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Old Apr 01, 2011, 02:20 PM
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QUEBRANTAHUESOS's Avatar
México, YUC, Mérida
Joined Jul 2007
272 Posts
Hey Groove thanks a lot for all the information that Sbach flies really great, it would be very nice to have her included on the fleet, but as far as I know is not simple to get her direct from Hokusei Japan, so I wonder if somebody knows another surce, perhaps with the good Feda?
regards from Mexico.
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Old May 16, 2012, 06:38 PM
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United States, CA, Palos Verdes Peninsula
Joined Dec 2011
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Got mine from f3aunlimited.com and maidened it yesterday with the following setup:

Omega 130g motor
Savox sh-0255 elevator servo and Hitec HS-65mg everywhere else
Xoar 14x7 wood prop
Gens Ace 3S 2200 mah lipo all the way forward to the firewall

With this setup, this plane was very floaty and made 3D flying seem like it was in slow motion, which isn't necessarily bad. It made practicing rolling harriers easier. However, for knife edge spins and tumbles, the 3DHS 48" EPP Extra 330 SC is a more responsive plane. Overall, it's a nice flying plane and is a good addition to the fleet.
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Old May 24, 2012, 10:32 PM
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Here's a pic of how the wings attach to the fuse.
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Old May 25, 2012, 09:48 AM
My hovercraft is full of eels.
USA, TN, Gallatin
Joined Aug 2009
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Thanks for the pic. Are those wood screws? I don't guess it really matters.

It looks like a person could cut the center braces out and move them an inch in either direction to retain fuse strength. Then dremel slots into the wing mounts for hooks and use surgical tubing to lock them together. Removable wings, no tools required!

I
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Old May 25, 2012, 10:13 AM
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Quote:
Originally Posted by SD One. View Post
Thanks for the pic. Are those wood screws? I don't guess it really matters.

It looks like a person could cut the center braces out and move them an inch in either direction to retain fuse strength. Then dremel slots into the wing mounts for hooks and use surgical tubing to lock them together. Removable wings, no tools required!

I
I used servo screws to hold the wings down - thinking they should shear off in a hard enough crash. I think the wood cross members provide some strength to the fuse and/or wings - might not be able to cut them out. The fuse walls by the wing seem to be only EPP, unlike the 3DHS 330SC.

I'm thinking of using some 4mm plastic wing screws I got for my 3DHS buck huck and putting in blind nuts on the cross members. That will get rid of the need for tools and still hold the wings as the manufacturer intended.
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Old May 25, 2012, 11:24 AM
My hovercraft is full of eels.
USA, TN, Gallatin
Joined Aug 2009
3,410 Posts
Not ideal but that would work too. I wasn't sure the cross braces would be thick enough for blind nuts but another layer of ply glued underneath would fix that. Sucks about the side walls though. There's no way squeezing the wings together with surgical tubing would work if the walls don't have the strength to handle a bit of pressure.

Ahh well. I'll stick with my Sbach 39 BX and my Extra 330SC for now.
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Old May 25, 2012, 11:35 AM
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Originally Posted by SD One. View Post
Not ideal but that would work too. I wasn't sure the cross braces would be thick enough for blind nuts but another layer of ply glued underneath would fix that. Sucks about the side walls though. There's no way squeezing the wings together with surgical tubing would work if the walls don't have the strength to handle a bit of pressure.

Ahh well. I'll stick with my Sbach 39 BX and my Extra 330SC for now.
The Extra 330SC is all that I really needed, but I wanted a Thunderbolt scheme Sbach. I use the HV on the weekdays when I only have time to fly 1 or 2 planes, and use the 330SC on the weekends so I can get more planes in the 4Runner. I haven't taken HV apart since I buillt it.
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Old Jun 12, 2012, 02:26 PM
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Quote:
Originally Posted by Jboy90277 View Post
Got mine from f3aunlimited.com and maidened it yesterday with the following setup:

Omega 130g motor
Savox sh-0255 elevator servo and Hitec HS-65mg everywhere else
Xoar 14x7 wood prop
Gens Ace 3S 2200 mah lipo all the way forward to the firewall

With this setup, this plane was very floaty and made 3D flying seem like it was in slow motion, which isn't necessarily bad. It made practicing rolling harriers easier. However, for knife edge spins and tumbles, the 3DHS 48" EPP Extra 330 SC is a more responsive plane. Overall, it's a nice flying plane and is a good addition to the fleet.
Did back to back flights to see the difference between the two in windy conditions. Although a little different, I really like the way both fly.

Hokusei 48" EPP Sbach 342 HV on windy day (5 min 12 sec)
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Old Jun 12, 2012, 02:27 PM
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Originally Posted by Jboy90277 View Post
Did back to back flights to see the difference between the two in windy conditions. Although a little different, I really like the way both fly.

http://www.youtube.com/watch?v=qSh9r_v3pjg
3DHS 48in EPP Extra 330SC (5 min 11 sec)
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