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Old Dec 31, 2009, 07:50 PM
How many planes is too many?
groovejet's Avatar
Melbourne, Australia
Joined Aug 2007
3,913 Posts
Cool
Hokusei Primus EPP BX - A fantastic 450g EPP 3D foamy!

Hokusei recently introduced a new version of the Primus called the Primus BX. There's a heap of information on the Hokusei website, including some videos here: http://translate.google.com/translat...ei-kobe.co.jp/

After seeing how well it flies in the Hokusei videos, nac and I had to order this handsome-looking plane to try! Last night we ordered our Hokusei Primus BX EPP kits from http://www.bestvaluerc.com/shop/shopexd.asp?id=251 . This website in China is owned by feda and is the cheapest place in the world that I am aware of to buy Hokusei kits. Additionally, the owner is very reliable and offers great service. According to his website, "Primus EPP BX employs the successful box-like structural design as the other planes of the BX series do. Such a design offers better rigidity and makes the plane fly better in breezy conditions." My experience with other Hokusei "BX" is consistent with that statement.

It's a holiday weekend in China right now so we don't expect to receive the plane kits for at least a week. We'll post some photos when the kits arrive. For now I have posted a couple of photos from the Hokusei website.

I've been flying EPP 3D foamies for about 2 years. I've tried a few balsa planes from PA and 3DHS but I prefer to fly EPP planes. EPP planes fly great, are cheap, are highly durable and are very easy to repair. Their light weight and foam construction allow me to fly them in places I wouldn't dream of flying a balsa plane. By flying EPP planes I spend more time flying and less time repairing. I find EPP planes more relaxing to fly, and I can try all sorts of crazy tricks close to the ground without the same consequences when I crash.

I've tried a lot of these EPP 3D planes and have found some absolutely sensational planes amongst the many that are available. Hokusei is my favourite manufactuer of EPP 3D planes. Hokusei have been making them for many years. They have an extensive range of EPP 3D planes, more than any other manufacturer that I am aware of, and offer kits in various sizes. I have been gradually accumulating most of their EPP kits. All of the Hokusei kits that I have tried exhibit great flight characteristcs, but some are a better fit to my flying style than others. Right now my 2 favourite Hokusei kits are the Ultima BX http://www.rcgroups.com/forums/showt...ight=ultima+bx and the Hokusei Primus Z http://www.rcgroups.com/forums/showthread.php?t=789770. I suspect that the new Primus BX will become one of my favourites too!




QUICK INDEX

Manufacturer's Official Information (in Japanese)

http://www.hokusei-japan.com/product...us-epp-bx.html


Hokusei Flight Videos

Japan

http://www.hokusei-japan.com/PrimusEPP-BX-Ono1.wmv
http://www.hokusei-japan.com/PrimusEPP-BX-Junki1.wmv


Taiwan

Refer to post #3 below.



Build Photos

Contents of the kit

http://www.rcgroups.com/forums/showp...0&postcount=19


The Build

Part 1 http://www.rcgroups.com/forums/showp...2&postcount=21
Part 2 http://www.rcgroups.com/forums/showp...4&postcount=22
Part 3 http://www.rcgroups.com/forums/showp...6&postcount=23
Part 4 http://www.rcgroups.com/forums/showp...2&postcount=24


Maiden Flight

Pre-flight photos

http://www.rcgroups.com/forums/showp...7&postcount=25

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Last edited by groovejet; Apr 18, 2010 at 01:13 AM. Reason: Adding up-to-date information
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Old Jan 06, 2010, 04:36 PM
nac
Registered User
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Melbourne, Australia
Joined Jan 2008
954 Posts
I have my motor on the way from HC, and the rest of the bits ready for this baby. I even ordered more batteries to enhance the fun!

I have been flying both the Ultima BX and Primus Z, and I think that this one may have the best features of both. We shall see...
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Last edited by nac; Jan 22, 2010 at 06:37 PM.
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Old Jan 08, 2010, 11:45 PM
How many planes is too many?
groovejet's Avatar
Melbourne, Australia
Joined Aug 2007
3,913 Posts
I just found a good video of this plane.

HOKUSEI Primus BX EPP 3D (4 min 30 sec)
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Old Jan 10, 2010, 05:39 PM
"Aircraftus Fragmentum"
kydawg1's Avatar
Motor City USA
Joined Mar 2007
3,597 Posts
Quote:
Originally Posted by groovejet View Post
Hokusei recently introduced a new version of the Primus called the Primus BX. There's a heap of information on the Hokusei website, including some videos here: http://translate.google.com/translat...ei-kobe.co.jp/

After seeing how well it flies in the Hokusei videos, nac and I had to order this handsome-looking plane to try! Last night we ordered our Hokusei Primus BX EPP kits from http://www.bestvaluerc.com/shop/shopexd.asp?id=251 . This website in China is owned by feda and is the cheapest place in the world that I am aware of to buy Hokusei kits. Additionally, the owner is very reliable and offers great service. According to his website, "Primus EPP BX employs the successful box-like structural design as the other planes of the BX series do. Such a design offers better rigidity and makes the plane fly better in breezy conditions." My experience with other Hokusei "BX" is consistent with that statement.

It's a holiday weekend in China right now so we don't expect to receive the plane kits for at least a week. We'll post some photos when the kits arrive. For now I have posted a couple of photos from the Hokusei website.

I've been flying EPP 3D foamies for about 2 years. I've tried a few balsa planes from PA and 3DHS but I prefer to fly EPP planes. EPP planes fly great, are cheap, are highly durable and are very easy to repair. Their light weight and foam construction allow me to fly them in places I wouldn't dream of flying a balsa plane. By flying EPP planes I spend more time flying and less time repairing. I find EPP planes more relaxing to fly, and I can try all sorts of crazy tricks close to the ground without the same consequences when I crash.

I've tried a lot of these EPP 3D planes and have found some absolutely sensational planes amongst the many that are available. Hokusei is my favourite manufactuer of EPP 3D planes. Hokusei have been making them for many years. They have an extensive range of EPP 3D planes, more than any other manufacturer that I am aware of, and offer kits in various sizes. I have been gradually accumulating most of their EPP kits. All of the Hokusei kits that I have tried exhibit great flight characteristcs, but some are a better fit to my flying style than others. Right now my 2 favourite Hokusei kits are the Ultima BX http://www.rcgroups.com/forums/showt...ight=ultima+bx and the Hokusei Primus Z http://www.rcgroups.com/forums/showthread.php?t=789770. I suspect that the new Primus BX will become one of my favourites too!
I have this plane in the states....from BP HOBBIES - called the MUSTANG from SUNDAY SKY - I can confirm if flies GREAT!

http://www.bphobbies.com/view.asp?id...5&pid=C2390037
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Old Jan 10, 2010, 05:43 PM
"Aircraftus Fragmentum"
kydawg1's Avatar
Motor City USA
Joined Mar 2007
3,597 Posts
A couple of picts of mine.....
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Last edited by kydawg1; Jan 10, 2010 at 05:48 PM.
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Old Jan 10, 2010, 05:53 PM
nac
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Melbourne, Australia
Joined Jan 2008
954 Posts
I think you may have the Primus Z and not the BX version.
http://www.bestvaluerc.com/shop/shopexd.asp?id=114

The BX version is flat on the bottom of the fuselage.
http://www.bestvaluerc.com/shop/shopexd.asp?id=251

I also have the Primus Z and it fly's very well. The only issue is that I do get a bit of fuse twist on extreme maneuvers which I think the BX version will solve.
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Old Jan 10, 2010, 07:44 PM
How many planes is too many?
groovejet's Avatar
Melbourne, Australia
Joined Aug 2007
3,913 Posts
Yes, your Mustang plane looks more like a Hokusei Primus Z than a Primus BX. I have a Primus Z also and it flies very well indeed. There appear to be some subtle differences between a Primus Z's supplied hardware and the hardware used on your plane. eg. the aileron control horn parts poking out of the top of the wing are different. Did you use some of your own hardware?

Here's the thread for the Hokusei Primus Z so you can take a closer loook if you wish: http://www.rcgroups.com/forums/showthread.php?t=789770

Does you plane have holes in the inner layer on the main wing, as seen in the photos of the first post on the Primus Z thread?

I'm curious to know whether your plane's control surfaces consist of 3 layers of foam; depron in the middle and EPP either side. The 3 layer control surface construction technique is classic Hokusei. Does you plane use this technique?

This is very interesting. I look forward to hearing more from you.
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Old Jan 10, 2010, 10:15 PM
nac
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Melbourne, Australia
Joined Jan 2008
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I found another site that sells the same plane!

http://www.wlrchobbies.com/index.php...emart&Itemid=1
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Old Jan 16, 2010, 04:14 PM
How many planes is too many?
groovejet's Avatar
Melbourne, Australia
Joined Aug 2007
3,913 Posts
Argh!!! EMS post is really slow on this occasion. The tracking info makes me wonder if a postal worker put the box in the corner of the room for a week and forgot about it. I should get the kit tomorrow according to the tracking info; can't wait!
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Old Jan 16, 2010, 05:50 PM
"Aircraftus Fragmentum"
kydawg1's Avatar
Motor City USA
Joined Mar 2007
3,597 Posts
Quote:
Originally Posted by groovejet View Post
Yes, your Mustang plane looks more like a Hokusei Primus Z than a Primus BX. I have a Primus Z also and it flies very well indeed. There appear to be some subtle differences between a Primus Z's supplied hardware and the hardware used on your plane. eg. the aileron control horn parts poking out of the top of the wing are different. Did you use some of your own hardware?

Here's the thread for the Hokusei Primus Z so you can take a closer loook if you wish: http://www.rcgroups.com/forums/showthread.php?t=789770

Does you plane have holes in the inner layer on the main wing, as seen in the photos of the first post on the Primus Z thread?

I'm curious to know whether your plane's control surfaces consist of 3 layers of foam; depron in the middle and EPP either side. The 3 layer control surface construction technique is classic Hokusei. Does you plane use this technique?

This is very interesting. I look forward to hearing more from you.
Yes holes in the inner layer and YES 3 layer control surfaces.
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Old Jan 16, 2010, 05:51 PM
"Aircraftus Fragmentum"
kydawg1's Avatar
Motor City USA
Joined Mar 2007
3,597 Posts
Quote:
Originally Posted by nac View Post
I found another site that sells the same plane!

http://www.wlrchobbies.com/index.php...emart&Itemid=1
Yep - great plane, I really like it.
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Old Jan 17, 2010, 03:41 PM
nac
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Melbourne, Australia
Joined Jan 2008
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Referb of my Primus Z

Moved to Primus Z Forum
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Last edited by nac; Jan 17, 2010 at 05:23 PM. Reason: Moved to Primus Z Forum
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Old Jan 17, 2010, 05:10 PM
How many planes is too many?
groovejet's Avatar
Melbourne, Australia
Joined Aug 2007
3,913 Posts
Quote:
Originally Posted by nac View Post
I completed a referb of my Primus Z on the weekend. I stripped it down removed all of tape. I then replaced all of the Velcro and repaired any tears. I got out the air brush and touched up the painted areas. Finally put the motor back in and adjusted everything.

I think that we need to get the Primuz Z thread moved across to 3D foamies.
Looks good in the photos.

This Primus Z thread is already in the 3D Foamies forum.
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Old Jan 17, 2010, 05:21 PM
nac
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Damn I missed it. I'll move my post.
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Old Jan 17, 2010, 07:44 PM
Crash & Burn
rmgmag's Avatar
Glastonbury, CT
Joined Nov 2004
2,501 Posts
All right, since goovejet convinced me to get a Primus Z a while back, I guess I should subscribe to this thread too.
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