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HPA
Hip Pocket Aeronautics Builder's Forum "III"
News:
Hip Pocket Aeronautics Plans Gallery up again:
https://hpa.aeromodelling.gr/plans/index.php
Recent topics
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Covering Blue Foam
by RolandD6
[Today at 09:34 AM] -
My Hatband replica build
by Jmk89
[Today at 08:35 AM] -
Humbrol Tiger Moth
by Piecost
[Today at 05:32 AM] -
Le Modele Reduit D'Avion Magazine.
by Mike Thomas
[Today at 04:56 AM] -
Hat Band
by Jmk89
[Today at 02:53 AM] -
What did you do aeroplane wise today?
by THB
[Oct 03, 2026, 12:15 PM] -
Fokker F.VIIa
by Jmk89
[Oct 03, 2026, 12:18 AM] -
P-30 Exhibit at the AMA Museum
by MEETOO
[Oct 02, 2026, 11:15 PM] -
Sopwith Triplane
by pb_guy
[Oct 02, 2026, 09:41 PM] -
JOD's Better series
by billdennis747
[Oct 02, 2026, 04:15 PM]
Posts: 25
Topics: 4
Last post: Aug 31, 2026, 01:40 PM Re: Registering process ... by flugzoig
Forum Policies
Here you will find Guidelines & Policies relating to participation in the HPA
Posts: 52
Topics: 4
Last post: Jun 09, 2026, 05:01 PM Re: switching to "only r... by PeeTee
Instructions
Some very simple instructions for first time users
Posts: 51
Topics: 9
Last post: Sep 25, 2026, 08:24 AM Re: test topic by Jmk89
General Discussion
This board is for pretty much anything that doesn't belong in the other forums.
Posts: 626
Topics: 39
Last post: Today at 04:56 AM Re: Le Modele Reduit D'... by Mike Thomas
Introduce yourselves
We may know each other from the past. or maybe not. In either case, for those who want when joining here.
Posts: 182
Topics: 58
Last post: Sep 09, 2026, 02:11 AM Hello Everyone, by wscott127
Model Aerodynamics
This is the section for discussions on aerodynamics that pertain to model aviation. Posts that make us think about the kind of aerodynamics that we deal with in model airplanes.
Posts: 52
Topics: 5
Last post: Sep 04, 2026, 01:02 AM Re: Fuselage design by Jmk89
Plans Gallery news
For any updates on uploads to the Plan Gallery
Posts: 153
Topics: 16
Last post: Oct 02, 2026, 04:15 PM Re: JOD's Better series by billdennis747
Looking for Plans & Articles
Use this board to make requests for Plans or Articles you'd like to get your hands on. All categories of models qualify so be specific. Mention the Model class and Name of the plane in the subject line please. For Articles, the publication and date, the author too if possible
Posts: 76
Topics: 9
Last post: Today at 02:53 AM Re: Hat Band by Jmk89
In the Work Shop
The set up, tools, jigs, glues, materials and anything else worth mentioning when it comes to the space where we build our models.
Posts: 144
Topics: 14
Last post: Today at 09:34 AM Re: Covering Blue Foam by RolandD6
Techniques
Various useful techniques for our models
Posts: 189
Topics: 17
Last post: Sep 24, 2026, 12:07 PM Re: Pin clamps, self mad... by Jmk89
Your Birds In Flight
Post pictures of your models doing what they are built to do. Fly! Baby! Fly! (If a discussion regarding a model displayed in this forum is going to happen, please start a new Topic in an appropriate forum)
Posts: 60
Topics: 14
Last post: Apr 24, 2026, 10:32 PM Re: Guillows Fairchild 2... by Konrad
Event - Announcements & Reports
List your upcoming events in this board so that we all can be prepared to attend. Also, for reports and photographs afterwatds
Posts: 608
Topics: 28
Last post: Sep 30, 2026, 03:10 PM Re: Indoor Fly In in Gre... by cvasec
Postal & E-Postal Competitions
Announce current and future Postal/E-Postal competitions, submit Operational Orders, contact info and results from past Postals in this board.
Posts: 114
Topics: 6
Last post: Oct 02, 2026, 03:33 PM Re: 1960s Coupe d’hiver ... by billdennis747
General Discussion
Any topic that is scale in general that won't fit in the other categories
Posts: 92
Topics: 10
Last post: Sep 20, 2026, 02:09 PM Re: Scale Modelling by ZIP.58
Scale, outdoor
IC, electric, CO2 or rubber powered free flight outdoor scale models.
Posts: 1,436
Topics: 31
Last post: Today at 05:32 AM Re: Humbrol Tiger Moth by Piecost
Scale, Indoor (F4D, F4E, Kitscale)
Indoor Scale, open classes, rubber powered F4D or electric/CO2 F4E and Kitscale
Posts: 767
Topics: 38
Last post: Oct 03, 2026, 12:18 AM Re: Fokker F.VIIa by Jmk89
Peanut Scale
Perhaps the most popular scale ff class. All designs, ideas, development and history.
Posts: 456
Topics: 16
Last post: Oct 02, 2026, 09:41 PM Re: Sopwith Triplane by pb_guy
Pistachio Scale
Even smaller yet and at 8 inches span it's a wonder they fly so well.
Posts: 1
Topics: 1
Last post: Dec 31, 2025, 06:52 PM My first attempt DH-60 G... by Pit
FAC Free Flight Scale
All FAC, Walnut, Peanut, Coconut, Jumbo etc.
Posts: 35
Topics: 1
Last post: Jul 05, 2026, 05:08 PM Re: Dumas Zero (As a tra... by Piecost
Dimescale / Pseudo-Dimescale
For topics on Dime Scale projects and kits from the WWII era when kits were so popular and resources were scarce.
Posts: 0
Topics: 0
No-Cal
All designs, ideas, development and history
Posts: 65
Topics: 8
Last post: Sep 29, 2026, 08:57 AM Re: Cessna Cardinal by 9600baud
General Discussion
Any topic that is indoor free flight in general that won't fit in the other categories
Posts: 23
Topics: 2
Last post: Aug 30, 2026, 11:17 PM Re: Chain Gang winder by lincoln
F1D, F1M, F1L
The FAI Models
Posts: 4
Topics: 1
Last post: Feb 08, 2026, 02:18 AM Re: Swiss Championship ... by OZPAF
Penny Plane and Limited Penny Plane
The heavy models
Posts: 2
Topics: 1
Last post: Mar 01, 2026, 05:42 PM Re: Introduction to Penn... by lincoln
Bostonian
All designs, ideas, development and history.
Posts: 80
Topics: 5
Last post: Aug 11, 2026, 05:46 AM Re: The BOSTONIAN that t... by One Cut
Capacitor Powered Indoor Models
As the title says, capacitor powered models for indoor flying.
Posts: 19
Topics: 7
Last post: Jun 12, 2026, 05:30 PM Re: Boeing L-15 Scout, p... by 9600baud
F1N - indoor glider in general
All designs, ideas, development and history.
Posts: 4
Topics: 1
Last post: May 27, 2026, 06:19 AM Re: Suggestions for an a... by lincoln
Legal Eagle
Any designs and development for the Legal Eagle class of indoor airplanes.
Posts: 0
Topics: 0
Science Olympiad
Much activity in this beginner, education level class. Add what you can.
Posts: 0
Topics: 0
Stick models and sport designs
Anything that is a fun model that does not fit in any other topic.
Posts: 52
Topics: 7
Last post: Jul 24, 2026, 05:12 PM Re: Wireless Countess by TheLurker
General Discussion
Any topic that is outdoor free flight in general that won't fit in the other categories.
Posts: 20
Topics: 3
Last post: Aug 20, 2026, 01:10 AM Re: Clean shop by Mike Thomas
Hand/Catapult Launched Gliders
Hand or Catapult Launched Gliders, designs, builds, ideas and techniques.
Posts: 16
Topics: 1
Last post: Feb 07, 2026, 08:07 AM Re: SPARROW BEGINNER'S C... by OZPAF
Towline Gliders
F1A, Nordic, Towline, Vintage towline. Slope and Vintage and A1 or A2.
Posts: 10
Topics: 2
Last post: Jan 26, 2026, 08:27 PM MYSTERY MAN CONVERSION T... by Lastwoodsman
P-30 Class Sport and Competition
Airplanes that meet the P-30 Rules for sport or competition.
Posts: 47
Topics: 6
Last post: Oct 02, 2026, 11:15 PM Re: P-30 Exhibit at the ... by MEETOO
Rubber
FAI, F1B Wakefield, F1G Coupe, Open Rubber, Small Rubber, Large Rubber, Mulvihill, Unlimited Rubber etc.
Posts: 137
Topics: 12
Last post: Today at 08:35 AM My Hatband replica build by Jmk89
Electric Power
Any designs that are electric sporting new technologies in this power source.
Posts: 2
Topics: 1
Last post: Jan 31, 2026, 03:27 PM Re: Reduced size Korker by pedwards2932
CO2 Power
F1K and other non-scale models, plus CO2 motors
Posts: 140
Topics: 15
Last post: Sep 16, 2026, 03:36 PM Re: Spare Telco charging... by Stunthenk
Embryo Endurance Outdoor
Embryo for outdoor flying, builds, details and topics for discussion.
Posts: 15
Topics: 1
Last post: Sep 29, 2026, 11:27 PM Re: Nite Hawk Embryo by calgoddard
Jetex or Rapier
Jetex and Rapier reaction motor power and jet like models both scale and sport designs.
Posts: 7
Topics: 1
Last post: Aug 27, 2026, 01:19 PM Re: "MIG 17 CAPTURED" - ... by Lastwoodsman
Old Time Rubber
Vintage, Wakefield, Sport, Large, Small. Designs from the 50's and earlier.
Posts: 52
Topics: 5
Last post: Aug 01, 2026, 04:36 PM Re: J.A. Skyraider by dputt7
Outdoor Sport Models
Designs that are sport airplanes that look good but do not fit into any scale category.
Posts: 26
Topics: 2
Last post: Sep 04, 2026, 05:22 AM Re: American Jet Hustler by Crabby
General Discussion
This Board is for all posts that relate to CL topics that don't fit in any of the model specific categories.
Posts: 9
Topics: 2
Last post: Sep 24, 2026, 11:39 PM Re: How much fuel does a... by Stunthenk
Carrier
Post topics about Control Line Carrier, all classes, information and ideas. Perhaps a good build presentation.
Posts: 0
Topics: 0
Racing
The current state of racing in general which includes all classes other than Mouse Racing.
Posts: 10
Topics: 1
Last post: Aug 18, 2026, 03:14 AM Re: KK Phantom by OZPAF
Sport
Non competition, Control Line Sport airplanes that are fun and make us all just smile a mile wide when we fly them.
Posts: 22
Topics: 4
Last post: Jul 23, 2026, 07:59 AM Re: My "Drop Off" dolly ... by ilgk48
Trainers
Any Control Line Stunters, designs and projects. Show off your machines, the finishes and the hardware. Talk about engines and flight trim. All topics relating to these great airplanes is encouraged.
Posts: 0
Topics: 0
RC Scale, small models only, indoor or outdoor
Small light R/C scale models, mainly Stick & Tissue but foam also welcome. As long as it is self-made, scale and small. Kit conversions are fine. But NO ARF or RTF models, plenty of other places for that.
Posts: 148
Topics: 4
Last post: Jun 01, 2026, 06:16 PM Re: Sopwith Batboat by g_kandylakis
RC Vintage Free Flight
Vintage design models, either converted to RC or flown with RC assist due to space availability.
Posts: 47
Topics: 3
Last post: Apr 28, 2026, 09:56 PM Re: Sparky 2X Speed 400 by Konrad
Commercial sites
Related commercial sites, even run by members, always relevant to our type of aeromodelling
Posts: 12
Topics: 6
Last post: Sep 02, 2026, 02:14 AM Re: Ray Harlan indoor sp... by g_kandylakis
Related links non commercial
Websites of interest to our kind of aeromodelling
Posts: 10
Topics: 8
Last post: Feb 21, 2026, 03:46 PM Re: Flying Aces Club New... by lincoln
Buy / Sell / Trade
A board for small classified ads. Please read the rules in the first post prior to posting.
Posts: 1
Topics: 1
Last post: Jul 28, 2026, 11:25 AM Re: Old kits by Spiros
6,136 Posts in 436 Topics by 354 Members - Latest Member: franzj
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