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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
Members
- Total Members: 336
- Latest: Old Fitts
Stats
- Total Posts: 5,365
- Total Topics: 395
- Online today: 121
- Online ever: 327 (Aug 12, 2026, 05:28 PM)
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Recent topics
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Fokker F.VIIa
by Stunthenk
[Aug 18, 2026, 10:48 PM] -
Humbrol Tiger Moth
by ZIP.58
[Aug 18, 2026, 08:51 PM] -
DIY Balsa stripper
by Andrew D
[Aug 18, 2026, 08:36 PM] -
Comparion of Coated Tissues
by Piecost
[Aug 18, 2026, 07:10 PM] -
Trinity indoor flying meetings
by dputt7
[Aug 18, 2026, 04:42 PM] -
Lodge Farm Scale FF Aug 26
by Jmk89
[Aug 18, 2026, 03:52 AM] -
KK Phantom
by OZPAF
[Aug 18, 2026, 03:14 AM] -
"MIG 17 CAPTURED" - a Sci-Fi short skit
by Lastwoodsman
[Aug 17, 2026, 10:23 PM] -
Ryan NYP
by TheLurker
[Aug 17, 2026, 10:00 PM] -
Piper PA-18 Super Cub by Guillows
by dputt7
[Aug 17, 2026, 04:22 PM]
Posts: 24
Topics: 4
Last post: Jun 26, 2026, 05:10 PM Re: Passing the Turing t... by lincoln
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: 49
Topics: 9
Last post: Jul 12, 2026, 07:41 AM Re: Avatars (no, not the... by Jmk89
General Discussion
This board is for pretty much anything that doesn't belong in the other forums.
Posts: 550
Topics: 35
Last post: Aug 17, 2026, 12:35 PM Re: Random aero items no... by Stunthenk
Introduce yourselves
We may know each other from the past. or maybe not. In either case, for those who want when joining here.
Posts: 181
Topics: 57
Last post: Jul 12, 2026, 10:12 PM Re: I'm Bargle and I'm B... by faif2d
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: 48
Topics: 4
Last post: Apr 22, 2026, 05:17 AM Re: An In-depth explanat... by Konrad
Plans Gallery news
For any updates on uploads to the Plan Gallery
Posts: 112
Topics: 14
Last post: Aug 06, 2026, 03:38 PM Engine section added to ... by g_kandylakis
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: 53
Topics: 8
Last post: Jul 14, 2026, 12:56 PM 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: 95
Topics: 11
Last post: Aug 18, 2026, 08:36 PM Re: DIY Balsa stripper by Andrew D
Techniques
Various useful techniques for our models
Posts: 132
Topics: 11
Last post: Aug 04, 2026, 01:17 PM Re: Misty Glacier Mounta... by Spiros
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: 552
Topics: 25
Last post: Aug 18, 2026, 04:42 PM Re: Trinity indoor flyin... by dputt7
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: 106
Topics: 6
Last post: Aug 11, 2026, 08:37 AM Re: 1960s Coupe d’hiver ... by Jmk89
General Discussion
Any topic that is scale in general that won't fit in the other categories
Posts: 66
Topics: 7
Last post: Aug 13, 2026, 01:52 PM Re: Geared motors for ru... by Prosper
Scale, outdoor
IC, electric, CO2 or rubber powered free flight outdoor scale models.
Posts: 1,330
Topics: 28
Last post: Aug 18, 2026, 08:51 PM Re: Humbrol Tiger Moth by ZIP.58
Scale, Indoor (F4D, F4E, Kitscale)
Indoor Scale, open classes, rubber powered F4D or electric/CO2 F4E and Kitscale
Posts: 644
Topics: 34
Last post: Aug 18, 2026, 10:48 PM Re: Fokker F.VIIa by Stunthenk
Peanut Scale
Perhaps the most popular scale ff class. All designs, ideas, development and history.
Posts: 354
Topics: 14
Last post: Aug 17, 2026, 10:00 PM Re: Ryan NYP by TheLurker
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: 63
Topics: 8
Last post: Jul 04, 2026, 12:55 PM Re: Cessna Cardinal by g_kandylakis
General Discussion
Any topic that is indoor free flight in general that won't fit in the other categories
Posts: 12
Topics: 2
Last post: Jun 11, 2026, 03:05 AM Re: Chain Gang winder by Jmk89
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: 18
Topics: 2
Last post: Apr 03, 2026, 05:07 AM Re: Building a Comet 54"... by randoloid
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: 46
Topics: 6
Last post: Mar 27, 2026, 03:21 AM Re: Multi-Function P-30 ... by calgoddard
Rubber
FAI, F1B Wakefield, F1G Coupe, Open Rubber, Small Rubber, Large Rubber, Mulvihill, Unlimited Rubber etc.
Posts: 110
Topics: 10
Last post: Aug 15, 2026, 07:50 AM Re: Mystery model 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: 124
Topics: 14
Last post: Jul 15, 2026, 04:15 PM Re: CO2 Tank - Angle by Spiros
Embryo Endurance Outdoor
Embryo for outdoor flying, builds, details and topics for discussion.
Posts: 0
Topics: 0
Jetex or Rapier
Jetex and Rapier reaction motor power and jet like models both scale and sport designs.
Posts: 9
Topics: 1
Last post: Aug 17, 2026, 10:23 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: 18
Topics: 2
Last post: May 18, 2026, 06:56 AM Re: American Jet Hustler by gravitywell
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: 3
Topics: 1
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: 8
Topics: 5
Last post: Jul 26, 2026, 10:10 PM Re: DPCM / Aerowerkes by lincoln
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
5,365 Posts in 395 Topics by 336 Members - Latest Member: Old Fitts
Latest Post: "Re: Fokker F.VIIa" (Aug 18, 2026, 10:48 PM)
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