16
Events / Re: ISR 2019 Gliding events
« on: June 09, 2019, 22:34:55 PM »
Weather was perfect. I didn't take any photos though.
A great days flying.
Chris
A great days flying.
Chris
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17
Slope Soaring / Re: BPLR Madslide
« on: March 26, 2019, 09:32:46 AM »
Hi John,
If you're cutting madslide wings, me too please.
It's been on my "most wanted" list for quite some time.
Chris
If you're cutting madslide wings, me too please.
It's been on my "most wanted" list for quite some time.
Chris
18
PSS / Re: PSSA Mass Build?
« on: August 20, 2018, 20:09:51 PM »
a B/C please. Too many D's around and the B/C gives the option of RAF (i.e. Mk III) or USAF colour schemes.
19
Misceleanous / Re: Free flight models
« on: July 21, 2018, 14:28:53 PM »
Here's a little gem of a video - "The well trained sanding block".
Its the first episode of a 3 video sequence on the building and flying of a Veron Hawker Fury.
Links to subsequent episodes at the end of each video.
Unlike a lot of youtube, I don't think you'll regret the time spent watching this video.
Get yourself a mug of tea (and maybe a few biccies) and enjoy!
https://youtu.be/uKW-wXbjPfw
Its the first episode of a 3 video sequence on the building and flying of a Veron Hawker Fury.
Links to subsequent episodes at the end of each video.
Unlike a lot of youtube, I don't think you'll regret the time spent watching this video.
Get yourself a mug of tea (and maybe a few biccies) and enjoy!
https://youtu.be/uKW-wXbjPfw
20
Slope Soaring / New Model Speed Record
« on: June 14, 2018, 22:45:27 PM »
Has anybody seen this video about dynamic soaring?
https://www.youtube.com/watch?v=nv7-YM4wno8
This is a talk by Spencer Lisenby about his path to setting a number of new speed records for model aircraft.
It does go on for a bit, so comfy chair and a mug/glass of ones favourite tipple are essential companions whilst viewing.
I can only speak for myself, but I found it rather interesting and thought provoking.
Chris
https://www.youtube.com/watch?v=nv7-YM4wno8
This is a talk by Spencer Lisenby about his path to setting a number of new speed records for model aircraft.
It does go on for a bit, so comfy chair and a mug/glass of ones favourite tipple are essential companions whilst viewing.
I can only speak for myself, but I found it rather interesting and thought provoking.
Chris
21
Misceleanous / Re: Free flight models
« on: June 04, 2018, 11:11:51 AM »
It can also depend on what you mean by hinged. Many high (and not so high) performance FF models are fitted with a 'dethermaliser' (aka DT) in its simplest form a pop up elevator.
Hippocket aeronautics is another useful resource for mostly FF related advice and motivation (or de-motivation when you see what others are building/flying e.g. rubber powered shackelton, Lockheed constellation, both with 4 rubber motors...)
http://www.hippocketaeronautics.com/hpa_forum/index.php
I have often thought that scaling up some of the jetex plans referenced from ffscale.co.uk page that John mentioned above would make a good basis for small PSS models. I've not had enough time to test that hypothesis out though
Hippocket aeronautics is another useful resource for mostly FF related advice and motivation (or de-motivation when you see what others are building/flying e.g. rubber powered shackelton, Lockheed constellation, both with 4 rubber motors...)
http://www.hippocketaeronautics.com/hpa_forum/index.php
I have often thought that scaling up some of the jetex plans referenced from ffscale.co.uk page that John mentioned above would make a good basis for small PSS models. I've not had enough time to test that hypothesis out though
22
PSS / Re: Sectioned
« on: March 22, 2018, 09:52:10 AM »
Thanks Fred.
I've been busy comparing profiles on airfoiltools.com, so I can see what the differences are. They all look quite a bit different to the shoe soles I'm more used to building - one historical aerobatic section was reputedly based on a US Size 9 shoe sole.
I suspect any high speed issues will have more to do with the pilot than airfoil/washout (or lack of) with me at the controls.
This could turn into a serious project yet.
Chris
I've been busy comparing profiles on airfoiltools.com, so I can see what the differences are. They all look quite a bit different to the shoe soles I'm more used to building - one historical aerobatic section was reputedly based on a US Size 9 shoe sole.
I suspect any high speed issues will have more to do with the pilot than airfoil/washout (or lack of) with me at the controls.
This could turn into a serious project yet.
Chris
24
Folks,
Any recommendation on a section for a ~1 m span jet.
Model is a West Wings Hawk. The plan so far is to stretch the span slightly and reduce the size of the intakes, both as recommended on the Facebook PSS group
It did occur to me that it might be worthwhile changing the section also since this will never be an EDF.
I know I can while away a few hours googling and reading to find a collection of contradictory recommendations, but it's always easier to ask...
Option 1 is to use the existing ribs/section
Oprion 2 is to make a builtup wing with a new section
Option 3 is to make a foam core wing for it (been a while since I cut one of those), with a revised section.
I'm leaning towards option 3 as washout is required and that would seem to me to be easier to build into a foam wing.
Having said that I've built plenty of wings with washout, it just wasn't deliberate...
Chris
Any recommendation on a section for a ~1 m span jet.
Model is a West Wings Hawk. The plan so far is to stretch the span slightly and reduce the size of the intakes, both as recommended on the Facebook PSS group
It did occur to me that it might be worthwhile changing the section also since this will never be an EDF.
I know I can while away a few hours googling and reading to find a collection of contradictory recommendations, but it's always easier to ask...
Option 1 is to use the existing ribs/section
Oprion 2 is to make a builtup wing with a new section
Option 3 is to make a foam core wing for it (been a while since I cut one of those), with a revised section.
I'm leaning towards option 3 as washout is required and that would seem to me to be easier to build into a foam wing.
Having said that I've built plenty of wings with washout, it just wasn't deliberate...
Chris
25
Club Talk / Re: ISR club logo
« on: March 18, 2018, 13:10:37 PM »
Fred,
Put me down for 5 please. Can't make next Big L meeting, but planning to be in Tountinna, or you could just give them to Kevin or Ralph as I'll see them both in Shannon for the CL fly in in April.
Chris
Put me down for 5 please. Can't make next Big L meeting, but planning to be in Tountinna, or you could just give them to Kevin or Ralph as I'll see them both in Shannon for the CL fly in in April.
Chris
26
Events / Re: 2018 ISR events
« on: March 10, 2018, 17:02:28 PM »
The road up would have been fun in the landy, but not entirely in a good way, there were sections where it was hard to tell where the road ended and some of the drifts were easily 1 metre deep in spots.
Ninestones itself was quite usable, if one could get there, but the sign said "Road Closed" and it wasn't joking.
Ninestones itself was quite usable, if one could get there, but the sign said "Road Closed" and it wasn't joking.
27
Electrics / Re: New build - RCME Bambina
« on: January 22, 2018, 13:38:03 PM »
Soldering Bullet Connectors (either gender):
OK, I know it would have been useful to know this before hand, but for the next time...
I use a scrap of MDF that is drilled to take the bullet connectors I want to solder.
Ideally the connectors are a sliding fit into the holes (not too loose).
Just whack the scrap of MDF into a vice on the bench, or clamp it to the bench (the fewer things to move the better), insert the connectors you want to solder (cup/bucket/wire end up), tin the wire ends and solder.
This way the only heat loss is through the wire as the MDF isolates the connectors from the vice/clips, and whilst it would help to have a third hand, it's not absolutely necessary, as only the soldering iron and the wire can move.
Depending on the size of wire being soldering I use a lolly stick and rubber band tweezers to hold the wire. Thicker wire sizes can get un-comfortably hot to handle during the soldering phase. No need to ask how I figured that out...
All told, the time spend cutting/drilling the MDF is more than compensated for in the much faster soldering time (and generally much neater soldering finish)
Chris
OK, I know it would have been useful to know this before hand, but for the next time...
I use a scrap of MDF that is drilled to take the bullet connectors I want to solder.
Ideally the connectors are a sliding fit into the holes (not too loose).
Just whack the scrap of MDF into a vice on the bench, or clamp it to the bench (the fewer things to move the better), insert the connectors you want to solder (cup/bucket/wire end up), tin the wire ends and solder.
This way the only heat loss is through the wire as the MDF isolates the connectors from the vice/clips, and whilst it would help to have a third hand, it's not absolutely necessary, as only the soldering iron and the wire can move.
Depending on the size of wire being soldering I use a lolly stick and rubber band tweezers to hold the wire. Thicker wire sizes can get un-comfortably hot to handle during the soldering phase. No need to ask how I figured that out...
All told, the time spend cutting/drilling the MDF is more than compensated for in the much faster soldering time (and generally much neater soldering finish)
Chris
29
IAA - NOTAM - TRAs / FAA Model AIrplane registration shot down
« on: May 26, 2017, 23:10:05 PM »
Talking to one of the lads today he told me that the FAA had lost, in court, in their demands for model aircraft to be registered.
A quick trawl on "d interweb" turned this up:
https://www.forbes.com/sites/johngoglia/2017/05/19/federal-appeals-court-voids-faa-registration-rule-for-model-aircraft/#37aa264b4238
I wonder what, if any, implications this has for us and our dealings with the IAA/EASA.
A quick trawl on "d interweb" turned this up:
https://www.forbes.com/sites/johngoglia/2017/05/19/federal-appeals-court-voids-faa-registration-rule-for-model-aircraft/#37aa264b4238
I wonder what, if any, implications this has for us and our dealings with the IAA/EASA.
30
Control Line / Re: "Home International" 2017 in Dublin next weekend
« on: May 26, 2017, 09:38:11 AM »
John,
Looking at the forecasts this morning it looks like we should be good to go from maybe 11 am tomorrow.
Since the forecast for Sunday is good, we'll try for a 10:00 am start so that we can defintely get 3 rounds in on both days.
Chris
Looking at the forecasts this morning it looks like we should be good to go from maybe 11 am tomorrow.
Since the forecast for Sunday is good, we'll try for a 10:00 am start so that we can defintely get 3 rounds in on both days.
Chris