Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Messages - EI1638

Pages: [1] 2 3 ... 8
Slope Soaring / Re: Meeting Calender
« on: February 07, 2021, 15:10:41 PM »
August sounds good, but what year?

Electrics / Re: MPX Multicont ESC failsafe problem
« on: June 04, 2020, 19:19:32 PM »
Thanks Ralph,

That worked.

Throttle travel and limit set to max. Fixed it.

The rest of my ESCs work fine with 100% travel, but this one needed the full 155%

Don't quite understand why though as the ESC was arming and operating normally until I initiated the failsafe.

We live and learn


Electrics / MPX Multicont ESC failsafe problem
« on: June 01, 2020, 22:06:54 PM »

I've obviously not refined my google search term enough as Prof. Google is not being his usual helpful self.

I'm taking advantage of the no fly time and migrating my models to a new (to me) transmitter.

MPX Acromaster, with Acromaster Power Set.

Everything works fine, until I power the transmitter back up after testing the failsafe.
Before turning off the transmitter the motor responds to the throttle as expected.

Then I test the failsafe, by turning the transmitter off.
Failsafe kicks in, motor stops. Happy days.

Then I turn the transmitter back on again...

The ESC just ignores the throttle, I can wiggle the throttle anyway I like, but the only way to stop the motor turning is to turn off the transmitter, again, so that the failsafe kicks in again.

I'm definitely puzzled by this as the Acromaster is the last model I've moved to the new transmitter, but its the only one that has given me this kind of hassle.

All the rest of my models have various far eastern (EMAX/Turnigy/Hobbyking/Ripmax) ESCs, and they all behave normally, as one would expec,t after the failsafe condition is removed (transmitter switched on again).

Maybe the answer really is in the ESC manual, but I've not spotted it so far - though maybe todays sunshine went to my head and I missed it. All off my other ESC's just work, and with the exception of the Acromaster the rest of the fleet is ready to commit aviation. Since none of my cheapo ESCs have this problem I can't believe that its an issue with the transmitter.
I didn't even have to go looking for the ESC manuals for any of my other models.

I guess one solution would be just to swap out the ESC, but I'll need to use the MPX ESC in something, sooner or later.

I've tried moving the throttle to idle and back up again, but no joy - in fact the transmitter won't transmit unless I have the throttle at idle anyway after power up, so no choice in the matter there, but  repeating the arming sequence should not matter as the ESC was powered all through the failsafe test.

Any one come across this before? Any suggestions?


Scale / Re: Pilots?
« on: May 11, 2020, 22:47:53 PM »
Hi Bill,

If you're still looking to carve a pilot there are some resources in the Hippocketaeronautics plans gallery.

You'll need to register to download anything, but there's plenty of food for thought in the hippocket plans gallery:

Richard Crossleys guide to Pilot carving:
Scaling Pilots:                                  
Size references for Pilots:               


Slope Soaring / Phase 6 Ailerons
« on: May 01, 2020, 07:54:18 AM »

Does anyone know if the phase 6 ailerons have changed in dimension over the millenia?

Looking at the kit, the original design had a standard (3kg/cm torque) servo in the middle, so, logically 2 x 1.5 kg/cm servos would suffice for its current incarnation. But that would assume that the dimensions of the surfaces had not changed.

The radio I plan on using for this one is incapable of a crow mix (its been gathering dust for a while), so two rather than four servo wing by default.

Minimum of fettling desired - to the extent of not hacking the wings - as a result of an excess of last minute fettling on the last build.


PS: I've plenty of 1.6 kg/cm in stock, not so other sizes that'd fit in a P6 wing without requiring blisters etc. 

Club talk / Re: Well, I never knew that.
« on: November 16, 2019, 13:11:02 PM »
I do believe some of the 'officials' mentioned above were from our own MACI. I see that at least one is on the committee still.

I don't know if the people involved venture on here, but yes 'we', in the royal sense, were part of this feat.

I have to admit I only found out about this well after the event.

There is some info on the web about the aircraft, I believe the motor was a modified OS four stroke, and to reduce drag the successful airframe had only a single aileron.
Construction is best described as 'traditional', it's not the high tech material construction that jumps to mind when this feat is mentioned.

Wikipedia to the rescue:

The 'little grey cells' are still working.

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.


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.


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.

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!

Slope Soaring / New Model Speed Record
« on: June 14, 2018, 22:45:27 PM »
Has anybody seen this video about dynamic soaring?

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.


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...)

I have often thought that scaling up some of the jetex plans referenced from 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

PSS / Re: Sectioned
« on: March 22, 2018, 09:52:10 AM »
Thanks Fred.

I've been busy comparing profiles on, 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.


PSS / Re: Sectioned
« on: March 19, 2018, 15:17:51 PM »
Thanks Bill.

PSS / Sectioned
« on: March 18, 2018, 13:20:19 PM »

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...


Pages: [1] 2 3 ... 8