Search found 73 matches

by Simon Wright
November 21st, 2015, 10:36 am
Forum: Radio Equipment
Topic: JR DMSS Xbus
Replies: 1
Views: 995

JR DMSS Xbus

Looking at upgrading to JR DMSS with its serial/digital X-BUS system. It is quite a technology leap from my existing DSM2 systems and power board installations. While this has huge capability for really large models containing dozens of servos, I cannot find much information on X-BUS installations f...
by Simon Wright
October 28th, 2014, 7:43 pm
Forum: Your New Projects
Topic: 40 % Pucara twin Turbo Prop
Replies: 9
Views: 3967

Re: 40 % Pucara twin Turbo Prop

Ken, really nice to chat with you about your impressive Pucara project. It certainly caught my eye as I came up the escalator. Look forward to seeing more construction photos in the coming months.
by Simon Wright
June 29th, 2014, 2:16 pm
Forum: General Discussion Topics
Topic: How much space is needed for a large model?
Replies: 4
Views: 1464

Re: How much space is needed for a large model?

Put my sensible cap on and realised that our club strip is probably too small for easy take offs and landings, it is about 100ft x 40ft rectangle surrounded by wheat / barley

Will stick to my large aerobatic models.

Thanks

Si
by Simon Wright
June 28th, 2014, 5:17 pm
Forum: General Discussion Topics
Topic: How much space is needed for a large model?
Replies: 4
Views: 1464

How much space is needed for a large model?

Feeling inspired by some of the large Warbirds flown at Weston Park a few weeks back I wondered if something like a 1/4 scale Spitfire would be viable at our club field. I have not measured the size of the strip whicj with 3-4 ft high crop to 3 sides is not overly large but one of our planning condi...
by Simon Wright
January 1st, 2014, 12:55 pm
Forum: Forum / PC support
Topic: bits are missing
Replies: 55
Views: 13191

Re: bits are missing

Steve & Dave,

Please don't take my comments as moans, I was only giving feedback of the issues that had affected me personally.

I am sure that we all appreciate the hard work and time you put in and would again thank you for your continued effort.

Si
by Simon Wright
December 31st, 2013, 5:05 pm
Forum: Forum / PC support
Topic: bits are missing
Replies: 55
Views: 13191

Re: bits are missing

I have to login every time too.

Bit embarrasing as I didn't realise and had unread PMs from 2 or 3 weeks back

Smilies are visible but not working too.

On a positive, the online payment of membership renewals worked a treat (I Hope) :)

Happy New Year!
by Simon Wright
June 23rd, 2013, 8:15 pm
Forum: Technical Help required
Topic: DLE111 problem?
Replies: 1
Views: 1498

DLE111 problem?

after a frustrating Weston weekend attempting to start this hitherto unbelievably reliable and easy starting engine without success I attacked the DLE111 in a typically random and chaotic manner.. Before we start, the engine was running perfctly the weekend before, 3 turns on choke, ignition on and ...
by Simon Wright
March 23rd, 2013, 8:44 am
Forum: General Discussion Topics
Topic: New members invited
Replies: 1
Views: 864

Re: New members invited

PM sent. :)
by Simon Wright
January 23rd, 2013, 6:12 pm
Forum: General Discussion Topics
Topic: renewals
Replies: 10
Views: 3105

Re: renewals

Just a word or two of thanks to Lynne for her extraordinarily efficient service. My application was sent off just before christmas and arrived before the new year. Superb :-)
by Simon Wright
January 19th, 2013, 4:04 pm
Forum: The Old Forum Lounge
Topic: Has anybody been brave enough this weekend???
Replies: 16
Views: 3943

Re: Has anybody been brave enough this weekend???

A few brave (or stupid?) souls including me braved the weather today at the local club. Nice flying off a snow covered strip but flights were restiicted to small electric models as no one fancied messing about with assembly or starting motors. Actually felt warmer than anytimne in the last week.
by Simon Wright
October 18th, 2012, 10:44 am
Forum: Technical Help required
Topic: How do you measure G?
Replies: 36
Views: 7307

Re: How do you measure G?

Looks to me like you need for each side: one small wife approx 86lbs a child of approx 38lbs a small dog approx 9lbs and the cat, approx 2lbs Then see if you can get them to sit still. You have an issue with the cat sat next to the dog. At leats if the wing fails the cat is on top this time :D . :D...
by Simon Wright
October 18th, 2012, 8:12 am
Forum: Technical Help required
Topic: How do you measure G?
Replies: 36
Views: 7307

Re: How do you measure G?

Ok, thought i would try and put some weight on the wings tonight whilst round at my mate Daves house. Anyway over a few beers and stuff we decided that we must both weigh about 270 lbs. So we balenced the wing in the kitchen and sat on it. At this point Daves cat walked under the wing, just as it s...
by Simon Wright
October 17th, 2012, 4:52 pm
Forum: Technical Help required
Topic: How do you measure G?
Replies: 36
Views: 7307

Re: How do you measure G?

Yes, assuming it weighs 27lbs and is designed to pull 10g! As the wing is the lifting surface you can actually deduct its own weight from the calculation. it only really supports the fuselage etc so if the wing itself weighs 6lbs the 10 g load reduces to 27 -6 = 21 x 10g = 210 lbs. This is normally ...
by Simon Wright
October 17th, 2012, 4:22 pm
Forum: Technical Help required
Topic: How do you measure G?
Replies: 36
Views: 7307

Re: How do you measure G?

Done the maths (well excel spreadsheet did actually) S&L - V M/S 40.75 36 32 24 20 16 14 S&L - V KMH 146.7 129.6 115.2 86.4 72 57.6 50.4 S&L - V MPH 90 79.5 70.67 53. 44.1 35.331 30.9 Cl 0.12 0.15 0.19 0.40 0.49 0.77 1.00 M Nm -23 -9 -5 -2 -2 -2 -1 Re Wing K 1195. 1055.88 938.56 703.92 5...
by Simon Wright
October 17th, 2012, 2:11 pm
Forum: Technical Help required
Topic: How do you measure G?
Replies: 36
Views: 7307

Re: How do you measure G?

Agree that there is nothing what soever wrong with foam and veneer wings , particularly when the construction includes main and sub spars tto distribute loads. Landing loads are a really difficult to calculate and an empirical approach is typically the mose successful. As I said earlier in the waffl...
by Simon Wright
October 16th, 2012, 11:06 pm
Forum: Technical Help required
Topic: How do you measure G?
Replies: 36
Views: 7307

Re: How do you measure G?

Thanks Andy, When an object is travelling through the air, all we have are aerodynamic forces. Non aerodynamic forces only happen when all the sky is above the model. A sail ,parachute and even a sheet of paper is a wing of sorts. I thinnk the example you are quoting is based on the idea that given ...
by Simon Wright
October 16th, 2012, 8:40 pm
Forum: Technical Help required
Topic: How do you measure G?
Replies: 36
Views: 7307

Re: How do you measure G?

Ref the loading, Highest stress is at the wing centre, spar strength tapers according to station on wing. The bending moment o the spar is actually split into tension and compression loads in the top and bottom spars with the webbing or infill area coping with the buckling and shear. You can do all ...
by Simon Wright
October 16th, 2012, 8:30 pm
Forum: Technical Help required
Topic: How do you measure G?
Replies: 36
Views: 7307

Re: How do you measure G?

I think the calculations with turn radii estimate work but how do you control turn radii, and velocity to maintain these estimated G loads. the use of G meters is great but a bit of a bolting the stable door exercise once the model is designed and built. I view G loading from the other direction, un...
by Simon Wright
October 7th, 2012, 10:20 am
Forum: The Old Forum Lounge
Topic: What are the other 90% of our members doing?
Replies: 11
Views: 3782

Re: What are the other 90% of our members doing?

I understand and agree with some of the points made here. The LMA is by definition about LARGE models but the definition of a large model has changed massively over the years. Today most flying clubs around the country see a selection of models around the 30 to 50cc size each weekend, twenty years a...
by Simon Wright
September 24th, 2012, 10:57 am
Forum: General Discussion Topics
Topic: trying to locate LMA member Flying Levedale or Coppenhall?
Replies: 0
Views: 751

trying to locate LMA member Flying Levedale or Coppenhall?

We fly from a club near Penkridge and occasionally see and hear very large models flying to our west. The models include jets, biplanes and maybe even a turbo prop. we think they may be flying from Levedale or Coppenhall. As the models are large we would assume that the owner is a member of the LMA ...

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