Messages

421

Events / t30

« on: September 13, 2010, 17:02:32 PM »

thanks bill. i had a collection of photos of the full size in several rm mags so deciding to go with the scheme was the easy part. i covered all the silver parts in silver solartex in one night. the red solartex took about 3 weeks! easy to do, just so much of it

422

Events / Sept 2010 Glide in

« on: September 13, 2010, 15:12:55 PM »

hey john p, that was one of the most graceful launches i have ever seen!
it's obvious your years as a ballet dancer has stood you in good stead, the fluid motion, the release, the follow through and recovery from the cat's tumble....extraordinary stuff!  i would have given you douze points if both legs had been straight up as you went over. impressive none the less, well done, john

423

Events / t30

« on: September 13, 2010, 14:54:46 PM »

hi bill, yea , that t 30, slingsby 'prefect' is mine. i scaled up an old radio modeller plan to give me a 3.2m span model. colour scheme is of a dutch reg a/c. i started the model in 1995 and finished it this year for retroplane but i didn't go. last sat was it's best outing so far, it likes a good breeze/ good lift kind of a day but it doesn't scratch very well.

424

Events / Sept 2010 Glide in

« on: September 11, 2010, 23:37:49 PM »

home at 9.30pm. just reliving the events of the day and what a great day's flying we had! consistant winds, solid lift all day and plenty of lively banter to keep us sharp. thanks to all in company, i thoroughly enjoyed the day out. looking forward to the next outing.gb

425

Events / Sept 2010 Glide in

« on: September 10, 2010, 22:20:44 PM »

fred, i hope there's at least one retro model in the other half to be charged.

426

Events / buns

« on: September 10, 2010, 20:15:15 PM »

i'm afraid it's just me lads, dave is working. i'll be bringing fig rolls and marrietta biscuits if that's any good.

427

Events / sept fly in

« on: September 07, 2010, 01:55:47 AM »

plan to be there either sat or sun, sorry can't make both days. looking forward to some good flying. gb

428

For Sale / condor

« on: August 17, 2010, 19:41:29 PM »

hi ray,  i'll take the slope condor off you if it's still available for e125 if that's ok with you.
            i'm in limerick, so maybe we can meet somewhere in the midlands
            to complete the sale?

429

Jets / SR71 Blackbird first public show Duxford 2010

« on: July 30, 2010, 00:40:59 AM »

keith,
re tuning both eng's...
you're way beyond me on the tech's of freq's, harmonics etc. i just tune each eng to peak rev's then back off a notch or two on the main needle. then i stand over the c/l of the model and listen to the sound of each eng. a little tweaking is usually all that is required to get both eng's 'on song'. a bit of practise and you will know when things are right. patience and time spent on those eng's will reward you with a satisfying flight and a big grin on your face.
i have no knowledge or experience at all on el twins.[/quote]

430

Jets / twins

« on: July 30, 2010, 00:24:32 AM »

john is right about getting the eng's as close to centre line as possible. the cat is basically a pylon mounted wing, so it's very easy to get the eng's in there. i resurrected an old 'twintub', (yea, that's what it was called), a few years ago. 7ft span, parasol wing. took off on 2x 25 2-strokes, would fly around on one eng without a bother. the key was keeping the eng's close to c/l.  i then bought a hobbico 'twinstar' from tower hobbies,  flew very well, i'd certainly recommed it. it was designed for 2x25's but with a few mod's, i'm sure it could be converted to el. check out t. h. website for video.
i had a few eng out's with the twinstar. the chances of saving it depend on several things...
1   total concentration on the model all the time.
2   identify which eng has died as quickly as possible (that means              immediately!)
3   throttle back and get the rudder into the live eng . this will yaw the dead eng wing forward and (hopefully) prevent the live eng wing from banking so steeply that a crash is inevitable.    
4    when flying twins, always bring a black bag with you!

431

Jets / twin engine models

« on: July 29, 2010, 15:45:01 PM »

hi keith,
my tuppence worth on twins...
i've flown a few twins but no 3 or 4 eng models. the sound of 2 eng's 'on song' is, i have to say, a most beautiful sound indeed. nothing at all like a single 2-stroke screaming it's head off.
twins need the same care and attention when setting up the eng's as any model, and can be just as straight forward to fly. standard eng's and prop's are used. when running, the eng's must be tuned to produce a similar exhaust note, a musical ear is a big advantage here! because both prop's are turning anti-clock when viewed from the front, thrust lines are set up differently to counter torque and drag. the left hand eng could have 0-3 deg's right thrust, while the right hand eng could have 3-6 deg's right thrust.  
the fun really starts when one eng quits, as often happens. if the l eng quits, the r eng has to counter its own torque+drag of fuse + l wing, hence large r thrust. if the r eng gives up, then l eng torque tends to cancel fuse drag+r wing drag, therefore less r thrust required on l eng.
i just realised keith, all you asked about were contra- rotating prop's and you end up with a mini lecture on twin eng thrust lines.

432

For Sale / middle phase

« on: July 09, 2010, 13:59:00 PM »

middle phase has gone to a new home

433

For Sale / for sale

« on: July 06, 2010, 23:24:47 PM »

all items sold except middle phase kit.  anyone know of someone starting out in the hobby, this is an excellent model to start with.  just two servos, rx and battery required to fit in the plane.  anyone interested, just say the word.  E60 and it's yours!

434

For Sale / gliders for sale

« on: June 30, 2010, 01:32:30 AM »

hi anthony,
if you are still interested in the items for sale you might contact the seller re prices etc. i spoke to him today and he is keen to talk to you again.
regards,
gerryb.

435

Slope Soaring / retroplane '10

« on: June 30, 2010, 01:27:08 AM »

unfortunately for me i've had to pull out of the trip to retroplane '10.
hope everyone who does go has a ball.  make sure you take plenty of photos.  maybe next year......