Jump to content

chris Ibbotson

Members
  • Posts

    506
  • Joined

  • Last visited

    Never

Posts posted by chris Ibbotson

  1. Hi Ken,

    Been there to-day for the first time, the weather was almost perfect blue skies and the wind was almost straight down the runway.

    The LMA pilots were fantastic and showed some absolutely amazing flying skills with their aircrafts. The limited trade presence was evident:-but they were positive about our sport/hobby's future and some bargains were to be had.

    I bought a Blair RAF Se5a kit for £40 (should be £70).

    There was good food to eat at reasonable prices .

    The runway was split into two to allow the big boys / Jet jockeys to fly while at the other end was the "regular" flyers doing there thing

    My highlight of the day was a young lady called Fiona.

    All she wanted to do was build and fly a model aircraft, she got her chance of flying thanks' to "buddy" (she was 3yrs old) the rest is down to parents. The future is not lost.

    If you get the chance go to-morrow.

    Great day out

    Chris and Bev

  2. Hi All

    A very nice choice for a build,. As has been said an expensive build.

    You could use a quad copter speed controller for the fans "Electriflier" used one to power 4 engines. They were all perfectly synchronised.smiley

    Ray I have bought FMS fans for all the TN jets including the E.E. Frightning.cheeky

    Will be following with interest.

    regards

    Chris

  3. Thanks' for the replies,

    Cymaz I jumped the gun and ordered the "Airhogs remote control TB 2" it arrives this Wednesday and I will be looking to scale it up. I have Visio CAD software to do the drawings.

    Kiwikid, that TB2 sloper looks fantasticwink have you any details of it

    I live on the East coast very close to "flyable" cliff tops (3 minute walk) so I could do a sloper. The other option is to use my 2 FMS 50mm EDF's as used by Tony Nijhuis in his jets, possibly with a central motor/propeller like a helicopter rotor but built inside the body to provide lift. I would use Depron/wood to build because of the light weight it produces.

    This months RCM&E article by Alex Whittaker did show a TB 2 in balsa by U-build, when you look at the website it is not listed or mentioned. Could a moderator try to find out where it came from.thumbs up

    Thanks again

    Chris

  4. Hi all,

    I'm thinking of a winter build and I need your help please.

    Don't ask why but I like the idea of building Gerry Andersons "Thunderbird 2".

    I have searched the internet looking for free down load plans but to no avail.

    The question is are there any plans available for this and if so where.

    Thanks' in anticipation

    Chris

  5. Help please,

    Has any one got the AS3X receiver settings for a Radian 2.6mt glider?

    I’ve bound the receiver-that’s ok, the transmitter works the rudder & elevator as per normal. When I switch the “stability” on only the rudder responds to axis movement. The elevator will not respond. The rudder reacts with very rapid “juddery” movement.

    I have an Opterra BNF with AS3X and when in “safe” the surfaces move smoothly and stay in the correction position until the axis is manually returned to level. I am using a laptop to program the receiver.

    Any ideas please.

    Chris

  6. To an outstanding Engineer and a true Gentleman in his occupation and his hobby.

    I had the great pleasure of meeting Geoff many times at the model shop when I had gone in for advice with my builds. He always showed great interest and bestowed enthusiasm and advice to me.

    Thank you Geoff, it will never be forgotten.

    R.I.P Geoff Noble

  7. Hi Peter,

    Try using "Eezy-Coat" water based Pu sealer. Apply one coat to the wing using a good quality synthetic brush( 1to 2 inch wide) and let fully dry over-night and then sand with 800 grit wet/dry and apply a second coat . Allow to fully dry over-night and then sand with 1000 grit wet/dry and using tack rags to remove any dust. Superb finish and superb product.

    As for the comment about film overlaps not staying stuck use a product called "prymol" follow the instructions on the tin and this will enhance the overlap/glue joint strength.

    Used these both for the last 6 years and never failed.

  8. Martian,

    Just picked up on this build and I've found it very informative and interesting. I have to say a very nice build quality and finish you have achieved.thumbs up

    Hope she flies as well as she looks.

    Any chance of pick's/video of the maidensmiley

    Best regards

    Chris

  9. A big thank-you to Charles for doing the maiden and to Roy for the fab pictures.

    Thank-you to all who have followed this build. It's always encouraging to know people are following.

    So what have I learnt from this build?dont know

    1. Keep the PU glue joints clean, i.e. wipe excess glue off.

    I found I could save 50% weight by doing this.

    2. Check and double check electrical connections for correct polarity after soldering

    joints. Cost me a ESC & battery.crying 2

    3. You can PU glue blue foam and still (hot wire) cut the join.enlightened

    4. Don't over engineer the structure.

    Keep it simple and accurate to fly.

    Since the maiden I've had a tidy up in hanger one.

    dscn2743.jpg

    So what's next you may askthinking

    Watch this space.smiley

    Till next time

    Chris

  10. Its that catch up time, again.

    As I'm close to the final part of the build I took the almost completed airframe to my (LMS) for scrutiny by (Electriflier and Pilot Chuckles) We/They looked at the build and saw a potential problem with the composite trailing edge of the main wing. A thickness of 9/10mm.

    01.jpg

    This was a balsa trailing edge with a 3mm depron skin on both sides. The consensus opinion was that the air flow would just fall off and cause turbulence and degrade control. The other issue was could the small surface area of the aileron be effective to control the aircraft. The solution was to remove the aileron and replace with a solid balsa trailing edge.

    02.jpgThis would add 10mm to the wing cord and add a more ridged fixing for the elevator horns. After gluing, sanding and painting.

    03.jpg

    04.jpg

    05.jpg

    A blind man on a galloping horse wouldn't/couldn't see the change. Would they.indecision

    Now I've got my contra props (Thanks "Pilot Chuckle", LMS Rotherham).smiley

    I thought it might be useful to give you some facts and figures of my build to date.

    Using the 8x5 contra props and a 4s 30c 3200mAh battery.

    I recorded 540 Watts at 17Amp per motor(well within limits of power draw of each motor). This should give a flight time of about 5.5 min on full power.

    The flying weight, including batteries is 4lb 12oz.

    I know I have plenty of power on tap to fly, which is nice.wink 2

    The big question I have to ask is how the extension of the trailing edge is going to affect the CofG location.

    Please advise.

    regards

    Chris

  11. It's got to that part of the build where I am watching paint dry.nerd

    01.jpgThe plane was painted twice with each coat sanded down using wet and dry (as before) then a fine polish with brasso and car polish to get a shine.

    02.jpg

    03.jpg

    Masking of the air frame was done and paint applied

    04.jpg

    05.jpgThe windows were marked out using a card stencil

    06.jpg

    07.jpg

    Silver solar trim was cut and applied

    08.jpgThe windows were highlighted with black trim and marker pen

    09.jpg

    010.jpg011.jpg

    The main wing was attached

    011.jpg

    and out side pick's were taken

    012.jpg

    A small breeze blew and she took a take of position.

    013.jpg

    Is this a good omenindecision

    Till the next time

    Thank you

    Chris

  12. I was not happy with the fitting of the hatch to the fuzz .01.jpg

    02.jpg

    So 3mm depron was glued and sanded until a satisfactory fit was achieved.

    03.jpg

    |04.jpg

    The "nav" lights were then installed in there final position.

    05.jpg

    Time now for a cautionary tale.

    I felt the need to look at the light show on the wing. So I connected an ESC & receiver and a lipo battery to produce a 4.8 volt supply for the nav lights.

    I had powered the lights previous to skinning the main wing and they worked fine.

    I don't have any photo's of what happened next as it was all a bit quick. The battery was connected and within milliseconds the battery was disconnected as it had reached a temperature that my hand could not stand as well as swelling in an alarming way. The battery was thrown out of the garage on to the concrete drive and left for over an hour to cool down. The ESC was so hot it had melted the plastic covering on the heat sink.

    I could not understand what had gone wrong, the ESC had been in use in another plane, the Rx had been in use in the same plane with no problems. The light came on and the penny dropped. I had converted from JST to XT 60 connectors on all batteries and ESC's.

    The fault has been found to be my incorrect connection of the ESC. I had soldered a positive wire to the negative terminal of the connector and neg to pos. This gave a direct short to the battery. In the words of Dell boy What a Pl****er.

    I have now looked and double checked all of my converted connectors.

    All I can say is check and double check.

    This has cost me a battery and an ESC.

  13. Martian, thank you for your concern about the extra work. To me it was extra pleasure because I enjoy building and I corrected my error. Thanks.yes

    So down to work.

    The wing wiring was tidied up as well as making sure all servo's and connections worked. As they all worked . The top wing was now skinned with 3mm depron.

    01.jpg

    The full wing was skinned and the wing vortex tips were glued in place using P.U glue for a smoother join when sanded down.

    02.jpg

    03.jpg

    The main wing was placed in position and the four wing bolts were drilled out.

    04.jpg

    The rudder and elevator snakes were fitted using 'Tie' wraps and glued with 5min epoxy glue.

    05.jpg

    06.jpg

    The top rear deck was now able to be covered with 6mm depron.

    07.jpg

    The rear stabiliser's were aligned with the main wing and using P.U glue was glued in place.

    Look at the gap between the rear wing and the main wing.nerd

    08.jpg

    09.jpg

    10.jpg

    The result to date, to me , is a nice looking partially built Islander.

    11.jpg

    The next stage is the glassing of the plane. So it might be a little while till the next update, due to drying time.

    Have a relaxing Easter break and I will be back with more updates.

    Regards

    Chris

  14. Now, it's time to respond to Martian.

    Firstly.

    Thank you for saying you enjoy following my build, lets hope this continues.

    Secondly.

    You noticed my "Willy Wonkar" moment.

    It has to be said you have passed the observation test and you now get 10 House points for being observant.yes

    I totally agree with you that I had got the profile wrong.

    So a total rebuild of the fairings was required.

    The old fairing was removed.

    01.jpg

    and using 1/2 inch thick balsa to make the new fairing sides.This made the front face 1 inch thick/wide.

    02.jpg

    03.jpg

    Cutting and sanding got to this profile.

    04.jpg

    You can see the change in the profile from old to new.

    05.jpg

    06.jpg

    07.jpg

    08.jpg

    Thank you Martian.

    Keep the faith and keep following .

    Chris

  15. Wow!!

    I'm amazed at the volume of people looking at my B/log, totally phased out with the numbers.

    In reply to Keith.

    "Orville" flies better than me (just ask Pilot Chuckles and Electriflier). I take off from a hand launch and arrive on a cricket pitch , if I'm lucky.embarrassed

    Colin, you say "can't see me going wrong with this one". Just you wait and see.embarrassed

  16. Thank you for the kind words of encouragement. Much appreciated.

    Well a bit of good luck, the 'Wi-fi' was out last night. If the cat's away the mice will play So lets play!

    The main U/C legs needed strengthening, this was done using a brass strut(6.5mm X 1.5mm)

    01.jpg

    This was silver soldered to the main leg.

    02.jpg

    The U/C main legs were given shape by using 1/2" balsa L/E and 1/4" balsa sheet to form the profile.

    03.jpg

    After a bit of sanding and cutting the rear blue foam 'pods' fitted to the contour of the balsa leg covering.

    04.jpg

    They now await filling and sanding when they are bolted down on the main wing.

    05.jpg

    Regards

    Chris

  17. I forgot to say on my last B/log that the one piece hatch is held down with 4 rare earth magnets and by the main wing when bolted down.

    01.jpg

    I aligned the magnets by drilling a shallow 8mm hole and using a wood workers dowel locator to mark the other mating surface. The black metal 8mm plugs has a centred point to mark the opposite surface.

    02.jpg

    03.jpg

    Next a blue foam block was pre shaped and glued(P.U) on the front ply former

    04.jpg

    When the glue was dry the "patient" was anesthetised and prepared for Rhinoplasty surgery (nose job)

    05.jpg

    Using a combination of a scalpel and a sanding block the nose was slowly formed and shaped

    06.jpg

    07.jpgThe hatch and nose sanded to shape.

    08.jpg

    09.jpg

    The tail section or "Rearplasty" was formed using blue foam glued in place with P.U and sanded to shape etc.

    10.jpg

    11.jpg

    I've found that P.U. joints sand a lot smoother than Por glued joints.

    The wing wiring was tidied up ready for testing of the servo's and motor connectors before I skin the main top wing.

    12.jpg

    Under the grey tape is the landing light controller box.

    Next on my list is strengthening of the main U/C legs and the skinning of the main wing.

    As I always say thank you for following.

    Regards

    Chris

  18. I've been a little busy recently organising with the wife ,my "ready made" daughters wedding ( Feb 29th ) Had 3 days of festivities and great enjoyment.

    So it's time to do an up-date.

    I was thinking about a hatch cover for access. I'd got some spare blue foam that was too small to cover the openings and not having the time to buy more. I had to think out of the box. I'm using a P.U. based blue foam and I'm using P.U. glue.

    So why not glue the blocks together , let them fully dry and see if you could hot-wire cut them.

    1.jpg

    2.jpg

    The answer is a resounding big yes.

    3.jpg

    This is the location of one section of the joined/cut blocks.

    4.jpg

    The foam had to be cut to fit under the leading edge. So templates were made to hot-wire the profile.

    5.jpg

    Cut to profile.

    6.jpg

    Other sections of glued blue foam were made.

    7.jpg

    The lower nose section was cut first using templates.

    The final finish was below par. Not the best result

    8.jpg

    The next section was the sloping cabin front.

    9.jpg

    The lower front had to be cut to align with the cabin front.

    10.jpg

    11.jpg

    These were glued and held in place with sticky tape until dry.

    12.jpg

    13.jpg

    Glue dried and tape removed.

    14.jpg

    The top section was cut to give a radius curve at the front and a flat section at the L.E. of the wing.

    15.jpg

    The top section was cut and sanded to align with the fuzz and cabin front. Light filler was applied and allowed to dry

    16.jpg

    The wing was unbolted and the full nose access removed.

    17.jpg

    and sanded and refitted.

    18.jpg

    If thing's go to plan I might be doing a bit of cosmetic surgery next. Watch this space.

    Thanks for following:

    Till next time.

    Chris

  19. I sound like the local "copper"

    "Evening All" I'm back

    Now that I had made a rear stabiliser. It was time to align it to the "fuzz".

    1.jpg

    6mm depron doublers were glued /around all the insides of the "fuzz". These were then glued to the top/bottom of the depron skin So that I could put a small radius on the skin edges.

    I knew the work bench was level

    2.jpg

    and I knew the basic "fuzz" was level.

    4.jpg

    The rear section proved level. The front wing location proved level

    The rear wing was pinned down and the level checked.

    5.jpg

    The main wing was aligned and if you look closely you will see 4 holes drilled to be enlarged for captive wing bolts to be fitted.

    6.jpg

    All measurements of the wings were checked and double checked for alignment. These were found to be as required and I think this as good as it gets.

    7.jpg

    As I've said before thank you for following. It's not a case of replies, it's a case of seeing people watching my B/log, that's what counts.

    Thank you

    Chris

  20. Sorry gent's my computer died and I lost a lot of build pictures . What I'd like is a pointy stick and get Bill Gates in a dark alley to show him what I think of Win 10.

    So I apologise for the quality of the pictures and continuity of pictures.

    My next part of the build was the tail feathers. Without these fitted and aligned I cannot fit and align the main wing section.

    So do I build a balsa wing as per plan or not.

    1.jpg

    Well I did say this was a composite depron /wood build.

    So here we go.

    2.jpg

    The upright stabiliser was built with 1/4" sq balsa leading edge and 6mm depron, using PU glue and clamps to hold and stabilise all the glue interfaces. 6mm and 1/4"" are a little different in thickness. So a plane was used to reduce the balsa, plus a little sanding and filler.

    3.jpg

    The rear wing was built first built using the same method but because of loss of info and picks I can't show the build.

    The rear upright stabiliser and rudder was hinged.

    I thought the rudder should be 6mm balsa for stability.

    4.jpg

    completed parts cut to fit.

    5.jpg

    6.jpg

    7.jpg

    parts fitted and marked to be in alignment with the fuz.

    The black line is the top of the 6mm depron top skin.

    I'll try to do a proper update very soon.

    regards Chris

  21. Hi Electriflier,

    This a great build and fascinating to watch and follow.

    Seems to me this Vulcan is having the same problems as XH558 did, problem of parts availability.

    Now you have scavenged the servos from the 100" Vulcan, will she be grounded du to lack of certification.wink 2

    I've had a look at my servo stock and found 4 new 17g (same as yours) which you can use if you need, just ask.

    regards

    Chris

  22. Evening every one, It's that time again to try catch-up on the build, so here we go.

    The nose leg required to be made semi scale

    1.jpg

    to convert from single leg to double leg the steering servo was fitted first

    2.jpg

    then the lower leg was duplicated and silver soldered in place.

    3.jpg

    Next the 6mm depron sides were cut

    4.jpg

    It was at this point that I realised that the location of the rudder/elevator servos were in conflict with the proposed front wing mounting plate. The servos needed to be relocated further back to allow access for my fat fingers. So this was done.

    5.jpg

    The ply plate base felt a little flexible after the changes so a 1/8"x 1/2" hard wood spar was added for strength. Yes I know it's adding weight, but for the right reason I believe.

    6.jpg

    The first wing mounting plate was glued in place. You can see why I had to move the servos and bracing the ply sides to keep them straight while glue was drying.

    7.jpg

    Both plates glued in place.

    8.jpg

    The wing plates were screwed through the outer 1/8" ply side for added strength because this is the main stress/load area of the fuzz.

    Two front lower nose formers were glued in place as well as 6mm depron spars for the lower mid section of the fuzz sides.

    9.jpg

    The 6mm depron sides were glued using P.U glue and a little help from a heavy weight to hold things in place.

    10.jpg

    The rear sides were clamped in alignment using 1/4" sq hard wood.

    11.jpg

    Three 6mm depron formers were cut/cored out and glued in place

    12.jpg

    Alignment was confirmed using a taught string from the front c/l to the rear c/l

    13.jpg

    I'm happy so far with the build to date

    14.jpg

    15.jpg

    I hope this update is acceptable, as all I seem to do is cut and glue depron. Nothing earth shattering or ground breaking. But then I am enjoying the build ,which is what It's all about.

    Thanks' for looking and following.

    Till next time.

    Chris.

×
×
  • Create New...