RCMF Donations

Enjoy using RCMF? How about a wee donation to help us keep you in the style to which you've become accustomed?

Welcome to RCMF. Please login or sign up.

May 29, 2020, 11:18:27 am

Login with username, password and session length

Mick Reeves Lightning build

Started by HarryC, May 31, 2010, 23:12:50 pm

Previous topic - Next topic

0 Members and 1 Guest are viewing this topic.

THE BLACKBIRD

Hi im new to the forum and have just read this thread all the way through, I was going to buy the MR Lightning but with all that this thread has shown to be wrong with the kit I don't think ill bother now
Seems very expensive for the trouble you get
Lovely build Harry
Thank you
Tony
The man that never made a mistake
Never made anything

Craig G

None of the problems are insurmountable, and some are more of a builder's choice than genuine issue. In my opinion well worth the money.

THE BLACKBIRD

I Craig I see you have the Lightning kit, do you have any issues with it such as the hatch that fits nowhere, that for one thing should never be sold as is, and copper plumbing clips to hold the tail plane is nothing short of crude
But I do like the Lightning and it fly's well and looks good
The man that never made a mistake
Never made anything

Craig G

Yes, my hatch fit and for that matter the fuse-half mating is not spectacular. Ideally these would need little to no work but I'm ok making the adjustments. Still haven't decided if the copper straps will stay. Crude they may be but with balanced stabilators I think they're up to the task.

CG

HarryC

The Lightning is fine if you regard it as a basic outline onto which you apply your thoughts on model structures at every step. If you just assemble it as it is, it will not last long imo.
The choices are: Airworld lightning which is very big; design your own; MR Lightning which is reasonable size. If I was to build another Lightning I would get another MR without hesitation especially as I now know even more mods I would make!

THE BLACKBIRD

Thats an interesting statement Harry that you would buy another one, cheered me up a bit because I was looking forward to getting one until I read your thread.
I have just scratch built a hunter for a Jetcat 100rx, the Shane Harding one fly's very well and thought I would do the lightning next for the same turbine as I have two do you think a 100 rx is big enough
Tony
The man that never made a mistake
Never made anything

HarryC

I can't say if 100 is enough. Mine needs much more but it has the weight of extra strength and extra systems like the retract emergency blow down system, big and sturdy fuel tank, brake chute, main wheel brakes etc. It is a big model.

HarryC

June 16, 2014, 09:19:32 am #207 Last Edit: June 16, 2014, 09:36:48 am by HarryC
Hooray, I can at last report a good flying session yesterday with the Lightning, no real problems, decent handling, low-ish passes and doing its first vertical aerobatics - 1/2 cubans, and a loop.  Also getting the hang of turning it - it's like my Typhoon it needs a lot of back pressure to crank it round rather than be gentle and end up with massive radius turns ( both have similar highly swept delta wings, the Lightning has cut outs at the t/e root!).  On flight #1 I was shaking, by flight #3 I was enjoying it.

There is plenty still to be done to get it just right for me but now it is just fine tuning, the fundamentals are all good.

Shocked that it is 13 months since I last flew it and had all those problems.  It took a while to work out what I think might have been the cause of the pitch control doing its own thing, sorting that was fairly easy and since the problem has gone it seems to be right.  Took a guess that even with the clearance I had given it, the tailplane roots were starting to jam against the fuselage as high speed airflow flexes the mechanism backwards.  It took a very hard pull back on the tailplanes to get them to jam but it was just possible, and since Colin Straus lost his RCJI mag review model to the tails jamming I had left what I thought was a decent gap.  So I removed even more root from the tailplanes and left a big gap, also fitted yet more powerful servos.  Yesterday the pitch control was fault-free.  CG is bang on MR's instructions, pitch is still a bit sensitive but can be easily adjusted now.  Roll rate is now spot on, gyro gain needs increasing and I can work gradually on that.  There was no visible fishtailing so I have not yet felt any need to bring in the rudder gyro.  Ground steering is poor, it is sensitive but never centers so it wanders left or right.  Start of take off run has to be at 1/2 power to keep steering control until the fin has enough airflow to stabilise the yaw then full power can be hit.  The flickering reheat lights work well.

A major mod I made recently was to replace the MR retracts with custom made retracts from Premier retracts
http://kingfisher-aviation.com/premier-retracts/
He made me the 3 units to the special retract angles and matched the low profiles and the mounting holes dimensions for a price I think was very good value so he will be my first choice for all retracts from now.  The cylinders are a considerably larger diameter than the MR units so they have no problem getting the wheels down against the airflow.  However the units are longer overall so I had to open up the wing and dremel out some holes in ribs to get them in.

I gave up with the MR metal coat, I can lay it down well but I found it too thin to sand it down flat, it would wrinkle and tear, so what I had laid down had to be removed and that takes forever to do.  Steve Elias gave me a piece of real Flite-metal to try and it worked a dream (it's quite a bit thicker) so I ordered a shed load of it from the USA ( http://www.flitemetal.com/ ).  So far I have done the tailplanes and they look really good, now with successful flying of the model I will crack on and metal the rest of it


JohnMac

I must say that is good to hear Harry. When (if) I ever get around to my AW F2a I will cover it in flight metal, but I may do my FEJ Sabre in it first. Having seen a few models covered this way, it is the only realistic way of doing a nataural aluminium aircraft.
Keep us posted.
John

HarryC

The front half of the fuz is now flite metalled as photo,  back half is partly done.  The aluminium sheet can be  carefully coaxed out thinner and longer to form around compound curves or down into the figure of 8 at the back end.
lots more to do still. It has to be sanded flat and smooth, it is aluminium so that takes some doing over a large area!

STORM


JohnMac


selleri

Sverrir  - Icelandic Volcano Yeti - RCMF Tech Team

HarryC

I will have the Lightning on display at the LMA Gaydon show this Sunday.
The aluminium plating is complete (what a lot of work that was!) and I am hurriedly applying paint and decals to have it looking mostly complete for the show.

STORM

Well done Harry, looking forward to seeing it.  :af

HarryC

October 26, 2014, 15:08:00 pm #216 Last Edit: October 26, 2014, 15:16:44 pm by HarryC
At LMA Gaydon

Thorjet

Absolutely outstanding work Harry, worth every hour spent on her!

Stunning model  :uk:

trebor

Looks fantastic Harry, looking forward to seeing it in the air.

Rob

RGN

I saw it at Gaydon, too - agree with the comments above. This is a stunning model!

Richard
"I always cheer up immensely if an attack is particularly wounding because I think, well, if they attack one personally, it means they have not a single political argument left." - Margaret Thatcher

Pup Cam

Quote from: RGN on October 26, 2014, 19:48:20 pm
I saw it at Gaydon, too - agree with the comments above. This is a stunning model!


Me too, very nice indeed  :af

Alan
Still distracted by a 1953 AJS 16MS and now a 1939 BSA 250 too!

STORM

Looks great in flesh Harry, good job, well done mate!

HarryC

Was out flying the Lightning today, looks fantastic in natural light though a bit dazzling in direct sun!  Should have some photos of it flying soon.

HarryC

Photos courtesy of Dick Spreadbury

jetster

Spectacular model Harry, quite an achievement.

THE BLACKBIRD

Enjoyed your article in the RCJI Harry
It really is a beautiful model,
The man that never made a mistake
Never made anything

HarryC

I have just completed converting the Lightning over to my new Jeti radio and had a glorious day with it at the weekend, getting it tuned back in to my preferences.  The Weatronic radio that came out had gyros built in, so I had to add in an ACT Fuzzy Pro gyro for the ailerons.  First flight with the Jeti was done with gyro off while I learned how it behaved and what fundamental changes I wanted to the settings in the Jeti, and it was squirrely, jittery, and uncomfortable.  On the second flight I turned on the aileron gyro and immediately had a pleasant handling model.  Making passes along the runway then turning away as I pass the pilots' box and lighting the 'burners for full effect looks so good!  Even the brake parachute managed to work perfectly on one landing and that looks great.

One of the big reasons I chose Weatronic and then Jeti is because I have a thing for metal clad jets which have the potential to give 2.4G signals a hard time.  I don't think the Wea or Jeti are any better at getting the signal to the model than any other brand, what they offer me is data recording and real time numbers to let me know how well the rx are picking up the signal and therefore to really understand how close the model is to the edge of reception.  I especially like the feature on the Jeti where I flick a switch and it speaks out the lowest two antenna readings to me, I do that when the model is at its farthest from me so I get to learn immediately if the metal coating is causing me real dangers, or if the signal is fine.  After landing I can also bring up a graph on the tx screen of the rssi for each of the 4 aerials, and LQI for each of the two rx, of the entire flight to see if there were any momentary drop outs.  I am very pleased to see that the numbers and graphs are pretty much identical to my non-metalled jets.  One pair of aerials is in the blue spine outside the metal coating, and the other pair are at the bottom of the fuselage at a patch painted with humbrol silver instead of being metal clad.



STORM

I knew you'd like it, best money I ever spent!

Daveeast

Any Lighting flyers out there? I have just taken on a build, decided on a new set of Proskin wings, and half a mind about a Brake Chute and expertise on that?


THE BLACKBIRD

Are we going to see a build thread on here of you progress, i for one am following
Tony
The man that never made a mistake
Never made anything

Daveeast

No message is associated with this attachment.A few Picture on progress to date.