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Member postings for Chris North 3

Here is a list of all the postings Chris North 3 has made in our forums. Click on a thread name to jump to the thread.

Thread: Mark’s Peggy Sue 2 Build
23/04/2020 02:42:57

Its looking fantastic. I am envious of your skills and patience!

Thread: Quick depron build plan needed for home flyer.
01/04/2020 06:26:10

Flite test spit fire or racer - both are easy to make from and fly great. I didn't have foam board so made mine from 5mm depron with packing tape on one side.


Thread: Peter Miller asks what next?
09/03/2020 05:00:01

Having read along with this thread, it seems that your ideas are not the problem here Peter but rather the ability to peak your interest enough to commit to the effort required. Perhaps then there is an opportunity here to identify someone (may I say younger without causing offense?) from this thread that is interested in getting into model design that could work with you to do all of the leg-work of getting your ideas on to paper and into the air. You could then act as director and mentor showing how to get the design from brain to drawing board to building board and into the air. While face to face is obviously the best, given all of the communication options available to us these days this could just as easily be done remotely.

RCM&E is always calling for ideas for new articles and so perhaps his could be a good follow on to your previous design article.

I know Lindsey Todd's articles on Renaissance covered a similar topic but - and no disrespect to Lindsey if he is reading - this was from the point of view of someone who has designed plenty of models and so some of the interesting parts, such as material sizing, were not really explained in much detail.

Anyway its just my opinion and worth any more than anybody else's, but it would be interesting to hear the process from both the new designer and the mentor's point of view for the same design activity.

Thread: FoamBoard Model anybody?.
11/02/2020 04:39:06

I would recommend the Flitest Spitfire (original speed build) - there is a free plan to download, a build video to follow on line and the plane flies great - I actually learnt to fly with one - plus it has a good all round appeal.

Everyone can either build their model at home or you could have a club night build along session.

Only suggestion I would make is to add some strength around the wing holding lugs to prevent them from pulling out of the foam in a unscheduled arrival. Ac couple of square of plastic from an old credit card or club card is ideal.

Thread: Oodalally - Build Log
09/12/2019 03:28:03

Looking good.

06/11/2019 04:58:46

Looking good Geoff. I love the idea of a laser but just not sure I would get much value out of it given the amount if building I'm doing. Following your build

Thread: Phoenix Flight Sim
31/10/2019 06:44:54

I may be wrong but I understood that Pheonix Sim was part of the Spektrum / Horizon brand as it was always bundled with their transmitters and had a number of the various Spektrum based planes. When they took over Greatplanes they also took over Real Flight sim and so rather than keeping both going they have chosed RF and closed Pheonix. This is why all the Horizon Hobby planes are now on RF instead.

I have found RF to be just as good and less graphic intensive

Thread: Futaba 10J NiMh Battery Problems
31/10/2019 04:04:15

Thanks for the feedback. Sounds as if new is the way to go!

Thread: Mark’s Peggy Sue 2 Build
30/10/2019 05:22:39

Great looking build and nice detailed build blog. I was thinking about PS2 as a next build but now I see what Peter is working on............

Thread: Futaba 10J NiMh Battery Problems
30/10/2019 01:02:40

Hello - I have a 4 cell 2000mAh NIMh battery in my 10J transmitter that came when I bought it a number of years ago. For various reasons I have not used the transmitted for around 2 years and now the battery is discharging very quickly.

I am using the transmitter on my simulator to get the fingers and thumbs back in action but the transmitter battery only lasts about an hour before I get a low voltage alarm.

I have tried charging the battery with the battery charger on the NIMh setting at 2A (=1C). It charges to full in around 10 mins and then discharges very quickly once back in the transmitter.

My question is is this pack dead or can it be resurrected? if so how do I go about doing this?

Alternatively can I use a lipo as an alternative to the MIMh Tx battery pack and if so what would be a suitable size?

Appreciate any advice

Thread: Forum members' new models: Let's see them.
29/10/2019 01:44:05

Cheating a little as this is not 100% finished as I need to add some wind screens and pilots but its close enough to be ready to maiden. Peter Miller's Ohmen, scratch built using the free plan from October 2018.20191028_101654.jpg20191028_101715.jpg20191028_101726.jpg20191028_101813.jpg20191028_101944.jpg

Thread: C No Ohmen
28/10/2019 08:28:52

So there are a few things left to do but essentially she is ready to fly - although for various reasons that may be a couple of weeks away.

Left to do:

  1. Adjust throws to correct max values;
  2. make up and fit windscreens;
  3. make up and fit rear head rest;
  4. cut a hole in the base of the hatch for cooling air to escape;
  5. find a couple of pilots;
  6. make up and add a few decals;
  7. buy some locktight and apply to the motor mount and wheel collet screws.

I had hoped this would be a quicker build that the Batty but again 6 months seems to be my time frame. Given that I generally have to travel every other week and when at home get to spend an hour a night, 3 or 4 times a week then I am fine with that - plus I find the building relaxing so have no problem how long it takes.

Thanks to all those that that gave support and advice along the way and especially to peter for your ongoing support.

I'll post another update in a few weeks time or whenever I get the chance to test fly her.

Looking forward to it!

28/10/2019 08:19:41

So with that it was time to clean up the work room and to take a few photos...and here they are:



A couple of arrows to show the CoG position - stole that ideal from your model Peter!


28/10/2019 08:15:57

Well this weekend I managed to get a few of the final items complete on the Ohmen.

With the rear end in place I was able to mark-up the horn locations for the rudder and elevators and once these were in place i could trim the snakes to length. This took a little juggling but after a bit of adjustment to get the servo arm lined up at the center position - the arm is never at 90 deg to the servo for some reason!

With all of the control complete the next task was to cut the undercarriage legs to length as i had previously bent them from a single piece of piano wire. I initially tried using a hack saw but soon realised that the cut off disc on the rotary tool was a much better option! Once cut the wheels were attached and collets installed to keep everything in place. A small flat surface was ground into the wire surface using a sanding disc (again on the rotary tool) to help key the collet grub srew.

The under carriage legs were inserted into the locating holes in the base of the fuselage and pushed home. Now I had contemplated buying some double 3mm wire clamps however the postage from the UK was twice the value of the clamp - insignificant I know but its the principle!

So instead I used some flat clamps and made up a couple of guide rails from 3mm ply that I covered and then aligned either side of the under carriage legs before drilling some pilot holes and then screwing everything in place. I am sure that 2 clamps would have been more than enough but 3 seemed a better choice with the full width rails.

And then all of a the main build was done ....well almost but we'll come on to that shortly!

25/10/2019 07:52:00

I see that the control throws are on the build article summary so apologies

25/10/2019 05:00:02

The fin and horizontal stabilizer were dry fitted ensuring the tail was level and centralised. While in position the film on the bottom of the stabilizer was marked and then, using Trevor’s suggestion, was cut away using a steel ruler and the tip of the soldering iron. This was repeated on the top around the fin and with the film peeled away the fin was centralised on the stabilizer and glued in position using a couple of engineer’s squares to ensure it remained at vertical. This was set aside overnight.

Having completed the aileron connections, I made a start on the rudder and elevator controls. For these I am using snakes which seem to be very easy to set-up. To position the servos , I inserted a snake into one of the outer tubes and then adjusted the servo on the pre-installed rails so that the snake was as straight as possible. This was repeated for the second servo – again I forgot to take a picture.

I was planning on installing the rudder and elevator control horns before attaching the tail section but found that it was a bit difficult to hold the fuselage, the tail and the control horn all at the same time. I tried using some tape to secure the tail as shown but eventually decided to install the tail so that everything was secure in position.

trying to position everything with one pair of hands..


Installing the tail and making sure that it is level by ensuring it is the same height either side20191024_213825.jpg

Using a tape measure from the hatch latch back tot he tip of the stabiliser on each side to make sure that is is central.20191024_213906.jpg

With everything in position it has been left to dry overnight so hopefully tonight and over the weekend I can get most of this completed.

A quick question for Peter - apologies if this is in the build article somewhere - but what do you recommend for the travel on the control surfaces for the first flight as I don't see any mention on the plan?

25/10/2019 04:42:22

The servo plates have been cut free from the wing and servos installed. Extension leads have been attached and their joints sellotaped to ensure they do not come apart. The film was removed from the access holes on the top of each wing and the pre-installed strings used to pull the cables through. The length of the cable tubes are actually quite short so it may have been possible to thread the cables without the strings but it is certainly much easier and quicker with them.

As suspected, one of the plates had moved slightly during covering and so once cut free the covering pattern did not match up. This was easily fixed by removing the covering and reapplying an new section that did match.

I decided to use metal push rods that I had in the spares bin on the ailerons. These were cut roughly to length and then inserted through the push rod clamps installed on the servo arms. With the clevis installed into the horn, the horn was then positioned such that the holes lined up with the hinge gap. Positions were marked, pilot holes drilled and the horns screwed in place using their backing plates.

Once everything has been set-up and throws adjusted I will trim the linkages to a more approriate length20191024_211949.jpg

25/10/2019 02:25:19

Well, other things have been getting in the way recently and so I have only ben tinkering with the Ohmen over the past couple of weeks. That said things continue to progress although when I do do something, I forget to take photos. Anyway, here is a quick update before the weekend.

The cowl is now covered and finished. I started by trying to cover it in a single sheet of film but my ability did not match my assumptions and I was getting a large number of wrinkles around the spinner ring that I couldn’t get out. I am sure others would be able to achieve it however I took the easy way out and covered it using 4 or 5 pieces. It turned out ok although I need to go over it and remove the white glue lines that have shown at some of the overlap edges where the film has shrunk. It looks fine from a distance and so is not a big deal ... but I know they are there!

While the cowl looks and fits fine I have to say I’m not loving it. I followed the plan (I think) but my air vent at the front is wider than it is tall whereas when I look at pictures of Peter’s model it is taller than it is wide. Maybe I have made it wrong but it looks a bit odd and so I am contemplating making a new cowl. Its certainly not urgent nor will it stop the model flying but something that I notice.

All of the control surfaces are now glued into position and moving freely. One of the elevator hinges is a little stiffer than the rest due to some glue ingress but it is not overly tight and should be fine. Its certainly not stiff enough to add extra resistance to the servo. I must remember to protect the hinge pins with Vaseline next time. Something simple that saves heartache later (or would have!)

15/10/2019 05:13:02

So what to do about the front of the fuselage? At first I thought a simple transition from red to white to match the wings but after mocking up this looked a bit boring. So, given that a little extra effort often results in a lot better outcome, I decided to make it a bit more subtle.

At first I thought that a sweeping curve would look great but this meant making sure everything matched on both sides and so to make this easier I simply kept it straight on both sides. 20191013_215051.jpg

And then finished the front by adding red to the top of the fwd fuselage20191014_204651.jpg

Thinking that the cockpit would look a little strange in white I went ahead and covered this in red too.20191014_213559.jpg

So this is where I am up to. I just need to open the cockpits and have a think about whether I need more trim aft of the hatch - I am thinking a triangle of red to tie everything in

What I have realised is that I have not made the head rest to go behind the aft cockpit but this can be added after.

When attaching the head rest or indeed attaching the horizontal stabilizer and fin how do people remove the film without cutting into the wood below? I am assuming the easiest way is to use the knife but I suspect that my heavy handedness will result in some scoring of the wood underneath. I would be glad to hear any ideas or tips

15/10/2019 05:00:20

With white applied to both sides, film was then added to the top of the rear fuselage20191013_205950.jpg

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