|
|
08-22-2012, 10:23 PM | #21 |
Level 3 Supporter
★ Site Supporter ★
I am: Gary L
Join Date: Aug 2008
Location: Tecumseh, Ontario
Feedback: 125 / 100%
Posts: 8,689
Total Props: 101
|
Re: 1/6 CF-100 Canuck Mk.4b
Looking forward to posts of your progress. Always interesting to see what ideas and solutions to problems others come up with, (one of the reasons the CIA was reportedly wandering the flight lines at Oskosh).
I may lend you the bio my friend wrote once he retired from the RCAF. He has a few tales to tell of the "Clunk". Off topic are some regarding the CF-104's he flew in Germany. One never made it into the book, but raises the hackles nevertheless. Climbing vertically through the clouds he burst into clear skies...........right between the wing and horizontal tail on a B-52! Where are you moving to? If near here I'd offer any help I can.
__________________
I know there's money in aviation........I put it there! |
. |
Sponsored Links - Subscribe to remove this ad. |
|
08-22-2012, 11:01 PM | #22 |
RCC Junior Contributor
I am: Mark E.
Join Date: Aug 2012
Location: Winnipeg, Manitoba
Radio of choice:
Spektrum DX18 # of RCs: 1
Feedback: 0 / 0%
Posts: 189
Total Props: 4
|
Re: 1/6 CF-100 Canuck Mk.4b
Cougar,
It'll be a short stint on the East Coast, followed there after to either coast. Time will tell. I'll know more in the next while. Until then though, I think I've figured out a bit more on the question of total weight, and am looking at a rough dry weight of 30-35lbs, and allowing for 10-15 lbs of fuel This being said though, I will start to work on the cockpit layout. It'll be fun to show what can be done with plastic, imagination, and a whole lot of swearing and gluing fingers together! I'm not sure about the rest of the lights, but the reflector gunsight will be lighting up in the gunsight reflector glass. The more I think about it, the more that I feel I'd be building the instrument panels to represent a static and stationary aircraft. Sure, there would be a couple of figures just sitting and backing in the sun, but as neat as moving feet and hands would be, the only "true" time this would be happening would be while the aircraft is flying or in motion, and more often than not, the only time one would be able to look inside and see would be when she'd be stationary. So, yeah, not much of a point to adding a "flying" look. But yes, once the canopy is closed, and the aircraft is moving, what is visible will be highly focused on. Still a lot of planning to do, but, one step at a time right? There is a Hawk that was made by a guy down in NZ, that's all I can get from the video clip, but seeing it taxiing by with all the attention given to the details of the visible sections is really breath taking. I really would like to combine as best as possible the modelling of fine details as well as keeping it a good flying aircraft. Planning, planning, planning, and more planning... slowly though, some pieces are starting to fall into place, and a final plan is being formulated. Soon enough I hope to have a solid CF-100 flying about and doing some fun maneuvering. In time. Cheers, Mark. Last edited by Mark_WCE; 08-23-2012 at 12:42 AM. |
. |
08-23-2012, 12:47 PM | #23 |
RCC Junior Contributor
I am: Mark E.
Join Date: Aug 2012
Location: Winnipeg, Manitoba
Radio of choice:
Spektrum DX18 # of RCs: 1
Feedback: 0 / 0%
Posts: 189
Total Props: 4
|
Re: 1/6 CF-100 Canuck Mk.4b
So, the planning and fun for the 1/6 scale cockpit is beginning.
I will be waiting for the plans to arrive and then going through carefully to determine the measurements of the cockpit itself. As the sidewalls of the cockpit are wider than the canopy opening, I need to determin how exactly I'll be able to remove the cockpit tub from the fuselage, or more specifically, if I will want to (or have to) worry about that at all. As the cockpit sits directly overtop of the nose wheel bay, I was concerned about the linkage connections and retracts for the nose wheel. In going about the design of the Canuck, and having the nose section forward of the nosewheel/cockpit being of a design that allows to remove the nose as a whole, a few ideas came to mind. As in the picture above, you can see how the nose can be removed. On the "bulkhead" that will be mounted forward of the nose wheel bay and the cockpit, I can mount the servo for the nose gear (much better to mount it there, rather than using a longer servo control arm and mounting it in the back). As well, all the mechanics of the retracting system (looking at the Robart 158S) can be not only mounted in the wheel bay appropriately, but used to give a fairly accurate scale effect of replicating what the nose gear actually looked like. There will be no need for anything protruding UP through the roof of the wheel bay/floor of the cockpit In short, I will have no need or reason to remove the cockpit, as it is just going to be there for looks, and looks alone. So, with that in mind, there are a few things that needed to be set first: A. Weight - no matter what, the overall 'curb' on adding things into the cockpit is weight. As easy as it would be to go through and make a whole whack of scale pieces, and two complete MB ejection seats, complete with full out instrument panels, throttle quadrant that moved accordingly, along with rudder pedals and a control column as well, the extra's will quickly add up here. To not only keep the weight of the aircraft down, but to also ensure that she's not too nose heavy, weight will always be a consideration. B. Accurate Scratch Building - if I'm going to do this, then it may as well be as true to the Mk.4b as possible. C. Simple Designs - both for cutting weight down, but also in the (likely, and planned for) event of this Clunk thundering in, I really do not want to go through and spend an extended period of time rebuilding complicated pieces. As well, the more that's in there, yes, it'll look great, but the moving control column, and throttles along with rudder pedals, how much of that will be seen? So there needs to be a real look at what is practical, and what is pointless. So, moving forward. The first thing that I want to do, while waiting for the plans to arrive, is start making the instrument faces. Using Coral, I'll be making the faces that can then be scaled down to the appropriate scale size without any deformations or distortion. First things first, a great reference picture is needed. Oddly enough, there aren't very many of the IP's, but of the ones I've found, I like this one most: The first instrument I will be making will be the VSI - Vertical Speed Indicator. It's of an older style, and though there were a few styles, I've decided on this one (for no particular reason, other than I had a fairly descent ref. picture of it). So, going through a simple google image search, I found this image here: The VSI is much like this one here, aside from the small script written just over the needle. Very simple, and straight forward, which is why I decided to start with this one: From here, once the panel size is determined, along with the individual gauge diameters, the instruments will be printed out without any gloss finish. They will be mounted onto a thin, lightweight surface. A small spacer is added in the center, and a needle is added to give the raised look. As I mentioned before, this cockpit will be viewed a LARGE MAJORITY of the time while the turbines are shut off and the aircraft is on the ground - so the instruments themselves will read just the same. Once that's done, the actual instrument panel will be cut out and the appropriate sized dimensions for each gauge and it's placement applied. The panel will be finished in a semi-gloss to flat finish (just slightly more glossy than the instrument faces). The bezels will be made from thin styrene plastic, and then also painted just a slightly different shade of black. This all goes to give an overall black cockpit some depth. Once it's all said and painted, the round glass dial faces will be cut from thin sheets of clear styrene plastic, and the entire thing sandwiched together. All the knobs, and dials will be made from either light plastic (by light, I mean thin sheets), or from scrap balsa just cut, sanded smooth and finished with a coat of appropriate paint. All the appropriate stenciling will be applied either by hand, dry transfer stencils, or the use of decals where more appropriate. Scale screws in the panel could be made using just the cut off heads of smaller screws glued into place (metal or plastic), but they'll be there as well. So that's the plan with the instrument panel. I'll also keep updating these posts with the images I made for the Instrument Panel Gauge Faces, so that if anyone else out there wants to use them, you'll be more than free to do so! More soon, Cheers, Mark. Last edited by Mark_WCE; 08-28-2012 at 07:01 PM. |
. |
|
|
08-23-2012, 02:56 PM | #24 |
Level 3 Supporter
★ Site Supporter ★
I am: Eric Dizenbach
Join Date: Apr 2005
Location: Oshawa Ont.
Radio of choice:
JR 12X # of RCs: 20
Feedback: 32 / 94%
Posts: 725
Total Props: 7
|
Re: 1/6 CF-100 Canuck Mk.4b
Hi Mark Gary Strong and myself did the CF 100 a few years ago in 1/10 th. scale. Your optimism about 35# dry weight is concerning. The 100 is notoriously tail heavy as a model. I would expect a more realistic weight of a twin turbine 1/6 scale to be more in the 55-60 pounds dry. Our little one came in at 24#. Good luck with your project. Eric Dizenbach
__________________
MAAC 6859 LSF 462 |
. |
08-23-2012, 03:21 PM | #25 |
RCC Junior Contributor
I am: Mark E.
Join Date: Aug 2012
Location: Winnipeg, Manitoba
Radio of choice:
Spektrum DX18 # of RCs: 1
Feedback: 0 / 0%
Posts: 189
Total Props: 4
|
Re: 1/6 CF-100 Canuck Mk.4b
Eric,
Thank you very much for your input. I just have a couple of questions: 1. How did you solve the problem with the 100 being tail heavy? 2. What construction methods were used in the fuselage (traditional balsa, or a composit with some framing inside?) Or other? Again, thank you very much! This may indeed turn into a Mk.5 with the wingtip extensions to help with more wing area (an additional 14 inches, bringing the wing span (with tip tanks) to almost 129 inches), and an upgrade to larger turbines... and power through it... (pun intended), but, still going to try my best with the initial ideas as best as I can. Cheers, Mark. PS. Any photo's by chance of your 1/10th Clunk? I'm sure I'm not the only one that would love to see some pictures of your work. Last edited by Mark_WCE; 08-23-2012 at 03:43 PM. |
. |
08-23-2012, 03:38 PM | #26 |
RCC Junior Contributor
I am: Mark E.
Join Date: Aug 2012
Location: Winnipeg, Manitoba
Radio of choice:
Spektrum DX18 # of RCs: 1
Feedback: 0 / 0%
Posts: 189
Total Props: 4
|
Re: 1/6 CF-100 Canuck Mk.4b
Eric,
Just as an addition to my last, especially with the second question - it was in NO WAY intended to question your abilities to build an RC. Any, and I mean ANY advice that I could get from you with your 1/10 Clunk that you think would help with the 1/6 I am preparing to build, I will gladly take it! Again, thank you, Mark. |
. |
08-23-2012, 04:20 PM | #27 |
Level 3 Supporter
★ Site Supporter ★
I am: Eric Dizenbach
Join Date: Apr 2005
Location: Oshawa Ont.
Radio of choice:
JR 12X # of RCs: 20
Feedback: 32 / 94%
Posts: 725
Total Props: 7
|
Re: 1/6 CF-100 Canuck Mk.4b
Hi Mark Tail heavy was solved with I think about 1.5# of lead. Construction was conventional fibreglas on the fuse. Wings and tail were foam core with molded fibreglas skins. For a jet the 100 has a very short nose moment. I have 1/6 blow up of the 100 which is the size I wanted to do, but Gary chickened out so we went with the smaller version. The intake on the nacelle is so short in relation to the CG you can't move the engines forward in the fuse. I don't think P 80's would cut it so tailpipe size may be a problem if you want true scale. Eric
__________________
MAAC 6859 LSF 462 |
. |
08-23-2012, 04:36 PM | #28 |
RCC Junior Contributor
I am: Mark E.
Join Date: Aug 2012
Location: Winnipeg, Manitoba
Radio of choice:
Spektrum DX18 # of RCs: 1
Feedback: 0 / 0%
Posts: 189
Total Props: 4
|
Re: 1/6 CF-100 Canuck Mk.4b
From the sounds of it Eric, and it's a nearly $2000 question... P80 SE's putting out 22 lbs of thrust each at max, or the P140's throwing out nearly 32 each (which oddly enough is almost scale thrust for the actual turbine rating).
It may be a bit of an ignorant approach, but what I may do is build her in 1/6 as planned, leaving the power plants for the very end. Once everything else is constructed, minus the elevators, it'll take almost nothing to make a Mk. 5 with wingtip extensions. The extra wing area may cut down on the wing load too, and so I'll keep that an option. This being said though, through the extensive use of composit materials throughout this build, and as I do have CF easily accessible, rather than FG, there still may be hope to shave down enough here and there. If she's tilting heavy, then it's Mk. 5 wingtip extensions giving an extra 14 inches on the span, and if that's still not enough, then it's going with the P140's and not the P80's. I'll be able to know which direction to go well before the nacelles will be mounting their power plants. It'll come down to the construction, light as possible while still being strong enough and having the flexibility not to snap like a twig. The rest of the components (from exactly which servo's and their weights, weight of the complete retract systems (struts, 6 wheels, brakes, etc) and all other items going inside), that will decide the engines and the desired flight time (lbs of fuel)... etc... etc... etc... I'm just repeating my own thoughts in my mind trying to figure something out... ...but yes, I hope to plan this one out to where all the components will be known and their weights established (and hoping to get a +/- 1kg estimate on them all, so that I can not only move ahead with the construction appropriately, while maintaining a good grasp on the COG, but plan ahead for which turbine to use. I think I'm overlooking something here... big time... is it really that big of a deal if this thing weighs in at 45-60 lbs dry? Either way, I'm too stubborn for my own good. Call it the RCAF way, but she will fly. (No promises on the landings, but I do hope that it doesn't come right after the take off). Last edited by Mark_WCE; 08-23-2012 at 05:13 PM. |
. |
08-23-2012, 09:02 PM | #29 |
RCC Junior Contributor
I am: Mark E.
Join Date: Aug 2012
Location: Winnipeg, Manitoba
Radio of choice:
Spektrum DX18 # of RCs: 1
Feedback: 0 / 0%
Posts: 189
Total Props: 4
|
Re: 1/6 CF-100 Canuck Mk.4b
It's not that it's frustrating, there is just too much fun and potential with this for it not to work. Very realistically though, without cutting corners, I do sincerely hope and aim to creat as true a 1/6 scale representation of the CF-100 Canuck as possible. Whether she's powered by P80 SE's or P140 RX's, the Mk.4b or a Varient offer Mk.5 series with extended wingtips, whether she is made in a traditional way or heavy on the composit side of fabrication, we will see this Cluncks flying. Whether she is a delicate flyer or very true to the neck-name "lead sled" is yet to be seen, hahahahaha...
Still, pressing forward! Again, thank you to those who have helped, and as always, I'm always open to suggestions, advice and ideas. Cheers, Mark. |
. |
08-23-2012, 09:37 PM | #30 |
Level 3 Supporter
★ Site Supporter ★
I am: Kevin Drayson
Join Date: Feb 2011
Location: Moncton NB
Radio of choice:
Spektrum DX8 # of RCs: n+1
Feedback: 16 / 100%
Posts: 2,041
Total Props: 158
|
Re: 1/6 CF-100 Canuck Mk.4b
Would love to see a Clunk of any size fly! If I ever saw a real one flying, I was too young to remember. I drive past a Mk.5 twice a day, poor thing impaled on a concrete pillar and all but abandoned.
|
. |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | |
Display Modes | |
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Rustler Mamba SCT, CF chasis, 100% RPM stuffs, Telemetry, Alu big bore shocks etc! | daniel880516 | FS - Cars and Trucks | 9 | 03-22-2012 12:24 AM |
USED OS 4B Carb. in excellent condition | repeter_246 | FS - Engines | 0 | 01-05-2011 06:15 PM |
CF-100 foam plug for sale...*SOLD* | Guest | FS - Airplanes | 8 | 10-20-2008 03:52 PM |
DH 100 MK 3 Vampire | BJH424 | Electric Jets | 2 | 03-24-2003 02:47 PM |