Richard scarborough Posted January 21, 2013 Share Posted January 21, 2013 Is anybody building the Tony Nijhuis designed Harvard? I would be interested to read your thoughts on the build. Mine is almost complete, colour scheme being New Zealand AirForce. Where can I find 3-1/4" wheels that are no wider than 1"? Quote Link to comment Share on other sites More sharing options...
GrahamC Posted January 21, 2013 Share Posted January 21, 2013 I found them at hobbyking for my Spitfire. Looking quickly these are 80mm diameter as opposed to 82.5 - so close on diameter and only 22mm fat. It's odd you have to buy them in threes?! But they are cheap enough! - Or these are just over an inch fat. Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted January 21, 2013 Share Posted January 21, 2013 Hi Richard, You going to let us see some build piccies On My TN Spitfire build I took those same wheels that Graham has pointed to in his first link, popped the hubs apart, removed a bit of wheel, slimmed the tyre and glued it all back together again Worked a treat. Cheers Danny Quote Link to comment Share on other sites More sharing options...
Richard scarborough Posted January 22, 2013 Author Share Posted January 22, 2013 Thanks to GrahamC & Danny Fenton for info about the wheels. I tried to upload some photos today, but to no avail. Will try again tomorrow. Quote Link to comment Share on other sites More sharing options...
Richard scarborough Posted January 23, 2013 Author Share Posted January 23, 2013 Here are a few pics of my Harvard. I had to use my FlyCam to take them, hence the poor quality. Centre section of wing will be covered when I get the wheels and am sure nothing needs modifying. Quote Link to comment Share on other sites More sharing options...
Terry Walters Posted January 23, 2013 Share Posted January 23, 2013 Very nice looking aeroplane Richard. Looks the business! Terry Quote Link to comment Share on other sites More sharing options...
Dale Gibson Posted January 23, 2013 Share Posted January 23, 2013 Wow your Harvard looks great Richard....how did you find the build? Dale Quote Link to comment Share on other sites More sharing options...
Ton van Munsteren Posted January 23, 2013 Share Posted January 23, 2013 Woooo that looks really nice, well done. Ton Quote Link to comment Share on other sites More sharing options...
Richard scarborough Posted January 24, 2013 Author Share Posted January 24, 2013 Thanks for the kind words, gents. Building the model is not as challenging as it first appeared to be,Tony's article in the magazine is a very good set of instructions and the plan itself is accurate. There are some photos on Tony's website that show what each part of the build should look like. I didn't find these until I had built the fin, stab, and half the fuselage, but was relieved to see things looked the same. The only changes I have made are concave fillets where fin and stab blend into the fuse. I used 2.0mm balsa instead of 2.4mm for sheeting the wing. One area to watch is where the canopy fits as there is very little material you can trim off if using the vac-formed one from Tony Nijhuis Designs. Adding 6mm to the top of the fuse sides worked ok. Power for the model will be from a 6s LiPo battery via 75 amp ESC, O.S. 5020-490 brushless motor and 14"x7" prop. Quote Link to comment Share on other sites More sharing options...
howie Posted January 25, 2013 Share Posted January 25, 2013 Your Harvard is skillfully finished. Where did you get the dummy radial engine from? How did you detail the cockpit so well. I mean what did you use to make the lines on it? Cheers Howie Quote Link to comment Share on other sites More sharing options...
Richard scarborough Posted January 25, 2013 Author Share Posted January 25, 2013 Hi Howie, The dummy engine, cowl and canopy are from Tony Nijhuis Designs. The lines on the canopy are cut from SOLARTRIM and stuck on the outside. Hope they stay there. Detailing inside will be time consuming - 2 pilots, 2 instrument panels but it must be done. Canopy will have to be removeable for battery access so it and everything inside will lift off as one unit. Cheers Richard Quote Link to comment Share on other sites More sharing options...
lightning 759 Posted February 8, 2013 Share Posted February 8, 2013 Hi Richard did you go with a pre cut kit or did you cut them yourself ? will we get to see her at barkston ? i went & bought plans for a ziroli one then this came out ,thinking of doing this one first as cost is a lot more friendly for me at presant . Andy Quote Link to comment Share on other sites More sharing options...
Richard scarborough Posted February 8, 2013 Author Share Posted February 8, 2013 Hi Andy I cut all the bits&pieces myself, never needed laser cutting in the past, still don't. I didn't write down how much the balsa & ply cost but I am sure it was less than the pre cut parts. All the ribs in the tail sufaces were cut from scrap left over from AstroHog wing ribs. As for the fuse, there are not all that many parts anyway. I certainly would encourage anyone to have a go at this model, it's an enjoyable build. Just keep the tail light! Barkston may be a bit tricky, I live in Australia. Hope to post flying photos before too long. Cheers Richard Quote Link to comment Share on other sites More sharing options...
lightning 759 Posted February 8, 2013 Share Posted February 8, 2013 Posted by Richard scarborough on 08/02/2013 09:40:11: Hi Andy I cut all the bits&pieces myself, never needed laser cutting in the past, still don't. I didn't write down how much the balsa & ply cost but I am sure it was less than the pre cut parts. All the ribs in the tail sufaces were cut from scrap left over from AstroHog wing ribs. As for the fuse, there are not all that many parts anyway. I certainly would encourage anyone to have a go at this model, it's an enjoyable build. Just keep the tail light! Barkston may be a bit tricky, I live in Australia. Hope to post flying photos before too long. Cheers Richard Hi Richard very sorry i know a Richard Scarborough over here who is well known on the rc warbird front , mistaken identity very sorry, your harved looks great though andy Quote Link to comment Share on other sites More sharing options...
Richard scarborough Posted March 1, 2013 Author Share Posted March 1, 2013 Never mind the mistaken identity Andy, I suppose it was bound to occur sooner or later. Harvard is close to maiden flight. I decided not to use the O.S motor (would have meant borrowing it from my AstroHog) instead I fitted a Turnigy G60 & 80 amp esc. Today I connected the watt meter and the results are- peak watts-1277 peak amps-54.3 rpm-10000. Pulling throttle back to 8000 rpm draws 25 amps- 560 watt. After 6 1/2 minutes, at varying throttle settings, reading was 1000 watts @ 46 amps WOT. These figures were obtained with a 14x7 prop and Turnigy 5000mah-6s 20c battery. Following this little test, battery took 3300 ma to recharge. Quote Link to comment Share on other sites More sharing options...
Ruprect Spode Posted March 1, 2013 Share Posted March 1, 2013 A lovely example Richard, who would have thought 30 years ago you'd get a respectable 7 minutes flying from an electric setup on something that big. Looking forward to your maiden report. Ruprect Quote Link to comment Share on other sites More sharing options...
GrahamC Posted March 1, 2013 Share Posted March 1, 2013 Looking very good that. As a mater of interest, which KV rating of G60 are you using? I'm popping one in a puppeteer at present, and was interested in your figures. Quote Link to comment Share on other sites More sharing options...
Richard scarborough Posted March 1, 2013 Author Share Posted March 1, 2013 It is the 500KV G60. ESC is the Turnigy Plush 80 amp. I have been using 60 amp version of this esc in other models without any problems at all. The built in BEC is rated at 3 amp, which is probably why Turnigy recommend driving no more than 4 servos from it. I am using a 2 cell LiFe battery for flaps& retracts in the Harvard. Quote Link to comment Share on other sites More sharing options...
GrahamC Posted March 1, 2013 Share Posted March 1, 2013 Well four servos will be fine for the Puppeteer! - Thanks - I've gone for the 300Kv one - thinking that it is way more than the Puppeteer will need but should drive a prop that looks large enough, and the extra weight will do no harm and help with the CofG. I'll have a good look at that ESC. Quote Link to comment Share on other sites More sharing options...
Dale Gibson Posted March 1, 2013 Share Posted March 1, 2013 Looks fantastic Richard, good luck with the maiden and don't forget your camera As soon as I think my building skills are up to the job I'm going for this, I just love the Harvard / AT 6 Dale. Quote Link to comment Share on other sites More sharing options...
Richard scarborough Posted March 10, 2013 Author Share Posted March 10, 2013 Seem to have lost some photos, here are a few more. Quote Link to comment Share on other sites More sharing options...
lightning 759 Posted March 10, 2013 Share Posted March 10, 2013 Hi Ricard looks great cant wait for your flight report ,thinking of doing one myself of get the plan blown up just a bit too 70 to 80 inch span . andy Quote Link to comment Share on other sites More sharing options...
dbflyer Posted March 10, 2013 Share Posted March 10, 2013 I wonder why I can't see the pictures of the model? All I have are little rectangles in the centre of the photo area! ..........I can see them now!!! Edited By dbflyer on 10/03/2013 19:38:16 Quote Link to comment Share on other sites More sharing options...
Richard scarborough Posted March 11, 2013 Author Share Posted March 11, 2013 Sorry about the stuffup with photos, I deleted some from my album without realising they would also be deleted from previous posts. (another grey moment) Quote Link to comment Share on other sites More sharing options...
Richard scarborough Posted July 9, 2013 Author Share Posted July 9, 2013 Finally got to fly the Harvard on Sunday! (selling house and moving got in the way) None of the 100 things that could go wrong did. I'm extremely pleased with this model, it flys really well, good roll rate. loops are best kept big, it will flick out of a tight loop - to be expected? It is also quite fast. The reccomended power for electric set up is around 800 watts. 1200 watts is heaps. If anybody is thinking of building a Tony Nijhuis Harvard, do it, you won't be disappointed. Cheers, Richard Quote Link to comment Share on other sites More sharing options...
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