Tim Kearsley Posted February 17 Share Posted February 17 Thanks Richard. The only possible reason for this that I can think of is that the dimensions of the M2 balsa component in the Sarik kit are incorrect. I guess I can cut two new M1 liteply side panels and a new, correctly sized M2 balsa piece, to suit a 6 X 13 mm mast. Quote Link to comment Share on other sites More sharing options...
Richard Harris Posted February 17 Author Share Posted February 17 I've had a quick look and I built a Sarik version, though only had the formers. It looks like mine is a 3/8" mast and its been fine. If you do want to go 1/2" you could always stick some sandpaper to a piece of 1/4 x 3/8 " spruce and lengthen the rectangular hole by sanding it? should be pretty effortless I would think. Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted February 17 Share Posted February 17 What a very good idea - why didn't I think of that?! Thanks Richard, that's what I'll do. 😀 Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted February 20 Share Posted February 20 A quick question - where are you Revolver builders installing the Rx? I'm getting the impression that the LiPo needs to be well forward into the nose, for balance reasons. Quote Link to comment Share on other sites More sharing options...
Richard Harris Posted February 20 Author Share Posted February 20 5 hours ago, Tim Kearsley said: A quick question - where are you Revolver builders installing the Rx? I'm getting the impression that the LiPo needs to be well forward into the nose, for balance reasons. Yes, lipo up the front followed by the esc and the receiver just below head servos on mine. Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted March 4 Share Posted March 4 How are Revolver builders securing the canopy? I've installed two button magnets at the rear but unsure what to do at the front. Another magnet(s) or some sort of locating peg? Thanks. Quote Link to comment Share on other sites More sharing options...
Richard Harris Posted March 4 Author Share Posted March 4 Tim, Go with whatever suits you, I think mine is held in place with magnets at front and rear. Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted March 4 Share Posted March 4 Thanks Rich. I'm thinking a magnet at the front with a peg to ensure alignment. Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted March 21 Share Posted March 21 Sorry guys, one more question - I'm new to working with Depron. The hinges for the rudder on the Revolver (mylar I presume?) - what adhesive do you use for fixing them? Does thin cyano dissolve Depron? I know UHU Por is one of the recommended adhesives for foam but it's a contact adhesive I believe, so not suitable for wicking into a furry hinge? Quote Link to comment Share on other sites More sharing options...
Trevor Posted March 21 Share Posted March 21 (edited) Yes, thin cyano will dissolve Depron. You need a foam-safe cyano. It’s thicker though, so best to work it into the slots with a pin or thin wire before assembly rather than rely on it wicking in. Edited March 21 by Trevor Quote Link to comment Share on other sites More sharing options...
Richard Harris Posted March 21 Author Share Posted March 21 Tim, I used 5 minute epoxy. Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted March 21 Share Posted March 21 Thanks chaps, as always, much appreciated. 1 Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted March 29 Share Posted March 29 Well, my Revolver build has been going well. The fuselage is built and covered and only the closed-loop rudder connections remain to be done. So I thought I'd make the rotor blades. I thought that too had gone well until I weighed them! Two of the blades are within a gram of each other. The third is..... over 5 grams lighter!! I'm bemused, to say the least. I can think of two possibilities: 1) I've not sanded a consistent profile, though I pasted templates on each end of each blade and thought I'd followed them reasonably accurately. 2) The balsa is of a lighter grade in the lighter blade. I'm building from the Sarik short kit and I must hold up my hand and say that I forgot to weigh the supplied 6mm balsa to check for consistency. Any thoughts how to proceed? Thanks. Quote Link to comment Share on other sites More sharing options...
Richard Harris Posted March 31 Author Share Posted March 31 Easy fix Tim, Just weight up your lighter blade to match the other two, I use PVA applied with a sponge or you can insert a piece of lead. The trick is adding the extra mass needed in the correct place so that it closely matches the others. First balance all the blades to find there span wise CG and mark this. This will give you a good idea where to apply the PVA, aim to keep these balance points as close as possible by applying it to the outer or inner portion etc. What you must do is add it on and forward of the cordwise CG. It sounds quite a procedure but it is quite simple to do. Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted March 31 Share Posted March 31 Thanks very much Rich. I understand the general principles of adding weight to the lighter blade (thanks to your original article in RCM&E). It was just the magnitude of the weight I need to add which bothered me! I wasn't sure if adding PVA would be enough. Many thanks again. Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted Monday at 14:07 Share Posted Monday at 14:07 Sorry guys, one more numpty question! I've balanced the rotor blades using Chris's excellent YouTube video. When it comes to mounting the head what order do things fit in? There's the cap-head bolt, Nyloc nut and a half-nut. How are these used in fitting to the head? Is it Nyloc nut first, then half-nut and the remaining thread screws into the head or vice-versa or the half-nut under the head? Thank you. Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted Monday at 15:31 Share Posted Monday at 15:31 I thought I'd better post a pic of progress to date. I still have to install the motor but it's getting there. Apologies for the complete lack of originality on colour scheme but they do say that imitation is the sincerest form of flattery! 1 Quote Link to comment Share on other sites More sharing options...
Richard Harris Posted 13 hours ago Author Share Posted 13 hours ago Nice job Tim 😎 Regarding the head unit, I'm sure Malcolm slips in an assembly diagram with the Razor head ? If not I will take a couple of photos. Rich Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted 9 hours ago Share Posted 9 hours ago Thanks Rich. No, there was no doc in with the Razer head. A couple of pics would be perfect. 👍 Quote Link to comment Share on other sites More sharing options...
Richard Harris Posted 9 hours ago Author Share Posted 9 hours ago OK Tim, We haver got a small get together this Saturday so I will take some photos. Rich Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted 9 hours ago Share Posted 9 hours ago My apologies, there is indeed an assembly doc with the Razer head, which I'd mislaid! Panic over. Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted 5 hours ago Share Posted 5 hours ago One thing I'm finding a bit odd is that with the battery (3S, 2200mAh) in the position shown, quite well back, I'm still needing to add 20g of weight at the tail to achieve a hang angle of 16 degrees. Does that sound a bit off? Quote Link to comment Share on other sites More sharing options...
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