Andy J Posted October 21, 2020 Share Posted October 21, 2020 Got to the point of adding a suitable motor. A search of my motor box only had one likely candidate, but cant identify it. Marking show that the Kv is 1050 with an external diameter of 42mm, 5mm shaft with 12 poles. Does anybody recognize its identity from the picture below so that I can establish if its suitable for the Panther. Likely purchase site would have been fat shark or HK. Edited By Andy Joyce on 21/10/2020 17:36:05 Quote Link to comment Share on other sites More sharing options...
Trevor Posted October 21, 2020 Share Posted October 21, 2020 On a 3s LiPo and an 11 or 12in prop, I think that motor should be fine. Trevor Quote Link to comment Share on other sites More sharing options...
Richard Harris Posted October 22, 2020 Author Share Posted October 22, 2020 Andy, I'm with Trevor on this, the only issue I can see is a 3s may not give the CG required unless its a high capacity, worth checking out. Rich Quote Link to comment Share on other sites More sharing options...
Trevor Posted October 22, 2020 Share Posted October 22, 2020 Yes, I did need a little bit of lead up front, using a 3s x 3300mah battery. Quote Link to comment Share on other sites More sharing options...
Andy J Posted October 22, 2020 Share Posted October 22, 2020 Was thinking of using two 3S 2400maH batteries wired in parallel. Would have put them is series but the ESC is only rated as a 4S. Quote Link to comment Share on other sites More sharing options...
Richard Harris Posted October 22, 2020 Author Share Posted October 22, 2020 Andy, If you haven't already started cutting wood you could extend the nose by say 20mm. The prototype had a longer nose than that of the published plan, I missed the error when checking the plans going in the mag. Only the eagle eyed have ever noticed Rich Quote Link to comment Share on other sites More sharing options...
Andy J Posted October 22, 2020 Share Posted October 22, 2020 Afraid I have already built the fuselage Richard. Bigger battery box would have been a benefit as the 2400maH batteries only just fit. Quote Link to comment Share on other sites More sharing options...
Malcolm - coolwind.co.uk Posted October 22, 2020 Share Posted October 22, 2020 Andy Is it too late to cut a hole in the bulkhead, like I did with mine? Malcolm Quote Link to comment Share on other sites More sharing options...
Malcolm - coolwind.co.uk Posted October 22, 2020 Share Posted October 22, 2020 Edited By Malcolm - coolwind.co.uk on 22/10/2020 17:22:11 Quote Link to comment Share on other sites More sharing options...
Andy J Posted October 22, 2020 Share Posted October 22, 2020 Was already thinking about that option Malcom. Will see what the CoG position is first when I get the motor mounted. Quote Link to comment Share on other sites More sharing options...
Malcolm - coolwind.co.uk Posted October 22, 2020 Share Posted October 22, 2020 I use a 4S 3300 which weighed 410g and also added about 80g of lead malcolm Quote Link to comment Share on other sites More sharing options...
Andy J Posted October 23, 2020 Share Posted October 23, 2020 Malcolm, that must have been a very compact 3300mah battery to only just poke through the firewall. Possible another option would be 2 x 1500mah 4S's stacked vertically. Quote Link to comment Share on other sites More sharing options...
Andy J Posted October 23, 2020 Share Posted October 23, 2020 Malcolm, that must have been a very compact 3300mah battery to only just poke through the firewall. Possible another option would be 2 x 1500mah 4S's stacked vertically. Quote Link to comment Share on other sites More sharing options...
Andy J Posted January 18, 2021 Share Posted January 18, 2021 In the process of making the blades. Note the plan shows a 1mm blunt edge to the LE although early pictures on the tread show a sharp LE. So which is better, blunt or sharp? Quote Link to comment Share on other sites More sharing options...
Big T Posted January 18, 2021 Share Posted January 18, 2021 Posted by Andy Joyce on 18/01/2021 13:39:55: In the process of making the blades. Note the plan shows a 1mm blunt edge to the LE although early pictures on the tread show a sharp LE. So which is better, blunt or sharp? Sharp works best in my experience. Better spin up. Quote Link to comment Share on other sites More sharing options...
Andy J Posted January 18, 2021 Share Posted January 18, 2021 Thanks Big T, will do a bit more sanding. Quote Link to comment Share on other sites More sharing options...
Andy J Posted January 18, 2021 Share Posted January 18, 2021 Sorry, double post. Edited By Andy Joyce on 18/01/2021 14:55:18 Quote Link to comment Share on other sites More sharing options...
Joakim Karlsson 1 Posted January 29, 2021 Share Posted January 29, 2021 I am really tempted to get me one of these. The design is awsome, well done! There is even some parts for 3D printing on Thingiverse. But I'm wondering about the short kit available from Sarik Hobbies. Looking at the "Plan, Laser Cut & Additional Wood Pack" product. Anyone know if it includes GF parts and landing gear? My guess is that it doesn't, since its not mentioned Any good source for those things? Quote Link to comment Share on other sites More sharing options...
Richard Franks Posted January 29, 2021 Share Posted January 29, 2021 I am assuming this is for The Panther..The Sarik plan pack does not include Fibre glass parts or undercarriage..The quality of the supplied stuff is great,so good I bought 2 of them.The first one completed flies briliant . F/Glass parts or sheet to cut them yourself available from Coolwind models (very helpful) but the u/c you will have to bend and solder yourself. Really depends on your confidence at building.I dont think the sarik plan pack includes the materials for the rotors but I will look in the unopened one in my workshop Quote Link to comment Share on other sites More sharing options...
Joakim Karlsson 1 Posted January 29, 2021 Share Posted January 29, 2021 Posted by Richard Franks on 29/01/2021 15:13:39: Really depends on your confidence at building.I dont think the sarik plan pack includes the materials for the rotors but I will look in the unopened one in my workshop Thank you! Quote Link to comment Share on other sites More sharing options...
Big T Posted January 29, 2021 Share Posted January 29, 2021 Posted by Joakim Karlsson 1 on 29/01/2021 15:47:32: Posted by Richard Franks on 29/01/2021 15:13:39: Really depends on your confidence at building.I dont think the sarik plan pack includes the materials for the rotors but I will look in the unopened one in my workshop Thank you! If you are a 3D printer there are several different STL files for a complete blade set that do very well for the Panther. If not then the thought of making blades from scratch seems more daunting that reality. It’s not that difficult if you select the wood and have either a belt sander or David plane and sanding blocks. Have a go! What’s the worst that can happen? Quote Link to comment Share on other sites More sharing options...
Joakim Karlsson 1 Posted January 29, 2021 Share Posted January 29, 2021 Posted by Big T on 29/01/2021 17:10:50: If you are a 3D printer there are several different STL files for a complete blade set that do very well for the Panther. If not then the thought of making blades from scratch seems more daunting that reality. It’s not that difficult if you select the wood and have either a belt sander or David plane and sanding blocks. Have a go! What’s the worst that can happen? You are quite spot on. The fabrication of the blades has been something that has made me turn around when looking at autogyros earlier. But like you said, whats the worst that can happen? Also, it will be faster to sand blades out of wood than it will be to print them. But might give both a try. Whats scaring me a bit now is making the GF triangle head plate. I guess the holes have to be quite spot on not to cause balance issues. I know those plates are available from Coolwind. But I really want to be able to make my own in case of a crash. And I don't think a 3D printed one will hold up as well as GF, or perhaps it will if you make it three times thicker? Two other things. There are three discs available at Thingiverse called H1, H2 and H3. What are those? And is the article available in PDF format somewhere? Quote Link to comment Share on other sites More sharing options...
Richard Harris Posted January 29, 2021 Author Share Posted January 29, 2021 Joakim, As Tim suggests the wooden blades are straight forward to construct though the 3D printed versions seem to fly just as well. Here is a video taken at our one and only get together last year, there is a Panther taking off at around 2.43 which has printed blades designed by Ian Smith. These are made in segments attached onto a carbon spar, the MK1 versions taped together but I believe the latest interlock together. If a blade gets damaged the segments can be replaced quickly and easily, its all very clever. The tri plate is easy enough to make yourself, I print out the triangle onto paper and spray glue it onto the GF sheet, then cut out using tin snips before filing and sanding to shape. Aluminium for the UC can be bought from DB Sport and scale. Rich Quote Link to comment Share on other sites More sharing options...
Joakim Karlsson 1 Posted January 29, 2021 Share Posted January 29, 2021 Sounds great! And congratulations (and thanks!) on a very successfull design Edited By Joakim Karlsson 1 on 29/01/2021 18:53:12 Quote Link to comment Share on other sites More sharing options...
Joakim Karlsson 1 Posted February 1, 2021 Share Posted February 1, 2021 <deleted post> Edited By Joakim Karlsson 1 on 01/02/2021 12:14:54 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.