karl grey Posted November 4, 2013 Share Posted November 4, 2013 Nice work Martin, putting me to shame as I still need to get a copy of the plan but will wait as I have 2 other projects on the go first. One of these projects is making me think about how an electric foam version of the jazz would work out. Quote Link to comment Share on other sites More sharing options...
Ian Southerton 1 Posted November 5, 2013 Share Posted November 5, 2013 I've been thinking of mounting my servos on top of the wing so i can fly without undercarriage-helpful as the grass where i fly is often long. Are there any advantanges/disadvantages? Quote Link to comment Share on other sites More sharing options...
Martin U Posted November 5, 2013 Share Posted November 5, 2013 As you can see from the photo I went for top mounted servos as I wanted to protect them from hard landings. I imagine there will be more turbulence impacting the tail/fin so I may make up some aero device to smooth it a bit. Interested to hear other thoughts Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted November 5, 2013 Author Share Posted November 5, 2013 Looks like my RX battery choice may have to change. I just offered up the LiFe and is is not going to fit under the tank. I am hopeful that I can squeeze it above the tank. You can also see here the tank encroaching into the wing leading edge issue. Can you charge LIFe batteries in situ? I believe you can but it would mean making an extension lead for the balance lead and a way to get to it to charge it. Suggestions please. Kev Quote Link to comment Share on other sites More sharing options...
Martin U Posted November 5, 2013 Share Posted November 5, 2013 I may have some issue with the CofG but I'm thinking of mounting the batt on a small tray behind the tank. Quote Link to comment Share on other sites More sharing options...
Martin U Posted November 5, 2013 Share Posted November 5, 2013 Oh and latest pic with engine test mounted. Quote Link to comment Share on other sites More sharing options...
Martin U Posted November 5, 2013 Share Posted November 5, 2013 Bat position, My plan 'B' is to put it in the top cover but I'll need to think about the strength of that or the bat could fly out on a hard landing. As you can see still WIP thinking. Quote Link to comment Share on other sites More sharing options...
Steve Hargreaves - Moderator Posted November 5, 2013 Share Posted November 5, 2013 You can charge your LiFE batteries in the model Kev no problem.....at the risk of stating the obvious you DO need a charger with a LiFE program.....a LiPo program won't do... I found a 90cc tank at HK that I think will do the job....90cc is just over 3oz I think.....one is on the way to me so I'll report back... See here... Quote Link to comment Share on other sites More sharing options...
Steve Hargreaves - Moderator Posted November 5, 2013 Share Posted November 5, 2013 PS.....Li battery balance leads available here.... Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted November 5, 2013 Author Share Posted November 5, 2013 My IMAX B6 (copy) can charge LiFe so not a problem there. Most 4 button chargers can charge LiFe. But remember to put it back to LIPO when done!!!! Kev Edited By Kevin Fairgrieve on 05/11/2013 21:04:06 Quote Link to comment Share on other sites More sharing options...
Steve Hargreaves - Moderator Posted November 5, 2013 Share Posted November 5, 2013 I'm sure you're right Kev & I didn't think for a moment you would try & charge a LiFE battery using a non-LiFE program.....but better safe than sorry eh!! Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted November 7, 2013 Author Share Posted November 7, 2013 This bit of carbon bling arrived this morning. Same as on my original Jazz. Kev Quote Link to comment Share on other sites More sharing options...
Ian Southerton 1 Posted November 7, 2013 Share Posted November 7, 2013 I bought one of them too and a tail skid. Will be interesting to see how it holds up as i bent the piano wire gear on my old jazz! Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted November 7, 2013 Author Share Posted November 7, 2013 This is the same as on my other Mini Jazz. Has survived well including a less than smooth arrival. I did make up a wire set originally. Never used them. Kev Quote Link to comment Share on other sites More sharing options...
crispin church Posted November 7, 2013 Share Posted November 7, 2013 my battery just behind tank i use same life battery for a lead use a normal servo lead and take end sleeve off on the pins fits a treat and on a b6 charger balance plug and got 3 planes with the battery left in all time Quote Link to comment Share on other sites More sharing options...
Martin U Posted November 10, 2013 Share Posted November 10, 2013 Progress update.. Servo's fitted, fus covered [last night] With the small fus and closed loop rudder I found that the best way [for me] to fit the elevator servo was to invert it. Couple of pics to show top & bottom view. All seems to work OK The eagle eyed will see that I fitted the wing retainers the wrong way round Doh! Too much trauma to change and they are well fixed. As the model is so light I'm going to leave it..... Quote Link to comment Share on other sites More sharing options...
Ian Southerton 1 Posted November 10, 2013 Share Posted November 10, 2013 Some of the builds are taking shape really quick. My work so far-also building a Piwakawaka, so going slow and it's cold nin the garage! Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted November 10, 2013 Author Share Posted November 10, 2013 All coming along nicely and looking good. My build is on hold for the next week as me and SWMBO are off to the Jurasic Coast for a weeks well deserved R and R before the mad silly season. Never ever choose to work in retail if you can help it. Kev Edited By Kevin Fairgrieve on 10/11/2013 20:11:29 Quote Link to comment Share on other sites More sharing options...
IanN Posted November 10, 2013 Share Posted November 10, 2013 Posted by Martin U on 04/11/2013 16:21:55: here you go Kev 1 tail pic Aswell as the incidence question, (which Mr A has already confirmed was corrected in a subsequent mag and should be 0 / 0) the tailplane seems to be further forward on this MHS stocked plan, as opposed to the free plan - presumably to stop the elevators fouling the rudder? Quote Link to comment Share on other sites More sharing options...
Xavier Anglès Posted November 12, 2013 Share Posted November 12, 2013 Hi, first of all, let me introduce myself, my name is Xavi and I'm writing from a small city near Barcelona in Catalonia. The "Mini Jazz" will be my first plane built from a plan... but as a newbie, I have a question regarding the plans... what are the "small triangles" in the plans? If you watch the photo in the previous post you will see the "small triangles" that I'm referring... Many thanks and sorry for my bad english Xavi Quote Link to comment Share on other sites More sharing options...
Ian Southerton 1 Posted November 12, 2013 Share Posted November 12, 2013 Hi, your English is better than a lot of people who live here! Think the triangles you refer to are small 'fillets' used to strengthen the tail, you'll find the same on the elevator. It's just a balsa offcut the same thickness as the tail with the grain of the wood as shown on the plan. Ian. Quote Link to comment Share on other sites More sharing options...
Steve Hargreaves - Moderator Posted November 12, 2013 Share Posted November 12, 2013 Or do you mean the small white triangles running top & bottom & around the tailplane?? If so these are used to denote the actual outline of a part...in this case the fuselage sides.... They are just there for the avoidance of doubt & show which line to cut to.... Quote Link to comment Share on other sites More sharing options...
Ian Southerton 1 Posted November 12, 2013 Share Posted November 12, 2013 2 different minds, 2 different answers!!! Never thought of the outline triangles! Ian. Quote Link to comment Share on other sites More sharing options...
Xavier Anglès Posted November 12, 2013 Share Posted November 12, 2013 yes, I mean the small white triangles... many thanks for your answers! Xavi Quote Link to comment Share on other sites More sharing options...
Martin U Posted November 14, 2013 Share Posted November 14, 2013 A bit more progress, basic covering done... Quote Link to comment Share on other sites More sharing options...
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