Lucas Hofman Posted December 19, 2015 Author Share Posted December 19, 2015 Posted by Peter Miller on 19/12/2015 14:19:33: I think that I want to cry!!!! Why can't the pillock draw the plans right. He obviously doesn't know how to use his computer. What really makes me furious is that when people build the models I get the blame for errors not the (words fail me) draughtsman who can't stick to the original drawing. Peter, would it be possible to get a pdf file of your original plan. I would prefer to build your Ballerina, not the RCM&E draftman's.... Quote Link to comment Share on other sites More sharing options...
Lucas Hofman Posted December 19, 2015 Author Share Posted December 19, 2015 Posted by kc on 19/12/2015 12:28:21: I am expecting ( well hoping ) that by moving the motor bulkhead forward about 1.75 inches on my model that a 4S 3000 lipo ( now able to move forward by that much ) will just about get the CG right without lead. And I have found a particularly light piece of balsa for the tailplane, fin and rudder. So I am expecting that your 4S2200 will not be sufficient weight- but I might be wrong! kc, I am not putting much money on it either. If the CG end up too far back I have 3 options. - open up the firewall so the battery can be placed partly in front of it. - use a 4240 motor (50 gr. heavier) - use a 3300mAh battery. I have both 2200mAh and 3300mAh batteries, and will wait with ordering the motor until the model is build. Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted December 19, 2015 Share Posted December 19, 2015 I've my own parts cut ready, they may not be exact, and I may not fit them exactly in the right place, the plan may have a few minor error, but I will end up with a Ballerina relax lads it'll be o.k John Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted December 20, 2015 Share Posted December 20, 2015 Posted by john stones 1 on 19/12/2015 23:53:38: I've my own parts cut ready, they may not be exact, and I may not fit them exactly in the right place, the plan may have a few minor error, but I will end up with a Ballerina relax lads it'll be o.k John I agree chaps - just take a deep breath - wait to the proper start date 1st Jan and calm down! Plan building ever was full of little gliches - its our job to accommodate and solve them. You're rushing ahead Lucas - worrying about stuff you haven't even got to yet! And if you follow the MB you won't get to them until someone has already found a "workround" - chill get ready for Chritmas. We start inJanuary! BEB Quote Link to comment Share on other sites More sharing options...
Lucas Hofman Posted December 20, 2015 Author Share Posted December 20, 2015 With the risk of incurring the wrath of BEB (although I seem to remember it was he who wrote that studying the plans is ok) another post showing more plan studying: Removing weight up front will not help if the tail is not lightened too: and In additition I will try to use balsa for the turtledeck stringers. Will it help enough? Time will tell. Quote Link to comment Share on other sites More sharing options...
Daren Graham - Cambria Funfighters Posted December 20, 2015 Share Posted December 20, 2015 I think it's all partof the plan building process. If we are to encourage new builders into this part of the hobby then this is lesson 1. Measure the part first to see that it fits it's intended position, or as I generally do, make three copies of the plan at your local copy shop and cut out the parts. You can then lay these in place to see if it fits. If not adjust as necessary. Keep one copy and build on the other. I'll never forget building an Art Chester Jeep, I think it was Henry Haffke's design. If you followed the plan blindly, you found the cowling too small (and annoyingly beautiful) and the torque rods were impossible to fit. Many plans were drawn on a fag packet and then translated by the publishers way back when. A lot of models were built before the plans were drawn. That said, in this day and age there is probably no reason why it should be wrong. I'm going to extraordinary lengths to get it right with my products but It's bl**dy hard work, the slightest details can throw something else off, so don't be too hard on the design dept. Daren. Quote Link to comment Share on other sites More sharing options...
Former Member Posted December 20, 2015 Share Posted December 20, 2015 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Lucas Hofman Posted December 21, 2015 Author Share Posted December 21, 2015 Balsa ordered from the Balsa Cabin. Extremely pleasant lady handling the order. Recommended! Quote Link to comment Share on other sites More sharing options...
Lucas Hofman Posted December 29, 2015 Author Share Posted December 29, 2015 With the risk that some evil minded people are going to nickname this one the anorectic ballerina: Lightening holes in all formers, and a hole in F1 big enough to slide the battery forward in the cowl if needed (the latter will also allow air in to cool the battery). Quote Link to comment Share on other sites More sharing options...
Lucas Hofman Posted January 1, 2016 Author Share Posted January 1, 2016 Started on cutting formers: I have ply and light ply, but will have to wait for the package from Balsa Cabin for the Balsa parts. It looks to me that the lines for the snakes do not conform to Peter's prototype (assuming that the snake for the elevator exits further away from the tail comared to the rudder snake). They do not fit with the holes on the formers either. Could it be that the lines are mirrored? Edited By Lucas Hofman on 01/01/2016 21:10:18 Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted January 1, 2016 Share Posted January 1, 2016 Tail is made very similar to mine Lucas, I'm undecided about cross braces as yet, holes are easy remedied later, I prefer to feed piano wire through and do one hole at a time myself, I get a better outcome that way. John Quote Link to comment Share on other sites More sharing options...
kc Posted January 2, 2016 Share Posted January 2, 2016 Lucas, how will the motor be mounted when you have cut the large hole in F1? Is there a separate motor bulkhead as well? Quote Link to comment Share on other sites More sharing options...
AVC Posted January 2, 2016 Share Posted January 2, 2016 Lucas, this looks quite good. I like the idea of making lighter formers, especially for the electric version (although the original design is quite light already...) Another thread to follow! Quote Link to comment Share on other sites More sharing options...
Lucas Hofman Posted January 3, 2016 Author Share Posted January 3, 2016 KC, I intend to have a ply mounting plate on 4 M4 threaded rods. The rods do not have to be in a square pattern, there by allowing for a little more space for the battery. The motor mounting will then be bolted onto the mounting plate. THis way I get flexibility with regard to the motor used. (the mounting plate can be drilled after the whole fuselage is done. Most likely I will fly first without a cowl to find the best thrust line. My experience with pattern planes does indicate that playing with side and up/down thrust will make a plane fly straigther. Part of the fun to get the best out of every airframe! As an illustration my Skywalker, that uses the same construction: Quote Link to comment Share on other sites More sharing options...
Lucas Hofman Posted January 3, 2016 Author Share Posted January 3, 2016 HiAVC, it is a gram here and a gram there. I am not sure it will make much of a difference and will definetly make for more work. But heck, if one only wants to fly an ARF is the way to go (and I have a few of those too...). I reckon if I think wrong and propose something silly with these small modifications someone on this forum will say so. Quote Link to comment Share on other sites More sharing options...
Lucas Hofman Posted January 12, 2016 Author Share Posted January 12, 2016 On my way to the UK to, among other duties, collect the balsa ordered from the Balsa Cabin. Cross fingers it will survive the transport back. Quote Link to comment Share on other sites More sharing options...
AVC Posted January 12, 2016 Share Posted January 12, 2016 A bit chilly isn't it? Quote Link to comment Share on other sites More sharing options...
Lucas Hofman Posted January 12, 2016 Author Share Posted January 12, 2016 Not too bad. About -5C. Worse is the flight controller was malfunctioning. But then that gave me time to read up on all blogs Quote Link to comment Share on other sites More sharing options...
AVC Posted January 12, 2016 Share Posted January 12, 2016 As Monty Phyton said, always look at the bright side of life Quote Link to comment Share on other sites More sharing options...
Chris Barlow Posted January 12, 2016 Share Posted January 12, 2016 I can just imagine it! "Just popping to the shop for some wood/ Back in a day or two" !! Quote Link to comment Share on other sites More sharing options...
kc Posted January 12, 2016 Share Posted January 12, 2016 Lucas are you actually going to Maldon? Hope you made an appointment as the Balsa Cabin are not always open! Edited By kc on 12/01/2016 10:56:54 Quote Link to comment Share on other sites More sharing options...
Lucas Hofman Posted January 12, 2016 Author Share Posted January 12, 2016 No I am not. The balsa has been mailed to our office in Weybridge. By the way that office is on the old Brookland racetrack and airfield, so we are nextdoor to the museum. I often go there for lunch and then loose myself for an hour between old planes and parts thereof. Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted January 12, 2016 Share Posted January 12, 2016 Now that's what call dedication to the Mass Build! BEB Quote Link to comment Share on other sites More sharing options...
kc Posted January 13, 2016 Share Posted January 13, 2016 Lucas , the London Model Engineering exhibition is on Friday Saturday and Sunday if you are still in UK then. Quote Link to comment Share on other sites More sharing options...
Lucas Hofman Posted January 13, 2016 Author Share Posted January 13, 2016 Thanks kc, I would love too. But I have to be in the office in Oslo friday morning again. However, if the wood survives Heathrow and Oslo airport luggage handling I can start building in the weekend! Quote Link to comment Share on other sites More sharing options...
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