Paul Turner 2

Thanks Eric

It's a BVM Super Bandit. I looked about for info including in the official docs but didn't find anything and unfortunately it doesn't like anything is on outerzone. I'm scaling it to be the correct size for my 90mm Jetfan

Thanks for replying :) Nope I have no formula. At the moment I have a rough plan (the diagram I downloaded) but that's all. I can model to that but as I said, I don't know how accurate it is. I Don't have much experience with aerodynamics and what things really matter when considering a project like this. But I'm guessing that just guessing on stuff probably wouldn't work out for the best. Just thought it'd be wise to ask the questions before putting the hours in only to find it flies like a brick :)

Hi all, I've modeled an EDF jet in Fusion360 from a top and side view that I found online, similar to how the guy has done it in THIS video (but it's a different model). I have been unable to find a front view. I don't know how accurate the reference pictures are in comparison to the actual model. On the side view, it gives rough lines of the airfoils but there is no supporting detail about what airfoil should be used, and I can't find any info on other things such as angle of incidence, amount of dihedral etc. Is it a bad idea to undertake a scratch build project without having this kind of detail? Also I've tried to model it as accurately as possible to the diagrams and in conjunction with real pictures but It's never going to be 100% faithful. In this case could these small details be the make or break on if it'll fly well? My plan is to use CAD because I want to be able to split the fuselage into 50mm sections (to get the profiles and cutouts etc) so I can then cut the sections out of XPS foam with a hotwire. Your thoughts would be appreciated!

I have heard of the ISDT brand because I have one of their cell voltage / balancing devices. Whats your thoughts on the P30 you own, are you happy with it? I see it is capable of 1-8S and has 1000W per single channel or 1500W total. I've been looking at this guide. My biggest 8S batteries are 4400mah so I have calculated that W = A x V so W = 4.4 x 33.6 = 147.84 W per 8S battery. The bit I'm not sure about is when parallel charging, is it 4 x 147.8W = 591.2W total or does the wattage change (increase?) when charging in parallel? Also I'd be interested to know which balance boards you use with it. Thanks a lot! Paul

Hi Everyone, I have various Lipo batteries from 2-8s. I haven't yet used the 8S batteries as I don't currently have a need for them but I will in the near future. I currently charge my 2-6S Lipo's using 3 separate old IMAX B6 chargers to charge one battery at a time on each which gets the job done but I'm considering an upgrade to a single charger that I can charge multiple batteries on. I know some chargers have 4 separate charging channels but I haven't been able to find anything that does up to 4x 8S batteries. I believe some people use parallel charging boards off of a single charger. Do you have any recommendations on what may be a good bet at a sensible price? Would I need an external power supply? When charging multiple batteries, do they all have to be the same cell count and capacity? either on a 4channel charger or with a parallel charging board? Thank you! Paul

I guess it's not so bad having to remove the wing if you're getting 20 min each go! I was considering strengthening the undercarriage fixing on the fuse, but hadn't considered how yet - any pics you can provide on what you guys have done would be helpful ? Cool - Will keep these mods in mind, is there any other weaknesses or beneficial mods you recommend? Being honest, don't know what this is - will look up Cheers all, Paul

Thanks for your replies guys, If I can get the battery to fit in from the top without having to take the wing off then that would be great, I'm not sure what the differences are between the WOT4 MK2 and the WOT4 Pro, is the size the same ? John did the standard elec kit all fit in with no other mods required ? It looks like the instructions were saying about a protruding tab that is suppose to interlock into the battery tray to hold it in position which I don't appear to have.

Hi All, I have a WOT4 MK2 (A-CF002/LEO) ARTF that has been in a box in the loft for years and I want to convert it to electric power. From what I gather, it looks like there were different versions of the the MK2, I think the later one could be either IC or EP but I assume the version I have is the earlier iteration and is for IC only. The IC/EP manual (a-cf002-a) shows that the cap at the front cockpit area is removable and has a spring-loaded lever, but mine doesn't have this. The Foam-e version (a-cf003a) shows a hatch on the underside in front of the UC, I also found another conversion document (Wot4-Elec-Conv - not sure if this is intended for the ARTF) which shows a hatch being cut on the underside behind the UC. I plan to use 3S 5A or 4S 3.3A Lipo's. Any recommendations or words of advice on how best to approach this before I embark ? Thank You, Paul a-cf002-a.pdf a-cf003a.pdf Wot4-Elec-Conv.pdf

Thanks for all of your recommendations ! I've opted for a nano-tech from HK. I need two and they are £70 each, my understanding is that I will get import charges if the total of the goods exceeds £135 as mentioned HERE so for now I've only ordered the one and will order another in a week or so ? ?

Hi All, As per the thread title, just wondering where is a good place to buy reasonably decent budget friendly Lipo packs either locally or abroad (and avoiding import charges if possible!) Many Thanks, Paul

Thanks for the replies. Colin, what do you mean by the lift generator tabs ? Do you mean the tabs that you screw into to secure the wings in place ? It great to hear that every one rates my purchase decision. I have just recently ordered the bits for my power system, which I decided on by playing with the propcalc website. Gone for a 4s 3300 (over the recommended 3S 2500), Turnigy SK3 4240-620Kv, 45A YEP ESC, 13 x 8 prop. This gives a thrust to weight ratio of about 1.25 : 1 and a flight time of around about 7-8 minutes. Hopefully this will be suitable. What setups are you guys running in your 30's and what sort of flight times are you getting? @Jon, do you find that by using nylon bolts for the undercarriage sees them breaking off regularly? I had this problem with my Acrowot, but then again it's probably 3 times the weight of what the Angel will be! Cheers all P

Hi all I've just started the assembly of my Seb-Art Angel 30. I thought I'd ask to see if anybody has any direct experience with this model and if there are any known weak points that might need reinforcing, or any mods that I could / should consider during assembly ? Many Thanks Paul Edited By Paul Turner 2 on 15/03/2017 23:59:06

Thanks for your input guys, Peter thanks for your info about trimming, it's not something that I have done before (well not properly anyway) but I have a document that I downloaded a while back by Peter Goldsmith on trimming. I will use your info along with his to try and get it set up as good as possible, and if I'm not sure there are plenty of experienced pilots at the local club that might be able to advise. Regarding batteries, motor & prop selection, as previously mentioned I have 2x 4S 2200 35-70C, 2x 4S 2650 25-50C, 2x 4S 3300 25-50C Any suggestions as which would be best and what motor and prop size combination is recommended ? Many thanks Paul

Thanks for all your advice I've opted for the Angel 30e as I had the lipo's and it was a fair bit cheaper. I think I'll see how I get on with it and if I like it, maybe I'll spend more money on the next model. I'm sure it'll have much better flying characteristics than my acrowot brick ! Paul