Stephen clarke 3 Posted February 10, 2019 Share Posted February 10, 2019 I'm currently building my 1st Acrowot kit and wanted some advise on how to position the engine mount. Thanks in advance Quote Link to comment Share on other sites More sharing options...
kc Posted February 11, 2019 Share Posted February 11, 2019 Stephen, no replies so far- possibly because you posted late at night. But possibly because you didn't give all the info about which engine - 2 stroke or 4 stroke - etc. and which Acrowot. Give some more info and I am sure you will get some sound advice. I have an old Acrowot of the original 58 inch size which had an OS 46 two stroke and later re engined with an Enya 40SS 2 stroke and I could give details but there may be other people with exactly the same engine you have which may be more relevant. Quote Link to comment Share on other sites More sharing options...
Jon H Posted February 11, 2019 Share Posted February 11, 2019 The AW kit has the provision to move the firewall to suit your engine. All you need to do is work out how long your engine is with its mount and go from there. If in doubt plonk the engine+mount on the plan and see how it all lines up. Quote Link to comment Share on other sites More sharing options...
Glenn Philbrick Posted February 11, 2019 Share Posted February 11, 2019 I assume you are building the kit and not an ARTF? The descision on the engine mount is weather to mount it side on or inverted, I have done both and find that side on is more convenient for starting but does mean quite a lot of the cowl side cheek is cut away. If you are using a big engine you ,may need to move the firewall back slightly and this is dealt with in the instructions. I have used a 91FS in most of mine. The undercarriage is the weakest link in all forms of Acro Wot so a bit of reinforcing around this area will help, but I do away with the metal fixings and replace them with 2x 6mm plastic bolts so that they break before ripping the undercarriage out. The Acro does tend to bounce a little on landing in any slight wind. If you make a spacer as shown then the bolts are easily removed to replace them. As far as other mods some have moved the tailplane lower to make knife edge easier I have tried this but wouldn't bother just need a bit of elevator to make it track straight. Hope this helps. Quote Link to comment Share on other sites More sharing options...
ken anderson. Posted February 11, 2019 Share Posted February 11, 2019 hello Stephen and welcome from me.the answer to your question is...which engine are you going to fit?2st or 4st...then is it going inverted .side ways of normal way up......if its a kit build...there are a few mods you can incorporate into the build as you go..... fire away with as many questions that you have...and check out via the search on the forum here there are a few Wot builders on here... ken anderson...ne..1....A/Wot dept. Quote Link to comment Share on other sites More sharing options...
Stephen clarke 3 Posted February 12, 2019 Author Share Posted February 12, 2019 Thank you all as I'm new to building but it's the kit acrowot and not the artf. I'm putting a os 55 ax 2 stroke in. I'm just confused as to where the engine mount is positioned. Thanks Quote Link to comment Share on other sites More sharing options...
Stephen clarke 3 Posted February 12, 2019 Author Share Posted February 12, 2019 Thank you all as I'm new to building but it's the kit acrowot and not the artf. I'm putting a os 55 ax 2 stroke in. I'm just confused as to where the engine mount is positioned. Thanks Quote Link to comment Share on other sites More sharing options...
Stephen clarke 3 Posted February 12, 2019 Author Share Posted February 12, 2019 I will post pics of what ive done already at the end of this week. All advice and guidance is much appreciated Quote Link to comment Share on other sites More sharing options...
Stephen clarke 3 Posted February 12, 2019 Author Share Posted February 12, 2019 I have had the acrowot artf version with a TT 75 fs up front do I know how they fly but unfortunately due to dumb thumbs I crashed it. Hopefully get my kit built in time for summer Quote Link to comment Share on other sites More sharing options...
Tim Flyer Posted February 12, 2019 Share Posted February 12, 2019 The engine needs a couple of degrees of right thrust on the Acrowot. Chris Foss’s instructions have the angle . You can eithe use small fillets or buy the SLEC purpose built wedges. The important thing is to make sure that the spinner plate ends up central despite the right thrust. That means the rear of the engine is mounted slightly to one side. It can either be accomplished by eye ( taping a ruler down the centre of fuselage) or more accurately using trigonometry 😉. Quote Link to comment Share on other sites More sharing options...
Tim Flyer Posted February 12, 2019 Share Posted February 12, 2019 The AX 55 will be perfect by the way I’m using one at the moment in my kit Acrowot in my user picture Quote Link to comment Share on other sites More sharing options...
Jonathan M Posted February 12, 2019 Share Posted February 12, 2019 Posted by Stephen clarke 3 on 12/02/2019 10:16:54: Thank you all as I'm new to building but it's the kit acrowot and not the artf. I'm putting a os 55 ax 2 stroke in. I'm just confused as to where the engine mount is positioned. Thanks I will post pics of what ive done already at the end of this week. All advice and guidance is much appreciated That would be of interest - I lost my own ARTF AW recently and am thinking of a kit version for the engine that survived. I'd still be inclined to use nylon bolts for the U/C. Quote Link to comment Share on other sites More sharing options...
kc Posted February 12, 2019 Share Posted February 12, 2019 The problem with using nylon bolts for the undercarriage is that if they snap in a hard landing the u/c flys back and cuts two notches in the tailplane! At least that's what happened when the u/c was alloy. It was common to see those notches on lot's of Acrowots. People preferred to use steel bolts for that reason. Quote Link to comment Share on other sites More sharing options...
kc Posted February 12, 2019 Share Posted February 12, 2019 One of the oldest tips about building from kits is to draw around every part onto a sheet of paper before you start. Including the shape of the airfoil at root and tip if it's a foam wing. Then you have a plan for each component if you have any sort of crash a replacement part can easily be cut from balsa or ply or a foam wing made. That way any crash is probably repairable unless the model is too oil soaked. ARTF model can also be repaired see the 2 part article by Peter Miller under 'Features - Building Technique ' at the top of this page. Edited By kc on 12/02/2019 13:08:22 Quote Link to comment Share on other sites More sharing options...
Jonathan M Posted February 12, 2019 Share Posted February 12, 2019 Good points KC. Re the U/C, perhaps the nylon-bolt solution is only really applicable to the ARTF version, but less so on a more robustly made kit? On my ARTF, before I switched away from the steel bolts supplied, a bloody great mole hill reared up right in front of a dead-stick landing - ripping off not just the U/C but the whole of the underside section to which it was bolted! In the several later occurrences of rough landings where the nylon sheered (sometimes just one side only), scarring of the tail didn't happen, but would have been a very minor price to pay compared to a nose-area rebuild. Quote Link to comment Share on other sites More sharing options...
Jon Laughton Posted February 13, 2019 Share Posted February 13, 2019 Steve - after your message I left you a pm to contact me? In the build there are generally recommended strengthening mods such as glassing the inside of the forward fuselage with light cloth from the rear of the firewall to the cockpit area, fixing the firewall with cocktail sticks and adding triangular gussets to the inside forward fuselage structure. Acrowots are tough models anyway but these make sure it will stay in one piece forever (almost!). Personally I always used nylon bolts on mine to fix the u/c to the fuse but the points made here for and against both have merits so it is a matter of personal choice...call me to discuss more. Jon Quote Link to comment Share on other sites More sharing options...
Stephen clarke 3 Posted February 16, 2019 Author Share Posted February 16, 2019 I'm after purchasing some glue. Where's the best place to purchase from also do I use z poxy or e poxy for the wrap around the wing. Thanks in advance Quote Link to comment Share on other sites More sharing options...
Former Member Posted February 16, 2019 Share Posted February 16, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Jonathan M Posted February 16, 2019 Share Posted February 16, 2019 For construction generally I’d use Aliphatic Resin - dries quicker than PVA and is relatively easy to sand. I’d use Poly-C for the bandage: **LINK** If you do use epoxy for localised strengthening of components, then make sure the joining areas are well keyed (roughed up) first, and the slower and more liquid the better for maximum penetration. If the epoxy is to fill an area, then thicken it with filler when mixing. Quote Link to comment Share on other sites More sharing options...
Former Member Posted February 16, 2019 Share Posted February 16, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Stephen clarke 3 Posted February 25, 2019 Author Share Posted February 25, 2019 Where can I purchase the material that you use to wrap around the wing as I take it you can use this in and around the fuel tank area for more strength. Quote Link to comment Share on other sites More sharing options...
Jon Laughton Posted February 25, 2019 Share Posted February 25, 2019 Steve just search for ‘wing bandage’ at any rc model shop on line. Alternatively visit the Bucks composites web site Quote Link to comment Share on other sites More sharing options...
Jonathan M Posted February 26, 2019 Share Posted February 26, 2019 **LINK** or **LINK** Quote Link to comment Share on other sites More sharing options...
ken anderson. Posted February 26, 2019 Share Posted February 26, 2019 have a look also at this one Stephen...….any bandage left,use it to line the tank/undercarriage area before you fit the top deck to the front of the fuz…. ken anderson...ne...1...bandage dept. Quote Link to comment Share on other sites More sharing options...
Wilco Wingco Posted November 20, 2019 Share Posted November 20, 2019 Hi chaps. I bought a, Mk1 kit built Acrowot at the Southern Swap Meet at the w/e. All fine but one of the aileron horns is broken and I can't find a replacement on the net. I bought a set of 12 swg but they are too small to screw on. Can anybody help please. Quote Link to comment Share on other sites More sharing options...
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