Tom Wright 2 Posted September 20, 2013 Share Posted September 20, 2013 Hi All I bought an Auto -G some time ago simply out of curiosity ,and have found it to be a very credible affordable entry level model for rc pilots that prefer instant gratification rather than a build . The elevator as opposed to a dual axis head makes things much simpler , and reduces the chance of boom strikes , along with no mixing required and easy trimming but ! I found the flex plate and blades became a problem if the model was flown often or subjected to the inevitable bad arrivals and enthusiastic aerobatics. A practical solution to buying replacement parts was needed so I decided to investigate the possibilities of replacing the the two bolt blade attachment , blade holder ,flex plate ,and blades. This mod was devised and fitted very quickly using ready made parts from AJ Blades and Coolwind Models the model flies impeccably and no longer suffers the weaknesses found with the stock model . If any of you are interested I can post details of how the conversion was done, if not at least my Auto - G is now very cheap to maintain ,and free from the frustration of waiting for parts to be restocked.. Tom. Quote Link to comment Share on other sites More sharing options...
Frank Skilbeck Posted September 20, 2013 Share Posted September 20, 2013 Yes please Quote Link to comment Share on other sites More sharing options...
crispin church Posted September 21, 2013 Share Posted September 21, 2013 yes bring it on show us i gone to 1 bolt on blades with tooth pick in other and use plastic Y piece Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted September 21, 2013 Author Share Posted September 21, 2013 OK Guys thanks for looking in , this is the method I used based on the balsa /spruce blade set from AJ Bades and the plate conversion kit from Coolwind Models . The first job is to remove the stock flex plate assembly to leave the bearing holder and control arm with a 35 mm cap head bolt retained with a 3mm loc nut tightened to allow the bolt to rotate freely . I don't think you will need further prompting to get to this stage as the process is very simple. All the additional nuts ,bolts, washers , flex plate parts , shims and blade root parts are included in the conversion pack from Coolwind Models. The photo shows how things should look after stage one. The four self tapping screws that hold the bearing holder to the mast can now be replaced. Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted September 21, 2013 Author Share Posted September 21, 2013 Stage two preparing the blades. Prepare the blade roots with the components supplied in the Coowind kit as shown on page 17 in this PDF . The photo shows the blades as received from AJ Blades. I have marked the root trim back points as this ensures that all the blades will be prepared to rotate anticlockwise . I should mention that this conversion was carried out on the G1 , I have not looked into the suitability for the G2 . Edited By Tom Wright 2 on 21/09/2013 19:55:10 Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted September 21, 2013 Author Share Posted September 21, 2013 The blade length will require trimming off to ensure clearance to the fin , make sure this is done accurately using a set square and double check that exactly the same amount is removed from each blade . I cheated by trimming a little of the fin leading edge ,this allowed the blade length to cut to 403 mm. If you don't want to attack the your pristine fin then the blades should be cut to around 393 mm but do a trial fit before cutting to length. Just going back to the first photo please note that the 3 mm nut is intentionally fitted upside down to give a base for the load spread washer ( supplied in the Coolwind kit ) that will fitted during the final assembly . More tomorrow.. Tom. Quote Link to comment Share on other sites More sharing options...
crispin church Posted September 22, 2013 Share Posted September 22, 2013 my head servos broken the gears so i put one full size towerpro mg in middle of master works great i got one of the orange rx with 3 axis thing built in thinking of trying it in the auto G Quote Link to comment Share on other sites More sharing options...
Foamie Dave Posted September 22, 2013 Share Posted September 22, 2013 Nice one Tom, I have a G1 in need of such ...erm.. aftermarket modification Watching closely !! Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted September 23, 2013 Author Share Posted September 23, 2013 Crispin Yep one MG 90 works well , I have flown mine with a single servo for quite a while now . Tom. Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted September 23, 2013 Author Share Posted September 23, 2013 Dave You may well have got well past the G1 stage, but it's worth resurrecting the model with the up dates as it's one that can be used to show other pilots how easy to fly this type of auto gyro format can be. and as a reliable hack for those quick excursions to the field. Tom. Quote Link to comment Share on other sites More sharing options...
Foamie Dave Posted September 23, 2013 Share Posted September 23, 2013 Posted by Tom Wright 2 on 23/09/2013 12:07:49: Dave You may well have got well past the G1 stage... Tom. Oh, I can still plant them as good as anyone...believe me, I have witnesses Great informative advice as always Tom , I can feel another shopping list coming on !! Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted September 23, 2013 Author Share Posted September 23, 2013 OK on with the next stage, use the blade nuts bolts and load spread washers to to attach the blades to the plate. Now it's important to establish how much blade to plate clamping pressure is required , if to slack the blades will flop about, or if to tight they will take time in flight to find there natural position ,or if way over tight they may never find position so this will result in shake and poor lift . Try to get the bolt torque reasonably equal on all three to prevent any one of the the blades remaining out of position in flight. Place a load spread washer over the rotor bolt then fit the flex plate with the large gf washer supplied underneath, add another load spread washer on top of the flex plate and secure with the 3 mm loc nut supplied. Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted September 23, 2013 Author Share Posted September 23, 2013 This conversion was done quite some time ago and before the plate kit was available from Coolwind Models, so do expect the kit components to be nice and shiny and very accurate unlike my make do and well used parts. Plate assembly shown from the underside. Top view. Ready to go. My conversion resulted in more lift and very smooth rotor performance. I hope others get the same results. Despite a fair bit of knocking about by students ,my model has not needed any head or blade repairs or replacements. A photo of Crispins centre mounted single servo would be useful as I have taken the lazy option with one side mg servo operating the roll arm via one push rod . Tom. Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted September 23, 2013 Author Share Posted September 23, 2013 Thanks for the comments Dave ,if you get round to sorting your model may be you could post some of your great photo shots . Sorry I missed out on Sunday , the weather was perfect ,will look forward to seeing more over on the the "Get together" thread.. Tom. Quote Link to comment Share on other sites More sharing options...
Foamie Dave Posted September 23, 2013 Share Posted September 23, 2013 Cracking info as always Tom, got a couple of projects in mind for winter so I'll add the Auto-G mod bits to my ever -increasing shopping list To say mine is currently a bit battlescarred is an understatement....this was from Saturday...it was a bit shorter after Sunday ..hence the mods Shame you couldn't make it Sunday, another cracking event, you'd have loved it !!. I'll get some pics over on the thread over the next day or so. PS bumped into Malcolm from Coolwind,...think I'll be keeping him busy Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted September 25, 2013 Author Share Posted September 25, 2013 Great photos Dave . You should be able to do as many loops as you like with the upgrade kit fitted . Tom. Quote Link to comment Share on other sites More sharing options...
Foamie Dave Posted September 25, 2013 Share Posted September 25, 2013 Posted by Tom Wright 2 on 25/09/2013 10:43:43: Great photos Dave . You should be able to do as many loops as you like with the upgrade kit fitted . Tom. The top half of the loop is always fine, its the bottom bit that modifies things Shopping list currently in progress for a spendy spree ! ! Quote Link to comment Share on other sites More sharing options...
Mowerman Posted October 17, 2013 Share Posted October 17, 2013 Ordered the Auto G delta plate conversion kit from Coolwind Models Tuesday at 5.30 pm. Royal Mail delivered at 10.30 am Wednesday. 17 hrs from order to delivery. Wow! Can anybody beat that? Quote Link to comment Share on other sites More sharing options...
Foamie Dave Posted October 17, 2013 Share Posted October 17, 2013 Can anybody beat that? Think I'm on my third or fourth order and each one has arrived within 24hrs I'll time my next one and see if I can beat you Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted October 17, 2013 Author Share Posted October 17, 2013 Roy Let us know how the conversion goes . All I had a super fast Coolwind delivery this morning, well packed and presented, and with a proper invoice . Keep up the good work Malcolm. Tom. Quote Link to comment Share on other sites More sharing options...
Mowerman Posted October 21, 2013 Share Posted October 21, 2013 Tom Will do, but may be some time due to bad planning I have 2 builds on the go. Started a Magister then ran out of balsa so started a Polaris then ran out of depron. then I broke the Auto G, so you can imagine the state of my bench. Due to SWMBO being unwell, getting to LMS a bit of a problem at the moment. Initialy intended to use the Auto G blades but re-built with balsa in the plastic leading edge. A bit of a job removing the old foam so ordered a set of blades from AJ 'just in case' Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted October 22, 2013 Author Share Posted October 22, 2013 Having completed the head and blade conversion, I have now replaced the stock trim with a simple but more serviceable alternative. Quote Link to comment Share on other sites More sharing options...
Foamie Dave Posted October 22, 2013 Share Posted October 22, 2013 Nice job...looks like racy time Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted October 22, 2013 Author Share Posted October 22, 2013 Thanks Dave ,just need to re do the mast covering.. The fus sides are sheeted with 1/32 . Quote Link to comment Share on other sites More sharing options...
Mowerman Posted October 22, 2013 Share Posted October 22, 2013 The couple of times Mine actually flew were not very sucessfull, took off OK but having reached about 10 feet would not climb any further. I tested the motor with a wattmeter and tacho standard 3 blade prop 3 s 1300mah lipo ( also tried 2200mah, same results) initially got 148W @12.7V 13000rpm after about half a min running this settled to 130W @ 10.7V 10000rpm. Any comments? Edited By Mowerman on 22/10/2013 19:51:01 Quote Link to comment Share on other sites More sharing options...
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