Danny Fenton Posted October 3, 2010 Author Share Posted October 3, 2010 Hi Tom and Will, I ended up having to attend a family function so didn't get my promised "Cave time" so that motor information is great Tom. What RPM did you record at that current? 1320 watts is still workable. depends on the RPM and final AUW. Hi Will, The BT Spit is nice but very much a longer term project than the TN one. 8S would work better, the reason I don't want to go to 8 If I can avoid it is I want to go 2P. 6S2P is twelve cells x 65g (780g) and 8S2P 16 cells x 65g (1040g) 8S (28.8V) would just sneak in tolerance My Hurricane at 14lbs, will cruise S&L on 400 watts, but it takes a bit more than that to take off and do aeros. Cheers Danny "God's teeth!"Edited By Danny Fenton on 03/10/2010 21:39:06 Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted October 6, 2010 Author Share Posted October 6, 2010 I know this is a Spitfire thread but thought you might like to see the first test of some Air up air down Unitracts retracts, in case you are considering a set. These are in my BT Hurricane. I am having to use the plastic bottle supplied by Tony as I am short a t-piece to join the twin tanks going in the fus. The test was started at 80 psi and only lost 10 psi. I will see how much has been lost by the end of the day, (If I can resist making the legs go up and down ) I am only used to the retracts that come with the YT models and these from Unitracts are infinitely better, solid and smooth....... First tests of Unitracts air up air down Cheers Danny No BoB quote as off topic Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted October 6, 2010 Share Posted October 6, 2010 Very nice Danny - is the slow operation controlled by a separate restrictor, or is this built into the main valve? Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted October 6, 2010 Author Share Posted October 6, 2010 Hi Tim, there is an adjuster built into each retract unit. I haven't moved it. There is absolutely no wobble in any direction when up or down, really very nicely made. It was stated in another thread that you didn't get an air bottle, well I did with this, as well as all tubing, t-pieces etc etc. PS still says 70Psi on the dial Edited By Danny Fenton on 06/10/2010 11:28:42 Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted October 6, 2010 Author Share Posted October 6, 2010 My CNC and wood pack has arrived Quote Link to comment Share on other sites More sharing options...
Herri Posted October 6, 2010 Share Posted October 6, 2010 Looking forward to seeing the first pictures Herri Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted October 6, 2010 Author Share Posted October 6, 2010 Hi Herri, not much of a first picture I am afraid, but a stack of wood 6" tall and 9" wide "Don't threaten or dictate to us until you're marching up Whitehall" Might have to abandon the quotes on every thread lol, they take longer to find than doing the post itself Tally Ho! Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted October 6, 2010 Share Posted October 6, 2010 NNNNOOOOO - the quotes are the best bits - I love the idea, especially the thread title. "Let's make it eleven before Jerry has you for breakfast! " Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted October 6, 2010 Author Share Posted October 6, 2010 The best bits .....mind you its taken three pages to see some wood okay we shall try and continue with the quotes lol "I was wrong about the Poles" Quote Link to comment Share on other sites More sharing options...
Chris Bott - Moderator Posted October 7, 2010 Share Posted October 7, 2010 Nice to see that wood Danny, it's not your fault it didn't arrive quickly. I've been refraining from posting so we don't use quotes up too soon Trouble is now, I already can't remember what's gone before so we can't be far off a duplicate. (I'm not too keen on checking the whole thread every time lol) How's the wood selection anyway? "....was when we tried to land." Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted October 7, 2010 Author Share Posted October 7, 2010 Hi Chris the wood is possibly not as light a grade as I would choose. And the bulkheads are very thick birch and lite ply. So I think a few bits will be substituted for thinner stock. I am in two minds about replacing the wing ribs and some tail bulkheads with balsa ones. Not comfortable with lite ply wing ribs. Wasn't very nice trying to work with them on a Pupeteer that you may remember? Anyway we will see what weight can be shaved off here and there....... "We were up, sir, trying to knock out the enemy air mass" Quote Link to comment Share on other sites More sharing options...
David Ashby - Moderator Posted October 7, 2010 Share Posted October 7, 2010 Good stuff, have you decided on a scheme Danny? "...or you'll be spread all over the field like strawberry jam, never again, clear!" Edited By David Ashby - RCME Administrator on 07/10/2010 10:17:17 Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted October 7, 2010 Share Posted October 7, 2010 Posted by David Ashby - RCME Administrator on 07/10/2010 10:16:58: "...or you'll be spread all over the field like strawberry jam, never again, clear!" "Don't you yell at me, MR Warrick /Ashby !" Hee Hee Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted October 7, 2010 Author Share Posted October 7, 2010 Hi David, I change my mind on schemes daily lol but at the moment I am drawn to the Spitfire MkI flown by PO Pegge, it flew in the BoB and Pegge survived the war. It flew out of Biggin Hill in 1940 with 610 Sqdn. It also has my innitials DWF Not sure about the enlarged Roundel may have to use a little poetic license there I heard some sad news this morning about an RAF pilot that flew in the war, he passed away on Sunday. He flew a Mossie. They are getting fewer and fewer. It may sound silly but flying the warbirds always make me think of how brave they all were. Quote Link to comment Share on other sites More sharing options...
Hugh Coleman Posted October 7, 2010 Share Posted October 7, 2010 I like the Early Mark schemes with the broad yellow border around the roundel. The yellow there and on the leading edges sort of sets it off. "When are you going to apply for that Transfer?" Cheers, Hugh Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted October 8, 2010 Author Share Posted October 8, 2010 Hi Guys, heres a brain teaser for you. The free plan is multi sided that came with the magazine. You have a left and right hand wing panel to construct but only one is on the plan. Often the method is to rub the plan with a light oil to make the plan slightly translucent. Not so good when the other side is full of the rest of the plan I am happy enough to trace the outline of spar locations etc, and build off a very rough outline. What does the full size plan show? two panels?? Cheers Danny Quote Link to comment Share on other sites More sharing options...
Herri Posted October 8, 2010 Share Posted October 8, 2010 Yes the second panel is shown dotted and finer, under the ribs so to speak. Down on this corner of the sheet. Heres a better pic. Cheers Herri Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted October 8, 2010 Author Share Posted October 8, 2010 Hi Herri, they are not included on the set that came free with the magazine, nor the set from MyHobbyStore. Thats not very good....... Thanks for checking Cheers Danny Quote Link to comment Share on other sites More sharing options...
Al Knights Posted October 13, 2010 Share Posted October 13, 2010 Watching with very careful interest Danny Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted October 20, 2010 Author Share Posted October 20, 2010 Hi Alan, good to have you along. Managed to spend a chilly few hours in the garden and have some numbers. A bit dissapointing really but It just means I have to up my cell count as everybody had guessed already. The weights at the bottom show the comparrison between the teo front runners. And also highlight that LiPos are not that much lighter, bearing in mind the safety and convenience (no hatch and charge in situ) Now just need to see if Electric wingman will do two flat 8S packs for me "Don't just look, search for the ba.........!"Edited By Danny Fenton on 20/10/2010 17:57:25 Quote Link to comment Share on other sites More sharing options...
Herri Posted October 20, 2010 Share Posted October 20, 2010 Interesting stuff Danny. I'm confused though as you get 1232 W with 8S A123 and yet 1274 W with 7S? Does it make a difference how the packs are made up? Herri Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted October 20, 2010 Author Share Posted October 20, 2010 The 7S pack is 2P 14 cells, the 8S pack is 1P only 8 cells. The added capacity means the voltage holds up better. I have just double checked the cell weights for A123 and the numbers are not as good as stated in my previous mail. I have amended the table....... May have to buy LiPos Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted October 20, 2010 Author Share Posted October 20, 2010 The weights I mention haven't come out for some reason. It should give the comparitive weights as: 6S 5000 lipo as 812g 8S2P A123 as 1280g Cheers Danny Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted October 20, 2010 Share Posted October 20, 2010 Posted by Danny Fenton on 20/10/2010 18:28:29:The 7S pack is 2P 14 cells, the 8S pack is 1P only 8 cells. The added capacity means the voltage holds up better. I have just double checked the cell weights for A123 and the numbers are not as good as stated in my previous mail. I have amended the table....... May have to buy LiPos Quote Link to comment Share on other sites More sharing options...
Herri Posted October 20, 2010 Share Posted October 20, 2010 So whats the bottom line Danny? Which motor / battery combination will it be? Herri Quote Link to comment Share on other sites More sharing options...
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