Dave Hopkin
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By the position of the servos - have the servos facing in opposite directions Left hand wing with the output arm facing the tip and the right hand wing one also facing the tip Use the Y lead and they will work as an opposed pair
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Why not just have the club officials have an on-line spreadsheet (google docs for instance) where you record the Owner, the model and the engine, test date and results Update it with each test and it can be accessed at the field via a smart phone and not a tree needs to die
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Dont encourage them!!!! Someone in Crab Air will see this and try it with a full load of "Self Loading Freight"
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Changes by the hour but..... Lets Dance - Bowie Rockin the Casbah - Clash Theres a lot of clever ********** - Ian Dury
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Maths was never my strong point!
Dave Hopkin replied to David Davis's topic in Electric Flight for Beginners
An "800watt 790kv" motor will draw X current depending on the prop load you fit, bigger the prop the higher the current What you need to do is set the motor and prop up on a test rig and measure the current it draws turning your chosen prop Once you know the current draw from the bench test you can divide the battery mAH capacity by the current draw to give you a decent idea of the duration If you find you are drawing 20Amps at cruising speed then A 4000 mAH will give 4 Amps for an Hour, 20/4 = 5, 1 Hour /. 5 = 12 mins Estimated Current Draw / Battery Capacity = X 1 Hour / X = Duraction -
expo for beginners yes or no ?
Dave Hopkin replied to SONNY MONKS's topic in General Radio Discussion
I think you might be confusing EXPO and RATES.... Rates limits the total movement of the Servo from end to end, which limits the control surface movement Expo alters the sensitivity of the servo in the centre stick area but does not alter the total movement Rates are highly suitable for learners who tend to over control - setting rates reduced the violence of a full stick movement (though do try to treat the stick like a womans t.. not a Gorilla's throat) Expo can land learners in trouble as it tends to encourage over control as "nothing seems to happen when i move the stick a bit" -
Forum members' new models: Let's see them.
Dave Hopkin replied to Paul Marsh's topic in All Things Model Flying
Posted by Jon Laughton on 26/06/2018 06:01:15: Dave is this another of your Depron wonders or is it mixed media? Hi Jon No its all old fashioned Balsa!!!! -
Posted by SIMON CRAGG on 27/06/2018 17:45:54: Its a BH3720A-KV500 shich means nothing to me!. Do I just make sure I do not exceed the 40amps, or do I have to worry about amps and volts etc? Many thanks for your help so far! If this is the correct motor (its BM not BH) **LINK** Then its rated for 3 to 4 Cell Lipos With a max current of 35a continious 49a burst
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Posted by john stones 1 on 27/06/2018 18:27:27: Willie Messerschmitt, Kaiser Wilhelm, Irving Berlin Your boys took a hell of a beating. How will I ever get over the mighty boche being knocked out........ Oh wait, I have,............. Fritz your plane leaves in 20 mins gate 4 see ya.....
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Forum members' new models: Let's see them.
Dave Hopkin replied to Paul Marsh's topic in All Things Model Flying
Posted by Chris Walby on 25/06/2018 21:19:40: DH, Nice photo Could you post details of the model please Its from the "Flying Scale Models" plan by Paul Tupker 44" Semi-Scale Gloster Meteor IV 2 x 70mm EDF running on a 4S 5000mah Lipo Seems to be fully aerobatic (though I am nervous of the wing joiners between the inner and out wing panels where the fan ducts are!) Aileron, throttle and Elevator controls only I deviated from the plan in a couple of ways... 1) Elevator Servo is a thin wing servo embedded in the horizontal stabiliser 2) I had two or three goes at the wing - the plan says to build a centre section and two outer panels then join them with the Fan formers as dihedral braces - of course this means you cant set the wing up on a flat surface as the lower portion of the fan former hold it up in the air! In the end I gave up that idea and just built the wing in two halves (ignoring the fan formers) - set the wing up, then added the formers afterwards and cut away the portion of the wing structure afterwards Edited By Dave Hopkin on 25/06/2018 21:43:09 -
Forum members' new models: Let's see them.
Dave Hopkin replied to Paul Marsh's topic in All Things Model Flying
Finally got it trimmed and a decent flying shot..... Edited By Dave Hopkin on 25/06/2018 20:40:15 -
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Do you mean these RDS Adaptors? **LINK**
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I work in the Finance Industry and NO UK Bank will EVER send you a link to click on to enter your on line bank application - Any text or email you may receive that includes a clickable link is a SCAM Never ever open it What it will do in 99% of the cases is collect your security details and transmit them to a (criminal) 3rd Party If you get an email that makes you want to check your accounts go to google and enter the on-line baking system from google NEVER from an email
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Not sure why you felt livid - the law is clear you may use reasonable force to defend yourself But there is a dead body that certainly didnt die from natural causes so the police are duty bound to investigate the circumstances and make a recommendation to the CPS who will make the decision to prosecute or not If the police and the CPS believe "reasonable force" was used no charges should be brought against him So getting livid at the moment is a little premature - wait until the CPS make a decision
