Former Member Posted March 19, 2008 Share Posted March 19, 2008 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Malcolm Fisher Posted March 19, 2008 Share Posted March 19, 2008 That thought occurred to me as I was reading this article.As I see it , it could be quite a job getting springs of the correct strength which will do the necessary while making sure that the u/c leg locks securely in either up or down position. Springs which are too strong could still cause the servo to be stalled - too weak and the legs wouldn't be secure in either position. Quote Link to comment Share on other sites More sharing options...
David Ashby - Moderator Posted March 20, 2008 Share Posted March 20, 2008 I can't quite visualise that Eric. The pic is from my Hanagar 9 Spit' and the retracts work well enough although retro fitting mechanical retracts to a built ARTf wing can be a nuisance Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted March 20, 2008 Share Posted March 20, 2008 This is odd. I just posted this 5 mins ago and it just didnt appear ?here we go again then THis is what Eric means I think - this is one I made up for the throttle linkage on my Spit - but same principle.I reckon Malcolm's comments are right though regarding using it on retracts. Quote Link to comment Share on other sites More sharing options...
Former Member Posted March 20, 2008 Author Share Posted March 20, 2008 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
David Ashby - Moderator Posted March 20, 2008 Share Posted March 20, 2008 Ahhh (illuminated light bulb above head) I see what you mean Eric, thanks Tim. I think it would still need careful set-up still but it's a good thought and funny as I've been playing mechanical retracts with a model this week ....and having lots of fun..... Quote Link to comment Share on other sites More sharing options...
Stephen Stockwell Posted March 21, 2008 Share Posted March 21, 2008 I Have been told yes cut the red wire but you must cut the black as well so you only have the white as the signal is this right. Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted March 21, 2008 Share Posted March 21, 2008 For what ?? Quote Link to comment Share on other sites More sharing options...
Stephen Stockwell Posted March 21, 2008 Share Posted March 21, 2008 sorry using the Y lead and another battery to power the retracts the leads going to the recivier you cut the red wire but I have been told to cut the black so it leaves the white wire just for the signal. Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted March 21, 2008 Share Posted March 21, 2008 No - you should tie the two negatives together.See this illustration to clarify. Click it for bigger image. Quote Link to comment Share on other sites More sharing options...
Former Member Posted March 22, 2008 Author Share Posted March 22, 2008 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Anthony Davis Posted May 27, 2008 Share Posted May 27, 2008 Colin,Thanks for a very interesting article. I'm totally new to this game (using retracts). Apologies if this sounds like a dumb question, but how do you determine what size and quality (plastic/metal etc) retract to use. I have aircraft with wingspans between 50" & 90" and have just received plans to build a 1/4 scale Spitfire. Does it depend on the aircraft weight? Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted May 27, 2008 Share Posted May 27, 2008 Yes, as much as anything - and your wallet Quote Link to comment Share on other sites More sharing options...
WILLIAM FINLAY Posted June 16, 2008 Share Posted June 16, 2008 Have a look at these alsohttps://smartweb.ipower.com/lado/product1.asp?value=300&productID=9 Quote Link to comment Share on other sites More sharing options...
Doug Ireland Posted June 17, 2008 Share Posted June 17, 2008 I Like It!!! Not too keen on the price though! Quote Link to comment Share on other sites More sharing options...
Anthony Davis Posted June 17, 2008 Share Posted June 17, 2008 Many thanks for the info. Looks like a nice piece of kit. Should be high in the reliability stakes with direct screw drives. Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted June 17, 2008 Share Posted June 17, 2008 I reckon with current exchange rates on the US$ they are not too bad. Quote Link to comment Share on other sites More sharing options...
Doug Ireland Posted June 18, 2008 Share Posted June 18, 2008 Just need to persuade the boss that I need a trip to our head office (in Oaklahoma) for a product survey!! Quote Link to comment Share on other sites More sharing options...
Former Member Posted June 18, 2008 Author Share Posted June 18, 2008 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted June 18, 2008 Share Posted June 18, 2008 I was well pleased with the quality of the stufff I had from them - and got them sent to me free of postage costs via a relative that has his own engineering and development company who lives a short distance from their "shop" Quote Link to comment Share on other sites More sharing options...
Tom Sharp Posted June 19, 2008 Share Posted June 19, 2008 one vital part needed with a retract set up is the ability to consistantly land on the runway Quote Link to comment Share on other sites More sharing options...
Former Member Posted June 19, 2008 Author Share Posted June 19, 2008 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Maurice Harvey Posted June 20, 2008 Share Posted June 20, 2008 With regard to retract servos the ideal would be a worm drive. This could be geared to give a realistic retract speed and would not transfer loads back to the servo motor. It would also be superb for flaps. Perhaps someone knows of someone who makes one? If so I would like to know the source! Quote Link to comment Share on other sites More sharing options...
Anthony Davis Posted June 21, 2008 Share Posted June 21, 2008 William Finlay posted this link. Could be what your looking for.https://smartweb.ipower.com/lado/product1.asp?value=300&productID=9 Quote Link to comment Share on other sites More sharing options...
Former Member Posted June 21, 2008 Author Share Posted June 21, 2008 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
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