John Tee Posted January 14, 2021 Share Posted January 14, 2021 Hi, Has anyone used this balancer jig please?. It assembles easily but having trouble with deciding how to fit the scale markings to the arms. The instructions state - move the stops until they touch the central pivot and making sure the arm is level mark the arm. This equates to the 45mm position. Doing this as I read it means the scale overhangs the arm by some 40 mm. If I just stick the scale on the arm with the zero point (marked on the scale sticker) in line with the pivot point, the scale fits the arm and the 45mm mark aligns with the scale. I don't want to keep sticking the scale on and removing it in case it tears or stretches. Just a little bit confused. John edited for an omission Edited By John Tee on 14/01/2021 17:20:18 Quote Link to comment Share on other sites More sharing options...
Broken Prop Posted January 14, 2021 Share Posted January 14, 2021 Hi John I have used one of these balances for years and it works well. I set it up as you describe, with the zero point in line with the pivot and it works fine as the scale then gives the correct distance from the leading edge to the CG position. In use, the arms can stick a little and moving the adjustable weights does not have much effect. Try tapping the uprigths gently and the arms will then settle into a horizontal position. It just takes a little practice. good luck pete Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted January 14, 2021 Share Posted January 14, 2021 Schwerpunktwaage, what a fantastic name for sumat. Vorsprung balancing doodah. Quote Link to comment Share on other sites More sharing options...
Phil Green Posted January 14, 2021 Share Posted January 14, 2021 Why though when Vanessa costs nothing, is easier and more accurate? 1 Quote Link to comment Share on other sites More sharing options...
John Tee Posted January 14, 2021 Author Share Posted January 14, 2021 Broken Pro. Thanks for that. it's what I thought but their method seemd a bit complicated. Have used cheap Jigs without too much success. Only tried to work on one leg at the moment and the vertical stop at the front is a bit loose on the bar. Shouldn't take too much sorting Phil Green. I have made up a vanessa jig and it has worked well on my latest medium weight model but was very difficult on my much heavier P51 to get set up and instal the model on my own Thanks for your replies. John Quote Link to comment Share on other sites More sharing options...
Bruce Collinson Posted February 22, 2021 Share Posted February 22, 2021 I use both. The Multiplex one is small and neat and I think the issue of how to “zero” the scale bars has been dealt with by Broken Prop. It seems slightly counter-intuitive but the trick is, from memory, make sure that the measurements are from the main balance/hinge point. A Vanessa is great but awful fiddly without a spacious man shed with a suitable fixing in the middle of the ceiling and a decent bench beneath. The Multiplex can be used on the kitchen table, landing etc. Something I found with the Vanessa was to buy a bike storage pulley from the Geordie Dating Agency (some of you know it better as Screwfix....Mods ... !) which makes the crucial lifting clear of the bench much easier, especially with a heavy plane. Hope this helps. BTC Quote Link to comment Share on other sites More sharing options...
conrad taggart Posted February 22, 2021 Share Posted February 22, 2021 Fairly good set of instructions here : https://www.rcgroups.com/forums/showthread.php?1537908-Multiplex-Center-of-Gravity-gauge CT Quote Link to comment Share on other sites More sharing options...
Steve Goodwin Posted February 23, 2021 Share Posted February 23, 2021 This is very good 1 Quote Link to comment Share on other sites More sharing options...
Phil McCavity Posted February 23, 2021 Share Posted February 23, 2021 I like that, it looks perfect for smaller span models. Quote Link to comment Share on other sites More sharing options...
Andy Stephenson Posted February 23, 2021 Share Posted February 23, 2021 (edited) One fellow club member tried to convince me you can't balance a plane upside-down, arguing was no use so gave up. Edited February 23, 2021 by Andy Stephenson Quote Link to comment Share on other sites More sharing options...
Steve Goodwin Posted February 23, 2021 Share Posted February 23, 2021 Thanks Phil, It will comfortably suit up to .60 size no problem. Quote Link to comment Share on other sites More sharing options...
gangster Posted February 23, 2021 Share Posted February 23, 2021 27 minutes ago, Andy Stephenson said: One fellow club member tried to convince me you can't balance a plane upside-down, arguing was no use so gave up. Best avoid flying inverted then 1 Quote Link to comment Share on other sites More sharing options...
Jeffrey Cottrell 2 Posted May 20, 2021 Share Posted May 20, 2021 On 23/02/2021 at 17:06, Steve Goodwin said: This is very good Hi Steve Don't know whether it's intentional, but they have faded out the makers name. Can you tell me where you got it from? thanks Keff Quote Link to comment Share on other sites More sharing options...
Redex Posted May 20, 2021 Share Posted May 20, 2021 I use the Great Planes C of G Balance says it can take upto 40 lbs Quote Link to comment Share on other sites More sharing options...
Steve Goodwin Posted July 20, 2021 Share Posted July 20, 2021 Hi Keff, sorry for the delay, it’s been a struggle! available here https://www.ebay.co.uk/itm/154359120639?hash=item23f08542ff:g:WncAAOSwMz1gQe6A Quote Link to comment Share on other sites More sharing options...
Steve Goodwin Posted July 20, 2021 Share Posted July 20, 2021 Here you will find out specs and dimensions www.jerryhanson.co.uk Quote Link to comment Share on other sites More sharing options...
Jeffrey Cottrell 2 Posted July 20, 2021 Share Posted July 20, 2021 Hi Steve, thanks. Bit of a wait, but well worth it. Got one on order. Cheers Jeff (sorry, not Keff. My bad) Quote Link to comment Share on other sites More sharing options...
Andy48 Posted July 20, 2021 Share Posted July 20, 2021 On 23/02/2021 at 17:20, Andy Stephenson said: One fellow club member tried to convince me you can't balance a plane upside-down, arguing was no use so gave up. I certainly can't, the blood rushes to my head, and my neck aches. 1 Quote Link to comment Share on other sites More sharing options...
Steve Goodwin Posted August 1, 2021 Share Posted August 1, 2021 On 20/07/2021 at 15:34, Jeffrey Cottrell 2 said: Hi Steve, thanks. Bit of a wait, but well worth it. Got one on order. Cheers Jeff (sorry, not Keff. My bad) Hi Jeff, How did you get on? Did you get one? Quote Link to comment Share on other sites More sharing options...
Jeffrey Cottrell 2 Posted August 1, 2021 Share Posted August 1, 2021 Hi Steve Yes, arrived a few days ago. Haven't tried it yet, but looks a pretty good piece of kit. Thanks for your help Jeff Quote Link to comment Share on other sites More sharing options...
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