cymaz Posted November 29, 2018 Share Posted November 29, 2018 I'm going to build a new engine test stand over the weekend. Well, it’s not flying weather... So, any good ideas and tips out there? Please show me yours Quote Link to comment Share on other sites More sharing options...
jeff2wings Posted November 29, 2018 Share Posted November 29, 2018 Well I made one and started on another one recently for up too 25 cc and this one will take up too 100 cc Quote Link to comment Share on other sites More sharing options...
trebor Posted November 29, 2018 Share Posted November 29, 2018 Renovation of an old one but I got a bit carried away, its got a tensioned throttle leaver fully adjustable for carbs on either side. Polished mahogany base Quote Link to comment Share on other sites More sharing options...
cymaz Posted November 29, 2018 Author Share Posted November 29, 2018 Like it Trebor Quote Link to comment Share on other sites More sharing options...
trebor Posted November 29, 2018 Share Posted November 29, 2018 Its nice just to have an engine mounted for looking at on the windowsill far better than her plant pots and pictures. Quote Link to comment Share on other sites More sharing options...
cymaz Posted November 29, 2018 Author Share Posted November 29, 2018 I was thinking of something like this......or a bit more elaborate. Quote Link to comment Share on other sites More sharing options...
cymaz Posted December 2, 2018 Author Share Posted December 2, 2018 Well after some head scratching, came up with this. The wood was an “ discarded offcut “ from work. This was the old one... Well past its best.... This is the unfinished new one. Hidden servo/ Rx box, away from oily residue... The rest of it...the hole in the top is for a 6oz Dubro tank Just the servo bracket ( s) to mount. Edited By cymaz on 02/12/2018 17:10:29 Quote Link to comment Share on other sites More sharing options...
Doug Campbell Posted December 4, 2018 Share Posted December 4, 2018 Perhaps Santa will bring you a square. Quote Link to comment Share on other sites More sharing options...
Engine Doctor Posted December 4, 2018 Share Posted December 4, 2018 Re test stands for beam mounted engines . Make sure you include when building or buy one with a positive stop in front of the engine mounts . The second pic with the laser looks like it will allow engine to slide out if it vibrates loose !!! Edited By Engine Doctor on 04/12/2018 11:04:42 Quote Link to comment Share on other sites More sharing options...
Former Member Posted December 4, 2018 Share Posted December 4, 2018 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
trebor Posted December 4, 2018 Share Posted December 4, 2018 Here we go again Quote Link to comment Share on other sites More sharing options...
John Stainforth Posted December 4, 2018 Share Posted December 4, 2018 It is important that the stand itself is well anchored. The engine thrust can easily pull a stand over, so it needs to be tied or held down. I mount my engine stands on a B&D workmate, which is barely up to the task. Quote Link to comment Share on other sites More sharing options...
cymaz Posted December 4, 2018 Author Share Posted December 4, 2018 Gentlemen please.....it’s a work in progress picture. Believe you me...if this stand ever breaks apart when bolted to my work bench , the end of the damn house will go with it ..... It’s a test stand not a work of art. I admit the top shelf ( WHICH IS NOW GLUED AND SCREWED) is only out of whack because the 45* bevel is not exact. Jobs tonight are, cut the bolts to length that secure the metal adjustable mount Drill some hole on the work bench to secure it with 2 ( two ) m10 coach bolts. Pictures to follow.....nearly done. Quote Link to comment Share on other sites More sharing options...
Martin Harris - Moderator Posted December 4, 2018 Share Posted December 4, 2018 Posted by Engine Doctor on 04/12/2018 11:03:54: Re test stands for beam mounted engines . Make sure you include when building or buy one with a positive stop in front of the engine mounts . The second pic with the laser looks like it will allow engine to slide out if it vibrates loose !!! Edited By Engine Doctor on 04/12/2018 11:04:42 My thoughts exactly when, around '76, I drilled a couple of holes for some locating stops in my Davies Charlton test stand - well I was using it to run in my (then!) fearsome OPS 60... I'm pleased to report that the engine stayed in place for the exercise despite it being twice the size the stand was designed for! ...and now I'm my club's safety officer - poacher turned gamekeeper? Quote Link to comment Share on other sites More sharing options...
cymaz Posted December 4, 2018 Author Share Posted December 4, 2018 Progress I am thinking of a set of 4 holes in the servo mount and about 5 pairs of holes and blind nuts across the base, that should give enough options for mounting the throttle Quote Link to comment Share on other sites More sharing options...
Bruce Collinson Posted December 4, 2018 Share Posted December 4, 2018 Here I am again. I once started an engine bolted to the same test stand as yours, screwed to my workbench, and being run in I redecorated that end of the outside man cave with oil. Wotcher doin bout dat den? Does it point to the outer regions of Cornwall? BTC Quote Link to comment Share on other sites More sharing options...
Fatscoleymo Posted December 4, 2018 Share Posted December 4, 2018 For throttle I just use a bit of piano wire suitably bent with clevis or z bend on the throttle end, and fed through rubber bands around the tank...easily tweaked for different engines. Bands hold it firmly enough. Seems like a lot of trouble to mount servo, then rx. then battery, then switch..and then you need tx.. A servo tester would be simpler if you wanted to use a servo.. Quote Link to comment Share on other sites More sharing options...
Engine Doctor Posted December 4, 2018 Share Posted December 4, 2018 Posted by Martin Harris on 04/12/2018 17:50:46: Posted by Engine Doctor on 04/12/2018 11:03:54: Re test stands for beam mounted engines . Make sure you include when building or buy one with a positive stop in front of the engine mounts . The second pic with the laser looks like it will allow engine to slide out if it vibrates loose !!! Edited By Engine Doctor on 04/12/2018 11:04:42 My thoughts exactly when, around '76, I drilled a couple of holes for some locating stops in my Davies Charlton test stand - well I was using it to run in my (then!) fearsome OPS 60... I'm pleased to report that the engine stayed in place for the exercise despite it being twice the size the stand was designed for! ...and now I'm my club's safety officer - poacher turned gamekeeper? The DC was a great asset back then. I still use one for small diesels but bigger engines would be a bit dodgy . The best game keepers are reformed poachers . They know the tricks and were lucky in their day Quote Link to comment Share on other sites More sharing options...
cymaz Posted December 4, 2018 Author Share Posted December 4, 2018 Posted by Fatscoleymo on 04/12/2018 19:00:58: For throttle I just use a bit of piano wire suitably bent with clevis or z bend on the throttle end, and fed through rubber bands around the tank...easily tweaked for different engines. Bands hold it firmly enough. Seems like a lot of trouble to mount servo, then rx. then battery, then switch..and then you need tx.. A servo tester would be simpler if you wanted to use a servo.. I feel safer just standing back, I really do. It’s an old Rx that I wouldn’t use in a plane, the switch has been mended with new solder plugs and a spare old batter. So no expense. Everything is what I had spare or would not use in flying. The wood was given. Glue and screws...well everyone has them. Edited By cymaz on 04/12/2018 19:32:37 Quote Link to comment Share on other sites More sharing options...
cymaz Posted December 9, 2018 Author Share Posted December 9, 2018 Had it’s first run today. Worked a treat, Quote Link to comment Share on other sites More sharing options...
Former Member Posted December 9, 2018 Share Posted December 9, 2018 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 22, 2019 Share Posted January 22, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
cymaz Posted January 22, 2019 Author Share Posted January 22, 2019 Clever design that...lots of adjustments Quote Link to comment Share on other sites More sharing options...
thomas oliver 1 Posted January 24, 2019 Share Posted January 24, 2019 I made one of these stands from alloy and found it tricky to adjust. I counterbored the 4 lower holes, drilled and tapped them a bit deeper and fitted slightly longer Allen screws. The counterbores allowed the fitting of two coil springs which stabilised the assembly and made adjustment much easier. . Quote Link to comment Share on other sites More sharing options...
thomas oliver 1 Posted January 24, 2019 Share Posted January 24, 2019 Sorry - 4 springs. Quote Link to comment Share on other sites More sharing options...
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