Gerrit Posted February 21, 2013 Share Posted February 21, 2013 Hello All as promissed here is a preview of the gear reduction ( mounted on the first into the US delivered Kolm IL 135 !! 4 years 2 guys adicted to giant scale (warbirds) had a talk and this became a giant professional project 2013 will be the launch of our "dream" making geardrives for the scale modelbuilder for any big scale engine so here is what to come testsflights and data in Yellow aircraft P 40 MVVS 40 + GD Meister Scale P 47 MVVS 80 +GD Carf P51 + Kolm IL 135 Giant Stick full data testplane with different props ( Vogelsang, Seidel)+ ZDZ?DA, DLE, engines Launching website and oh yes we are planning a......planetary geardrive....!!!!! All coments and reactions are added value so stay tuned please Happy Landings Gerrit Quote Link to comment Share on other sites More sharing options...
Eamonn Fahey Posted February 21, 2013 Share Posted February 21, 2013 Really nice piece of engineering. Good luck with your project. Quote Link to comment Share on other sites More sharing options...
Gerrit Posted March 18, 2013 Author Share Posted March 18, 2013 Gents, Well as promissed here is film of our project. We are progressing firmly to the end next will be inflight testing and data. For info the reduction will be available for MVVS, Evolution,DA, ZDZ and KOLM Engines t**LINK** Stay tuned Gerrit Quote Link to comment Share on other sites More sharing options...
Gerrit Posted May 19, 2013 Author Share Posted May 19, 2013 Gents, The weather is getting good and the planes are ready. I am introducing the reductions in July on the market at the Oberhausen Warbirdmeeting 2013 engines are Kolm,MVVS,Evolution,DA,ZDZ Keep you posted Quote Link to comment Share on other sites More sharing options...
Gerrit Posted May 19, 2013 Author Share Posted May 19, 2013 Go and have a look at my pics I uploaded some pics of the warbird test planes Gerrit Quote Link to comment Share on other sites More sharing options...
Concorde Speedbird Posted May 19, 2013 Share Posted May 19, 2013 Brilliant! So will the P47 spin that prop? (Picture from your album) CS Quote Link to comment Share on other sites More sharing options...
Gerrit Posted May 19, 2013 Author Share Posted May 19, 2013 Yes!! We planned to use a Solo hub and blades but we dropped that plan and use other blades. It is also planned to use our own hub. I will post all info on the reduction and blades used, telemetrie etc after final test flying and by the launching to the public. All is in finishing stadium. Please stay tuned and thanks for the intrest!! Gerrit Quote Link to comment Share on other sites More sharing options...
kevin b Posted May 19, 2013 Share Posted May 19, 2013 WOW ! That is great. I bet it sounds wonderful. What's next, variable pitch prop perhaps ? kevinb. Quote Link to comment Share on other sites More sharing options...
Gerrit Posted May 20, 2013 Author Share Posted May 20, 2013 Hi all, Here a youtube link to my companion who makes it all happen his name is John Munson and lives in Washington State. You can see the P 40 flight and test run with gear reduction, and the Evolution on the test stand and our new test beast with the Kolm IL 135 with the Sep prop next we will use Seidel blades...stay tuned **LINK** Quote Link to comment Share on other sites More sharing options...
Concorde Speedbird Posted May 20, 2013 Share Posted May 20, 2013 If you could do a MKI Spitfire with a full three blade prop I'd be impressed! They are fantastic, great job! CS Quote Link to comment Share on other sites More sharing options...
John Olsen 1 Posted May 21, 2013 Share Posted May 21, 2013 Hi Gerrit, Have you done anything with shaft drives? I'm toying with the idea of one for the rear engine of an ESM Dornier 335. This has been done by a German kit manufacturer for a larger model of the same aircraft so it is possible. I'm looking for information on things like shaft couplings suitable for this sort of service but most of the outfits here are only used to industrial stuff, eg higher powers but much lower speeds. The shaft itself would need to be about 800 mm long, the engine would be a 120 four stroke. John Quote Link to comment Share on other sites More sharing options...
marco martens Posted May 26, 2013 Share Posted May 26, 2013 hi gerrit really nice work I sent you a private message have some questions about the gear reduction drive and would like to order 1 Quote Link to comment Share on other sites More sharing options...
Gerrit Posted August 14, 2013 Author Share Posted August 14, 2013 AND HERE IT IS ! REDUCTION FOR DA 60 and others : Since the last post and the flying season is in full we managed to put out and test the reduction for so many guys and their beautifull scale birds ! This allows you to swing a scale big prop and go away from the static props. Have a look pass it on and if you are interrested here you can put yr quieries ore send me a pm [email protected] **LINK** We hope you all have a great season enjoy your meetings and fly in's and wich you many happy landings!!!!!! Stay tuned !!!!! Gerrit Quote Link to comment Share on other sites More sharing options...
Gerrit Posted August 17, 2013 Author Share Posted August 17, 2013 Hi All, The work goes on and the building as well. here some pics of the DA 60 on the test stand and the Kolm 135 with gear in the comp arf P 51 and you have the test of the Kolm 135 with reduction **LINK** Q&A? just send me a mail, and by the way if you want one ( gear reduction that is..) just drop me a line Stay tuned and enjoy Gerrit Quote Link to comment Share on other sites More sharing options...
Concorde Speedbird Posted August 17, 2013 Share Posted August 17, 2013 That is superb! I would like to see a video of that Mustang when it flies, this is a brilliant idea. CS Quote Link to comment Share on other sites More sharing options...
Gerrit Posted October 6, 2013 Author Share Posted October 6, 2013 Hi All, as promissed we keep you posted So here it goes our reductions went on teststands and are fantastic: Here is the list of engines for now Kolm 65-100-135 ZDZ 80-90 DA 60 and later on 80 MVVS-Evolution 46 80 We also produce custom build the reductions went all up in the air ....last engine was the ZDZ 80 unfortunately a transmitter brown out caused fatal crash of the giant Extra airframe and electronics....to our big estonishement after a cleanup of the engine and reduction and a new prop we put it on the teststand and it opperated flowlessly without any mechanical ore other intervention. Note the motor and gear were literally buried into the soil. A new system Jeti DS 16 is on the way together wit all the electronics and telemetry the non reliable JR sytem was sold and all the electronic stuff was made redundant and is of now on a past. So here a film of the ZDZ 90 after cleaning and restart on the teststand . Quote Link to comment Share on other sites More sharing options...
Gerrit Posted October 6, 2013 Author Share Posted October 6, 2013 Sorry here is the film **LINK** If anyone needs a reduction or has Questions just drop me a line [email protected] we ship overseas !! Wish you all happy landings and a good building season!! Next news will be from The Sinnesheim Show in Friederichshafen Germany were I will introduce the reduction and visit my friends Hans Kolm( engines) and Mario Seidel (scale props and planetairy reduction for Moki 250) ( please vitit their sites) Stay tuned Gerrit Quote Link to comment Share on other sites More sharing options...
Gerrit Posted October 7, 2013 Author Share Posted October 7, 2013 Quote Link to comment Share on other sites More sharing options...
Gerrit Posted December 9, 2013 Author Share Posted December 9, 2013 Hello Gents, Latest News: We started the firm JGM DESIGNS ( home base is Seatle USA/Boeing Country we will be machining ultra fine small parts for avaiation and automotive and RC. Europe OPS is yours truly home base Belgium We now made and produce reductions ( custom made as wel) for following engine range: All kolm single and IL engines ( also the 200 and...) ZDZ 80 - 90 MVVS_Evolution all single engines as from 45CC DA 60 80 more to come Variable pitch is in motion status...first plans As of now all test results in flight are monitored by Jeti DS 16 RX full range of telemetry Carf P 51 ducting is completed and 135 is installed slick and smooth fit!! Ducting and reduction will be available as a complete set for the Kolm and Carf P 51 We build a reduction for the KOLM 150 IL 3 cyl ( working is perfect) going to Norway...will be for a Me 109 with a 34 scale 3 blade prop ( just awesome) We recommend Seidel Props and blades ,( just have look on his side...concerning reductions ( Mario Seidel builded a planetairy reduction for the Moki Radial= available now) So any Q & A please mail me Just visit the above links; we have the website now in testing mode and are waiting for aditional flight info ( good weather conditions) and we launch Thanks for watching and stay tuned Gerrit JGM Designs Europe Ops Quote Link to comment Share on other sites More sharing options...
kenneth wikeroey Posted January 18, 2014 Share Posted January 18, 2014 Here is my JGM drive and a ZDZ 90 mounted in a Meister Scale Platinum scale 1/4 Bf-109; http://www.modellflynytt.no/showthread.php/31370-Meister-Scale-Platinum-%28McCurry%29-Bf-109/page23 Quote Link to comment Share on other sites More sharing options...
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