RE: Pirotti Tuono
I was at the factory visiting with Mauro Piroti in October, I have to tell you , it was an awesome visit, Mauro is a great guy, with many ideas in his brain. You can bet more good stuff will come out of this factory... Roger
Posted on: 12/9/2010 6:17 AM by Author "Forgues Research" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10185954

RE: DA 120 weight
[quote]ORIGINAL: Zeeb [quote]ORIGINAL: Forgues Research [quote]ORIGINAL: JoeAirPort 4 lb 15.4 oz [/quote] Thanks but is this including the ignition module , spark plugs, prop mounting bolts.... Thank you Roger [/quote] Ahh... Roger.... I told you in my first post that it didn't have the ignition module.... If you look at the pic you can see that the sparkplugs, prop mounting bolts
Posted on: 11/14/2010 10:08 PM by Author "Forgues Research" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10135615

RE: DA 120 weight
[quote]ORIGINAL: JoeAirPort 4 lb 15.4 oz [/quote] Thanks but is this including the ignition module , spark plugs, prop mounting bolts.... Thank you Roger
Posted on: 11/14/2010 1:53 PM by Author "Forgues Research" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10134746

RE: DA 120 weight
[quote]ORIGINAL: Zeeb Didn't bother to weigh it with the ignition and I imagine that is weight is available or you may have one to weigh???? Oh, this is with the aluminum cylinder head bolts which have been replaced with the steel bolts so it'll be just a tiny bit more with those installed.... ;) [/quote] Thank you , but I'm not sure if I am reading correctly, I see 415.4 ouces, which of course is impossible, can you tell what is written... Roger
Posted on: 11/14/2010 12:22 PM by Author "Forgues Research" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10134595

DA 120 weight
I have a question, can anyone tell me the real weight of the DA 120 with ignition, spark plug, prop bolts etc. I would appreciate any data to be as precise as possible and as unbiased as possible... Roger
Posted on: 11/14/2010 12:33 AM by Author "Forgues Research" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10133960

RE: Great Planes Extra 330L
I sold mine a few years ago and I regret selling it to this day..... Roger
Posted on: 9/19/2010 8:32 AM by Author "Forgues Research" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=10012277

RE: What are boost tabs???
[quote]ORIGINAL: wobblewobble I did everything that was called for to make the boost tab work right and it failed.   [/quote] which part of the setup failed , if installed properly, they are bullet proof..can you post a picture of your setup... Roger
Posted on: 8/23/2010 4:03 PM by Author "Forgues Research" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=9954616

RE: FiberClassics P-51 now Comp-ARF P-51
[quote]ORIGINAL: mustangrosen rdefrei2: RR258:  The engines are available (planned) in October -Novenber www.heger-technik.de 4 Blade - only with beltdrive! Do you seen that : http://www.youtube.com/watch?v=dvnnaZnkbbw&feature=channel http://www.youtube.com/watch?v=doAQDPEjUFs&feature=channel scale Props for Me109 (31x28'') and FW 190 D 9   (for the good old german stuff)  really    g r e a t! the pictures show:  the ME 109  3 Blade VDM scale Prop and, as motivation for Canuck1 -  my P51 ....  idling.....  :-) [/quote] This is amazing , thanks for posting ... Roger
Posted on: 8/21/2010 9:09 AM by Author "Forgues Research" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=9949340

RE: What are boost tabs???
[quote]ORIGINAL: wobblewobble  i was using a 75oz servo...  [/quote] was this servo operating the elevator or the boost tab, ??? If the boost tab, it is quite big for the job, as an insight, on my 35% Yak 54, I installed a small hitec 81 servo directly controlling the boost tab on the rudder. The rudder itself was free floating. On the ground for rudder/tail wheel operation, I would need a blip on the throttle to get some air but it worked beautifully. In the air it worked very powerfully, did some very nice Knife Edge. There was one problem though, since the Rudder also had an aerodynamic balance on the top of the rudder, in straight flight it would tend to oscillate. What I needed to do was install dampers on the rudder itself.. A properly installed boost tab on a control surface, using only a 25 oz servo controlling the boost tab, gives the control surface as much as 5000 oz of torque. So, it would be nice to see how every thing was installed.... Roger
Posted on: 8/14/2010 8:19 PM by Author "Forgues Research" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=9933783

RE: What are boost tabs???
[quote]ORIGINAL: wobblewobble  My small hitec servo failed on the boost tab and that is all I had powering my big elevators!  [/quote] That will do it, the reason for not going too small on servos, is not for the flight loads but rather because of vibrations, also if you do go small on the servo, make sure you mass balance the control surface properly. On my 34% Turbo prop laser, I am using only one 75 oz. nylon gear servo per control surface. Two years now. Roger
Posted on: 8/14/2010 1:17 PM by Author "Forgues Research" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=9933044

RE: What are boost tabs???
[quote]ORIGINAL: wobblewobble  boost tabs crashed my plane. beware!!!! [/quote] Boost tabs are very safe, if your airplane crashed because of the boost tabs, they weren't installed properly. Been using them for more then 20 years, never a problem ... Roger
Posted on: 8/13/2010 9:22 AM by Author "Forgues Research" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=9930543

RE: wren supersport
[quote]ORIGINAL: Xairflyer [quote]ORIGINAL: Forgues Research [quote]ORIGINAL: Xairflyer What are you using as an ignition for the spark plug? [/quote] I use a regular ignition module but without the auto advance and make it fire continuously with a timer I made . As I said I now have them made with everything built in Roger [/quote] Are they available to buy? PM if you are not happy to post here
Posted on: 7/5/2010 7:01 PM by Author "Forgues Research" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9846450

RE: wren supersport
[quote]ORIGINAL: Xairflyer What are you using as an ignition for the spark plug? [/quote] I use a regular ignition module but without the auto advance and make it fire continuously with a timer I made . As I said I now have them made with everything built in Roger
Posted on: 7/5/2010 4:43 PM by Author "Forgues Research" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9846197

RE: wren supersport
[quote]ORIGINAL: Xairflyer [quote]ORIGINAL: Forgues Research The other problem he mentions with glow plug, well I have solved this problem forever with a spark ignition I developped , works flawlessly... for what its worth. Roger [/quote] Tell me more ? something myself and a friend was talking about only recently [/quote] I replace the glow plug with the same size spark plug, put a resistor (30
Posted on: 7/5/2010 4:03 PM by Author "Forgues Research" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9846129

RE: wren supersport
[quote]ORIGINAL: HarryC Don't know if the info is of any help at all, may just be spurious coincidence, but these people were having Jetcat problems in some versions of the Boomer http://jmajets.co.uk/board/viewtopic.php?f=3&t=1778 [/quote] The other problem he mentions with glow plug, well I have solved this problem forever with a spark ignition I developped , works flawlessly... for what its worth. Roger
Posted on: 7/5/2010 12:16 PM by Author "Forgues Research" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9845754

RE: wren supersport
[quote]ORIGINAL: paulflys4fun As Ron has said futher trail where done today and videoed, and if i every get a clever pill i will post them. We are getting there, but we are still only getting the turbine to spool up slowly, but running it is. Wren have bent over backwards to help Jim, and we are looking to reinstall the SS and contiue testing. I promise we will keep you informed. New2jets I am glad the info i provided was of at least some use. Please contact Wren again and let them know what it is doing. I honestly belive your problem is fixable and Wren will fully support you. If you still have no look, Jim, Ron and i will contuine to work on our problem, which i am sure will inturn help you. Regards Paul [/quote] Paul, I apologize for not being able to upload the photos you sent me, I have no idea what is holding this back as I have posted numerous photos in the past , and have done exactly the as before, but for some reason, it won't let me telling me "missing required field". If anyone know what is missing , please do tell... Roger
Posted on: 6/30/2010 5:52 PM by Author "Forgues Research" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9836978

RE: wren supersport
I received the photos from paulflys4fun to post for him, and although I have posted numerous photos in the past on RCU, this time it won't let me telling , missing field.. I have tried 5 times so far, rebooted my computer and no cigars. sorry... Roger
Posted on: 6/29/2010 2:08 PM by Author "Forgues Research" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9834357

RE: wren supersport
I would be happy to post them for you if you wish forgues@forgues-research.com Roger
Posted on: 6/29/2010 12:39 PM by Author "Forgues Research" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9834174

RE: wren supersport
[quote]ORIGINAL: paulflys4fun Hi H The magnet idea was good, but i just checked and no there is no way that is the problem. As for restrictions we even took the tank out, so the airframe was clear right through, but still no change. The inlet for air is both along side the tank and a second inlet next to the turbine. As i have already said we cut two 1'' holes just above the front on the turbine in the hatch. This again did not help, but did give us a clear veiw of the turbine, and no obstuction was noted. Your thoughts on the amount of air is noted, because as i have already said, the intro only has two very small intakes, and was blocked with very fine mesh and the turbine worked just fine in that. Jim is going out with three more things to try today. First, Make a disk to go around the turbine to fit tight on the turbine and an outside dia 20mm bigger than the turbine. This is to make the turbine similar in size to a p80. Second, make and fit a baffle just after the compresser the same shape as the airframe, but leave a 15mm gap around the turbine. Third, Block of the front intakes, and make the intakes the same as they where in the intro. We will report back hopfully tonight. Regards Paul [/quote] For what its worth, I have had issues with the ECU , not because of magnets, but because the battery power wires were too close to the ECU, rerouted and problem solved , of course not this problem. Roger
Posted on: 6/29/2010 9:00 AM by Author "Forgues Research" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9833791

RE: wren supersport
[quote]ORIGINAL: siclick33 The problem with diagnosing other peoples faults over the internet is that there a variety of problems that can cause similar issues. Making alterations to idle and Accel/Decel values may mask problems rather than solving them. There is mention of engines going back to Wren several times but no information on what was done. As such we only have half of the story which isn't really very fair on Wren. Are they getting these engines to work correctly? If so, is there any difference in the way the engines are being installed/run? If there is a recurring problem I am sure they would been keen to sort it out. I can understand the reasons for them not wanting to post on an internet forum (probably the same reason you don't see Bob Violett here). As for the service since Sara's departure, I have had no problems. In fact I popped into their office a little while back and they couldn't have been more helpful. [/quote] I agree in part but everytime you have a small glitch, you can't send the engine back, you need to learn about these engines otherwise you will never fly. What I have done might mask the problem , if so, the problem will re surface I'm sure. After reading some posts here I find a lot of people will do just that, send the engine back with the very first glitch, there goes the flying season. Last year I sent back a turbo prop wren 44 for a gear box problem, well I lost my flying season, that's how long it took to get it back..... Just my two cents Roger
Posted on: 6/18/2010 8:50 AM by Author "Forgues Research" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9811016

RE: wren supersport
For what its worth , I have done a bit of experimenting to solve the problem which is very similar to what others are experiencing here. What I have found, the idle is too low on mine that is, and by advancing the a bit higher, the gurgling of extra fuel seems to all but gone.. Of course I will have to see if it works well in the week end at the flying field. Roger
Posted on: 6/17/2010 6:20 PM by Author "Forgues Research" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9809871

RE: Problem with throttle
[quote]ORIGINAL: i3dm Roger my friend, Definitely sounds like too much fuel going in. im just wondering what has changed.. Do you have access to the ramping values ? these could be changed to slow the ramp down, at least for a test. I would consult Wren either way, i hear their support is good. [/quote] Hey buddy, Yes I have access and this is what I will do next I had the same problem with the 44 and it solved the problem but so far this has not , so I will try a bit more. Roger
Posted on: 6/16/2010 6:09 PM by Author "Forgues Research" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9807555

RE: wren supersport
[quote]ORIGINAL: box55555 Have you guys seen the thread ''problems with the throttle''. Know its a turbo prop motor, but seems a similar problem. [/quote] Ya that's me with the Turbo prop wren 54 with the same problem Roger
Posted on: 6/16/2010 5:53 PM by Author "Forgues Research" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9807532

RE: Problem with throttle
Thanks for the reply so far, it has never been in a crash and gear box seems to be running OK. I have worked to the ramp up but still have too much fuel it would seem , also in flight, lets say I'm at half throttle, and power up, I can hear like a rumbling noise of afterburner , which I don't have LOL... and it clears... Roger
Posted on: 6/16/2010 4:26 PM by Author "Forgues Research" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9807352

Problem with throttle
Hello all, I am running a Wren 54 turbo prop engine, But recently I have a problem with the Throttle. Nothing has changed in any of the settings but now after I start the engine, idling, when I move the throttle just a bit, I get this loud jet noise like there is too much fuel. also advancing more, it flames out. Could it be the fuel pump not working properly, ???? Thanks for any help. Roger
Posted on: 6/16/2010 11:21 AM by Author "Forgues Research" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9806761

RE: Carbonfiber byron mustang blades
[quote]ORIGINAL: JoeEagle Just updated the website. I think I have covered the issues raised to me in multiple personal emails. Pass it on to the rest. FWIW, last month there were 1400 individual visits to the website. pretty amazing to me for something this old. i hope that someone contiues to develp a prop. i'll buy two. joe [/quote] Hey Joe, I am developing a constant speed prop, I need advice. Roger
Posted on: 5/24/2010 8:58 AM by Author "Forgues Research" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=9755401

RE: comp arf, Eurosport
[quote]ORIGINAL: Carsten Groen Roger, I did a build thread on our Danish Jet forum, although it's in Danish, the pictures are universal [:D]: (I have since fitted Digitech's trailing link oleo's (ProLynx) to it (works perfect!) http://www.jetdanmark.dk/e107_plugins/forum/forum_viewtopic.php?182 [/quote] Your right Pictures are the international language. Great thanks very much. Roger
Posted on: 4/15/2010 8:09 AM by Author "Forgues Research" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9662217

RE: comp arf, Eurosport
[quote]ORIGINAL: invertmast [quote]ORIGINAL: Forgues Research [quote]ORIGINAL: invertmast With the Evolution version, the fin is left removable and the fin spar is glued into the FUSELAGE, not the fin. The instructions included with the Euro are for older version with the non-removable vertical tail and ''big'' hatch on the bottom. I've got photo's of the euro
Posted on: 4/14/2010 11:16 PM by Author "Forgues Research" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9661754

RE: comp arf, Eurosport
[quote]ORIGINAL: fast_bro I just did this step today on my new Evolution version. As Invertmast said the carbon rod glued into the Fuse. Then is just slides on and bolts in the front. I had to trim a little off the carbon rod as it was about half and inch to long. I did leave it 2mm long as the instructions say to make it tighten up as the hold down screw is put in. On my old original version the fin is not removeable it is glued completely. Hope this helps. [/quote] Yes most deffinately it helps , thanks, I appreciate it. Roger
Posted on: 4/14/2010 11:14 PM by Author "Forgues Research" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9661749

RE: comp arf, Eurosport
[quote]ORIGINAL: invertmast With the Evolution version, the fin is left removable and the fin spar is glued into the FUSELAGE, not the fin. The instructions included with the Euro are for older version with the non-removable vertical tail and ''big'' hatch on the bottom. I've got photo's of the euro i built this time last year if you would like for me to post them up, or if you have any questions, feel free to ask. [/quote] Yes please I would love to see them and show more about the fin area Roger
Posted on: 4/14/2010 9:42 PM by Author "Forgues Research" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9661509