RE: New L-39 Savex with Wren 44 Gold
Flew mine on a Gold 2 years ago, awsome model/ turbine combination. For the new L39 / 44 converts, all you need to know is here [link=http://www.rcuniverse.com/forum/m_1396336/mpage_1/key_/tm.htm]Big thread[/link] Paul
Posted on: 10/21/2009 3:53 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9191330

RE: Bickley jets 2010 - not happening
Sad news, one of the best meetings of the year.[&o] Paul
Posted on: 10/16/2009 2:13 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9178269

RE: XPS 2.4 Module ??
XPS.....no...[X(] I have almost 3 years on FASST now, not one lock out or loss of signal. My 2C worth. Paul
Posted on: 10/15/2009 4:15 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9175913

RE: Experience with Jetcat Turboprop
I do not own a turboprop but I know 2 people who do. The Wren one seems to work perfectly. The Jet cat one had many problems including seizing and parts vacating the engine. Paul
Posted on: 10/14/2009 4:08 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9173169

RE: **Wren Turbines USA Open house**
Have a safe trip Mike. Have a great day all [8D] Paul G
Posted on: 10/8/2009 3:24 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9156774

RE: C-ARF Spark: MW44 or P60?
Wren 44 gold is the way to go. Great combo. light and fast
Posted on: 10/7/2009 10:12 AM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9153591

RE: Chalgrove October JetFest
Fireblade Yep, they are very good, no problems at all, i would recommend them to anyone, great value and easy to set up. Paul
Posted on: 10/5/2009 1:56 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9148496

RE: Chalgrove October JetFest
happy daYS P AND J
Posted on: 10/4/2009 5:35 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9146253

RE: Chalgrove October JetFest
Nice[:D][:D][:D]
Posted on: 10/4/2009 3:23 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9146008

RE: Chalgrove October JetFest
Dave What a great day indead! Thanks for the fantastic shots of my Fox Hawk, awsome! (told you the nav lights would show up [;)] Great day, role on the next one. Paul G
Posted on: 10/4/2009 3:05 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9145981

RE: wren 44 blade failure
Any turbine can fail, as can any piece of mechanics or electronics from any manufacturer. Even Rolls Royce have failure! I have to say that a 44 turbine blade failure is new to me, as Jason said, "you are very special". One thing is for sure, Wren will sort out the problem for you, on that (IMHO) they are the best. Paul G
Posted on: 9/27/2009 4:30 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9127785

RE: FOX COMPOSITES Bae HAWK, Build thread
Been very busy with shows and family. I will give details on the nav lights soon but here is a pic taken at the Hop Farm(Southern Model Airshow) last weekend. The nav lighs show up really well[:D] Paul
Posted on: 9/21/2009 2:24 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9112604

RE: FOX COMPOSITES Bae HAWK, Build thread
Yep, the pilot is the £17.00 one from Argos! Paul
Posted on: 9/8/2009 6:37 AM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9078153

RE: FOX COMPOSITES Bae HAWK, Build thread
3DFlip Have you flown her yet? Paul
Posted on: 9/7/2009 5:04 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9076665

RE: FOX COMPOSITES Bae HAWK, Build thread
Quick post. Nice picture taken by Dave Wiltshire from Motors and Rotors. My Hawk on landing run in. Shows clearly the new legs i have now fitted. They work really well, also the nav lights can be seen, more details on these when i get a moment. Paul
Posted on: 9/7/2009 4:14 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9076555

RE: Chalgrove September Jet Fest
R A Red Arrows....dur [sm=red_smile.gif]
Posted on: 9/6/2009 4:17 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9074125

RE: Chalgrove September Jet Fest
Great day Dave, we were so lucky with the weather. I enjoyed our bit of formation flying [8D] Hope someone got some pics of that close pass [:D] By the way, what is an RA Hawk? My Fox comp Hawk is flying sooooo well, love it. [sm=shades_smile.gif] Like the picture you took of me, glad to see i still have my 'racing snake' figure[sm=75_75.gif] Roll on next month.[sm=thumbs_up.gif] Paul G
Posted on: 9/6/2009 4:07 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9074114

RE: L39/Wren 44 Pics and video
Roughen up and epoxy. Paul
Posted on: 9/6/2009 2:06 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9073902

RE: L39/Wren 44 Pics and video
Hi Yes i believe it is, long time since i built one but pretty sure. Paul
Posted on: 9/5/2009 3:38 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9071942

RE: Do you trust FESTO for fueling?
[quote]ORIGINAL: KC36330 [quote]ORIGINAL: ianober Festos work fine for the positive pressure side of the fuel system, I do not use them on the negative pressure side (suction). [/quote] unless the negative pressure is enough to collapse the tubing the O-ring seals the same regardless of positive or negative pressure. I've used them on my vacuum system with the poly ice maker tubing and never had a leak but i don't know that I'd trust one to not leak with soft Tygon tubing.... i think you'll find the leak comes from the check valve portion of the Festo fitting when used in the application the OP has intended. [/quote] Festo and all other type of o-ring seal fittings are not designed to work under vacuum. The seal, being an o ring, requires positive pressure to 'energise' and function as a seal, negative pressure will allow air past once the surface contact of the o ring against the pipe is overcome. I have seen these fittings leak back on many occasions, not just in models but many applications. (Part of what i do for a living is design pneumatic circuits) Bi-directional seals can be designed but as these are compressed air fittings they are not designed to work that way. I agree that low negative pressure may not produce a leak but this is not by design and cannot be relied on. I would have absolutely no issues using them anywhere on the positive side of the pump but nowhere else. Paul
Posted on: 8/19/2009 4:16 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9028742

RE: Do you trust FESTO for fueling?
[quote]ORIGINAL: ianober Festos work fine for the positive pressure side of the fuel system, I do not use them on the negative pressure side (suction). [/quote] ditto. Paul
Posted on: 8/19/2009 1:16 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9028344

RE: Wren Turbines Open Day
Another masterpiece from Wren [sm=shades_smile.gif] Simply the best [sm=thumbs_up.gif] Well done guys. Paul
Posted on: 8/16/2009 1:53 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9020440

RE: 2.4 GHz Weatronics, PPM or PCM?
No problem. Paul
Posted on: 8/16/2009 12:45 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9020330

RE: 2.4 GHz Weatronics, PPM or PCM?
Here is one i would not do, but a friend has, it works perfectly and has been for around 2 years. One of them is taped to the UAT. Paul
Posted on: 8/16/2009 3:37 AM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9019736

RE: 2.4 GHz Weatronics, PPM or PCM?
[quote]ORIGINAL: Robrow Would be interesting to see any other 2.4 antenna installs. Rob. [/quote] Robrow. All of the installs below have been used and fully flight tested using FASST, i see no reason why they would not do just as well with Wea. The last one has 1 antenna inside the pilots head, the other runs along the base. Zero issues with any of them, in over 2 years flying. Paul
Posted on: 8/16/2009 3:30 AM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9019731

RE: Scampton 22nd & 23 August
Jo and I will be visiting Sat and Sun! Lets hope thw weather is kind [>:] Paul
Posted on: 8/16/2009 3:09 AM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9019714

RE: 2.4 GHz Weatronics, PPM or PCM?
[quote]ORIGINAL: Gandalv Maybe of topic and maybe a dumb question, but here goes If there is about 1meter from the turbine to the mounting place of the receiver, it seems that the blindspot/shadow behind the turbine for the receiver is about 1m at a distance of 5meter behind the plane (and I guess this shadow will be increasing further back?). Wouldn't longer antennas be better to help out the shadowing or is this not a problem in real flight ? Thanks. Regards from Gandalv [/quote] On the FASST system and also it appears the W’tronics system, no issue is found, refer to my testing thread you will see that is the case. Paul
Posted on: 8/14/2009 8:14 AM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9015522

RE: 2.4 GHz Weatronics, PPM or PCM?
[quote]ORIGINAL: sidgates David Gladwin- If you have any comments I would like to hear from you. Do you have your antennas inside a fiberglass fuselage on your jets? I am open to any other suggestions you might have. [/quote] Sidgates From my experience helping David and also of FASST which uses the same type of aerials on the rx, there is absolutely no issues with Fibreglass fuselages. David. I have done extensive tests on the ground with carbon fibre on the FASST system and have to say I can detected no appreciable performance issues. I know Spektrum has issues in this area. To be fair I have not flight tested in a full carbon fuselage my tests were in the L39 which is Carbon from the intakes rearward. With the rx up front, from rear aspect the aerials do not have a clear view of the tx, 2 layers of carbon and the tailpipe are in the way. I experienced zero issues with this install. My early ground tests (see the thread) involved placing the RX inside the tailpipe which was inside the carbon fuselage, all was well! As the Weat has the same aerial setup is may function as well as FASST in this environment. It would be an interesting test for you/me to do, perhaps at Scampton?? Paul
Posted on: 8/13/2009 8:18 AM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9012823

RE: Wren Turbines Open Day
[quote]ORIGINAL: WrenTurbines [quote]ORIGINAL: ThomasP There may even be cakes for the chosen few[:D] Regards, Alistair [/quote] There will be enough cakes for everybody - we always bake too many! Sara Parish Wren Turbines [/quote] You can never bake too may cakes![;)]
Posted on: 8/12/2009 8:04 AM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9009947

RE: Hitler's Stealth fighter (Horten Ho229)
Was already marked..
Posted on: 8/3/2009 4:13 PM by Author "GrayUK" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8986787