RE: Norvel .074 on a tuned pipe
Not sure this is Relevant or merely a Rant :-) Years ago (early/mid 70's) in my misspent youth I fielded factory race bikes for Yamaha. Genuine world beaters back then :-) Rebuilt, modified and redesigned a 'few' Exp chambers in process.. Still remember a bit about them. These were invented as Sonic devices. Material resonance is Critical ! Ali and Carbon fibre are erm Useless at that. Ever seen any musical instruments of either material? Also Millimeters were critical.There is NO 'good enough' .. it's either Exact or Crap. Chamber design involves long PITA calculations and/ or a V pricey Program and still depends on Micrometer measurements Toy airplane fitments are IMO a sad joke. They ONLY look like chambers. Yet some dullards persist in paying large for looks alone. PT Barnum would be proud. A tested/developed /tuned length of ...straight ex tube ...will work 'at least ' as well .. true. Don't Believe? spend the few weeks testing and reinventing the wheel firsthand As an oddity factoid ; only recently was I made aware (had eyes opened) that toy 2 strokes were actually Orders of Magnitude.. less.. sophisticated and powerful than even "street' 2 stroke engines... cc vs cc despite the total lack of nitro in the gasoline fueled moto versions to add insult to injury. I had always assumed the reverse .. In complete error. Pretty well a moot point given that only a few serious 2 stroke Bike engines currently exist especially so with the recent demise of Moto2 GP... $250K.. 250 cc race only engines tho.
Posted on: 8/1/2012 6:41 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11177837

RE: Shaft driven props
Dunno IF this applies: But Electric Motors when fitted with driveshafts for Air propellers, be they solid, tube or even CF tube, develop Serious Vibration / resonance issues... Airframe damaging typically. Band aid finally found was have a flexi coupling at the engine end; Rubber Tube.. Spring etc? But the real 'fix' was to gimbal mount the engine itself (yup 2 axis) so the generated harmonics have nowhere to go Sounds odd indeed, But having seen it in action.. it's a V effective solution.
Posted on: 7/26/2012 9:19 AM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11170032

RE: Well bugger, I busted a backplate.
Those crappy Zinc lead(?) alloy backplates would often deform and even break under the screws. Discovered as a Kid (with No spare $) that Solder stuck to the backplates as if they were of copper :-) IMO JB weld is surprisingly lo grade epoxy... the power of advertising in action.
Posted on: 7/26/2012 9:07 AM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11170023

RE: where to get 300 size brushed motors for edf use
Buy BL motors... the pesky things cost less than Brushed!
Posted on: 7/3/2012 7:55 PM by Author "danilo-2" in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11142025

RE: What can I put on this?
Doesn't seem that heavy.. for an old skool 1/2 a If that's a correct weight. Built a few House of Balsa' 1/2 A's' that were more weight than that and they flew OK on a TD 051. But better on an 09 though.
Posted on: 7/3/2012 7:51 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11142020

RE: Scalpel Flight Video
Interesting model. But frankly the constant use of telephoto and zoom. Really messes up my ability to deduce/perceive the true speed of the thing. Based on the video alone she seems a bit sloow. Hopefully that's just the videoing problem?
Posted on: 7/2/2012 7:15 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11140662

RE: Pilot QB series plane

Posted on: 5/17/2012 3:03 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11084804

RE: 1/2 A flying wing?
Try a Balsa Pibros?? http://rc-soar.com/pibros/ look at the balsa version #9 if balsa is preffered Plans are in the link somewhere. These are ballistic with decent power fitted Figure out how to add a engine on the front (skill testing question :-) and go fly
Posted on: 5/15/2012 11:23 AM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11081737

RE: Honker!
Yesss! please a PDF of the original version would be great if possible ? I never built one of these when they were around . Won't miss out This time.
Posted on: 5/10/2012 8:37 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11076506

RE: Monokote that 1/2A
Nice covering work.. If I might suggest ? Try one of the 'other' films, aqs these are typically far more user friendly. IMO Monokote is The hardest covering to apply well... as you have done. Also the heaviest covering with the possible exception of that Coverite fabric 'stuff' and It shatters on impact, not great when experienced. Goalposts have moved quite a long ways since monokote was the first available covering film..
Posted on: 4/8/2012 10:00 AM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11033131

RE: any body have the kit of 1/2a hobby shack sst?
Ooops sorry didn't know the pedigree of the silly thing. I just bought the kit, presumably like everybody else, because it was too cheap to pass up. A friend, who builds stunters (to perfection) CNC cuts his foam cores, mostly hollowed, on the machine and uses balsa sheeting and capstrips, then carefully removes the foam in the bays between the cap strips. He claims there is still a slight weight gain over a built up wing, with the advantage being a worthwhile increase in rigidity. A compromise he deems worth the effort. All one needs is a CNC foam machine and the skills to use it :-) My view remains steadfast : the 1/2A SST should stay a forgotten footnote, it really wasn't a memorable item.
Posted on: 4/8/2012 9:54 AM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11033124

RE: any body have the kit of 1/2a hobby shack sst?
that's funny... $11 for a copied 'plan' .. the kit cost me less than $10 bux direct from Hobby shack.. back when. Model is mediocre to crappy. Still have it though stored in the rafters Too cheap to bin it ..basically. The wing is the only neat thing about it being foam with sheeted leading edges and cap strips.. Tooooo heavy though The fuse splits almost instantly, the engine mount setup guarantees fuel foaming on a TD... Not good. The elevator is too small to be effective. There IS reason it was a Very Cheap kit.
Posted on: 4/7/2012 7:58 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11032447

RE: INSTANT CURE TO WINTER BLUES! ONLY $235!!
[quote]ORIGINAL: vertical grimmace How many rpm do you get with that set up with the Cyclone? I have several of that size fan, and the electrics get them easily over 40,000. That just looks like too much load to me for an IC engine of that size. Maybe a .15? I would like to see and hear that thing spin! [/quote] Absolutely agreed! I have $12 !! hobby king motors that hit 40,000 rpms on a wemotec 70mm fan, which incidentally, is of 'higher' spec than the one that pore lil Cyclon is lumbered with. You are running it for the Sound of a wee 2 stroke burning itself out. Not for the performance derived. Horses for Courses Kids.
Posted on: 3/28/2012 7:23 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11019308

RE: What are used Norvels worth?
[quote]ORIGINAL: DeviousDave Depends a lot on condition. New ones are worth a solid $45 (Big Mig .049 CL) to $60 (AME .061 R/C) and it drops off fast. A clean used one will run about $30. Non-R/C motors will bring a little less. [/quote] Paid $30 for 2 nib 061's in Dec.. rc and big mig... one sourced here at rcu's 'for sale' section even. Some think these are worth large... many don't ;-)
Posted on: 2/18/2012 2:02 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10964862

RE: Joy Stick
I still have mine ;-0 also built a longer span wing with ailerons.. after a short while as the plan wing wasn't great. flies fine and far 'better' with the extra 6'' span and especially with the ailerons. Never even bothered making / fitting the wheels .. what for? Build one ? it's a fast build.. do suggest building it lighter, as there's no need whatsoever for the 1/8" fuse, although mine did survive a 80/100' power dive, Stuka style, early on, onto a currogated steel roof , largely unscathed because of the overbuilt construction.
Posted on: 2/18/2012 1:57 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10964849

RE: Cyclon / Fora / Profi .049 Speed Trainer
OK... so far so good :-) erm what 's the hole in the front for?
Posted on: 12/19/2011 7:43 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10867419

RE: AME 061 Needle valve which one?
Thanks Gents.. Clearly .. at least now :-) I'm going to give the remote valve a try. No NV breakage issues and No fingers in the prop problems.. welll almost :-) 100% reversible and transferable, as bonus. Have a few KK TD NV gizmos, never occured to retrofit one of those onto the norvel. Yer a far more determined man than I mr CP :-) I have a VA mk1, fitted with a very tight to the venturi, large nubbly brass wheel that makes even the Cyclon one look 'far away'. Sure it's less exposed, but scary to use.. maybe I just need a plastic glue on longer thumbnail ? otherwise, ain't no free lunch, as always. But I'm.. not... dismantling working setups to make this one work, this is a standalone exercise.
Posted on: 12/18/2011 4:49 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10865588

AME 061 Needle valve which one?
Just finished an old (1992) 1/2A combat kit. Lovely arrow shaft / ribs wing, state of the art in ...90 :-) I'm fitting a new Norvel 061 big mig (prerevlite but not the higher spec AME version) to it. Even have a hoarded new (original style) rubber ducky 5 x 3 on it. Plane is set up for bladder, Motor isn't. I have 2 choices of fine needle valves : Texas Timer OR Kitting it. The TTimer looks to need JB welding in place the Kitting one needs Venturi redrilling. Presumably, both are good product ? Hopefully installed with a minimum of long term damages? OR I could try a remote NV assembly maybe something cobbled to gether from bits from an RC car shoppe... Still need a fine NV tho. A remote would at least save the NV when I Dork the thing.. inevitable imo.. as my reflexes have not improved with age. Thoughts/ advise on this gentlemen ?
Posted on: 12/18/2011 10:24 AM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10865077

RE: 1/2A Servos Revisited
Have (still ) 81's, they work OK, noisy though. Have a lot of HK hxt900 and 500s :-) these have proven flawless and at ~ $2@ each absolutely disposable. Yet, in 5 years I've had to throw None (0) out. Surprised me too. Currently bought some Orange alegedly 'digital' HK variants. Dunno what these are like but I couldn't resist the Digital label, besides they were $3 :-)
Posted on: 12/15/2011 8:13 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10861732

RE: 50th Anniversary Flight - Pageboy
Search through RC Groups for Diddlebugs? Dozens of suitable and delightful designs, twins even. (once you've Fuelproofed them tho :-)
Posted on: 11/26/2011 7:24 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10830556

RE: Aileron linkage
A sorta short Goss wing? :-) I've had No darn luck with those wee sullivan snake/cables.. ever. They always added so much drag that the servo was struggling or the control was just plain sloppy, usually both happened. A 5 gram servo next to the aileron surfaces could be good? certainly be no issues with creaky /sloppy linkages :-).
Posted on: 11/26/2011 7:22 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10830553

RE: Herr Engineering Pitts Special 24
Thank You! that will be used :-) Nice models that you have built there The Tunnan with the yellow & chrome on it.. is it a ducted fan.. I have to ask as I can't see any propeller. But then the inlet /ex are scale like.. so I'm not sure, either way :-). Foam & brown paper is a Fine technique. I find it tricky to get on just enough white glue to permanently stick the paper to the foam. A few models suffered from delamination after a summer's season until I realised i needed to up the glue/ water mix ratio. I just paint my paper skins with acrylics though. Hey! I also have a couple of Conquest radios, that still work just fine .
Posted on: 11/24/2011 8:23 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10827786

RE: Herr Engineering Pitts Special 24
Fine workmanship on those models
Posted on: 11/23/2011 11:29 AM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10825752

RE: Herr Engineering Pitts Special 24
[quote]ORIGINAL: jonastecknare Whatever you do with your Pitts! I think its cool. Do what makes you happy, or whatever. [/quote] Amazing... a Tunnan with an 049? Here I've been foolishly trying to make an EDF 50mm verrsion.
Posted on: 11/21/2011 7:14 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10823145

RE: Norvel and Stels engines in Market
true enuff BUT they are also 6! Bills . and don't even have plugs.
Posted on: 11/10/2011 7:27 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10806433

RE: What to do with a plane after you fly the wings off of it .
Unless you have unlimited 'storage' space ( I don't anymore :-) There's an fine opportunity for a bit of "Model Baseball":.. to try and bash it out of the field for a home run. Surprisingly satisfying too :-).
Posted on: 10/30/2011 7:20 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10790042

RE: Electric conversion for Piper Cub Cruiser
assuming that YOU can build this into a 10oz Airframe.. sans gear?? Then a $9 Hobby King 2730 24 gram motor of 1500 kv WILL spin a 8 x4 prop enough to Hover the thing.. at will.
Posted on: 10/30/2011 7:18 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10790037

RE: 1/2A 3D plane really 3D??
[quote]ORIGINAL: airraptor Danilo yes i know all about the electric stuff. I just like to be different sometimes. [/quote] Hey ! fill yer boots.. Mate
Posted on: 10/23/2011 8:48 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10779520

RE: New Cox ebay store
As Above mr Cox Sux Not too surprising that one Ebay dweller would support / justify another. Don't be putting that downpayment on the Holiday Home in Barbados, just yet :-)
Posted on: 10/19/2011 7:22 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10773974

RE: House of balsa Me109 with 1/2A?
erm Use a Radar gun on it. I'm curious as to it's "actual' top speed, not keyboard claims :-)
Posted on: 10/12/2011 8:10 PM by Author "danilo-2" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10762483