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RE: Early RC?
[quote]ORIGINAL: rrengineer Bob, Good to hear from you. I still have several unbuilt Early kits. So many kits, so little time. I retire in less than 4 years and plan to build, build, build with my new found time. Many of the kits you produced can be reproduced at Lazer Works. Eddie will cut a short kit from any plans you provide. Having you answer questions is a valuable resource. Wish I lived in your part of the country. Would love to attend some of the vintage meets you guys attend. Mike MacLean [/quote] Start a Vintage meet in CA. There is one up in Oregon IIRC. CA is a long state with a lot of people. You could have at least three fly ins in its length.
Posted on: 5/20/2013 7:29 AM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11517011
Kentucky Bluegrass Vintage Festival for 2013
It is almost time for the Kentucky Bluegrass Vintage Festival (KBVF) fly in at Lexington, Kentucky See https://sites.google.com/site/kbvfky/ for a 13 page brochure. This year the KBVF is Thursday and Friday, May 23 & 24, sponsored by the Lexington Model Airplane Club. Saturday May 25 is a charity float fly sponsored by the Central Kentucky Float Flyers. Sunday is a sail plane fun fly sponsored by the Clark County R/C Barnstomers. Included this year as part of the KBVF is any plane with an original or modified ACE transmitter qualifies for vintage.
Posted on: 5/16/2013 3:41 PM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11513568
RE: FrSky 2.4Ghz for JR Tx
[quote]ORIGINAL: aeajr You JR guys still loving this FrSky stuff? [/quote] I'm not a JR guy but I am very impressed with FrSky. I have several and have not had any problems.
Posted on: 9/10/2012 2:09 PM by Author "iflyj3"
in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=11224108
RE: Wood Gllue
[quote]ORIGINAL: Bax Duco cement is a good substitute. [/quote] There are several glues that will work but none are a true substitute for Ambroid. Ambroid dries slow and penetrates well. I am still flying a plane I built in 1967 with Ambroid, Epoxy and white glue.
Posted on: 8/17/2012 10:12 AM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11196932
RE: Wood Gllue
This web site list it http://www.happyhobby.com/hobb_html/ambroid.htm
Posted on: 8/17/2012 9:43 AM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11196888
RE: Radial engine recommendations?? Looking for a home for a Saito 120R3!
[quote]ORIGINAL: Rv7garage So I want to find a home for a Saito FA-120R3 radial. Or maybe a FA-200R3. Kit would be [u]very much[/u] preferred- any suggestions? Especially a WWI-era bipe would be sweet, but whatever- give me some ideas, please! [/quote] 1/4 scale J3 Cub
Posted on: 8/6/2012 5:35 PM by Author "iflyj3"
in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11183439
RE: Anyone have older Tower Hobbies catalogs? Hangar 1 F-105.
I looked the other day and couldn't find it. Now, since someone located it, here is the scan of the page.
Posted on: 8/3/2012 2:24 AM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11179354
RE: What in the world are these??
To me, it looks like multi-cylinder air compressor.
Posted on: 7/31/2012 3:38 PM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11176378
RE: Vintage RC planes that did not fly well ?
You felllows would be welcome at a Vintage fly in. We have fun flying the oldies. Visit http://www.vintagercsociety.org/ for our web site and a Vintage fly in near you. BTW, this year it is any design prior to Jan 1 1977. It can be a new built plane. This year I am having a ball trying to remaster single channel push button on a Lil Esquire with a throttled Cox .049. I am using a synthesized single channel with 2.4 gear and modern servos. It is the UltiMono by Jean-Marie Piednor.
Posted on: 7/21/2012 11:16 AM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11163613
RE: Antique SS Transmitters
[quote]ORIGINAL: K-H2o  IflyJ3- Thanks !!! I will check it out.  Looked thru everything under Transmitters today, Not quite sure how there search works cause this was not in it.  Aloha, Karl [/quote] I failed to point out the support for the MicroPro8000. In my signature is my web site for the MicroPro8000, also called the MP8K is http://sites.google.com/site/mp8kinfo I specialize in the MP8K and only service the MP8K in addition to programming upgrades and supplying hardware to convert to 2.4 GHz. Also, I moderate a YAHOO site is available for MP8K support that has over 600 members worldwide at http://groups.yahoo.com/group/mp8k
Posted on: 6/27/2012 2:19 AM by Author "iflyj3"
in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=11132071
RE: Antique SS Transmitters
Look on eBay now. ACE Micropro 8000 single stick. On of the best ones that were made. http://www.ebay.com/itm/130719332031?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649
Posted on: 6/25/2012 4:15 PM by Author "iflyj3"
in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=11131649
RE: Logictrol 5 Encoder Pulse Stream
Very good. FYI, I just noticed from your picture that you are using NiMh batteries. If you should have a similar problem in the future, replace the NiMh battery with a NICD or LiFe. The best NICD I have found is the Sanyo N700AAC. It has an ESR of 16 mil ohms. The NiMh I have dealt with, the factory told me they were just below 50 mil ohms. I am new to LiFe, but everything I read indicates a very low ESR.
Posted on: 6/21/2012 5:50 PM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11127135
RE: Logictrol 5 Encoder Pulse Stream
[quote]ORIGINAL: crigotti Thanks everybody for the nice comments. I do have a question though. I have noticed that the servos have a ''jitter'' to them across their entire travel and not just at neutral. If I move them a little bit off neutral, when the servo stops, the jitter is back. Move them full throw, and when the servo stops,the jitter is back. It's not much, but all of them do it and here's a kicker, they seem to do it in unison. I'm suspecting something on the encoder board. I could shotgun the board by replacing all of the componets, but I thought I'd get some feedback from here first. Perhaps the 50 hz oscillator? [/quote] I had this problem with the Spektrum decks in the MicroPro8000 (MP8K). What I found is the current draw of the 2.4 deck is not constant, but random spikes. This large amout of current caused the voltage drop to the encoder to be interpreted as a small stick movement. The MP8K is a processor driven encoder and the fix for it is not applicable with the Logictrol. Scope the +9 volts in the transmitter and see if it has a bunch of noise on it. Then cut off the RF deck and see if it disapears. A heafty filter cap across the power may or may not help. I have not scoped the FrSky RF decks to see how they behave.
Posted on: 6/20/2012 7:37 AM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11125066
RE: Logictrol 5 Encoder Pulse Stream
You have done a fantastic job on the restroration.
Posted on: 6/16/2012 2:44 PM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11120430
RE: WACO YMF
[quote]ORIGINAL: ceije gents, i hava a problem and could use a little coaching. i trying to cut threads on a piece of left over 4-40 rod. i do have the proper taps and dies, i can cut threads but they seem not to be wide enough to fit in a receiving thread. the rod i'm using came from dubro so i assume its of proper diameter. i did notice that their thread buldged from the rod where as my cut doesn't which would give a tighter fit. can my be tightened i did notice a side screw which leads me to believe this is what its for. or am i way out way out to lunch on this. or do i need to do more research with what i have. confused, chris melhus, ceije 196 [/quote] When the threads are larger than the parent material, they have been formed by the roll method. With your die you are making cut threads. The rod is under size for cut threads. Roll threads are stronger than cut threads.
Posted on: 6/11/2012 2:55 PM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11114785
RE: Logictrol 5 Encoder Pulse Stream
Looks good.
Posted on: 6/8/2012 1:56 AM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11110938
RE: Logictrol 5 Encoder Pulse Stream
Good deal, I feel much better with what you have done. Have fun with your conversion.
Posted on: 6/2/2012 1:51 PM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11103975
RE: Logictrol 5 Encoder Pulse Stream
OK, here is a drawing. The 2N2222 is a good general purpose small signal transistor of the NPN type. There are several that would subsitute as long as it is NPN. Notice the collector has no resistor to the positive rail. It gets its voltage from the RF deck. Most all 2.4 GHz RF decks made are designed to be driven with an open collector transistor. This allows the deck to use a different voltage and still work. The voltage from the RF deck PPM in line can be higher or lower than the driving circuit such as yours. For example, most 2.4 decks actually use 3.3 volts internally. Sometimes driving them with 9 volts causes a problem. That is why the DIY FrSky deck has a blocking diode in series with the PPM lead.
Posted on: 5/29/2012 10:29 AM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11098689
RE: Logictrol 5 Encoder Pulse Stream
JMP and I discussed the situation on Friday. He recommended a stronger pull down resistor from the collector of Q5 to ground. However, that is now a mute point as that is what you have done with the replacement circuit you have done. Your replacement circuit is the right direction as that gets the RF deck out of the picture. Looking at your scope traces, even though it works, I am leary of the down level of the PPM signal. If you plan on using this as is I would check it over a large temperature range, from at least 0 degrees and 150 degrees. However, I still recommend a 2N2222 transistor with a 47K from the base to the collector of Q5. This will present the open collector to the FrSky deck as the RF deck is looking for current flow only on the down level. You can add this to your new circuit easily.
Posted on: 5/29/2012 3:13 AM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11098259
RE: Logictrol 5 Encoder Pulse Stream
[quote]ORIGINAL: crigotti [quote]ORIGINAL: iflyj3 It looks like the feedback loop for the single shot, diode and capacitor from the collector Q5 to base of Q4, is somehow being affected by the oscillator running. I am stumped without changing out some parts with different values to get the SS working without the xtal. [/quote] Dan, If the RF section isn't transmitting, and the FrSky
Posted on: 5/19/2012 3:22 AM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11086527
RE: Logictrol 5 Encoder Pulse Stream
It looks like the feedback loop for the single shot, diode and capacitor from the collector Q5 to base of Q4, is somehow being affected by the oscillator running. I am stumped without changing out some parts with different values to get the SS working without the xtal.
Posted on: 5/18/2012 3:15 AM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11085383
RE: Logictrol 5 Encoder Pulse Stream
Have you scoped the output of Q5 to see the difference with the xtal working and shorted? It bothers me that it won't work unless the xtal is working. Removing L4 killed any RF out the antenna.
Posted on: 5/17/2012 7:22 PM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11085128
RE: Logictrol 5 Encoder Pulse Stream
Removing L4 stopped the final RF amplifier. The RF is still at the Buffer Q2 which is where the modulation takes place. Since Q2 needs to be working for the single shot to function tells me there is a loading problem for Q5. Did you try the parallel 2K2 resistor that JMP recommended. That should provide enough load for Q5.
Posted on: 5/17/2012 2:21 AM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11084037
RE: Logictrol 5 Encoder Pulse Stream
It looks like Q5 is bad or the 4K7 resistor feeding the base of Q5 is open which is not likely. I don't think the transposition of the 10 and 12K resistor would make much difference as that is the feedback loop to make Q4 and Q5 a single shot. The single shot takes the little spike from the half shots and makes it longer.
Posted on: 5/16/2012 2:24 AM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11082642
RE: Logictrol 5 Encoder Pulse Stream
[quote]ORIGINAL: JMP_blackfoot I would suggest a simpler solution: - Remove crystal, or rather just plain short-circuit it. - add a resistor of say 2.2k from the collector of Q5 to ground (across the 12k resistor) and a diode from the same collector of Q5 to the FrSky modulation input, cathode to Q5 collector, anode to FrSky module input. [/quote] Good idea JMP, I completely missed the 12K to the collector of Q5. BTW, I believe the DIY FrSky deck already has a series diode in series with the PPM in line. The early ones did not.
Posted on: 5/13/2012 10:54 AM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11079219
RE: Logictrol 5 Encoder Pulse Stream
After studing the schematic, this is what I would try after you get the encoder cleaned up. To interface a FrSky module to the Logictrol. 1) Remove crystal from the RF deck. 2) Remove the 4.7uh choke from Q5 collector to L1. 3) Remove C5 from the collector of Q2 to the base of Q3. 4) Remove the 100 ohm resistor from the base of Q3. 5) Remove L4 from the collector of Q3 to the plus rail. 6) Add a 10K resistor from the collector of Q5 to the minus rail (Ground). 7) Add a 47K resister from the collector of Q5 to the base of Q3. 8) Connect the PPM lead from the FRSky deck to the collector of Q3. It is now an open collector drive. 9) Connect the FrSky power leads appropriately. At the collector of Q5 you should see a negative going pulse and the collector of Q3 a positive going pulse when a load is present. Scope is referenced to the minus rail. The FrSky decks wll operate with either polarity of a PPM pulse and the width of the channel separator pulse (CSP) is not important. I have tested them from a 245 to 500 us CSP. If this doesn't work and you have a good clean signal at the collector of Q5 you may try a 2N2222 transistor in place of Q3. Right now I see no reason why Q3 shouldn't work. Others may have different suggestions. Note: I have never converted one of these, so this is strictly my opinion of how I would go about it.
Posted on: 5/13/2012 4:03 AM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11078801
RE: Logictrol 5 Encoder Pulse Stream
Here is a schematic of a Logictrol transmitter from my friend Eloy out on the left coast. It is probably not the exact one you have but I bet it is close.
Posted on: 5/12/2012 5:15 PM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11078419
RE: Logictrol 5 Encoder Pulse Stream
[quote]ORIGINAL: crigotti I'm starting to wonder if the summing amp for the encoder is part of the RF board? I see 5 transistors, 1 for each channel, and then 2 more for the free running multivibrator. Isn't there supposed to a few more transistors? [/quote] I was just studying your picture and I arrived at the same conclusion you have. The summing amp is somewhere else. Also it is important as to the type of transistors used in the circuit of the amp. If they are PNP then most likely the pulse is pulled up to the positive rail. The module you are trying to use expects an open collector to the minus rail. If PNP's are used you will have to install a NPN transistor circuit to be the OC interface. At the top right corner of the RF board are two black round transistors which I bet are the summing amp/single shot. Scope around there and see what the signal looks like.
Posted on: 5/12/2012 3:06 PM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11078298
RE: Logictrol 5 Encoder Pulse Stream
[quote]ORIGINAL: crigotti [quote]ORIGINAL: iflyj3 [quote]ORIGINAL: crigotti [quote]ORIGINAL: JMP_blackfoot For an extensive treaty on restoring vintage radios: http://www.rcuniverse.com/forum/m_8470037/anchors_8470037/mpage_1/key_/anchor/tm.htm#8470037 [/quote] Thank you! I'll read it and study the material. [/quote] Do you have the schematic for the transmitter? [/quote] No I don't. Do
Posted on: 5/12/2012 2:43 PM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11078266
RE: Logictrol 5 Encoder Pulse Stream
[quote]ORIGINAL: crigotti [quote]ORIGINAL: JMP_blackfoot For an extensive treaty on restoring vintage radios: http://www.rcuniverse.com/forum/m_8470037/anchors_8470037/mpage_1/key_/anchor/tm.htm#8470037 [/quote] Thank you! I'll read it and study the material. [/quote] Do you have the schematic for the transmitter?
Posted on: 5/12/2012 6:05 AM by Author "iflyj3"
in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=11077871
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