RE: Clunk line too flexible?
[quote]ORIGINAL: nonstoprc What is wrong with tygon tubing? I always use tygon inside the tank. Just make sure you replace it in one season or two. [/quote] Nothing really wrong with Tygon (if you use the high-quality stuff that doesn't harden). OTOH, you can use Viton on the pickup line and be done with it... http://www.mcmaster.com/#5119k41/=czx2le
Posted on: 7/2/2011 12:41 AM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10602410

RE: Walbro info and drawings here
I buy my diaphram kits, etc. from [url=http://www.lawnmowerpros.com/Walbro/Walbro-Parts.asp]these guys.[/url] There's a lot of Walbro diagrams, manuals, etc. at their site. FWIW. -Ken
Posted on: 12/24/2010 1:40 PM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10216132

RE: 50cc -Whose is the smoothest?
I use one of these on my DA-50... http://www.vesspropellers.com/servlet/the-69/50cc-Vess-Balance-Ring/Detail http://www.youtube.com/watch?v=0MMVk9Tc2Ic
Posted on: 10/1/2010 2:27 PM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10040713

RE: GAS Saito
[quote]ORIGINAL: Stiknrudder [quote]ORIGINAL: bradleyban [quote]ORIGINAL: kenhiraihnl I watched this one fly today...quiet and powerful... [/quote] New item out?? I can't find it anywhere [/quote] I read a one sentence blurb about it in some thread regarding initial testing ( from Peter Bergstrom I think.) And as far as HH having no idea about these engines, ignitions, and carburators
Posted on: 9/1/2010 4:10 AM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9973364

RE: GAS Saito
I watched this one fly today...quiet and powerful...
Posted on: 8/31/2010 2:16 AM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9970937

RE: Cant get sleeve back over the ring..
I don't own a .55, but isn't there an arrow on the top of the piston that points to the exhaust port? Some of my other OS engines have the arrow.
Posted on: 8/18/2010 3:49 AM by Author "kenhiraihnl" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9941836

RE: Happy Birthday Ralph alias Antique
I know this is OT, but I suspect Ralph doesn't monitor RCU much any more...Maybe we should start a thread on Ralph like Chuck Norris? Ralph will fix, and has fixed, any gas engine sent to him... Blind folded, with one arm tied behind his back!
Posted on: 7/31/2010 4:35 AM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9900541

RE: Happy Birthday Ralph alias Antique
Happy Birthday, Ralph...Reminds me of the Bob Dylan song... "I Forgot More Than You'll Ever Know"
Posted on: 7/29/2010 11:19 PM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9898166

RE: Kudos to Agape Racing and Hobby
My XYZ50 is running like a Rolex. Lost the Walbro and carb isolation block after a crash in a swamp. Engine was submerged over night. Got the parts I needed (carb, block, bolts, gaskets) from Jim at a very fair price and timely. Thanks Jim.
Posted on: 7/5/2010 1:37 PM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9845873

RE: SV17cc powered Aero Works 60-90 size Extra 300
Hi Wayne...again, it's uncanny how your experience with the SV17 is identical with my buddy's...One thing I noticed, however when the engine is running in a rich-sounding mid-range, there is a lot of ignition interference...The throttle rod and control surfaces were dancing to the ragged sound of the engine...He got his engine from TBM also...I'll monitor this thread to see how you're coming along...Ken
Posted on: 7/4/2010 1:02 AM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9843418

RE: SV17cc powered Aero Works 60-90 size Extra 300
[quote]ORIGINAL: willmissit I have one of these 17cc engines and cant get it to run. It starts easy with a electric starter but it sounds rich . I t want open up to full throttle without gurkling. When I tried to adjust the top end needle it finally closed all the way and the engine was still running erratically.  A friend of mine has one and is having the exact same problem. Could it be the timing or the ignition module? Always sounds rich but you cannot lean it out with the needle. Have tried both top and bottom end needles. Any help from anyone would be appreciated. Wayne [/quote] Interesting...I was helping one of my friends with his SV17...Same symptoms...Next attempt to tune the engine will be with the engine off the firewall, and on a test stand...
Posted on: 7/3/2010 5:22 PM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9842780

RE: TBM or Slimline for my 50cc?
[quote]ORIGINAL: rcfan450 This one (TBM Silent Beauty): http://www.troybuiltmodels.com/items/REPITTS50.html or this one (Chief Aircraft Slimline)? http://www.chiefaircraft.com/rcmsec/Models/Accessories/Mufflers/Slimline.html My worry with the TBM is that it'll fall apart and crack. I don't like the price of the slimline but if it's the stronger more reliable way to go, then that's what I'll do. [/quote] just wondering why you haven't considered jtec? their tf p-51 style fits in the narrow cowl reactor, etc.
Posted on: 6/7/2010 10:08 PM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9788494

RE: Dessert Aircraft decals?
[quote]ORIGINAL: House2twist www.bandegraphix.com got mine there and it's freakin sweet. cheap too and LOTS of color choices [/quote] +1...They sized it, printed, and shipped it same day I ordered it.
Posted on: 5/21/2010 5:54 PM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9750021

RE: How to tune a DLE 55cc gas engine
[quote]ORIGINAL: jedijody ...As the engine breaks-in and the ring gets a better seal it will require a slightly leaner needle setting mainly on the low needle. The high needle won't change much at all, if it does, it wasn't adjusted right in the first place. [/quote] +1! My experience, exactly! Should be included in the "sticky" for everyone's benefit. -Ken
Posted on: 5/10/2010 3:10 PM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9724084

RE: Electrocution
LOL...I used to work for OSHA...During a routine jobsite inspection, the employer told me that one of his workers recently drilled through a wall, hit an energized line and was electrocuted! WOW. I asked him if he had reported the fatality, as OSHA regulations require. He said, "Nah, the guy was just shocked, and learned his lesson." I educated him that electrocution meant fatal - No such thing as mild electrocution...LOL...Ken
Posted on: 5/4/2010 3:02 PM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9710157

RE: Question for the engine experts
FWIW, here's the features of my DA50 engine: Features Desert Aircraft, auto advance, electronic ignition. Walbro Carburetor, Exclusive Desert Aircraft designed cylinders, pistons, and crankshaft. CNC milled, 7075 aluminum alloy crankcase. Low vibration. Most torque in its class. [b]Long rod to stroke ratio. [/b] Aerobatic power curve. DA engines are designed using the latest tools and techniques, including 3D CAD and Stereo Lithography.
Posted on: 4/27/2010 5:50 PM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9693433

RE: Magnum .52
I wonder if the engine will also bring back the Champion V-2 1/4"-32 spark plug?
Posted on: 4/17/2010 2:02 PM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9667968

RE: 2 cycle oil
Ralph (RC Ignitions) has posted many times that he used Super Tech oil from Walmart...Right now, I'm using $45/gal oil that works for me...IMHO instead of hunting for the "best oil", adjusting the needles and getting good airflow to the engine are more worthwhile...Ken
Posted on: 4/10/2010 11:58 PM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9652083

RE: A123 vs. Hyperion LiFePO4
LiFePO4 and A123, what's the difference? I was wondering too, and found the answer by surfing the net... Some people tend to use the terms LiFePO4 and A123 interchangeably but there is a significant difference between the two. The fact is that A123 is a brand name for a specific type of LiFePO4 battery that incorporates nano-technology to significantly increase the current-handling capabilities. The capabilities of an A123 battery are truly impressive with a 2300mAH pack being able to deliver currents of up to 100A for 10 seconds or more without damage. That's a 40C rating. A standard LiFePO4 battery by comparison, may have only a 3-5C rating which is perfectly adequate for most RC applications but nowhere near as suited to hi-current applciations (such as electric power) as a true A123. When to use Well the answer to this is simple use LiFePO4/A123 batteries whenever it's possible. I've switched to LiFePO4 batteries for all my models now and have had absolutely zero problems. My NiMH receiver packs now sit unused in a drawer under my bench, having been replaced by some 1350mAH packs I built myself for under $10 each. My 30% Extra now has dual 2300mAH A123 batteries that can handle the nine hi-torque digital servos without even blinking. Given that LiFePO4 batteries are cheaper, smaller, lighter and better in just about every way than any of the other technologies when used as receiver pack, I'd say there's little reason not to use them.
Posted on: 2/17/2010 2:24 AM by Author "kenhiraihnl" in the forum "Batteries & Chargers"
http://www.rcuniverse.com/forum/fb.asp?m=9511300

RE: AAC Piston & Sleve for OS-140
Dave Shadel used to sell ABC/AAC piston/sleeve sets for various engines. I have some OS46 and an OS1.08 set. He no longer carries them, but maybe he'll chat with you about the OS1.40...Ken http://www.pspec.com/contact.asp
Posted on: 2/16/2010 12:49 PM by Author "kenhiraihnl" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9509355

RE: Gas Engine Fuel Clunk
+1! Hayes #249 is so flexible, it's ideal for the clunk in the 2oz header tanks of our helis. BTW, I had a "hard landing" in a swamp that sheared the wing off the saddle, leaving the nose of the fuselage submerged below the water line in the bullrush. The leading edge of the wing was at the water line, and the tail feathers were sticking straight up. The plane almost looked flyable, except for the broken 1/4-20 wing hold down bolts. When I pulled the tank, both viton line clunks had folded over to the front of the 16oz tank. Lotta negative g-forces in that sudden stoppage.
Posted on: 2/14/2010 6:40 PM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9503452

RE: Gas Engine Fuel Clunk
I use viton with dual clunks on my fill and pickup lines, and Hayes #249 neoprene with a 90-degree fitting for the vent line. With postage, the viton cost me about $5 per foot, but no more fuel system/plumbing problems. I wish viton could also cure brain farts and dumb thumbs. LOL.
Posted on: 2/13/2010 4:11 AM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9500182

RE: Best 50cc Class Motor??? (Excluding Price!!)
My favorite is slightly smaller (42cc), but it starts easily (even after prolonged storage), idles nice and low forever, transitions to full-throttle smoothly, pulls like a horse, and doesn't care if it's right-side-up or upside down. I'm running it on Mercury Marine Rejuvination oil at 50:1. Only drawback it's mounted in my El Cheapo Poulan, 18" chainsaw. -ken
Posted on: 1/31/2010 12:27 PM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9464036

RE: DLE 55
i'd stick it on the dashboard in the cockpit...the rpm range is 0-30,000...maybe we'll see a video of somebody's mini-tach displaying some unbelievable numbers (with a secret oil mixture)...lol...ken
Posted on: 1/23/2010 12:58 PM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9440791

RE: Engine mount question
here's one thing i do...using the main gear, i hang the fuse on a gate between my garage and patio...i secure the fuse with string to keep it from falling off the gate, and use a step stool for a work platform...the firewall is then horizontal, and it's much easier to align the engine, standoffs, and cowl...you can position the engine with standoffs to the exact location where your hub/cowl is centered, draw circles around the standoffs on the firewall, make an 'x' in the four circles, and drill...or use a template that comes with your engine...ken
Posted on: 1/19/2010 3:03 AM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9428524

RE: NGK CM-6
i found a local hawthorne/cat dealership with a parts department that will gladly bring them in for me for $2.99...seems like cm-6s used for r/c gassers are 2-3 times more expensive than those sold by a caterpillar tractor dealer for industrial uses...lol...ken
Posted on: 1/18/2010 1:16 PM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9426501

RE: DLE 55 Choke setup?
fwiw, the reactor1.60 manual shows the choke push rod setup for 50cc, starting on pg. 18... -ken http://manuals.hobbico.com/gpm/gpma1420-manual.pdf
Posted on: 1/17/2010 3:07 PM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9423817

RE: CDI interference
on my xyz engine w/ blue xyz ei module, my rudder was dancing to the rhythm of the slight low-stick burble...just the rudder channel...fortunately my fix was to separate ignition from radio leads as much as possible...now my rebuilt xyz has an rcexl ei unit w/ 3/4" plug (replacing the 5/8" bpmr6f)...starts in one or two flips, and no interference...i fly w/ fut 2.4...good luck...ken
Posted on: 12/27/2009 11:17 PM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9365132

RE: Dubro Tygon Tubing Watch Out !!!!!!!!
hopefully, i won't experience similar problems with the high-temperature viton fluoroelastomer tubing that ups just delivered a day after ordering...in round numbers, i ordered 10-ft for $36 and paid $16 shipping...that's about $5.20 per foot...looks like neoprene, but a lot softer and heavier (1/8" ID, 1/4" OD)...you only live once...lol...merry Christmas... -ken
Posted on: 12/24/2009 7:02 PM by Author "kenhiraihnl" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9357784

RE: LIST YOUR FAVORITE TWO CYCLE GLO ENGINES
os1.60fx - at first there was a lot of hair-pulling, teeth gnashing, and needle-chasing...one day the light came on (with help from these forums and bax, of course)...starts on the first back-flip, pulls like a horse, and taxi's back...what more can you ask...no wonder it's been in production for so long...ken
Posted on: 12/24/2009 1:17 PM by Author "kenhiraihnl" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9356980