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RE: os 70 surpass.
Type FS70 into the Tower website and many parts come up. They still have most parts.
Posted on: 11/20/2009 10:34 AM by Author "gkamysz"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9267421
RE: How glow to diesel conversion pays off ?
BB are you still running this head? http://www.rcuniverse.com/forum/fwd.asp?messageID=8152335
Posted on: 11/19/2009 3:29 PM by Author "gkamysz"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=9265535
RE: How glow to diesel conversion pays off ?
My MVVS diesels have always throttled just fine. The 2.5D I don't think I've ever run below 12kRPM. My own four stroke conversions throttle well, especially the smaller ones. There are many variables. Fuel mix should also be considered and may not be ideal for all applications, in particular ignition improver.
Posted on: 11/19/2009 2:45 PM by Author "gkamysz"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=9265469
RE: How glow to diesel conversion pays off ?
The compression needs to be adjusted for the RPM range you are operating in. Any decent engine, diesel head design, and carb should easily allow idle to any full throttle engine speed the engine is capable of as glow. However, the compression setting for a 6000RPM WOT speed will be different than a 12,000 RPM WOT speed. This is expected. Glow suffers this problem also. It's just masked by running a rich needle at low WOT RPM, which also retards the timing. Proper compression ratio setting for glow would allow a leaner needle setting, but nobody goes through the trouble.
Posted on: 11/19/2009 10:48 AM by Author "gkamysz"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=9265003
RE: A strange question coming from a motorized bicycle enthusiest
I prefer this. It's probably no louder than the Harelys around here. http://www.youtube.com/watch?v=ZFyvLz74X_E
Posted on: 11/18/2009 7:56 AM by Author "gkamysz"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9262330
RE: glow plug re-thread
Helicoil isn't tough to do. But if you need to do one, the helicoil kit is expensive. In a fourstroke where the plug is offset it can take some time to square things up correctly. If the thread isn't square tot eh sealing face the plug gasket will not seal.
Posted on: 11/17/2009 10:45 AM by Author "gkamysz"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9260035
RE: What does this screw do on a OS 120 surpass 4 stroke?
This is the idle stop screw. With that screw removed, the throttle barrel should be easily removed. Look for the slot int he throttle barrel when reassembling it. This screw engages the slot. By adjusting the screw you can set a hard stop for idle RPM. Most people set it up to allow the the throttle to close completely to cut the engine. I sometimes use it as intended when testing on the bench.
Posted on: 11/16/2009 5:22 PM by Author "gkamysz"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9258411
RE: A PISTON QUESTION
Awesome! Thanks.
Posted on: 11/2/2009 9:07 PM by Author "gkamysz"
in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=9223790
RE: Saito FG-20
NGK ME-8 doesn't seem to exist other than in catalogs. You can't buy it anywhere. Rimfire plugs are very good. http://sparkplugs.morrisonandmarvin.com/
Posted on: 11/2/2009 4:32 PM by Author "gkamysz"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9223049
RE: A PISTON QUESTION
So how did your bore measure out? Measure the piston to see how things look. Is the shiny surface wear or is it a dud forging where the unmachined areas got polished in the deburring tumbler? You'd probably get more response from the Gas forum. I happen to check a used FS-52 liner last week and it was round within ±.0001" and was about .0003" larger toward the top, but that didn't seem to be wear.
Posted on: 11/2/2009 11:00 AM by Author "gkamysz"
in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=9222333
RE: SuperTigre 3000 Conversion
That's about 2/3 the power DDD claim on the website? Greg
Posted on: 10/31/2009 5:22 PM by Author "gkamysz"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=9218172
RE: Anyone familiar with CS engines?
Boy, that head really looks out of place on the .25 and .28! I would bet the insides are a clone of an OS.
Posted on: 10/30/2009 10:09 AM by Author "gkamysz"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9214780
RE: OS Engines Four Stroke Disassembly Video
Two stroke is basically the same, just many fewer parts. Most two stroke engines the piston and rod assembly slip off the crank pin. But, if your two stroke engine has a plug in the back of the cylinder, the wrist pin will need to be removed in the same manner. The only trick is heating the engine to remove the liner. In a two stroke ringless, make absolutely sure you mark the orientation of the piston and liner if the liner isn't pinned. If you have a ringed two stroke check for a pinned ring and make sure the ring is correctly installed before installing in the sleeve.
Posted on: 10/29/2009 2:17 PM by Author "gkamysz"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9212514
RE: OS Engines Four Stroke Disassembly Video
I'll add some comments to my web page. I was dealing with a new engine (which I often do) and forgot to mention some of those step when dealing with a used engine. 99% of the time the bearing comes out, of course this time it didn't. It probably just needed to be a bit hotter. In some engines the main bearing is larger than the crank counter weight and you can use the crank taking care not to marr things. Not the case in the FS-52. That part was to be edited out and somehow I missed it. I had a bore gage on a used FS-52 liner the other day and it was round as could be within 2/10,000th and inch. Orientation won't matter. Piston orientation should be noted on a used engine. Conrods will often have the chamfer only on one side for the crank pin and will be noted in the reassembly clip. I've never bothered with checking which bore the followers came out of. I might put together a clip of just the tricks as putting them in with the basic disassembly would make for a very long video. Pushrods can be installed either way but if you put the in the same way and on the same valve (along with the same cam follower) the clearance might not need adjustment after, and they won't require readjustment due to wearing in again. The top and bottom ends of OS rods wear slightly differently.
Posted on: 10/29/2009 12:06 PM by Author "gkamysz"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9212222
RE: OS Engines Four Stroke Disassembly Video
It works extremely well. I've had a handful of people ask for them already through my site, and nobody visits my site. So demand could be quite high. I have material on hand to make 20-30 units. I'm setting up another lathe this week so I hope to have some made soon.
Posted on: 10/28/2009 9:57 PM by Author "gkamysz"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9210918
RE: OS Engines Four Stroke Disassembly Video
[quote]ORIGINAL: mike109 G'day Does the 52 have bearings or bushes for the cam? I have never pulled mine apart. Getting the cam bearings out of some models can be ''interesting'' especially in an older engine. I bought a couple of little used but old FS40s at one stage and we had lots of fun getting the bearings (which were totally gummed) out. I'd be interested to see how you would approach this. [/quote] All OS above the FS-30 have bearings. I do have a solution for removing the bearings. I made a puller. I was going to put it in the clip. I want to make a few sets before announcing it. http://dieselrc.com/blog/?p=24 Greg
Posted on: 10/28/2009 8:08 PM by Author "gkamysz"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9210596
RE: OS Engines Four Stroke Disassembly Video
Thanks for the comments. It took an hour to edit dead time and that cut the length of the video in half. 10 minutes is still pretty long for a youtube clip in my opinion. Those who watch won't really be browsing for entertainment. Reassembly will come on Friday probably. I'll post in this thread. Greg
Posted on: 10/28/2009 7:29 PM by Author "gkamysz"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9210464
RE: Saito 50th anniversary Gold plated 30
http://www.horizonhobby.com/Products/Default.aspx?ProdID=SAIE030GA
Posted on: 10/28/2009 1:08 PM by Author "gkamysz"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9209347
RE: Saito FG-14/82 gas engine
It is new. There are a couple videos on youtube. It looks like some European shops have them. Greg
Posted on: 10/28/2009 12:01 PM by Author "gkamysz"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9209171
RE: Anyone familiar with CS engines?
Trust us when we say these things have spotty QC and mixed results. That is the reason they aren't everywhere. If it's about experimenting, go ahead. I do it all the time. But if you end up adding a good OS carb, will it be any cheaper than an OS?
Posted on: 10/28/2009 9:57 AM by Author "gkamysz"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9208888
RE: Glow Plugs for RC and non-RC Engines ?
I have some Rossi RC plugs from the early 90's. They have an idle bar. I don't know if they still make them. I also have some Rossi RA plugs with aluminum bodies.
Posted on: 10/27/2009 10:40 PM by Author "gkamysz"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9207956
RE: Anyone familiar with CS engines?
No probably not. The sport engines are not common at all in the US. I bet there are a lot of them out there under other labels. You can find plenty of info about the diesel replicas as they are fairly popular. There is also a lot of info about the CL speed engines out there. I think they are falling out of favor there too. If you have one just treat it like any other glow engine. Just figure out if it is ABC or ringed and break it in accordingly.
Posted on: 10/27/2009 4:48 PM by Author "gkamysz"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9206749
RE: Dieselized, TD .010
I've been itching to run the AE 0.1 lately. If I do it I'll post here with a youtube clip. There are more than a handful of engines out there with no counterbalance. The MVVS 1.5 is one I've owned. You could start with a grade 8 bolt or and socket cap screw. Both should be strong enough. I've not tried making a crank from bolts or any other material yet. It's on my list. As soon as I get my Clausing going to replace my old Atlas more projects will be within the realm of possibility. The old Atlas is getting tired and sloppy. New bushings for the countershaft would take care of the vibration, but it would still cut a taper near the headstock. I've heard of people heating Cox pistons to cherry red and quenching in oil, then lapping to fit the cylinder. I don't know if this is valid. And it seems it would do a number on the surface finish of the piston. I had a TD .049 that I assembled from loose parts that had a piston to cylinder fit as you described, like ABC. I only ran it a bit and sold it. It ran well. Jens, I saw your helical gear cutting clip on youtube. Very impressive.How did you make the cam for attachment? It looks like flat plate rolled to fit. Which engine are you building? Feeney perhaps?
Posted on: 10/27/2009 4:37 PM by Author "gkamysz"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=9206709
RE: Dieselized, TD .010
Did the piston cylinder set hold pressure for any length of time when brought up to TDC? In past discussion about tiny diesel people have said that if it doesn't have that bouncy compression and doesn't hold for at least a few seconds you can forget about it running. I have an AE 0.1cc. I have yet to try running it. 40% ether should be good for the fuel and has also been mentioned when talking tiny diesels. The AE papers recommend 30% ether for the larger sizes and the addendum for the 0.1 does not say anything about fuel, only prop.
Posted on: 10/27/2009 11:59 AM by Author "gkamysz"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=9205919
RE: Anyone familiar with CS engines?
Ningbo CS Precision Machinery Co., Ltd. makes CS. They produce engines under their own label and OEM labels. They've made everything from diesel replicas, to sport engines, to racing glow engines. The company changed ownership a few times over the last decade. The last time I saw the website they also produced RC helis and outdoor grills and accessories. The website appears to be gone. Greg
Posted on: 10/27/2009 11:06 AM by Author "gkamysz"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9205769
RE: Dieselized, TD .010
Andy, How did you seal the contrapiston?
Posted on: 10/27/2009 10:53 AM by Author "gkamysz"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=9205727
RE: help with prop sizes
My PAW .35 made about .34HP. Greg
Posted on: 10/26/2009 7:48 PM by Author "gkamysz"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=9204209
RE: help with prop sizes
The PAW .35 I had was a dog. An 11x7 was more than enough load for the power it could muster. It turned that prop about 8000 RPM. Pe, is right, adding 2" to diameter in this size range will virtually double torque required to turn the prop at the same RPM.
Posted on: 10/26/2009 10:49 AM by Author "gkamysz"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=9202957
RE: Thunder Tiger 130 Four Stroke
OS has dropped bronze valve guides and seats also. Many Saito do not have bronze valve seats, but are chromed like the liner. While these engines are still relatively new, I've not heard of any failures. Many casting alloys have a fair amount of silicon, especially anything used for engines.
Posted on: 10/23/2009 11:20 PM by Author "gkamysz"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9197455
RE: Unusual request - educational application
The problem is that the engine will burn a limited amount of biodiesel even with ether. It's not going to be much of a test. A reasonably large size injected diesel engine is needed to test biodiesel. I've not seen any attempts or mentions of running biodiesel with spark ignition.
Posted on: 10/23/2009 6:42 PM by Author "gkamysz"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9196863
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