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RE: 1/5 Pepsi Chipmunk - Build
Hi Rica, The washout on the Apache Chipmunks certainly works well. In particular you notice stalls are gentler and slow speed handling is much improved. I don't have a comparison between the same plane without the washout and these ones so I cannot give a direct comparison but these Chipmunks handle very well. Regards Ari
Posted on: 8/27/2012 7:00 PM by Author "apalsson"
in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11208412
RE: 1/5 Pepsi Chipmunk - Build
Thanks for the kind comments The Apache Chipmunks all have tabs on the ribs that ensure the correct washout. Yes, I'm quite familiar with MVVS engines because I distribute them in Australia and have several installed in my own planes. I suspect the 30cc will be a good choice for the Pepsi because of its compact size and light weight. My first Pepsi had a G38 which was a pretty good combination but took a bit of planning to fit inside the cowl. I have built all three of them so far and each has been a notch better than the last. I see Mike Clewes (the owner of Apache) has listed the business up for sale because he wants to retire. I can only hope that any new owners will be as dedicated to the modelling community as Mike has been. I started on the Cessna earlier but as expected, the house move put a stop to that project. Hopefully, I can start that again soon. This is where I had gotten to
Posted on: 8/27/2012 2:04 PM by Author "apalsson"
in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11208055
RE: 1/5 Pepsi Chipmunk - Build
[quote]ORIGINAL: rica1 Apalsson, can you get the Chippy covered before you start the next plane? Would like to see some photos of the covering. What eng do you have for it?[8D] [/quote] Rica, the Chippy has fallen by the wayside big time. We moved house a couple of times so the plane went into storage. I have just retrieved it because I finally have a workshop again. There has also been another
Posted on: 8/27/2012 12:33 PM by Author "apalsson"
in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11207941
RE: Evolution 26GX
[quote]ORIGINAL: quietstorm366 Evolution has their own brand of syn oil. Ck it out. John [/quote] MVVS recommends Mobil-1 Racing 2T for their engines. Same would apply to Evolution essentially being the same engine
Posted on: 8/26/2012 4:07 PM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11206818
RE: Evolution 58cc two broken rings
There are no separate liners in the cylinder head. The cylinder is a single unit. I tend to agree with the suggestion that it may have to do with heating. MVVS (who make those engines) also recommend 32:1 oil for the first gallon or so. I'm not suggesting the 40:1 ratio was the culprit but it's a good idea to follow manufacturer's recommendations upfront. These are powerful engines which makes it even more important to ensure there is adequate cooling and lubrication is sufficient (no lean running and recommended oil ratio)
Posted on: 7/31/2012 9:49 PM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11176778
RE: 26 gas16/8 or 17/10 prop
[quote]ORIGINAL: jjoos99 Starts real easy. No choke needed with this one. Jeff [/quote] Hi Jeff, That comment leads me to believe you might have the engine too rich (low needle at least) Apart from your friends home made muffler, that is another area that may well cost you power output
Posted on: 7/21/2012 11:03 PM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11164145
RE: 26 gas16/8 or 17/10 prop
Jeff, Even though I suspect a 26cc might be marginal in a relatively draggy plane like a Decathlon of this size, you should get some decent RPM from your engine with a 16x8 prop. One of the most common mistakes made are using restrictive Pitts mufflers that eat up a lot of power, especially static RPM. What muffler do you have on your engine? MVVS have a rather large side muffler (3270) A properly tuned 26cc with a Mejzlik 16x8 (or 18x6) should give you high-7,000 static rpm with that muffler. Expect to lose several hundred RPM from that with a tight Pitts muffler You seem to get best performance from this engine when you prop it light, or in the high 7k rpm range Here is the reported performance for this engine: http://www.mvvs-australia.com.au/gasengines.htm#MVVS_26_IFS/RC Second thing to consider is tuning Have you peak tuned the engine on both needles? I hope this helps a bit.
Posted on: 7/21/2012 12:53 PM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11163690
RE: Eneloop batteries for ignition?
[quote]ORIGINAL: WRK Anyone using Eneloop batteries for ignition? Wonder how these work for Ign and also wondering if they are good enough for flight packs? [/quote] I use Eneloop packs almost exclusively on my ignitions. I like the long charge retention (>80% pr year) and they are easy to manage in low current draw situations. For 50cc and smaller, I also use them for flight packs but most of the time use two separate packs, each connected into separate ports on the receiver. I don't know the availability of them in the US but here in Australia, you can buy individual cells with solder lugs on them which makes it cheap and easy to make up your own packs.
Posted on: 7/20/2012 1:15 PM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11162730
RE: Where are the 40cc Gas Engines???
[quote]ORIGINAL: earlwb In my opinion the 40cc engine displacement size is being squeezed out by the 35cc,36cc engine on the lower end and the 50cc, 55cc, 56cc and 60cc engines on the other side. A 40cc engine tends to weigh about the same as a 50cc engine too. Then the 35cc size engines tend to have about the same if not better performance than a 40cc engine has too. So it makes it tough to choose one nowadays. Fortunately there are still a few 40cc size engines around, but I expect them to all but disappear in the next couple of years. [/quote] This certainly used to hold true where for example the old JC Engines 40cc was basically a downsized 50cc (53cc) but weighed pretty much the same. These days, there are a few offerings of true 40cc as mentioned above in this thread. Weight-wise, it varies greatly. The MVVS 40cc (beam mounted) mentioned in a previous post weighs 1,451gram (without ignition while the 50cc weighs 1,560grams and the 30cc 930grams I personally have a 40cc installed in a 96" Rearwin Speedster that I use for aero towing and have found towing 5 - 6m gliders no problem with that combination (on a 22x8 Mejzlik prop and stock muffler) The tow plane weighs a tad over 7Kg In comparison, the 30cc mentioned likes 18x10 props, the 40cc likes 22x10 props and the 50cc works well on 23x10 props
Posted on: 7/11/2012 3:02 PM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11151758
RE: Taylorcraft crash
In the first place, I cannot see why this thread is in this forum ...... it's the Gas Engines forum, not the "Wing Bolts Forum" or "Let's Beat up Horizon Hobbies Forum" ..... Secondly, I have personally had both the H9 Taylorcrafts and both have been quite solid planes which I have used for some reasonably advanced aerobatics without any problems. Regardless, I would never fly a new plane without checking some basic points like wing attachments etc
Posted on: 7/4/2012 10:34 PM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11143449
RE: ZENOAH G26 BACKFIRING
[quote]ORIGINAL: karolh Backfiring is usually an indicator of incorrect timing or an ignition problem. What size ignition battery are you using and have you checked to make sure that is fully charged, as the older stock Zenoah ignitions are pretty power hungry and that first engine run might have depleted the battery to the point that it will not power the ignition. Karol [/quote] +1 Also - from memory, the G26 has a keyed hub making itr highly unlikely it has "slipped"
Posted on: 6/26/2012 8:29 PM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11133289
RE: BEST 50cc CHINA ENGINE RIGHT NOW??
[quote]ORIGINAL: GerKonig Many, many sales are controlled by our government (more than you can imagine) and have to be cleared, for example ATC systems. Most of South America has out ATC systems, but the contracts have to be authorized by our government before a sale is made. Yes, the foreign country makes the RFP, the DC respond with offers, but each offer states that the approval of the US government is needed before anything is exported. And yes the papers require the signatures all the way up to the Secretary of State (at least tho ones I worked on). Things are a bit more complicated than some plain folks can imagine. And no, it is not a Republican or Democrat thing. I started in the George Shultz era, so, that is RR times:-) and had all administrations and many entities since as clients... So when you say ''Great NS policy'' well, you are wrong if you mean this in a ironic way, as it works every day of the week:-) Gerry [/quote] Mate, this was a home PC for Christ's sake...., designed and built in Taiwan, imported to the US and sold in the US but I had to promise never to show it to the Taiwanese ....... God love us ..... [:D] Anyhow, I guess this thread is about Chinese 50cc engines, not some beaurocratic madness
Posted on: 6/26/2012 7:58 PM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11133249
RE: BEST 50cc CHINA ENGINE RIGHT NOW??
[quote]ORIGINAL: Truckracer Yup .... there ya go! I remember when there were tight controls on exports of technology to China and other less than friendly countries .... I believe that all changed during the Clinton administration. Now the door is pretty much wide open. [/quote] Yeah, you gotta love it Import bits from Taiwan and ban it from ever being shown to or shipped back to the Taiwanese Great National Security policy [:)]
Posted on: 6/26/2012 5:28 PM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11133054
RE: BEST 50cc CHINA ENGINE RIGHT NOW??
A good many years ago when I bought my first decent computer (a 386), I ordered it from a Chinese fella in Los Angeles. Before I could receive it, I had to sign a dossier of papers where I undertook never to ship it to any of a long list of countries. At the top of the list were the old USSR countries, China, Taiwan etc etc. I couldn't even show it to anyone from any of those countries. Guess what, the system board and several other components were made in Taiwan and even had that fact printed on it. [:)] Guess I'm somewhat cynical on all this nonsense.
Posted on: 6/26/2012 3:43 PM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11132949
RE: BEST 50cc CHINA ENGINE RIGHT NOW??
[quote]ORIGINAL: MTK Truckracer I've seen your posts for a long time now and I find them to be thoughtful and experienced.... BUT you know what they say about wrestling a pig in mud? I get the impression from these two that no matter what you say they'll try to stick it to you.... Enough of this foolishness [/quote] +1
Posted on: 6/23/2012 12:27 PM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11128908
RE: RCexl ignition to Evolution/MVVS engines
Milton, A smart setup you have there. Can I suggest a slight mod though, i see the elongated holes in the bracket have the bolts through the opposite ends. A slight mod to have both at the same end of the slots and you can adjust the timing back and forth by a few degrees. I like your work on this
Posted on: 6/20/2012 1:28 PM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11125490
RE: How to remove hub MVVS or Evolution 58 engine
groran, The prop shaft is screwed in as per the attached exploded view I hope this helps
Posted on: 6/9/2012 11:48 AM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11112456
RE: mintor engines
[quote]ORIGINAL: captinjohn  Mintor engines Mintor engines Mintor engines Mintor engines  Mintor engines  Mintor engines Mintor engines Mintor engines Mintor engines Mintor engines Mintor engines Mintor engines Mintor engines Mintor engines Mintor engines [/quote] Hi John, Did you mean to say "Mintor engines"? :) Sorry to sidetrack the thread. Guilty as charged your honour :)
Posted on: 5/16/2012 3:45 PM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11083498
RE: mintor engines
Hi Matt, My estimate is the starter adds approximately 250 grams to the weight of the engine. I need to weigh one to give you the exact weight though
Posted on: 5/16/2012 12:10 PM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11083234
RE: mintor engines
[quote]ORIGINAL: skip1320 When are starters gonna be available as option on all engines! [/quote] Tooting my own horn here a bit :) http://www.mvvs-australia.com.au/news.htm
Posted on: 5/15/2012 11:41 PM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11082585
RE: Your list of hightest quality engines?
Interesting thread indeed and most interesting for the fact that it hasn't been the usual magnet for dealers to come out with the usual "my brand is best" Banter aside, claiming that one "brand" is better than another is highly subjective and should probably be seen as such. Even the most touted manufacturers have come out with duds and the less respected ones have made decent engines. My personal view is that the "best engine" is one we gain confidence in after a while for trouble free and reliable service. For me, it is one of a pair of G62 Lite that I bought from Ralph Cunningham and now powers my Extra 300 flawlessly
Posted on: 5/12/2012 12:53 AM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11077264
RE: TF GS P47 Build - yeah another bloody one!!
[quote]ORIGINAL: Tseres Nice looking antenna. Anxious to see how you make it removable. [/quote] Hacksaw? :)
Posted on: 5/6/2012 2:28 AM by Author "apalsson"
in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11070065
RE: TF GS P47 Build - yeah another bloody one!!
Great workmanship Pete!
Posted on: 5/5/2012 1:56 AM by Author "apalsson"
in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11069077
RE: Looking for new engines
[quote]ORIGINAL: AJsToyz I just looked up,the plane, it calls for 17cc-20cc gas engines. A pair of 30's might be a little over kill. [/quote] I tend to agree. A vastly overpowered twin can be hard to handle too.
Posted on: 5/4/2012 1:07 PM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11068487
RE: Looking for new engines
Here are specs for the 40cc from MVVS http://www.mvvs-australia.com.au/gasengines.htm#MVVS_40cc_IFS/RC These specs should be similar to the Evolution engines (40cc) from Horizon The 35cc has been discontinued and the next one down is a 30cc that works well on. 2 blade 18x10
Posted on: 5/4/2012 12:41 PM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11068463
RE: TF GS P47 Build - yeah another bloody one!!
[quote]ORIGINAL: Peter_OZ thanks mate. flick me that prop price list when you get a moment? Did that carb get away? [/quote] Carb should be with you by now. Hit the post last Monday
Posted on: 5/3/2012 12:57 PM by Author "apalsson"
in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11067082
RE: TF GS P47 Build - yeah another bloody one!!
[quote]ORIGINAL: Peter_OZ well at least I now know how to spell Mejzlik!! [:D] [/quote] Good man Pete ! :)
Posted on: 5/2/2012 9:19 PM by Author "apalsson"
in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11066330
RE: TF GS P47 Build - yeah another bloody one!!
Steff, I like the setup in your Zero and how you oriented the engine I have the MVVS80cc in mine. Works well with a 3-blade 26x10. These are very nice flying planes! Planning to swap it out for the 80cc version with a built in starter!
Posted on: 5/2/2012 8:17 PM by Author "apalsson"
in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11066260
RE: DLE 55 Can a timing change or new ig. help the low end burble?
Rhino, if you set your engine for "fast idle" and then gradually lean the low needle, you will see the RPM gradually increase. Tune for max RPM (without touching the throttle) and then back off by some 1/8 turn. After that, tune for max RPM with the high needle at full throttle and again, back off some 1/8 turn after finding the max RPM point. This should minimize the burble but probably won't completely eliminate it. Just make sure the engine is at full operating temperature when you tune it.
Posted on: 4/29/2012 2:23 AM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11060913
RE: RCGF 15
[quote]ORIGINAL: dirtybird I bought an RCGF 15 from the local distributor. After a few tries I got it started but it immediately got very hot so I shut it down. It was very hard to turn over so I decided to disassemble it and see what happened. The bottom end was full of black crud. I cleaned it out and it seems to be a lot better. I will try it again tomorrow. They don't lube it at the factory with graphite do they? [/quote] These are probably aluminum deposits. A common problem in these engines is the crank rubbing up against the back cover. Loosen the back cover bolts and if the engine spins freely, the end cap on the crank shaft hasn't been fitted properly and is rubbing. Easy to fix with either Loctite 609 or in extreme cases, a spot of Tig weld
Posted on: 4/29/2012 2:01 AM by Author "apalsson"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11060903
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