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RE: RCGF 20cc gas engine on a 63" Profile Yak-54 - 5/11/2009 2:53 AM   
WheelPantz


 

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Status: offline 		Haven't yet, still workin on it. Tryin' to finish up some winter projects first. Is the 20cc engine physically smaller than the 26cc? Still tryin to decide between 20cc or 26cc.

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RE: RCGF 20cc gas engine on a 63" Profile Yak-54 - 5/11/2009 3:50 AM   
T3beatz



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Status: offline 		The 20cc is a little smaller... I was looking at the MLD 28cc engine from Cermark it weighs about the same as the 20cc and the 26cc but has more power. If I had to do it over again I would go with a light 26/28cc gas engine for the extra power. Don't get me wrong the 20cc engine is a good one thats on par with a lot of other 26cc engines, but the 26cc engine will spin a bigger prop for this profile.

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RE: RCGF 20cc gas engine on a 63" Profile Yak-54 - 5/11/2009 4:41 AM   
terrymf


 

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Status: offline 		Had a great day flyin the cedar hobby yak profile..pictures and video comming up later tonight...stay tuned!! LOL

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RE: RCGF 20cc gas engine on a 63" Profile Yak-54 - 5/11/2009 6:27 AM   
David3658


 

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Status: offline 		Cool deal. I hope to have mine ready for next weekend I will let you all know how the CRRC 26 does.

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RE: RCGF 20cc gas engine on a 63" Profile Yak-54 - 5/11/2009 7:02 AM   
terrymf


 

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Status: offline 		Ok here is the skinny..

Cedar Hobby profile yak
Super Tigre g-90 gas engine Apc 15x4w prop
hitech 645 mg on ailerons..(soon to be all the way around...had tower pro 995's and one burned out before first fight)
Tower pro 996 on rudder and elevator..(not for long...rudder fludders at very slow speed)
futaba 7c fasst 2.4 tx and 7channel rx seperate batteries for rx and ignition

wheels from senior telemaster..we fly in a Texas cow pasture
I did use the wing bolt idea and landing gear idea from C - n - B

Had some really bad interference due to a bad switch.. and the Ch ignition came apart at the weld on the spark plug connection...kinda lit up my flying buddy..

dont let anyone tell you that 2.4 cant be interfered with...its hard but can be done.

all up weight 7 3/4 pounds...
Flies great but I had to go really slow due to rudder flutter...(poor servo hold) looked like a guppy trying to outrun a shark!!!

The landing gear that I mentioned earlier in this thread saved me on a dead stik landing (fuel clunk came loose...never had that happen before)...it flexed on a hard bounce but kept the rest of the plane from hitting the ground...the standard LG would have collapsed. this one went right back into shape and is ready for another flight.

Haveing a blast so far...it is worth the trouble

Here are some pictures of it and my buddys extreme edge 540..

vid is uploading on youtube now..I will ad a link when it gets done..

Ok vid is here....http://www.youtube.com/watch?v=M4lhKW7CUTU
it is short cause we just noticed the rudder flutter but you will get the idea...more vids to come

flies easy lands EASY and so on and so on!!
I'm looking forward to many more fun flights after fixing the bugs...



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RE: RCGF 20cc gas engine on a 63" Profile Yak-54 - 5/11/2009 7:41 AM   
T3beatz



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Status: offline 		Nice! Its a big profile, lots of wing area, it just floats around. for 125.00 and hour or two of mods its fun once you get it finished. You save tones of money over other profiles in its size range.

went out today with mine also, last time I was flying it, I landed on a shed and didn't throttle down and off it went right into the tree behind it! The plane it fine little glue here and there and off it goes. its a strong profile. About 2 or three other guys at my field just got one.

Oh yeah, sorry to hear about your experiances with the cheapo servos, I still have mine. they never burned out, but the didn't center all that well either. I use them as back ups for my back ups!LOL

T.j.

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RE: RCGF 20cc gas engine on a 63" Profile Yak-54 - 5/11/2009 8:17 AM   
terrymf


 

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Status: offline 		Its all good...
Having a ball and thats what its all about..

Looking forward to seeing David3658's with the crrc 26cc...that sounds like a winner.

I know that I could add a bigger motor...got loads of wing area...I could fly around at 1/4 throttle and it looked like an airliner.
It will climb at 1/2 throttle with the little ST g-90

I flew 5 times and probubly spent .50 cents on fuel..gotta love that. There was some cleanup as I am running it very rich for now. But that wont be for much longer..still only took 4 paper towels and some simple green to clean up...NICE.

The wing bolt held steady as a rock...a fantastic upgrade to the original. Still haven't installed the anti-rotation pin but the tabs are there for now.

HEY TJ..when you figure out how to install a smoke system let me know...LOL I bet there is a way.

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RE: RCGF 20cc gas engine on a 63" Profile Yak-54 - 5/11/2009 8:46 AM   
T3beatz



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Status: offline 		Yeah, the fuel savings is great! and not having to lug all the glow equipment to start it is even better. I had to clean it up after the first gallon or so (still not as hard as glow), but now its very minimal.

actually I have a smoke system laying around It wouldn't be hard. Just a little more weight and a few more leads to connect. It wouldn't be good for that High performance (low weight) that some guys look for but, for the sport flyer and head turner it would be great! you could always just make it simple to remove for those 3d flights.

I think I could come up with a quick way of doing it. You would just need a few plugs for the lines you disconnect, I would put the smoke pump in the other wing and run the lines out the front near the wing root. Then attach one to the smoke tank line, and the other to the muffler line, only thing needed are Unions,one way valves, filters... Once done for the day just disconnect them and plug the lines with fuel plugs. The only lead running through the wing would be the signal one. I run two switches now, so I would just Y the power from the ignition switch. I also would run a A123 battery for it, I don't know how many amps my NiMH can put out, especially running the servos, ignition,RX, and smoke system.

I have a couple 6oz and 8oz tanks that would be good for about 2mins of smoke.

http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXG847&P=0

http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXG848&P=0

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RE: RCGF 20cc gas engine on a 63" Profile Yak-54 - 5/12/2009 2:46 AM   
WheelPantz


 

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Status: offline 		Does the airframe allow the extra prop size or would you have too modify landing gear to get a 18x6 to fit. I was leaning toward the MLD 28, mainly for future use on other airframes maybe the 20cc wouldn't be big enough for. But don't want to be so big it's not usefull. With the 20cc can you hover close to half throttle and what prop size are you guys using? I have the Golden Eagle Talon profile with a DL 50, and I love it, also wanted something a little smaller wingspan wise, but with close the same power to weight ratio. Thanks for any deciding help!




quote:

ORIGINAL: T3beatz

The 20cc is a little smaller... I was looking at the MLD 28cc engine from Cermark it weighs about the same as the 20cc and the 26cc but has more power. If I had to do it over again I would go with a light 26/28cc gas engine for the extra power. Don't get me wrong the 20cc engine is a good one thats on par with a lot of other 26cc engines, but the 26cc engine will spin a bigger prop for this profile.



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RE: RCGF 20cc gas engine on a 63" Profile Yak-54 - 5/12/2009 3:18 AM   
T3beatz



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Status: offline 		You would want to go with the 28cc for that extra power. With the 20cc and the stock plane (about 7.5lbs auw) I hover a few clicks over 1/2 throttle with a linear throttle curve, my pull out is adequate for me but for you with the DL/Talon combo it would be a step down. I could fit a 17x4 (its what I use) with the standard gear (I now use dubro gear heaver but about the same size as the stock), and thats as far as I would go. You would have to upgrade to the tetherites from OMP. http://www.ohiomodelplanes.com/tetherite/

T.J.

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RE: RCGF 20cc gas engine on a 63" Profile Yak-54 - 5/12/2009 3:24 AM   
T3beatz



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Status: offline 		BTW, Is there a way to change the name of a thread? I was going to add Cedar Hobbies to this one so people would know what profile I was talking about...

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RE: RCGF 20cc gas engine on a 63" Profile Yak-54 - 5/12/2009 4:11 AM   
terrymf


 

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Status: offline 		I second the motion of useing tetherites landing gear...

I'm not real sure what kind mine is but it looks a lot like the tetherites from OMP.
saved the front of my profile just yesterday...plain aluminum would have cratered and smashed the nose of the plane into the ground.
Instead it acted like a shock absorber and then spang back into shape...all is well. Of course if I had hit the ground much harded it too would have broken.

It's not bullet proof but it helps a lot.

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RE: RCGF 20cc gas engine on a 63" Profile Yak-54 - 5/12/2009 6:46 PM   
WheelPantz


 

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Status: offline 		I like the rear carb on the RCFG 20 and 26 I think. Seems might be easier to hook up throttle servo than the MLD 28 with side carb, not sure. I don't mind a little less power, the DL is a monster in the Talon. I just don't want it to be a dog, can't pull out of hover at all, doesn't have to be a rocket either. What is the power difference between the RCFG 26 and the MLD 28? I have seen the MLD against the SPE 26 and seems like a difference in vertical power, not sure why tho.

rich




quote:

ORIGINAL: T3beatz

You would want to go with the 28cc for that extra power. With the 20cc and the stock plane (about 7.5lbs auw) I hover a few clicks over 1/2 throttle with a linear throttle curve, my pull out is adequate for me but for you with the DL/Talon combo it would be a step down. I could fit a 17x4 (its what I use) with the standard gear (I now use dubro gear heaver but about the same size as the stock), and thats as far as I would go. You would have to upgrade to the tetherites from OMP. http://www.ohiomodelplanes.com/tetherite/

T.J.



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RE: RCGF 20cc gas engine on a 63" Profile Yak-54 - 5/12/2009 7:20 PM   
T3beatz



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Status: offline 		I think they redesigned the MLD28cc for more power, I had one of the spe-26cc engines a while back and the little RCGF 20cc engine I have now is probably equal to it or has more power. I don't think it would be hard to run the throttle link to the MLD if you choose to get it, its not that wide. And the linkage on the carb goes to the inside close to the head. mounting the linkage on the 20cc we had to bend the linkage out in order for it to hook to the servo in the slot. You don't have to mount the servo inside the fuse, You can always make one of the servo racks that holds it horizontal so that the arm sticks out and not down, I use them on my 50cc planes. The MLD is 36oz about the same as the RCGF 20cc engine,but the RCGF line comes with a 2 year warranty (I think I have to go check). I don't know about the MLD28. The price is also about the same.

The RCGF 20cc engine pulls the plane around pretty good, I think its a good combo, I've never had one dead-stick with this engine, with about 35+ flights (I get about 5 or 6 with one 2300mah NiMH before I top it off) again, its not a beast but it pulls the plane out of a hover pretty good. You can see it in one of my videos.

I would like to see this plane with the MLD28 though maybe you can be the first?

http://www.globalcsb.com/spemld-28cc-gas-engine-p-5.html?zenid=m7v4m1c1936f0osi0af04ham71 Its like 230.00 something with shipping.

T.J.

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RE: RCGF 20cc gas engine on a 63" Profile Yak-54 - 5/14/2009 2:28 AM   
terrymf


 

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Status: offline 		I will try this again...post wont go through


Just some extra flying video..no big deal...bad rudder servo kept me going slow and safe.

http://www.youtube.com/watch?v=ht-XDoFWKJs

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RE: RCGF 20cc gas engine on a 63" Profile Yak-54 - 5/14/2009 2:34 AM   
terrymf


 

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Status: offline 		Here is a review of a nice cermark yak with the mld 28cc..
great video near the bottom...seems to have loads of power.

http://www.rcuniverse.com/magazine/article_display.cfm?article_id=1095

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RE: RCGF 20cc gas engine on a 63" Profile Yak-54 - 5/14/2009 2:56 AM   
T3beatz



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Status: offline 		great video Terry, That plane just floats around. The ST 90 seems to have good power also.

That MLD28cc looks like a winner. It was doing pretty good on that 10lb 3oz plane, just imagine what it would be like on an 8lb profile with more wing area! That might be my next engine to try!

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RE: RCGF 20cc gas engine on a 63" Profile Yak-54 - 5/14/2009 2:59 AM   
terrymf


 

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Status: offline 		Sure is tempting isn't it LOL...

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RE: RCGF 20cc gas engine on a 63 - 10/14/2009 4:35 AM   
TooBizzy


 

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Status: offline 		I know this is an old thread....But I'll ask anyway. Does anyone know where I could find one of these Yak 54 Cedar Hobbies Profile's like whats in this thread? I have a 20cc RCGF that needs a home... This Profile looks like a good candidate!

TB

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RE: RCGF 20cc gas engine on a 63 - 10/14/2009 4:57 AM   
terrymf


 

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Status: offline 		toobizzy

I wish I knew!!!!
Been looking for another one myself.
I'm still flying the one I have but wanted another for spare parts.



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RE: RCGF 20cc gas engine on a 63 - 10/14/2009 5:48 AM   
T3beatz



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Status: offline 		Yeah, the best way is to ask the guy who sold them on ebay... I'll do some searching for his name and email and I'll let you know. Thats the way I got him to re-list them the first time.

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RE: RCGF 20cc gas engine on a 63 - 10/14/2009 6:16 AM   
TooBizzy


 

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Status: offline 		Hey guys...Thanks for the quick reply....I've spent several hours looking for one of these and can not find a single lead. Except yours! I have found something comparable. There's just not much out there in this size profile. This is probably the closest I've found....

http://www.texasrcplanes.com/arfkav270ono.html

It has a 62 inch wing and has 984 Square inches of wing area...Though I'd rather have one of the Cedar Hobbies. If you could find any info on it, I'd appreciate it.....

Right now I have the 20cc Mounted in a 63" Extra 330....It only has 713 Square Inches of wing, and I don't think it will last long....Got to keep the speed up on approach or she falls out of the sky like a Jet with a Flameout! I'm already looking for plan "B" for this sweet little engine!

Thanks for your replies....

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RE: RCGF 20cc gas engine on a 63 - 10/14/2009 6:24 AM   
T3beatz



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Status: offline 		I'll let you know what I come up with... theres also this one but it already has an engine made for it... http://www.sdshobby.com/katana-63-26cc-plane-gf26iv2-26cc-engine-combo-p-1022.html

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RE: RCGF 20cc gas engine on a 63 - 10/14/2009 3:01 PM   
TooBizzy


 

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Status: offline 		Yea...I had found that one too, but since I already have the 20cc, I'm looking for a home for it. I've ordered from Cyclone and haven't had too much trouble with them. But a buddy of mine is having a hard time getting them to ship a plane he has paid for. They tried to ship it and it was returned because the box was too big to make it thru customs?!?!?!? He's been waiting over a month.....

Maybe I'll send for a quote? Never know, the price might be hard to turn down?

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RE: RCGF 20cc gas engine on a 63 - 10/14/2009 3:18 PM   
T3beatz



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Status: offline 		I'm guessing it wouldn't be to hard to convert that katana for the RCGF 20cc. let us know how it goes with cyclone! If its worth it I may just have to get one myself.

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