RE: CRRC PRO GF26I

RE: CRRC PRO GF26I
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RE: CRRC PRO GF26I - 7/10/2008 2:10:17 PM

mikkeljunker

Posts: 18
Joined: 7/26/2007
From: K�benhavn, DENMARK
Status: offline

Here in denmark we use 98 Octane.
Does anyone have a noise reading with the std. mufler for the crrc26cc?

(in reply to jimcork1)

Post #: 301

RE: CRRC PRO GF26I - 7/11/2008 2:23:08 AM

old git

Posts: 706
Joined: 3/10/2004
From: BelvedereKent, UNITED KINGDOM
Status: offline

I just bought on fleaBay a CRRC GF 216, roughly $210.00 from Japan includung shipping to UK..

It was an impulse buy, I had a spare half day and was wasting it wandering through fleaBay.

Immediately after buying it I found this thread and began to regret my purchase. The thread started with all the problems and poor starting.

You may Imagine just how relieved I was as I went further into the thread and found more positive views about the quality of the engine.

old git - - - - aka John L.

(in reply to mikkeljunker)

Post #: 302

RE: CRRC PRO GF26I - 7/11/2008 6:35:58 AM

Ravivos

Posts: 82
Joined: 8/16/2006
From: Center, ISRAEL
Status: offline

Hi John L.
Same thing happend to me yesturday.
just wonderd through the net and came across this engine,
light trigger finger and i purchased this engine.
started reading this thread and was as bit dissapointed but further reading got me rather satisied.
on the other hand, what is the wort thing that could happen? so you will have a 200$ paper weight on your table... a red paper weight...

(in reply to old git)

Post #: 303

RE: CRRC PRO GF26I - 7/12/2008 8:42:49 PM

Jim Dines

Posts: 1373
Joined: 2/27/2002
From: Keller, TX, USA
Status: online

old git and Ravivos,

The beginnings of this thread were exploring pre production prototypes for evaluation. They found problems. Subsequent posts from other users were from buyers of the production versions, and they seemed well pleased with the result. I am one of them, recently acquired my 26 and ran it just a few days ago. I was impressed with it as I believe you will be, also. I have a plane on the way and should have it flying in 30 days or so. I can hardly wait!

I think you will find you made a good impulse decision.

(in reply to Ravivos)

Post #: 304

RE: CRRC PRO GF26I - 7/14/2008 3:10:09 AM

2robinhood

Posts: 363
Joined: 8/27/2006
From: Egg Harbor City, NJ, USA
Status: offline

I flew mine again today.
Five, 15 minute flights and all was 100% perfect.
9250 rpm at top with a 1950 rpm idle.
Still using the APC 17 X 6
Never a deadstick on this engine for me.
Just ripping up the sky.

(in reply to Jim Dines)

Post #: 305

RE: CRRC PRO GF26I - 7/17/2008 5:18:29 PM

littlera

Posts: 48
Joined: 3/22/2007
From: Advance, NC, USA
Status: offline

Lots of you guys have experience with this GF26I engine by now. I am just ready to purchase one after reading many threads on this and similar displacement engines.

I borrowed a NIB example from a club member to see how if would fit into my cowl. I am starting build on an old Precedent Aeronca Champ (1/4 scale.) I have the Fiberglass Specialties glass cowl (fits Precedent and Nosen kits.) Nice kit by the way, and a shame this line of UK kits is no longer available. Found mine in swap shop at Toledo show 3 or 4 years ago.

My question: The engine will only fit into the confines of the cowl if I remove the velocity stack from the carb. I really don't want to cut out the side of the cowl. I am already going to have to do some surgery to clear the spark plug and its connector, and I would like to limit it to this. There could be some aero effects anyway, breathing through a carb hole on the side of the cowl.

Has anyone done any comparison of performance, fuel spitting, etc. with and without the stack? I would really like to know your results.

Another question: Has anyone had to incorporate a remote vent for the carb diaphragm due to cowl pressure variation from static pressure (either positive or negative pressure - depends on the configuration of the cowl. If so, did you solder to existing hole on diaphragm cover, or drill new hole in center and close original hole at the edge? Did you vent back to inside fuselage or to static port on side of plane? I would be more inclined to go to static source on side of plane, instead of inside plane - you never know if inside plane has static, plus, or minus pressure.

(in reply to 2robinhood)

Post #: 306

RE: CRRC PRO GF26I - 7/17/2008 7:36:41 PM

Jim Dines

Posts: 1373
Joined: 2/27/2002
From: Keller, TX, USA
Status: online

quote:

ORIGINAL: littlera

My question: The engine will only fit into the confines of the cowl if I remove the velocity stack from the carb. I really don't want to cut out the side of the cowl. I am already going to have to do some surgery to clear the spark plug and its connector, and I would like to limit it to this. There could be some aero effects anyway, breathing through a carb hole on the side of the cowl.

Not to worry. Gas engines were running for years before velocity stacks became popular. Sometimes a velocity stack has an effect on performance (as when the carb is exposed to the slipstream) but it's also a marketing tool as it "looks cool". You will need to tune the engine for the cowl environment, but once you do that, the stack is unnecessary.

(in reply to littlera)

Post #: 307

RE: CRRC PRO GF26I - 7/17/2008 8:16:17 PM

littlera

Posts: 48
Joined: 3/22/2007
From: Advance, NC, USA
Status: offline

Thanks for the reply Jim.

I suspected as much, but have limited experience with these carbs. Perhaps the velocity stack can reduce some spitting (some new OS engine designs, such as the 56 alpha, incorporate longer inlet tubes to help reduce this problem.) The inlet tube on the GF26I would appear to be too short to have much beneficial effect on performance due to its relative short length - barely one diameter in length. The bell mouth could theoretically help, but I would guess it doesn't do much aerodynamicall

I think you are right - it just looks cool.

I also noted that if the stack must be removed, the bolts will have to be cut off or replaced with shorter ones.

(in reply to Jim Dines)

Post #: 308

RE: CRRC PRO GF26I - 7/19/2008 4:05:09 PM

mikkeljunker

Posts: 18
Joined: 7/26/2007
From: K�benhavn, DENMARK
Status: offline

Look at my GF26I
Do you think i schould worry?

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(in reply to littlera)

Post #: 309

RE: CRRC PRO GF26I - 7/19/2008 4:14:55 PM

GhostRider32

Posts: 128
Joined: 11/23/2006
From: NE, TX, USA
Status: offline

I would send it back. If the motor came out of the box in that condition and was sold as new, I'd want my money back. That is completely unacceptable for a new engine.

(in reply to mikkeljunker)

Post #: 310

RE: CRRC PRO GF26I - 7/19/2008 4:26:56 PM

Jim Dines

Posts: 1373
Joined: 2/27/2002
From: Keller, TX, USA
Status: online

I think that would worry me, wondering what else might be wrong that is not so apparent? If you bought from a dealer, I would contact them about returning it for an exchange. To me, that engine shows disregard for the customer. It should never have been sold. But what do I know about such things

. I bought mine from a dealer, Paragon RC Models in Canada. They check out the product before they ship it.

Good luck getting this one replaced. I hope you are successful.

(in reply to mikkeljunker)

Post #: 311

RE: CRRC PRO GF26I - 7/19/2008 5:49:27 PM

old git

Posts: 706
Joined: 3/10/2004
From: BelvedereKent, UNITED KINGDOM
Status: offline

quote:

ORIGINAL: jimcork1

100 Octane? This is what is recommended. Just wondering what gas/octane are you using. Of course max we have at the pump is 93. Thanks

I'm under the impression that this has been answered elsewhere in RCU, the lower octane no. fuels seem to have a more volatile and more easily ignited component.

My exerience with restoration of old motorcycles leads me to be careful not to use old fuel unless diluted with fresh fuel. The low octane number fuels seem recommended.

old git - - - - aka John L.

(in reply to jimcork1)

Post #: 312

RE: CRRC PRO GF26I - 7/19/2008 9:50:41 PM

jimcork1

Posts: 934
Joined: 1/29/2002
From: Slidell, LA, USA
Status: offline

quote:

ORIGINAL: old git

quote:

ORIGINAL: jimcork1

100 Octane? This is what is recommended. Just wondering what gas/octane are you using. Of course max we have at the pump is 93. Thanks

I'm under the impression that this has been answered elsewhere in RCU, the lower octane no. fuels seem to have a more volatile and more easily ignited component.

My exerience with restoration of old motorcycles leads me to be careful not to use old fuel unless diluted with fresh fuel. The low octane number fuels seem recommended.

old git - - - - aka John L.

I ran out the last of my 87 octane fuel in my Quadra 52 today. It has been flying / running excellent.

I refilled with 93 octane fuel for the CCRC50 as it specified 100 octane. Now the question? Should I use this fuel in the Q52? and/or the CCRC 50. The Q52 has been easy to start and runs well on 87. Is 93 considered low when 100 is recommended/ or is it high for the Q52?

For the CCRC with bent fins,, it appears to have been dropped and cracks in the fins seem to confirm this. If the engine was dropped I would want an exchange. However consider there is a warranty and the engine will probably run ok as I am sure many of us have crashed and flown engines again. I would also be concerned if it was dropped was the crank bent.?

(in reply to old git)

Post #: 313

RE: CRRC PRO GF26I - 7/20/2008 3:15:29 AM

captinjohn

Posts: 5832
Joined: 1/25/2002
From: Hesperia, MI, USA
Status: online

I would send it back...in a blink of a eye! If they do good business...keep buying other items from them. Capt,n

_____________________________

I never met a engine I did not like!

(in reply to jimcork1)

Post #: 314

RE: CRRC PRO GF26I - 7/20/2008 8:49:16 AM

mikkeljunker

Posts: 18
Joined: 7/26/2007
From: K�benhavn, DENMARK
Status: offline

It came like that out of the box.
I have already takled with the dealer and I have decided to give the engine a try.
It wil get a extra long break in period. I can live with the small bruses as the enginecowl wil cover it up.
I´m alså not so keen on sending the engine all the way back to china.
Mikkel

(in reply to captinjohn)