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CRRC GF45i

Old 08-16-2005, 12:32 AM
  #26  
RustyTumbles
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Default RE: CRRC GF45i

Cool, I'll use the 1100mAh.

Going to pull the G38 off tonight and get ready for the new motor.
Old 08-16-2005, 05:19 AM
  #27  
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Default RE: CRRC GF45i

What type of kill switch are you using on these motors? I was thinking of just using a servo operated switch between the ignition battery and the ignition unit. Will this work without getting radio interferance?
Old 08-16-2005, 07:28 AM
  #28  
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Default RE: CRRC GF45i

I didn't get into it yet but I think I will shut down mine with the carburetor (close it).
Old 08-16-2005, 04:22 PM
  #29  
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Default RE: CRRC GF45i

Thats fine, but I like to have two ways incase the throttle servo fails or you have to stop it in a hurry. Save you having to fly around for 30 min before you run out of fuel.
Old 08-16-2005, 05:11 PM
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Default RE: CRRC GF45i

You can use kill switch like great planes have or an optic kill switch ([link=http://www.smart-fly.com/]smart-fly[/link])
You can also shut it down with the choke if you will run a servo for it.
Old 08-16-2005, 05:59 PM
  #31  
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Default RE: CRRC GF45i

Yeah I'm not sure exactly what I'll use yet. I'll have a look around and then make a decision. Have used and bigger props on yours yet?
Old 08-16-2005, 06:29 PM
  #32  
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Default RE: CRRC GF45i

Not yet, this weekend I will test a new mixture at 1:33 and more spark plugs.
Old 08-16-2005, 08:49 PM
  #33  
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Default RE: CRRC GF45i

What plugs are you using?

What are the spares like for this engine? Is there replacement ignitions, hall sensers etc avialable? Just curious as to what do if something fails......
Old 08-17-2005, 01:36 AM
  #34  
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Default RE: CRRC GF45i

Don`t worry bigsport. The fittings of gf45i can be bought soon in Australia
Old 08-17-2005, 05:23 AM
  #35  
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Default RE: CRRC GF45i

Thanks crrcpro,

Do you know who will be stocking the spares?

Tooly,

I am planning on running fuel at 40:1. Using castrol TTS racing synthetic oil. The motor I am getting has been run for a while on 25:1 klotz synthetic oil. Also crrc pro recomends a 22x8 prop.
Old 08-17-2005, 05:24 AM
  #36  
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Default RE: CRRC GF45i

Oh,

while I think of it, what is the recomended spark plug gap?
Old 08-17-2005, 07:15 AM
  #37  
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Default RE: CRRC GF45i

big sport,

Leave the gap as it comes, unless you have problems.
The original plug I got was Torch BM6A, the second engine that was is stock had something else unknown, I still testing plugs, from my exprience with 2 stroke, Denso are the best for mixture, but I found that the replacement denso didn't work good (tried one hot and cold) because it was with projected tip, this weekend I will try NGK and Champion.
I ran mine with semi synthetic at alsmot 1:20 for more than 3 hours, had to close the low needle 1/4 turn to get a smooth run, I made a new mixture of 1:33, no hurry to 1:40 synthetic yet.
No doubt the this engine need a bigger prop, I follow the manual and bought something smaller than the recommended 20x10, I believe this engine will turn even 22x10 without a problem after 12-20 hours of running.
CRRC-PRO sent me some photos of the engine mount in some models and videos, and I didn't motice any problem with the carburetor hanging against the wind, more than that, one photo show the carburetor mount inverted so the needles are down and the metering plate is against the incoming air.
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Old 08-17-2005, 08:27 AM
  #38  
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Default RE: CRRC GF45i

Here is mine
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Old 08-17-2005, 04:43 PM
  #39  
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Default RE: CRRC GF45i

I guess I won't know if there will be any problems until it is it the air. I will run a 20x10 for a while longer as it hasn't had a lot of run time. I think the motor I'm getting has a champion plug in it at the moment. I do have a NGK in my zenoah, I may try that to and see if there's any difference. I think 40:1 synthetic will be ok, I will just run a little rich for a while. Once the engine has had some time on the model it should be a winner. I cait wait to get it in the air......
Old 08-17-2005, 06:14 PM
  #40  
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Default RE: CRRC GF45i

Once you will finish break in and go down with the oil it will work much smoother, I'm very gald to hear that it can hover the WH at 1/2 throttle with short run time.
My friend have a new ZDZ 50NG and have same problem with the mixture.
Old 08-17-2005, 07:41 PM
  #41  
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Default RE: CRRC GF45i


ORIGINAL: TooLy

Well, I got my new tachometer today and after 3 hours of running I got 9200 rpm with zinger pro 20x8 at 1:25 mixture.

Wow, with that power I'll take a dozen of those. TooLy, I think that tach is made by the same people that make the thrust calculator. This does sound like a very nice alternative in the 40 class, but there's something wrong with those numbers. They only advertise 4.2HP(@9500) for this engine, which is very misleading. It obviously will have significantly less power at its real operating band down in the 7's. airbatic2000 was right, you'd need around 7 HP to reach these RPM's with that prop. TooLy, have you tried taching it again with someone else's tach to see what you come up with? Does anyone else have any numbers on this engine? bigsport, did I miss if you posted numbers?

Thanks.
Old 08-17-2005, 07:52 PM
  #42  
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Default RE: CRRC GF45i

I will tach it again this weekend and let you know.
Old 08-17-2005, 09:21 PM
  #43  
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Default RE: CRRC GF45i

Yeah we recorded 7200rpm with a 20x10 bolly carbon. Keep in mind that this engine hasn't had a lot of run time, so it should turn a 22x8 at around 7k when fully broken in. CRRC pro recomend rpm between 6700-7000 for best power and life.
Old 08-17-2005, 09:42 PM
  #44  
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Default RE: CRRC GF45i

ORIGINAL: TooLy

I will tach it again this weekend and let you know.
Thanks TooLy.

ORIGINAL: bigsport

Yeah we recorded 7200rpm with a 20x10 bolly carbon. Keep in mind that this engine hasn't had a lot of run time, so it should turn a 22x8 at around 7k when fully broken in. CRRC pro recomend rpm between 6700-7000 for best power and life.
Thanks. That all sounds like good data. It looks like it's right in there with other high-end 40's that cost more money. I wonder how it would run on a canister? I'm looking foward to watching the feedback as it gets more widespread use.
Old 08-17-2005, 11:08 PM
  #45  
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Default RE: CRRC GF45i

Hello every one, Ace radio controlled models In Western Austrlaia can supply your CRRC pro GF45I engines for Aus $ 490.00 incl G.S.T + delivery anywhere in Australia Or Overseas export price is AUS $ 445.00 + delivery

We can access spare parts and should have motors and parts available in 1-2 week in september 2005

any questions please email us sales@acercmodels.com

Visit Our website www.acercmodels.com.

[link]http://www.acercmodels.com
Old 08-18-2005, 02:07 AM
  #46  
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Default RE: CRRC GF45i

Thanks ACE,

Now I know who to contact if I need any spares. I'll keep everyone posted as I install the engine, and thoughout the flight testing and tuning.

I think this motor would be even better on a pipe or canister, although you would need to make a custom header for it because I doubt anyone produces one.
Old 08-18-2005, 04:47 AM
  #47  
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Default RE: CRRC GF45i

Header for G-45 should work.
Old 08-18-2005, 05:47 AM
  #48  
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Default RE: CRRC GF45i

I won't be using a pipe or canister anyway, the extra is not designed for it and it wouldn't be worth it on this model anyway.
Old 08-18-2005, 05:59 AM
  #49  
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Default RE: CRRC GF45i

Here's a few pics of the extra the GF45i will be fitted to. Currently still has the Zenoah G38 fitted. I will have to relocate the throttle servo and kill switches once the motor is fitted up.
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Old 08-20-2005, 02:53 AM
  #50  
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Default RE: CRRC GF45i

The G38 is off now, I had to reglue the engine box as it had come loose slightly. I've also installed the ignition switch, can't do anymore until I get the engine and mount it. I pick it up tomorrow (can't wait for that).

Tooly have you tried anymore props on yours yet?

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