CRRC GF45i
#1629
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RE: CRRC GF45i
I have noticed after 5 litre of fuel @ 20.1 that the prop has a play when spun / rocked back and forward, I only noticed this when the motor is cool so not sure if it is still there when hot. It still runs well and has good compression. Can anyone let me know if this is a normal, I have two of these engines and the one I have only put a tank through is still tight does not have any play at all
#1630
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RE: CRRC GF45i
I have one that has noticeable play fore and aft cold and hot. Still runs very well, so I will leave well enough alone for now. I may replace the crank brgs. if the play gets noticeably worse.
#1631
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RE: CRRC GF45i
ORIGINAL: paul0367
I have noticed after 5 litre of fuel @ 20.1 that the prop has a play when spun / rocked back and forward, I only noticed this when the motor is cool so not sure if it is still there when hot. It still runs well and has good compression. Can anyone let me know if this is a normal, I have two of these engines and the one I have only put a tank through is still tight does not have any play at all
I have noticed after 5 litre of fuel @ 20.1 that the prop has a play when spun / rocked back and forward, I only noticed this when the motor is cool so not sure if it is still there when hot. It still runs well and has good compression. Can anyone let me know if this is a normal, I have two of these engines and the one I have only put a tank through is still tight does not have any play at all
If you have a B&S 4 stroke mower (and probably lots of other mower engines), go check the play in that. You'll be surprised how much there is.
#1632
RE: CRRC GF45i
On a lot of engines, you would be surprised.... I've noticed 20 to 30 degrees play at top dead center when you have the piston @ TDC according to the degree wheel...
Now, if you have side to side play, that is bad, and you would have to repair.....
I have about 13 gallons of fuel through my GF45i now, and still going strong... no side to side play, and it has noticeable rock (about 22 degrees) as the piston is @ TDC...
nothing to worry about.....
Now, if you have side to side play, that is bad, and you would have to repair.....
I have about 13 gallons of fuel through my GF45i now, and still going strong... no side to side play, and it has noticeable rock (about 22 degrees) as the piston is @ TDC...
nothing to worry about.....
#1633
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RE: CRRC GF45i
ORIGINAL: netdudeuk
Here is a diagram from CRRC and approved for upload to this forum by Yong Xu which shows the mounting hole pitches.
Thanks
Here is a diagram from CRRC and approved for upload to this forum by Yong Xu which shows the mounting hole pitches.
Thanks
thanks,
Bart
#1635
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RE: CRRC GF45i
Hi all, I have the thor 45 which is the same motor as the crrc pro 45. This thing is full of problems and should be taken to the recyclers. I have changed the ignition to a rc excel, and that helped alot.
Now my problem is tuning I get the needles close runs fine on ground, but in the air it acts up. I had the plane flying today and thought all was well Flew for 10 minutes it was running good. Backed off throttle to come into a hover then went to accelerate again and it almost died. ***. So I get out of hover loop around hit throttle and it dies like it is lean. So I land and tweak my gear[:@], bring plane back over to stand fires right back up and runs fine. ***, I am done with this thing. complete junk. My dle's and my rcgf's run superb. This motor is a nightmare. If I still use it it will be on a plane I dont care about.
End of rant, Goodluck.
Now my problem is tuning I get the needles close runs fine on ground, but in the air it acts up. I had the plane flying today and thought all was well Flew for 10 minutes it was running good. Backed off throttle to come into a hover then went to accelerate again and it almost died. ***. So I get out of hover loop around hit throttle and it dies like it is lean. So I land and tweak my gear[:@], bring plane back over to stand fires right back up and runs fine. ***, I am done with this thing. complete junk. My dle's and my rcgf's run superb. This motor is a nightmare. If I still use it it will be on a plane I dont care about.
End of rant, Goodluck.
#1636
RE: CRRC GF45i
I know what you mean......
I too went to an RCExcl ignition on the GF45i and it helped 50 times over!
mines still running pretty reliable at the present time....
but also it's on a plane that is disposable.....
an 82" corroplast spad aircraft that I designed.....
I too went to an RCExcl ignition on the GF45i and it helped 50 times over!
mines still running pretty reliable at the present time....
but also it's on a plane that is disposable.....
an 82" corroplast spad aircraft that I designed.....
#1638
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RE: CRRC GF45i
Well I changed the carb, and she runs like a top. I cant believe after all the work, sweat, and money I finally got this beer can running good. The metal manifold was warped really bad, so I put that on some glass with 400 grit paper to straighten it out. tore the whole motor down, and re sealed everything. Threw a smaller carb on and she runs like a top now.
Perfect transition, and top end is great. After all the money I threw at this thing I damn near could of bought a DA. I will give some tach numbers after she breaks in a little more.
Perfect transition, and top end is great. After all the money I threw at this thing I damn near could of bought a DA. I will give some tach numbers after she breaks in a little more.
#1641
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RE: CRRC GF45i
Lol, how did you guess. Thankyou so much for the pointer Jodi. She runs like a top now. I was searching through all my stuff, and found a good WT805 laying around.
#1643
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RE: CRRC GF45i
Well I did some taching today. I have maybe a half gallon through it since I fixed it. With a 20x8 top flite, I got 7500 through the stock muffler. Not to bad, I think there might be a little more in her though.
#1645
Join Date: Mar 2007
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RE: CRRC GF45i
Hi,
I have been having a similar nightmare with my Thor 45cc. Runs great on the ground but does not run well in the air. It will not run at full revs unless I'm climbing / inverted. Tried most of the advice written in these pages to no avial. Last ditch attempt is to replace the carb but not sure I can be cope with another false dawn. Have you seen an improvement in the air with the new carb?
Thanks,
John
I have been having a similar nightmare with my Thor 45cc. Runs great on the ground but does not run well in the air. It will not run at full revs unless I'm climbing / inverted. Tried most of the advice written in these pages to no avial. Last ditch attempt is to replace the carb but not sure I can be cope with another false dawn. Have you seen an improvement in the air with the new carb?
Thanks,
John