Aluminum servo arms too thick?
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Aluminum servo arms too thick?
Hello all...
I have the futaba aluminum servo arms that are on my jet. They're about an inch long and for some reason the sullivan golden clevises that are for 4-40 won't close enough to put the little keeper clip on? I've resorted to grinding down about 1/32 down off the arm... basically cleaned off the anodizing to get to bare metal and now the keepers go on. Is this safe? They still seem strong, but I'd hate to lose a jet cause the servo arms are fatigued? What metal servo arms are guys using w/ the sullivan gloden type 4-40 clevises? The stock FeiBao ones were too cheap and bent really easy! Thanks
Z
I have the futaba aluminum servo arms that are on my jet. They're about an inch long and for some reason the sullivan golden clevises that are for 4-40 won't close enough to put the little keeper clip on? I've resorted to grinding down about 1/32 down off the arm... basically cleaned off the anodizing to get to bare metal and now the keepers go on. Is this safe? They still seem strong, but I'd hate to lose a jet cause the servo arms are fatigued? What metal servo arms are guys using w/ the sullivan gloden type 4-40 clevises? The stock FeiBao ones were too cheap and bent really easy! Thanks
Z
#4
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RE: Aluminum servo arms too thick?
I use the futaba metal arms on everything. do my best to avoid clevi (is that plural for clevis) Ball links are much more secure, however you may have to cut the hatch covers wider since they leave a bigger foot print.
My buddy has some hardware on his tomahawk futura that is SWEET. Little metal clevis with a bolt, very nice.
My buddy has some hardware on his tomahawk futura that is SWEET. Little metal clevis with a bolt, very nice.
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RE: Aluminum servo arms too thick?
Thanks guys... I figure the grinding down a little bit would be ok ;-)
For what it's worth, I've never had any problems with the Sullivan golden clevises and I've seen dozens of RC Jet guys' use them with no problems...
Z
For what it's worth, I've never had any problems with the Sullivan golden clevises and I've seen dozens of RC Jet guys' use them with no problems...
Z
#6
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RE: Aluminum servo arms too thick?
Jamie,
You are fine. The MOST important part is to ensure the clip is installed which you are doing. There was a big thread where a guy lost a jet because of one of these clevises braking. Turns out he did not use the clip I think for the reason you have had to grid down the arm. Sullivan stepped up and did a bunch of testing to verify and posted the results. There is nothing wrong with these clevises if applied properly.
PaulD
You are fine. The MOST important part is to ensure the clip is installed which you are doing. There was a big thread where a guy lost a jet because of one of these clevises braking. Turns out he did not use the clip I think for the reason you have had to grid down the arm. Sullivan stepped up and did a bunch of testing to verify and posted the results. There is nothing wrong with these clevises if applied properly.
PaulD
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RE: Aluminum servo arms too thick?
ORIGINAL: hooker53
Jamie. I file mine if I go that way but don't grind them till they get hot. You can make them soft by heating them up to much.
Jamie. I file mine if I go that way but don't grind them till they get hot. You can make them soft by heating them up to much.
Z
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RE: Aluminum servo arms too thick?
ORIGINAL: jzuniga
Hello all...
I have the futaba aluminum servo arms that are on my jet. They're about an inch long and for some reason the sullivan golden clevises that are for 4-40 won't close enough to put the little keeper clip on? I've resorted to grinding down about 1/32 down off the arm... basically cleaned off the anodizing to get to bare metal and now the keepers go on. Is this safe? They still seem strong, but I'd hate to lose a jet cause the servo arms are fatigued? What metal servo arms are guys using w/ the sullivan gloden type 4-40 clevises? The stock FeiBao ones were too cheap and bent really easy! Thanks
Z
Hello all...
I have the futaba aluminum servo arms that are on my jet. They're about an inch long and for some reason the sullivan golden clevises that are for 4-40 won't close enough to put the little keeper clip on? I've resorted to grinding down about 1/32 down off the arm... basically cleaned off the anodizing to get to bare metal and now the keepers go on. Is this safe? They still seem strong, but I'd hate to lose a jet cause the servo arms are fatigued? What metal servo arms are guys using w/ the sullivan gloden type 4-40 clevises? The stock FeiBao ones were too cheap and bent really easy! Thanks
Z
#14
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RE: Aluminum servo arms too thick?
On the Futaba servo arms the ones that are measured in inchs are the thick ones which are .122 thickness. The Metric servo arms are thinner at .083 thickness. Don't know why there is a difference between them. I always buy the metric ones, the clevis will fit these without any problems.
#15
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RE: Aluminum servo arms too thick?
ORIGINAL: rcand
If you need a metal servo arm for strength, then you should use a quality ball link. A friend of mine just had the pin in a Sullivan clevis break inside of the hole in a horn on an aileron. Luckily saw something odd when it was on the grounds before flying.
ORIGINAL: jzuniga
Hello all...
I have the futaba aluminum servo arms that are on my jet. They're about an inch long and for some reason the sullivan golden clevises that are for 4-40 won't close enough to put the little keeper clip on? I've resorted to grinding down about 1/32 down off the arm... basically cleaned off the anodizing to get to bare metal and now the keepers go on. Is this safe? They still seem strong, but I'd hate to lose a jet cause the servo arms are fatigued? What metal servo arms are guys using w/ the sullivan gloden type 4-40 clevises? The stock FeiBao ones were too cheap and bent really easy! Thanks
Z
Hello all...
I have the futaba aluminum servo arms that are on my jet. They're about an inch long and for some reason the sullivan golden clevises that are for 4-40 won't close enough to put the little keeper clip on? I've resorted to grinding down about 1/32 down off the arm... basically cleaned off the anodizing to get to bare metal and now the keepers go on. Is this safe? They still seem strong, but I'd hate to lose a jet cause the servo arms are fatigued? What metal servo arms are guys using w/ the sullivan gloden type 4-40 clevises? The stock FeiBao ones were too cheap and bent really easy! Thanks
Z
Then he didnt use the hardware correctly or maintain his equipment. Go READ the thread posted in this thread. You will see how strong those sullivan golden clevis are!!!
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RE: Aluminum servo arms too thick?
I use a lot of these in the planes that I build. Never had any problems with them.
I can't get the photo to up-load so here is the link.
http://www.swbmfg.com/products/Futab...or-Clevis.html
I can't get the photo to up-load so here is the link.
http://www.swbmfg.com/products/Futab...or-Clevis.html
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RE: Aluminum servo arms too thick?
ORIGINAL: Bill Hatcher
I use a lot of these in the planes that I build. Never had any problems with them.
I can't get the photo to up-load so here is the link.
http://www.swbmfg.com/products/Futab...or-Clevis.html
I use a lot of these in the planes that I build. Never had any problems with them.
I can't get the photo to up-load so here is the link.
http://www.swbmfg.com/products/Futab...or-Clevis.html
Z
#18
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RE: Aluminum servo arms too thick?
ORIGINAL: essyou35
Usually, when I use metal servo arms I also use ball links. I cannot recommend clevises on a jet's control surface. I have had the little pins in the middle break off. With that said, I am sure it will be fine but just my .02
Usually, when I use metal servo arms I also use ball links. I cannot recommend clevises on a jet's control surface. I have had the little pins in the middle break off. With that said, I am sure it will be fine but just my .02
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RE: Aluminum servo arms too thick?
ORIGINAL: Bill Hatcher
The arms from SWB come with the Dubro Plastic clevis but you can use the sullivan as well.
The arms from SWB come with the Dubro Plastic clevis but you can use the sullivan as well.
Z
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RE: Aluminum servo arms too thick?
Re. "Bloating Bob's" comment about metal swiveling on metal... No problem here, as the servo arm is Aluminum and the clevis pin is Steel. The Aluminum is softer and will not cause the clevis pin to gall or seize.
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RE: Aluminum servo arms too thick?
ORIGINAL: airraptor
Then he didnt use the hardware correctly or maintain his equipment. Go READ the thread posted in this thread. You will see how strong those sullivan golden clevis are!!!
ORIGINAL: rcand
If you need a metal servo arm for strength, then you should use a quality ball link. A friend of mine just had the pin in a Sullivan clevis break inside of the hole in a horn on an aileron. Luckily saw something odd when it was on the grounds before flying.
ORIGINAL: jzuniga
Hello all...
I have the futaba aluminum servo arms that are on my jet. They're about an inch long and for some reason the sullivan golden clevises that are for 4-40 won't close enough to put the little keeper clip on? I've resorted to grinding down about 1/32 down off the arm... basically cleaned off the anodizing to get to bare metal and now the keepers go on. Is this safe? They still seem strong, but I'd hate to lose a jet cause the servo arms are fatigued? What metal servo arms are guys using w/ the sullivan gloden type 4-40 clevises? The stock FeiBao ones were too cheap and bent really easy! Thanks
Z
Hello all...
I have the futaba aluminum servo arms that are on my jet. They're about an inch long and for some reason the sullivan golden clevises that are for 4-40 won't close enough to put the little keeper clip on? I've resorted to grinding down about 1/32 down off the arm... basically cleaned off the anodizing to get to bare metal and now the keepers go on. Is this safe? They still seem strong, but I'd hate to lose a jet cause the servo arms are fatigued? What metal servo arms are guys using w/ the sullivan gloden type 4-40 clevises? The stock FeiBao ones were too cheap and bent really easy! Thanks
Z
Then he didnt use the hardware correctly or maintain his equipment. Go READ the thread posted in this thread. You will see how strong those sullivan golden clevis are!!!