RE: Post all your    Gallery
View related threads: (in this forum | in all forums)

Logged in as Guest



Users viewing this topic: none
    Search This Thread  
 
Printable Version

All Forums >> RC Airplanes >> Pattern Universe - RC Pattern Flying >> RC Pattern Flying >> RE: Post all your
Page: <<   < prev  8 9 10 11 12 13 14 15 16 [17]

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
RE: Post all your - 9/4/2012 11:10 PM   
gaRCfield



Posts: 6427
Score: 156
Joined: 5/20/2008
Last Login: 5/18/2013
From: Mason, OH, USA
Status: offline 		So I got a 3517 servo with all plastic gears. I also got a 3517 servo with metal gears. I think the all plastic gear servo is older, but new. This is for dual elevator servos in my new baby.

Is there any risk if I regear them with the same gear set, or should I replace the older servo ? I don't want some slight elevator offset to make my plane fly crooked, LOL

_____________________________

Joe Marri
Enjoying all things aviation.

Hide Signatures

(in reply to gaRCfield)
       Post #: 401

RE: Post all your - 9/5/2012 5:56 AM   
Ryan Smith


 

Posts: 1481
Score: 103
Joined: 3/2/2002
Last Login: 5/18/2013
From: Champaign, IL, USA
Status: offline 		Joe,

Did you buy them new or used? Sounds like one has simply been re-geared; to the best of my recollection, the 3517 has always been a metal gear servo.

Hide Signatures

(in reply to gaRCfield)
       Post #: 402

RE: Post all your - 9/5/2012 1:16 PM   
gaRCfield



Posts: 6427
Score: 156
Joined: 5/20/2008
Last Login: 5/18/2013
From: Mason, OH, USA
Status: offline 		They are both NIP; I think the 3517 started out with nylon gears and over time it got a metal output gear, and finally metal gears. The package is almost identical except for the mg part, and the specs are the same. Should be OK I guess? Not really sure what would happen over time to any components, so hopefully response/speed/etc would be the same.
http://www.servodatabase.com/servo/jr/ds3517

_____________________________

Joe Marri
Enjoying all things aviation.

Hide Signatures

(in reply to Ryan Smith)
       Post #: 403

RE: Post all your - 9/5/2012 5:47 PM   
PatternFlyer



Posts: 1014
Score: 100
Joined: 5/11/2002
Last Login: 5/18/2013
From: Pittsburg, KS, USA
Status: offline 		JR DS3517 actually came out with plastic gear version as Joe mentioned above.

Later, Metal gear versions came out, but DS3517 standard got discontinued.

Reason was the heli guys kept on breaking the gears on 3517.

I have a few of those at home too. Was going to use them on Kyosho Flip, but decided to go with metal gears instead. For use on elevators of Pattern plane should be good.


_____________________________




Hide Signatures

(in reply to gaRCfield)
       Post #: 404

RE: Post all your - 9/8/2012 7:19 AM   
gaRCfield



Posts: 6427
Score: 156
Joined: 5/20/2008
Last Login: 5/18/2013
From: Mason, OH, USA
Status: offline 		what is the right thickness of carbon plate for making motor mounts? This would be bolted or glued to a nose ring and supported in the rear. Is 1/16" too thin?

_____________________________

Joe Marri
Enjoying all things aviation.

Hide Signatures

(in reply to PatternFlyer)
       Post #: 405

RE: Post all your - 9/8/2012 7:41 PM   
woodie



Posts: 924
Score: 100
Joined: 6/11/2002
Last Login: 5/18/2013
From: Placerville, CA, USA
Status: offline 		While carbon plate is very strong, it isn't the lightest composite around, nor the easiest to cut. I prefer 1/8" end grain balsa/carbon laminate (carbon on both sides. Very strong, fairly easy to cut. If you are using the rear support for the Advance, 1/8" end grain/carbon laminate is plenty strong enough. On my Spark (small diameter nose ring), I only use the 1/8" end grain/carbon laminate with no rear support. No issues so far......

Woodie

_____________________________

"In theory there is no difference between theory and practice. In practice there is." Yogi Berra

Hide Signatures

(in reply to gaRCfield)
       Post #: 406

RE: Post all your - 9/8/2012 8:36 PM   
tewalker01


 

Posts: 42
Score: 100
Joined: 9/8/2005
Last Login: 5/18/2013
From: San Jose, CA, USA
Status: offline 		Don,

Interesting, I thought that it was standard practice for front mount inrunners to also have a rear support. I know that the Spark has the total nose of the plane reinforced with carbon fiber cloth. Is this the reason you can use just  a front mount of 1/8" balsa/carbon laminate?

Terry 

Hide Signatures

(in reply to woodie)
       Post #: 407

RE: Post all your - 9/8/2012 11:46 PM   
woodie



Posts: 924
Score: 100
Joined: 6/11/2002
Last Login: 5/18/2013
From: Placerville, CA, USA
Status: offline 		Terry, yes it is common practice to use a rear support for in-runners, however, the Advance (yes, an in-runner) is configured more like an outrunner with a a large base/mounting plate area that goes against the nose ring plate. It is also a small nose ring, the Advance barely fits into the nose so there is not much unsupported area outside the motor mounting plate. The entire nose of the Spark is carbon fibre too.

After I installed the motor, I gave it the ole 'grab a prop blade and pull hard/twist' test (highly calibrated BTW) and nothing moved so I did not install the rear support.

I believe the new Angel Shadow is also set up this way.

Like I said, so far no problems.....

Woodie

_____________________________

"In theory there is no difference between theory and practice. In practice there is." Yogi Berra

Hide Signatures

(in reply to tewalker01)
       Post #: 408

RE: Post all your - 9/8/2012 11:48 PM   
gaRCfield



Posts: 6427
Score: 156
Joined: 5/20/2008
Last Login: 5/18/2013
From: Mason, OH, USA
Status: offline 		I tried the laminated end-grain balsa, had issues with the balsa crushing. I chose carbon to avoid that, to allow for a mount that will be very robust to installing/removing the motor, etc. Even the glassed-ply motor box in my Sebart Wind 110 started to crush a little after many flights and showed signs of fatigue.

I just bought some 1.5mm and 2mm carbon and have some 2.5mm carbon here. It seems to me that the 'commercially available' G10 and carbon mounts are somewhere between 1.5 and 2mm. It would be nice to get away with the 1.5mm. The Advance will be front- and rear supported.

http://www.znline.com/photos.php?source=produits&langue=english%20&cle_data=1324372463&index=0
javascript:popupWindow('http://www.f3aunlimited.com/webstore/index.php?main_page=popup_image&pID=193')

_____________________________

Joe Marri
Enjoying all things aviation.

Hide Signatures

(in reply to tewalker01)
       Post #: 409

RE: Post all your - 9/9/2012 9:22 PM   
gaRCfield



Posts: 6427
Score: 156
Joined: 5/20/2008
Last Login: 5/18/2013
From: Mason, OH, USA
Status: offline 		For pull-pull, I am considering the following cable options - would like to hear your thoughts
1) 7-strand stainless fishing leader, 40lb test, nylon coated
http://www.afwhiseas.com/product-p/c045b-0.htm

2) 49-strand stainless 'knotable' fishing leader, 40lb test, nylon coated (super flexible and resistant to memory/kinking)
http://www.afwhiseas.com/product-p/cm49-40b-a.htm

3) nylon coated kevlar
http://www.yourfavorite_kevlarsupplier.com(ic)

I am nervous about using kevlar - have not used it yet, do not want it to fray/break/creep or whatever - this is my first 2m plane. I do like light weight though!

_____________________________

Joe Marri
Enjoying all things aviation.

Hide Signatures

(in reply to gaRCfield)
       Post #: 410

RE: Post all your - 10/7/2012 3:05 PM   
gaRCfield



Posts: 6427
Score: 156
Joined: 5/20/2008
Last Login: 5/18/2013
From: Mason, OH, USA
Status: offline 		My new toy

Attachments
Click to see fullsize image.
Click for fullsize


_____________________________

Joe Marri
Enjoying all things aviation.

Hide Signatures

(in reply to gaRCfield)
       Post #: 411

RE: Post all your - 10/8/2012 3:53 AM   
MTK



Posts: 3986
Score: 203
Joined: 5/14/2004
Last Login: 5/18/2013
From: Whippany, NJ, USA
Status: offline
quote:

ORIGINAL: Ryan Smith

Joe,

Did you buy them new or used? Sounds like one has simply been re-geared; to the best of my recollection, the 3517 has always been a metal gear servo.

Ryan,

Did you get my answer to your questions?


_____________________________

Regards,
MattK

Hide Signatures

(in reply to Ryan Smith)
       Post #: 412

RE: Post all your - 10/10/2012 4:05 AM   
gaRCfield



Posts: 6427
Score: 156
Joined: 5/20/2008
Last Login: 5/18/2013
From: Mason, OH, USA
Status: offline
quote:

ORIGINAL: MTK


quote:

ORIGINAL: Ryan Smith

Joe,

Did you buy them new or used? Sounds like one has simply been re-geared; to the best of my recollection, the 3517 has always been a metal gear servo.

Ryan,

Did you get my answer to your questions?


I thought Patternflyer covered it above; they are both new servos but from different sources. One must be older but still in package and has all plastic gears.

_____________________________

Joe Marri
Enjoying all things aviation.

Hide Signatures

(in reply to MTK)
       Post #: 413

RE: Post all your - 10/10/2012 1:14 PM   
corch


 

Posts: 252
Score: 101
Joined: 3/9/2010
Last Login: 5/17/2013
From: grand rapids, MI, USA
Status: offline 		THAT'S going to put you over on weight......won't even ponder the dB penalties either

 

_____________________________

Urge Congress to keep common sense in the skies

Hide Signatures

(in reply to gaRCfield)
       Post #: 414

RE: Post all your - 10/11/2012 3:42 AM   
gaRCfield



Posts: 6427
Score: 156
Joined: 5/20/2008
Last Login: 5/18/2013
From: Mason, OH, USA
Status: offline
quote:

ORIGINAL: corch

THAT'S going to put you over on weight......won't even ponder the dB penalties either

 

!

_____________________________

Joe Marri
Enjoying all things aviation.

Hide Signatures

(in reply to corch)
       Post #: 415

RE: Post all your - 1/7/2013 5:23 AM   
gaRCfield



Posts: 6427
Score: 156
Joined: 5/20/2008
Last Login: 5/18/2013
From: Mason, OH, USA
Status: offline 		I ran into Dave Brown in the book store the other day. I had my AMA hoodie on so he said something. I just think that's so cool

_____________________________

Joe Marri
Enjoying all things aviation.

Hide Signatures

(in reply to gaRCfield)
       Post #: 416

RE: Post all your - 3/18/2013 3:39 PM   
gaRCfield



Posts: 6427
Score: 156
Joined: 5/20/2008
Last Login: 5/18/2013
From: Mason, OH, USA
Status: offline 		Can anyone recommend a good building stand?

_____________________________

Joe Marri
Enjoying all things aviation.

Hide Signatures

(in reply to gaRCfield)
       Post #: 417

RE: Post all your - 3/18/2013 5:20 PM   
MTK



Posts: 3986
Score: 203
Joined: 5/14/2004
Last Login: 5/18/2013
From: Whippany, NJ, USA
Status: offline 		Why did your cross grained balsa crush? Did you not use hard points?

I use 1/4" x 5/32" carbon tube hard points. The blind nut is mounted on a donut of 1/8" a/c ply and backs up against the carbon tubing.

I made teflon covered kevlar 10 years ago and am still using this stock today. All cable types need a simple rule followed at the contact points....make sure you round off any hard edges on steel ferrules and threaded rod holes. Kevlar has never failed while ss has....


_____________________________

Regards,
MattK

Hide Signatures

(in reply to gaRCfield)
       Post #: 418

RE: Post all your - 4/22/2013 11:12 PM   
gaRCfield



Posts: 6427
Score: 156
Joined: 5/20/2008
Last Login: 5/18/2013
From: Mason, OH, USA
Status: offline
quote:

ORIGINAL: PatternFlyer

JR DS3517 actually came out with plastic gear version as Joe mentioned above.

Later, Metal gear versions came out, but DS3517 standard got discontinued.

Reason was the heli guys kept on breaking the gears on 3517.

I have a few of those at home too. Was going to use them on Kyosho Flip, but decided to go with metal gears instead. For use on elevators of Pattern plane should be good.


I just went to re-gear the two servos - I got nylon gears for the MG, and a metal output gear for the old 3517. It is easy to remove the nylon output gear, but it leaves behind the bearing and what looks like something else. Don't want to pull to hard - so I put the nylon output gear back on and find it's pretty easy to just spin it around the shaft.

What holds the gears to the pot shaft??

_____________________________

Joe Marri
Enjoying all things aviation.

Hide Signatures

(in reply to PatternFlyer)
       Post #: 419

Page:   <<   < prev  8 9 10 11 12 13 14 15 16 [17]
All Forums >> RC Airplanes >> Pattern Universe - RC Pattern Flying >> RC Pattern Flying >> RE: Post all your
Page: <<   < prev  8 9 10 11 12 13 14 15 16 [17]





Jump to:


 
Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

RC Universe is a service of Internet Brands, Inc. Copyright © 2001-2013.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America


1.516RCU1