Fun, Learning, Friendship and Mutual Respect
START  HERE


Unregistered
Go Back   HeliFreak > R/C Helicopter Support > 150 Class Electric Helicopters


150 Class Electric Helicopters 150 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.


Reply
 
Thread Tools Display Modes
Old 02-14-2014, 02:58 PM   #21
Nelsonisms
HF Support
 
Posts: 6,529
 

Join Date: Feb 2013
Location: Austin, TX, USA
Default

Is that Napa like the auto part stores? I tried Googling that part number and came up with nothing.

However, I did learn that the binary representation of 407004 is 1100011010111011100.
__________________
Gaui X5F 6S (VBar), Lynx 450X-L 6S (Ikon), Lynx 300X-L 4S (Ikon), Blade 180CFX 3S (Ikon)
Lumenier QAV400 4S (Vector), Lumenier QAV250 3S (Naze32/CleanFlight), CYE Stingray 500 4S (TG Multi)
AMA Member, HCAM Member
Nelsonisms is offline        Reply With Quote
Old 02-14-2014, 04:09 PM   #22
Hydros27
Registered Users
 
Posts: 687
 

Join Date: Jan 2010
Location: Maple Valley, WA
Default

I had no luck searching that number either. I just measured some o rings when I saw the post. That is the part number of an air conditioning o ring NAPA Auto Parts stocks for us at work. The number on the package is: 407004/A37069. There is no brand name on the package. Our NAPA salesman uses the first half of that part number when he restocks the cabinet so they should be able to help you at a NAPA store. Hope that helps.
Hydros27 is online now        Reply With Quote
Old 02-14-2014, 04:30 PM   #23
Go for it
Registered Users
 

Join Date: Jun 2012
Location: North America
Default

Quote:
Originally Posted by Hydros27 View Post
I had no luck searching that number either. I just measured some o rings when I saw the post. That is the part number of an air conditioning o ring NAPA Auto Parts stocks for us at work. The number on the package is: 407004/A37069. There is no brand name on the package. Our NAPA salesman uses the first half of that part number when he restocks the cabinet so they should be able to help you at a NAPA store. Hope that helps.
I found some red silicone o rings at Oringsandmore. They are the same as the ones we use on the ball links, just bigger.
After mesuring the horns(sorry for the ASA measures but Oringsandmore is an American company) I got:

Horns foot = 7/32

So to be on the safe side( they are only 3.25 for 100) I ordered 3 sizes.

# 08 = 3/16'' or 1/32'' smaller then the horn foot
# 07 = 5/32'' or 1/16" smaller
# 06 = 1/8" or 3/32" smaller

I'll let you know which one I feel is the best. If some of you can't get them I can send you some for the price of postage. We'll see when I get them.
__________________
T-Rex 150 || Blade 180 CFX with µBrain || T-rex 250 pro DFC with Vortex Vx1p || T-Rex 450 PRO DFC || Mcpx BL || Mcpx v2 || Futaba 14SG (KDH-Modul) || DX8
Go for it is offline        Reply With Quote
Old 02-14-2014, 04:47 PM   #24
Nelsonisms
HF Support
 
Posts: 6,529
 

Join Date: Feb 2013
Location: Austin, TX, USA
Default

I found the links for those. Here they are for reference...

# 08 = 3/16'' or 1/32'' smaller then the horn foot
# 07 = 5/32'' or 1/16" smaller
# 06 = 1/8" or 3/32" smaller

I think you're right that one of those should work perfectly. And you'll have 297 o-rings to spare.
__________________
Gaui X5F 6S (VBar), Lynx 450X-L 6S (Ikon), Lynx 300X-L 4S (Ikon), Blade 180CFX 3S (Ikon)
Lumenier QAV400 4S (Vector), Lumenier QAV250 3S (Naze32/CleanFlight), CYE Stingray 500 4S (TG Multi)
AMA Member, HCAM Member
Nelsonisms is offline        Reply With Quote
Old 02-14-2014, 05:40 PM   #25
JohnTC02
Registered Users
 
My HF Map location
Join Date: Jan 2013
Location: Norfolk UK
Default

Just done this mod to my 150, put 8 flights on it and all is fine without any o-rings fitted. To me the horns are quite stiff to turn over the splines so I'm not convinced the o-rings are needed.

Having said that I'm only sport flying but I still think it would be ok for 3d.
__________________
Velos 880 Neo, Logo 800 XX Vbar, T-Rex 800 Pro DFC Vbar, T-Rex 800 Trekker Vbar, T-Rex 700 Pro DFC Vbar, T-Rex 800 F3C Vbar, T-Rex 550E DFC Vbar, T-Rex 500 Pro DFC AR7200BX, T-Rex 450 Sport V2 AR7200BX, T-Rex 250 Pro AR7200BX, VController, DX9.
JohnTC02 is offline        Reply With Quote
Old 02-14-2014, 06:22 PM   #26
gabeoravitz
Registered Users
 
Posts: 982
Thread Starter Thread Starter
 

Join Date: Apr 2012
Location: San Diego, CA
Default

Quote:
Originally Posted by JohnTC02 View Post
Just done this mod to my 150, put 8 flights on it and all is fine without any o-rings fitted. To me the horns are quite stiff to turn over the splines so I'm not convinced the o-rings are needed.

Having said that I'm only sport flying but I still think it would be ok for 3d.
That's great. It's possible they'll loosen over time though.
gabeoravitz is offline        Reply With Quote
Old 02-14-2014, 06:23 PM   #27
gabeoravitz
Registered Users
 
Posts: 982
Thread Starter Thread Starter
 

Join Date: Apr 2012
Location: San Diego, CA
Default

Quote:
Originally Posted by mdecker79 View Post
What plugs are you using for your servos? Did they fall apart and you put on new connectors? The wires are different colors then the stock plugs.
Yep. I pulled the plugs out and the wires ripped out like they were made of paper. They are entirely too fragile. At least on my first batch 150. I would like to think they've been improved by now.
gabeoravitz is offline        Reply With Quote
Old 02-14-2014, 07:01 PM   #28
_Kyle_
Registered Users
 
Posts: 1,852
 

Join Date: Dec 2013
Location: Mobile AL
Default

Quote:
Originally Posted by gabeoravitz View Post
Yep. I pulled the plugs out and the wires ripped out like they were made of paper. They are entirely too fragile. At least on my first batch 150. I would like to think they've been improved by now.
When you take them out be careful because this can happen.. I use a Small Flathead Screwdriver and pop them out.. Won't hurt the wires or even touch them.:thumbup

http://www.helifreak.com/attachment....2&d=1392224049
__________________
||Mikado Logo 480XXtreme||
|Trex 450|
~Futaba 14SG~
_Kyle_ is offline        Reply With Quote
Old 02-14-2014, 11:04 PM   #29
SP4772
Registered Users
 

Join Date: Nov 2006
Location: Mirabel, Québec,Canada
Default

I saw that picture somewhere.... I feel that the entire heli is quite small and fragile. U can't just work on it without a good light and quality tools. Changing servo gears will be a surgeon operation!
SP4772 is offline        Reply With Quote
Old 02-14-2014, 11:36 PM   #30
gabeoravitz
Registered Users
 
Posts: 982
Thread Starter Thread Starter
 

Join Date: Apr 2012
Location: San Diego, CA
Default

Quote:
Originally Posted by SP4772 View Post
I saw that picture somewhere.... I feel that the entire heli is quite small and fragile. U can't just work on it without a good light and quality tools. Changing servo gears will be a surgeon operation!
It's actually pretty easy, I thought.
gabeoravitz is offline        Reply With Quote
Old 02-17-2014, 07:44 AM   #31
Zareph
Registered Users
 

Join Date: Feb 2014
Location: Denmark
Default

Would this be applicable to a V911, or is it too light-weight or something?

Cheers,
- Zareph
Zareph is offline        Reply With Quote
Old 02-17-2014, 11:04 AM   #32
Miracle Boy
Registered Users
 
Posts: 2,514
 

Join Date: Apr 2012
Location: Scotland, United Kingdom
Default

Quote:
Originally Posted by Dipweed View Post
I got 5.1mm OD plastic is just not that dimensionaly stable. It maybe by design 5mm+ 0.5 mm?
Using plastic caliper 3 measures. Mic may give a better reading (don't have).
5.1mm interesting. I measured around the collar at either side of the width of the servo horn. Did you measure across the collar in line with the length of the horn?

Cheers!!
__________________
Blade Nano CPX x 3, mCPX-BL x 3,130X, 180CFX, Lynx 450X-L, T-Rex 250 DFC, T-Rex 450L, T-Rex 500, KDS Chase 360, Goblin 380, Goblin 500 Sport, Spartan Vortex, DX8
"More the Knowledge Lesser the Ego, Lesser the Knowledge More the Ego" Albert Einstein
Miracle Boy is online now        Reply With Quote
Old 02-17-2014, 03:18 PM   #33
gabeoravitz
Registered Users
 
Posts: 982
Thread Starter Thread Starter
 

Join Date: Apr 2012
Location: San Diego, CA
Default

Quote:
Originally Posted by Zareph View Post
Would this be applicable to a V911, or is it too light-weight or something?

Cheers,
- Zareph
Any heli that has rotary servos, this can apply. If the V911 strips servos in crashes, it's worth a try. I'm not sure if the lower head speed of a small FP heli is going to have that problem or not. I've never had a V911 so I can't say.
gabeoravitz is offline        Reply With Quote
Old 02-17-2014, 04:03 PM   #34
Nelsonisms
HF Support
 
Posts: 6,529
 

Join Date: Feb 2013
Location: Austin, TX, USA
Default

So I scoured my LHS high and low on the "dark side" (rc cars) and couldn't find any o-rings anywhere close to this size. Home Depot was a no go. Same with Lowes. So I'm tapped out with finding a local source. I did however find some little sealing o-rings on a couple of my spent e-cig cartomizers that I'm going to try. If those don't work out I guess I'll order some from ORingsAndMore. @Go For It: Definitely let us know which ones worked out the best once you give them a try. Anyways I'm still waiting on the heli since the old postman is taking his sweet time.

__________________
Gaui X5F 6S (VBar), Lynx 450X-L 6S (Ikon), Lynx 300X-L 4S (Ikon), Blade 180CFX 3S (Ikon)
Lumenier QAV400 4S (Vector), Lumenier QAV250 3S (Naze32/CleanFlight), CYE Stingray 500 4S (TG Multi)
AMA Member, HCAM Member
Nelsonisms is offline        Reply With Quote
Old 02-17-2014, 05:07 PM   #35
gabeoravitz
Registered Users
 
Posts: 982
Thread Starter Thread Starter
 

Join Date: Apr 2012
Location: San Diego, CA
Default

Quote:
Originally Posted by Nelsonisms View Post
So I scoured my LHS high and low on the "dark side" (rc cars) and couldn't find any o-rings anywhere close to this size. Home Depot was a no go. Same with Lowes. So I'm tapped out with finding a local source. I did however find some little sealing o-rings on a couple of my spent e-cig cartomizers that I'm going to try. If those don't work out I guess I'll order some from ORingsAndMore. @Go For It: Definitely let us know which ones worked out the best once you give them a try. Anyways I'm still waiting on the heli since the old postman is taking his sweet time.

I believe this is what mine are (I found them in a box of random stuff). I used to have this heli. I sliced these in half to make them thinner.

http://www.bladehelis.com/Products/D...ProdID=BLH1608
gabeoravitz is offline        Reply With Quote
Old 02-17-2014, 05:20 PM   #36
Nelsonisms
HF Support
 
Posts: 6,529
 

Join Date: Feb 2013
Location: Austin, TX, USA
Default

Quote:
Originally Posted by gabeoravitz View Post
I believe this is what mine are (I found them in a box of random stuff). I used to have this heli. I sliced these in half to make them thinner.

http://www.bladehelis.com/Products/D...ProdID=BLH1608
Hmm...it just so happens I might have some stock 450X dampeners laying around. I use Lynx ultra dampeners in mine so the stockers are unused. I'll give that a shot too. Thanks.
__________________
Gaui X5F 6S (VBar), Lynx 450X-L 6S (Ikon), Lynx 300X-L 4S (Ikon), Blade 180CFX 3S (Ikon)
Lumenier QAV400 4S (Vector), Lumenier QAV250 3S (Naze32/CleanFlight), CYE Stingray 500 4S (TG Multi)
AMA Member, HCAM Member
Nelsonisms is offline        Reply With Quote
Old 02-18-2014, 11:23 AM   #37
Dipweed
Registered Users
 
Posts: 1,259
 

Join Date: Sep 2011
Location: USA, Tennessee, Memphis
Question Fused Servo Arm

Truth
I don't like splitting the servo arm
but
Servo Horn Set HSP15003 $4.99
Its a low $ deal so I will get a set and split the arm.
I will use a single edge razor blade (thinner the better). Externally glue the split arm together (flexible glue).
O ring stuff
O ring is a little to much and seems like a split arm should have a O ring grove or glue the O ring in place.
Question?
Has anyone flown with only the split servo arm?.
__________________
Align&HK450 L/470L/150 DFC/Blade stuff
DJI/AR Drone

Last edited by Dipweed; 02-19-2014 at 10:58 AM..
Dipweed is offline        Reply With Quote
Old 02-18-2014, 11:49 AM   #38
Nelsonisms
HF Support
 
Posts: 6,529
 

Join Date: Feb 2013
Location: Austin, TX, USA
Default

It seems to me that gluing with a pliable glue would work great until that first crash. If the glue broke free you'd then be putting glue on top of glue. As long as the o-rings are small and just tight enough to apply a little pressure I doubt they would slip around too much and would be easy to re-seat in the event of a crash that tweaked the arm on the spline.

JohnTC02 reported in post #25 that he had done it without o-rings and it worked fine for him. The thought here is that they may loosen up over time, so the o-rings are to keep a constant tension over time.
__________________
Gaui X5F 6S (VBar), Lynx 450X-L 6S (Ikon), Lynx 300X-L 4S (Ikon), Blade 180CFX 3S (Ikon)
Lumenier QAV400 4S (Vector), Lumenier QAV250 3S (Naze32/CleanFlight), CYE Stingray 500 4S (TG Multi)
AMA Member, HCAM Member
Nelsonisms is offline        Reply With Quote
Old 02-18-2014, 12:55 PM   #39
kimthepilot
Registered Users
 
Posts: 235
 

Join Date: Feb 2011
Location: Thunder Bay, Ontario Canada
Default

I drilled some holes in my servo arms, in an effort to weaken them just enough to break in a crash. You get 6 servo arms for the price of one set of servo gears, so hopefully this works!
kimthepilot is offline        Reply With Quote
Old 02-18-2014, 01:45 PM   #40
gabeoravitz
Registered Users
 
Posts: 982
Thread Starter Thread Starter
 

Join Date: Apr 2012
Location: San Diego, CA
Default

Quote:
Originally Posted by Dipweed View Post
Truth
I don't like splitting the servo arm
but
Servo Horn Set HSP15003 $4.99
Its a low $ deal so I will get a set and split the arm.
I will use a single edge razor blade (thinner the better). Externally glue the split arm together (flexible glue).
Question?
Have you split the arm and flown it with out the O ring stuff. O ring is a little to much and seems like a split arm should have a O ring grove or glue the O ring in place.
Again
Has anyone flown with only the split servo arm?.
I have flown it without the o-rings. It works. It's just really lose and it got to the point that when I started doing hard 3D, it would slip in flight. It doesn't cause a crash automatically as long as you are quick enough to make up for the lost of pitch in either direction. The FBL system still keeps it stable, it just if it slips in flight, it needs more pitch in one direction or another on the stick.

I like the idea of a flexible glue on the split though.
gabeoravitz is offline        Reply With Quote
Reply




Unregistered
Go Back   HeliFreak > R/C Helicopter Support > 150 Class Electric Helicopters


150 Class Electric Helicopters 150 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


Copyright © 2004-2016 by RCGroups.com, LLC except where otherwise indicated. The HeliFreak.com logo is a trademark of RCGroups.com, LLC.