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e-Century Hummingbird - Swift > CNC Grips on Swift - HELP please
 
 
wrathofkhan
Veteran
Location: LA, CA - US

hello, I am at work - and just received the CNC grips (purchased online and only took 3 days!).

Anyhow, upon inspection, I noticed that it has the radial bearings already installed - but no thrust bearings (not sure if there are any spacers between the inner/outer bearing. I had couple of quesitons:

1. can i just swap my thrust bearings from my plastic grips?
2. will i need any washers between the radial/thrust bearings?
3. i also received the spacer, which goes between the dampner and grips ... will i need to grind it down (i believe Ron/Laughingstill mentioned it before)?
4. will i need to shave down the rubber dampner (i do have the latest version of feahering shaft)

i would love to see what this bird can do with higher headspeed. since i was using plastic grips, i kept it below 2100rpm with 550s.

your advice/experience will be much appreciated ... khan

PS currently i am using the metal headblock. i do get vibration at certain HS during spool up/down - i just play with the pitch a bit to get rid of it.
05-08-2008 01:33 AM
 
 
Ravenhyper50
Senior Heliman
Location: Ottawa

1. can i just swap my thrust bearings from my plastic grips? NO

2. will i need any washers between the radial/thrust bearings? YES

3. i also received the spacer, which goes between the dampener and grips ... will i need to grind it down? Only if the head is not smooth.

4. will i need to shave down the rubber dampener (i do have the latest version of feathering shaft) If its black you got the latest. No shaving of the dampeners or shaft is needed just the spacers between the dampeners and bearing. ( I think that's why they make them aluminum now instead of brass. More easy to shave/sand/grind down.

SWIFT 550 Carbon, Swift 620SE, DX-7, JR servos
05-08-2008 01:59 AM
 
 
shooter75
Senior Heliman
Location: Woodland Hills, Ca

Hey I have an extra set of thrust bearings for ya. Just send me your address and ill send out tomorrow.

Eric
05-08-2008 02:02 AM
 
 
shooter75
Senior Heliman
Location: Woodland Hills, Ca

And I also have some spare spacers that go between the radial and thrust bearings also.!!!
05-08-2008 02:05 AM
 
 
wrathofkhan
Veteran
Location: LA, CA - US

just sent you PM, Eric

i really like the people who browse the swift area !!!
05-08-2008 07:35 AM
 
 
wrathofkhan
Veteran
Location: LA, CA - US

just curious ... will the original plastic grips take the stress (at say 2300 rpm, with 550mm blades)

has anyone tried it out?
05-09-2008 02:45 AM
 
 
laughingstill
Key Veteran
Location: Gainesville, Fl, USA

I have not but I would not try that headspeed without CNC grips.....Ron

3DMP-E, Logo 6003D, Logo103D Carbon and Trex 450se Flyin Firefighter
05-09-2008 03:02 AM
 
 
centuryman
Senior Heliman
Location: deerriver,mn usa

yes i have tryed that and yes they will take it but i won't recomend anybody else try it unless they are willing to see ther heli explode in mid air. I have had no problems but i don't fly it around other people or close to myself.but man does it rock on a 8s neu power system.
05-09-2008 03:23 AM
 
 
wrathofkhan
Veteran
Location: LA, CA - US

ron,

i got the new feathering shaft, new aluminum colored spacer. do i still need to shave the dampner, and grind down spacer?

and i am very much surprised that the thrust bearings are not interchangeable between plastic grips and cnc grips... bummer.

this is the thrust bearings, i bought:

CNBB614T2 - Thrust Bearing 6x14x5 (2)

which one should i have bought, so then it would fit on the cnc grips?
05-09-2008 05:55 AM
 
 
laughingstill
Key Veteran
Location: Gainesville, Fl, USA

If you got the new thrust bearings and the new spacer, it should all fit fine. When you get it together and it is sticky, then you know what to do.....Ron

3DMP-E, Logo 6003D, Logo103D Carbon and Trex 450se Flyin Firefighter
05-09-2008 11:40 AM
 
 
wrathofkhan
Veteran
Location: LA, CA - US

this is what i found on the century heli website:

6x13.8x5 Thrust Bearings (CNBB6138T/CNBB6138T2)

the dimensions are off from what i ordered:
(CNBB614T2 - Thrust Bearing 6x14x5) by .2mm, i wish i have known that.

now i am thinking, maybe the washer between the thrust and radial bearings might be different too - or, are they the same sized washer?
05-09-2008 04:24 PM
 
 
laughingstill
Key Veteran
Location: Gainesville, Fl, USA

They should be different also.

3DMP-E, Logo 6003D, Logo103D Carbon and Trex 450se Flyin Firefighter
05-09-2008 04:49 PM
 
 
wrathofkhan
Veteran
Location: LA, CA - US

this is not good, how am i going to find these washers?!?!

i will try to find it on century heli website tonight
05-09-2008 05:10 PM
 
 
shooter75
Senior Heliman
Location: Woodland Hills, Ca

Hey I sent you the washers also!
05-09-2008 05:45 PM
 
 
wrathofkhan
Veteran
Location: LA, CA - US

YOU ARE THE MAN !!!

thank you very much !!
05-09-2008 07:12 PM
 
 
shooter75
Senior Heliman
Location: Woodland Hills, Ca

No problem buddy., i sent it out yesterday, so you should have either today or tomorrow.
05-09-2008 07:17 PM
 
 
wrathofkhan
Veteran
Location: LA, CA - US

i tried out the cnc grips, thanks to Shooter75's help.

actually, i was surprised how well they parts fit together. after tightening the grips (from each end) quite a bit, i thought it would bind, it didn't

at the field, as i spooled up, i was expecting the infamous jitters... well, it did vibrate a bit, but way less than when i had the stock grips. keep in mind, that i do not have the reinforced frame, neither do i have the third bearing block upgrade.

i am using 12T, on 1910/1.5y with 10s a123. it flew fine, loads of power ... HS was around 2400 - flight lasted 5 minutes, the motor got up to around 140 degrees, which i am not that happy with ... but that is another topic

cheers, and thanks to everyone ... specially shooter

khan
05-11-2008 03:16 AM
 
 
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e-Century Hummingbird - Swift > CNC Grips on Swift - HELP please
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