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SAB Goblin 630/700/770 SAB Heli Division 630/700/770 - Goblin Helicopters Factory Support


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Old 04-30-2021, 08:54 PM   #1 (permalink)
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Default raw - replace bearing in main blade grip?

is it possible to replace the "factory installed" bearing in the main blade grip?

the manual doesn't provide a part number for the bearing, and after 20 minutes, i have been unable to extract it from the blade grip.

if i need a new bearing, do i need to order the whole blade grip?
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Old 04-30-2021, 11:52 PM   #2 (permalink)
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The radial bearing comes bonded to the blade grip. When I need to remove it, I apply heat with a small torch to loosen the bond before tapping it out the radial bearing. Applying heat with a soldering iron has never worked for me, but the torch always works. I do not apply any bonding agent to the new replacement radial bearing.
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Old 05-01-2021, 02:37 AM   #3 (permalink)
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Just did mine today, bit of heat from the torch to get hot enough to break the retaining compound and they pop out easy. I chose to glue the new ones in but doubt it would be necessary. Same bearing as the outer, 6800zz
I had to replace them on new Kraken build. One must have not been fully seated when it was glued at factory as grips were extremely tight with only the 1mm washers (no shims) to the point it damaged the bearings.
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Old 06-02-2021, 09:08 PM   #4 (permalink)
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Default raw - replace bearing in main blade grip?

I need to replace my blade grip bearing too, both inner bearings feels like sand in them, this is after about 15 flight. I am going to install the logo 550 bearing.

https://shop.mikadousa.com/01329-Bal...19x5_p_28.html

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Old 08-22-2021, 05:36 AM   #5 (permalink)
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I made a bearing puller for removing it no heat need !
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Old 08-22-2021, 08:38 AM   #6 (permalink)
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Quote:
Originally Posted by Helicrazy2 View Post
I made a bearing puller for removing it no heat need !
Can you share details on this?
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Old 08-22-2021, 09:10 AM   #7 (permalink)
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I never understood issues with getting bearings out of grips. Most will tap right out.

Sent from my SM-G988U using Tapatalk
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Old 08-22-2021, 08:35 PM   #8 (permalink)
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SAB bond them in with green
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Old 08-23-2021, 06:47 AM   #9 (permalink)
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Quote:
Originally Posted by Stevecg View Post
SAB bond them in with green
How they were put in was never an issue for me. Never had one in so well that I couldn't just tap it out. A little heat if needed and done.

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Old 08-24-2021, 12:36 AM   #10 (permalink)
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You have removed bearings on kraken/raw?
Edit: I see you mention heat so not sure what you are saying
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Old 08-24-2021, 06:41 AM   #11 (permalink)
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Quote:
Originally Posted by Stevecg View Post
You have removed bearings on kraken/raw?
Edit: I see you mention heat so not sure what you are saying
Yes, replaced them on my RAW. Didn't need heat at all, but if they are being stubborn heat will help. If you put the grip on your bench, open end down and take a 2.5mm driver and stick inside the grip through the inner bearing, you can hang the lip of the outer bearing. A couple of taps on the handle of the driver and it will drop right out. Once you've done that, flip the grip and do the same with driver, only this time hold grip and driver in one hand and tap the driver handle on the bench. Usually come out after a couple of taps. Larger grips like ones on the RAW are usually very easy. It's the smaller grips, like Oxy 3, that require some heat at times.
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Old 09-14-2021, 05:14 AM   #12 (permalink)
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I have a tool that work awesome if you need one pm me !
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Last edited by Helicrazy2; 09-16-2021 at 11:31 AM..
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