Fun, Learning, Friendship and Mutual Respect START  HERE


Unregistered
Go Back   HeliFreak > R/C Helicopter Support > SAB Goblin 630/700/770


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


Like Tree27Likes
Reply
 
LinkBack Thread Tools Display Modes
Old 02-10-2021, 12:07 AM   #21 (permalink)
Registered Users
 
Posts: 10,078
 
My HF Map location
Join Date: Oct 2005
Location: Grande Prairie, Alberta
Default

Quote:
Originally Posted by Locktite View Post
One thing I needed to do when installing them into the kraken 700 head was use a deburring tool to chamfer the edge of the headblock so the dampener went in without damaging the inner o ring on the dampener.. also use lots of lubrication. ..the kraken 580 the chamfer was not needed
Like a reamer canopy opening tool or exactly what speaking to on the inner head block ?
__________________
...Once upon a time there were Nitros, flybars & frequency pins...Shawn
OICU812 is online now        Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 02-10-2021, 01:03 PM   #22 (permalink)
Registered Users
 
Posts: 2,804
 

Join Date: Jun 2006
Default

No i suggest using a deburring tool like in the link I have provided.. you can maybe get away with a canopy reamer if its large enough. If you take a look at the picture of the headblock it’s the inner diameter of where the dampener goes in that you chamfer
Hand Deburring Tool Kit, Golden^Li Burr Cutter with NB1100 Anti-Slip Handle + 10 Pcs 360°Rotary HSS Deburr Blades, Burr Trimming Scrapers Kit for Aluminum, Copper,Steel,Wood and Plastic https://www.amazon.com/dp/B07SB5HB6T...ing=UTF8&psc=1

Spencerkey likes this.
__________________
Tron 7.0 Tron 5.5 Tron Nitron
Vcontrol Neo
Locktite is offline        Reply With Quote Quick reply to this message
Old 02-12-2021, 07:40 AM   #23 (permalink)
Registered Users
 
Posts: 8,163
 

Join Date: Jun 2009
Location: Edmonton, Alberta, Canada
Default

The leading edge is sharp ? Couldn’t I just use a piece of emery cloth and take the sharpe edge off ?

I am think I may buy some of these dampeners. If the low head speed performance is better they would be worth trying out. They say they can go down to 500 rpm and still good for high rpm.
__________________
Diabolo 700 BE, 600, Synergy-696, E5SS, Logo 600, 200, Goblin Raw 700, VCT, VBar, Egodrift, Scorpion, Kontronik, MKS, XPert, KST
Freeskiken is offline        Reply With Quote Quick reply to this message
Old 02-12-2021, 05:04 PM   #24 (permalink)
Registered Users
 
Posts: 2,804
 

Join Date: Jun 2006
Default

It’s not that it is sharp but being the rigid core dampeners are so hard you run the chance of nipping the the o rings during install..These dampeners take some force to get into position .. deburring tool is what I was recommended to use by Augusto.. it worked out perfect..
__________________
Tron 7.0 Tron 5.5 Tron Nitron
Vcontrol Neo
Locktite is offline        Reply With Quote Quick reply to this message
Old 02-12-2021, 05:06 PM   #25 (permalink)
Registered Users
 
Posts: 2,109
Thread Starter Thread Starter
 

Join Date: Sep 2012
Default

I appreciate the tip Locktite. I ordered the deburring tool you recommended.
Locktite likes this.
__________________
TDR’s / Diabolo BE’s / Diabolo SE / Diabolo UL / Goblin Kraken
VBC, VBCT, Kontronik, MKS, R2 buffer

Last edited by Spencerkey; 02-12-2021 at 07:23 PM..
Spencerkey is online now        Reply With Quote Quick reply to this message
Old 02-13-2021, 03:23 PM   #26 (permalink)
Registered Users
 
Posts: 5,165
 

Join Date: Nov 2008
Default

You don't need a deburring tool. An Exacto knife works excellent and does not roll any burr which can happen with some deburring tools, An angle closer to 20 degrees is also preferred over a 45 degrees, the insertion force decreases with a lower angle. This also applies to bores for bearings and bushings.
Helicrazy2 likes this.
__________________
Tom

TRM Power
CAUTION - my posts are based on my experiences, yours may be different.
fastflyer20 is online now        Reply With Quote Quick reply to this message
Old 02-13-2021, 03:55 PM   #27 (permalink)
Registered Users
 
Posts: 2,804
 

Join Date: Jun 2006
Default

Ok you do that, I will stick with the deburring tool that I was recommended to use by Augusto (designer of these dampeners) .. it worked perfect and did the job correctly for me..enjoy your day and happy flying.
__________________
Tron 7.0 Tron 5.5 Tron Nitron
Vcontrol Neo
Locktite is offline        Reply With Quote Quick reply to this message
Old 02-17-2021, 11:58 PM   #28 (permalink)
Registered Users
 
Posts: 19,220
 

Join Date: Jan 2009
Location: NorCal
Default

They give a really awesome rigid direct response. While also running low head speed or doing autos absolutely like glass without resonance or weird behavior.

Normally there is quite some compromise and ugly break in periods with the stock dampening.

I have them on a Kraken, K580N, and bought a set for the Raw I'm building.
__________________
Xpert
Scorpion Power Systems
OnlyFineHelis. Family Run/Operated
OnTheSnap is offline        Reply With Quote Quick reply to this message
Old 02-18-2021, 01:31 AM   #29 (permalink)
Registered Users
 
Posts: 10,078
 
My HF Map location
Join Date: Oct 2005
Location: Grande Prairie, Alberta
Default

Quote:
Originally Posted by OnTheSnap View Post
They give a really awesome rigid direct response. While also running low head speed or doing autos absolutely like glass without resonance or weird behavior.

Normally there is quite some compromise and ugly break in periods with the stock dampening.

I have them on a Kraken, K580N, and bought a set for the Raw I'm building.
Interesting as far as (tuning) in vbar goes, is it all that different from a main disc gain perspective? I also ordered some of these as I am going to be building a raw as well and setting it up same to my logo 700 build to fairly compare the two helis.
__________________
...Once upon a time there were Nitros, flybars & frequency pins...Shawn
OICU812 is online now        Reply With Quote Quick reply to this message
Old 02-22-2021, 10:55 PM   #30 (permalink)
Registered Users
 
Posts: 8,163
 

Join Date: Jun 2009
Location: Edmonton, Alberta, Canada
Default

Well I ordered the dampers and the de burring tool.
__________________
Diabolo 700 BE, 600, Synergy-696, E5SS, Logo 600, 200, Goblin Raw 700, VCT, VBar, Egodrift, Scorpion, Kontronik, MKS, XPert, KST
Freeskiken is offline        Reply With Quote Quick reply to this message
Old 02-23-2021, 04:02 AM   #31 (permalink)
Registered Users
 
Posts: 2,804
 

Join Date: Jun 2006
Default

This may help a few people out.. This video shows Augusto installing the rigid core dampeners in his avant Mostro.. yes an older video but a similar installation process can be used on the Kraken/ Raw/ 580 head (580 head was a little easier and no chamfer needed in head block)

http://www.avantrc.com/Products/Most...Insertion.html
jhamel and Spencerkey like this.
__________________
Tron 7.0 Tron 5.5 Tron Nitron
Vcontrol Neo
Locktite is offline        Reply With Quote Quick reply to this message
Old 03-17-2021, 02:28 PM   #32 (permalink)
Registered Users
 
Posts: 8,163
 

Join Date: Jun 2009
Location: Edmonton, Alberta, Canada
Default

Thanks for the video. It helps to know the correct method to install the rigid dampeners.
Spencerkey likes this.
__________________
Diabolo 700 BE, 600, Synergy-696, E5SS, Logo 600, 200, Goblin Raw 700, VCT, VBar, Egodrift, Scorpion, Kontronik, MKS, XPert, KST
Freeskiken is offline        Reply With Quote Quick reply to this message
Old 03-19-2021, 01:27 AM   #33 (permalink)
Registered Users
 

Join Date: Oct 2013
Default

imho save the money. Not worth the trouble. THey are a pain in the ass to install, getting them out is worse and honestly I like the feel of the stock dampeners better
Helicrazy2 likes this.
dbirds2 is offline        Reply With Quote Quick reply to this message
Old 03-19-2021, 05:18 AM   #34 (permalink)
Registered Users
 
Posts: 107
 

Join Date: Mar 2020
Location: Germany, near Hamburg
Default

I finally received my little package from overseas. Installation (Trex 700) was easy and I like the performance. The Rex snaps a bit more into place. Absolutely no wiggely wobbely on the swash at any headspeed. So for Trex 700X Head I can recommend them! As always: YMMV
Netzferatu is offline        Reply With Quote Quick reply to this message
Old 03-19-2021, 06:03 AM   #35 (permalink)
Registered Users
 
Posts: 2,804
 

Join Date: Jun 2006
Default

Quote:
Originally Posted by dbirds2 View Post
imho save the money. Not worth the trouble. THey are a pain in the ass to install, getting them out is worse and honestly I like the feel of the stock dampeners better
Certainly not a waste of money.. if you follow correct install procedure they are very easy to install.
__________________
Tron 7.0 Tron 5.5 Tron Nitron
Vcontrol Neo
Locktite is offline        Reply With Quote Quick reply to this message
Old 03-19-2021, 07:13 AM   #36 (permalink)
Registered Users
 
Posts: 10,055
 

Join Date: Mar 2011
Location: Charlotte, NC USA
Default

I tried them on my Kraken 580. 30+ flights with them so far. I like them better than the stock 90/90 dampeners.

The o-rings came preinstalled. I had not seen the video, so I used standard Tri-Flow clear grease. I did not know about deburring the edges of the head block, so I did not do it. The dampeners inserted pretty easily to about 3/4 of the way in. Tight fit, but not excessively so until the last 1/4 of the way. I did not know about the recommendation to use groove pliers or an arbor press, so I just used 2 small flat plastic plates and brute force to get them in the last 1/4 of the way. I then inserted the blade grips without shimming between the dampeners and the blade grips. I tightened the blade grips a little bit at a time to gauge for preload. After the blade grips radial bearings abutted the dampeners, I believe I was only able to rotate the bolts about 1 turn to fully tighten. The point here is that there is some preload, but not too much preload to put excessive pressure on the blade grips bearings inner races. The tension on the blades grips felt optimal without shimming, so I left it alone.

I like the results. Before inserting these dampeners, I had given up fighting cyclic shakes which now disappeared with these dampeners. I was able to increase the head gains 18% to 24% per bank. I generally fly between 1900rpm to 2200rpm using RT-U 580 blades, but I was practicing autorotations at about 1425rpm. As expected, the response was slow at that rpm, but there were no annoying head shakes or wobbles.

My verdict: Expensive, but substantially improved performance.
OICU812 and Spencerkey like this.
__________________
Tron 7 (14S), Protos 700X Evo (14S), Kraken (14S)/Kraken 580 (7S)/Buddy 380 KSE (6S), Logo 550SX V2 (7S); YGE "T" ESCs; VBC Touch & Neo Vlinks, AGM Deep Cycle Batteries
Sims on Mac: Heli-X, neXt, AccuRC, RF9, Phoenix, AeroFly RC7 Ultimate
jhamel is online now        Reply With Quote Quick reply to this message
Old 03-19-2021, 12:29 PM   #37 (permalink)
Registered Users
 

Join Date: Oct 2013
Default

Quote:
Originally Posted by Locktite View Post
Certainly not a waste of money.. if you follow correct install procedure they are very easy to install.
not easy on mine after following exact instructions from video. Not a deal breaker but did not like them on flight performance, so I took them out and that was a pain in the ass. upgrades on these helis have never been a big fan of doing. With these dampeneres I got a huge amount of elevator tail bobble, which brought my gains down to 50 and it felt like shiaaat...... so I took them out.
Helicrazy2 likes this.
dbirds2 is offline        Reply With Quote Quick reply to this message
Old 03-19-2021, 06:46 PM   #38 (permalink)
Registered Users
 
Posts: 10,078
 
My HF Map location
Join Date: Oct 2005
Location: Grande Prairie, Alberta
Default

Quote:
Originally Posted by dbirds2 View Post
not easy on mine after following exact instructions from video. Not a deal breaker but did not like them on flight performance, so I took them out and that was a pain in the ass. upgrades on these helis have never been a big fan of doing. With these dampeneres I got a huge amount of elevator tail bobble, which brought my gains down to 50 and it felt like shiaaat...... so I took them out.
What heli did you run them in that you were experiencing this?
__________________
...Once upon a time there were Nitros, flybars & frequency pins...Shawn
OICU812 is online now        Reply With Quote Quick reply to this message
Old 03-20-2021, 12:46 AM   #39 (permalink)
Registered Users
 

Join Date: Oct 2013
Default

goblin raw. The stock dampening on the rigid platform is soooooo much better for me.
Helicrazy2 likes this.
dbirds2 is offline        Reply With Quote Quick reply to this message
Old 03-22-2021, 01:19 AM   #40 (permalink)
Registered Users
 
Posts: 10,078
 
My HF Map location
Join Date: Oct 2005
Location: Grande Prairie, Alberta
Default

Quote:
Originally Posted by dbirds2 View Post
goblin raw. The stock dampening on the rigid platform is soooooo much better for me.
Interesting, I keep hearing how many people love these rigidcore dampers, but of course alas the Raw is a very new heli overall and seems not many also have really ran them on the Kraken (same head) either.
__________________
...Once upon a time there were Nitros, flybars & frequency pins...Shawn
OICU812 is online now        Reply With Quote Quick reply to this message
Reply




Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the HeliFreak forums, you must first register.
Please enter your desired user name, your REAL and WORKING email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself. Use a real email address or you will not be granted access to the site. Thank you.
Email Address:
Location
Where do you live? ie: Country, State, City or General Geographic Location please.
Name and Lastname
Enter name and last name here. (This information is not shown to the general public. Optional)
Helicopter #1
Enter Helicopter #1 type and equipment.
Helicopter #2
Enter Helicopter #2 type and equipment.
Helicopter #3
Enter Helicopter #3 type and equipment.
Helicopter #4
Enter Helicopter #4 type and equipment.

Log-in


Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On




Copyright © Website Acquisitions Inc. All rights reserved.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.

SEO by vBSEO 3.6.1