Fun, Learning, Friendship and Mutual Respect START  HERE


Unregistered
Go Back   HeliFreak > R/C Electronics Support > Xnova Motors Support


Xnova Motors Support Xnova Motors Factory Support


Reply
 
LinkBack Thread Tools Display Modes
Old 01-07-2017, 01:15 PM   #1 (permalink)
Registered Users
 
Posts: 865
 

Join Date: Dec 2013
Question Xnova 4525 560kv shaft play

On my goblin 700 black thunder, I found out the reason my pulley and motor belt height keeps changing, is because the whole motor shaft is moving (can has about 1mm up/down play), this is a problem when I need the pulley to stay 0.2mm above the bearing block...

These Xnova motors obviously have a wave washer (as pictured) underneath the circlip, and I can see that mine is uncompressed meaning my shaft must have moved downwards, and when I'm flying this is allowing my motor can/shaft to move. Before a flight I push the motor can dowanwards to get correct belt alignment, and after the flight I'll be able to push the motor can/shaft back down to re-align my pulley

So I'm simply trying to move my shaft back up and eliminate the play/compress the washer

But I can't actually move the shaft so I can tighten the motor can so it stays compressed. I've taken the two grub screws out of the top of the motor can (that hold the shaft in place) and tried to move the shaft up but it won't budge

What's the correct process to move the shaft through the motor can?

Don't want to bust my new Motor!
It's only had about 60 flights and this play has been there at least 30 of those flights

Thanks!
__________________
Goblin 700 Black Thunder-Xnova XTS 4525 560kv- BK7001HV/BK7006HV- Hobbywing 130a V4- Spirit Pro Citizen 828
HeliHamish is offline        Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 01-11-2017, 04:55 PM   #2 (permalink)
Registered Users
 
Posts: 865
Thread Starter Thread Starter
 

Join Date: Dec 2013
Default

Xnovas response for anyone interested-

Lets try to explain.

1.
All motors have a little play, this need to be like this to give the
bearings and the motor room to breath.
Basically about 1mm is ok, our tolorances are from 0.5mm to 1mm
We have 1000 of Goblin pilots users and they do not have mention this
issue, also we work very close with SAB and most of them use our motors,
including the Designers Enrico and Stefano.

2.
I will try to explain to do the propper setup as also our SAB team
pilots do.

A_
spinn the motor to let the stator find the perfect position in the
magent field.
by esc or even by hand give it a few turns

B_
then adjust the belt position with the pinion, tide all up and do not
pull the motor bell up or down when doing this.

C_
when the motor is in use the stator will be forced by the magnet strengt
in his perfect location and will also not be able to move. ( in flight
condition )


I am 100% sure this is all fine.
However if you not happy with this, you may add a aditional washer, like
0.2 inbetwee the c_clip and the wave spring washer.
If you not familiar how to remove the C_clip ask for Help or Ask the
Shop which you buy it for assistance.

But like i say i am sure all is fine.


Thank you.
Joachim
teamxnova
__________________
Goblin 700 Black Thunder-Xnova XTS 4525 560kv- BK7001HV/BK7006HV- Hobbywing 130a V4- Spirit Pro Citizen 828
HeliHamish is offline        Reply With Quote Quick reply to this message
Old 01-11-2017, 06:35 PM   #3 (permalink)
Registered Users
 
Posts: 1,080
 

Join Date: Oct 2015
Default

I've definitely been waiting to see where this thread went, being I have the exact same motor going in the same kit. Have you noticed any indication the belt is rubbing?
slogoat is offline        Reply With Quote Quick reply to this message
Old 01-11-2017, 07:01 PM   #4 (permalink)
Registered Users
 
Posts: 865
Thread Starter Thread Starter
 

Join Date: Dec 2013
Default

I've got some belt dust around my motor mount etc, but I think this is actually because it seems to like riding high on the motor pulley which you can't stop at all. Otherwise the belts showing really no signs of wear

Once it wears in a little more I expect there to be no dust

The belt is definitely not riding off the main pulley or anything like that, it's just not riding dead in the middle as it should

Although once I re setup it might be fixed
__________________
Goblin 700 Black Thunder-Xnova XTS 4525 560kv- BK7001HV/BK7006HV- Hobbywing 130a V4- Spirit Pro Citizen 828
HeliHamish is offline        Reply With Quote Quick reply to this message
Old 01-11-2017, 07:18 PM   #5 (permalink)
Registered Users
 
Posts: 1,080
 

Join Date: Oct 2015
Default

I got ya. I'm having trouble understanding that reply you got from xnova. Are you going to shim the motor, or just try and adjust ?
slogoat is offline        Reply With Quote Quick reply to this message
Old 01-11-2017, 07:57 PM   #6 (permalink)
Registered Users
 
Posts: 865
Thread Starter Thread Starter
 

Join Date: Dec 2013
Default

I'll just re adjust

If I remember last time I setup I pressed down on the motor can before I set the pulley height, which would explain why my pulley is moving upwards during flight because my motor pulley was not set with the motor in its "neutral" position :-)

I'll have to wait and see however, the very first time I setup I thought I did it right by not moving the motor can, and next thing I know my pulley was grinding on the bearing block

So next calm day I'll have to test

Great choice in motor btw this thing is powerful!
__________________
Goblin 700 Black Thunder-Xnova XTS 4525 560kv- BK7001HV/BK7006HV- Hobbywing 130a V4- Spirit Pro Citizen 828
HeliHamish is offline        Reply With Quote Quick reply to this message
Old 01-11-2017, 08:36 PM   #7 (permalink)
Registered Users
 
Posts: 1,080
 

Join Date: Oct 2015
Default

Quote:
Originally Posted by HeliHamish View Post
I'll just re adjust

If I remember last time I setup I pressed down on the motor can before I set the pulley height, which would explain why my pulley is moving upwards during flight because my motor pulley was not set with the motor in its "neutral" position :-)

I'll have to wait and see however, the very first time I setup I thought I did it right by not moving the motor can, and next thing I know my pulley was grinding on the bearing block

So next calm day I'll have to test

Great choice in motor btw this thing is powerful!
Yes I believe I actually sent you (along with a couple others) a pm about your setup before I got it. All the people I talked to running this motor in the BT seem to love it. I will definitely be interested in hearing the results after you adjust.
slogoat is offline        Reply With Quote Quick reply to this message
Old 01-12-2017, 12:39 AM   #8 (permalink)
Registered Users
 
Posts: 865
Thread Starter Thread Starter
 

Join Date: Dec 2013
Default

I just test flew again

It's not a motor problem now, it's just that despite my pulley being pretty much as low as possible, my belt is still riding way to high on the main pulley

I'll ask Sab and send some photos through
__________________
Goblin 700 Black Thunder-Xnova XTS 4525 560kv- BK7001HV/BK7006HV- Hobbywing 130a V4- Spirit Pro Citizen 828
HeliHamish is offline        Reply With Quote Quick reply to this message
Old 01-12-2017, 08:38 AM   #9 (permalink)
Registered Users
 
Posts: 1,080
 

Join Date: Oct 2015
Default

Quote:
Originally Posted by HeliHamish View Post
I just test flew again

It's not a motor problem now, it's just that despite my pulley being pretty much as low as possible, my belt is still riding way to high on the main pulley

I'll ask Sab and send some photos through
Dang, I was hoping for good news. Well, I suppose it's good the motor doesn't seem to be the source of your problems. Maybe some of the other guys running this setup will see this thread and comment. I know there are at least a couple other guys with an identical motor / kit combo.
slogoat is offline        Reply With Quote Quick reply to this message
Old 01-12-2017, 09:59 AM   #10 (permalink)
Registered Users
 
Posts: 1,080
 

Join Date: Oct 2015
Default

Although not ideal, I was just thinking maybe you could run a spacer on that lower bearing block and lower the pinion more? Just trying to come up with some last resort options.
slogoat is offline        Reply With Quote Quick reply to this message
Old 01-12-2017, 01:52 PM   #11 (permalink)
Registered Users
 
Posts: 865
Thread Starter Thread Starter
 

Join Date: Dec 2013
Default

Again, a positive response from sab lol

Dear customer,

From pics i see a correct situation.
It is almost impossible to have belt in the center because the belt will
move always or on the top, or on the bottom... the one way pulley is bigger
for this reason.

Sure, no any problem in your setup.

Let me know if you have question, best regards
Matteo
SAB Heli Division

So time to just continue flying the shit out of it!
__________________
Goblin 700 Black Thunder-Xnova XTS 4525 560kv- BK7001HV/BK7006HV- Hobbywing 130a V4- Spirit Pro Citizen 828
HeliHamish is offline        Reply With Quote Quick reply to this message
Old 01-12-2017, 01:55 PM   #12 (permalink)
Registered Users
 
Posts: 865
Thread Starter Thread Starter
 

Join Date: Dec 2013
Default



__________________
Goblin 700 Black Thunder-Xnova XTS 4525 560kv- BK7001HV/BK7006HV- Hobbywing 130a V4- Spirit Pro Citizen 828
HeliHamish is offline        Reply With Quote Quick reply to this message
Old 01-12-2017, 01:56 PM   #13 (permalink)
Registered Users
 
Posts: 1,080
 

Join Date: Oct 2015
Default

Thanks for sharing the pics! Happy flying!

slogoat is offline        Reply With Quote Quick reply to this message
Old 04-25-2017, 08:20 AM   #14 (permalink)
Registered Users
 

Join Date: Nov 2013
Default

#1 Once you really understand it, this is the best design. Its important to reduce up down play on the canister, like a kontronik. Add a shim to the inside and outside wave washer so you reduce the amount of up and down canister play. If you are confident in doing so you can actually move the main shaft up a little bit in the motor housing to further reduce canister up down play.

#2 This will serve two purposes , help center belt on main pulley and also keep the bottom of the pinion pulley away from the counter bearing. The counter bearing bracket can flex a tiny bit and combined with the canister in a low position they will touch.

#3 Alternatively, go with 8mm motor shaft option and eliminate counter bearing and bracket entirely.
jsbach#1 is offline        Reply With Quote Quick reply to this message
Old 12-17-2019, 09:27 PM   #15 (permalink)
Registered Users
 
Posts: 2,047
 

Join Date: Nov 2010
Default

Quote:
Originally Posted by HeliHamish View Post
Xnovas response for anyone interested-

Lets try to explain.

1.
All motors have a little play, this need to be like this to give the
bearings and the motor room to breath.
Basically about 1mm is ok, our tolorances are from 0.5mm to 1mm
We have 1000 of Goblin pilots users and they do not have mention this
issue, also we work very close with SAB and most of them use our motors,
including the Designers Enrico and Stefano.

2.
I will try to explain to do the propper setup as also our SAB team
pilots do.

A_
spinn the motor to let the stator find the perfect position in the
magent field.
by esc or even by hand give it a few turns

B_
then adjust the belt position with the pinion, tide all up and do not
pull the motor bell up or down when doing this.

C_
when the motor is in use the stator will be forced by the magnet strengt
in his perfect location and will also not be able to move. ( in flight
condition )


I am 100% sure this is all fine.
However if you not happy with this, you may add a aditional washer, like
0.2 inbetwee the c_clip and the wave spring washer.
If you not familiar how to remove the C_clip ask for Help or Ask the
Shop which you buy it for assistance.

But like i say i am sure all is fine.


Thank you.
Joachim
teamxnova

Old thread...thanks for the info !!
__________________
Align 800e PRO DFC // KRAKEN Yellow // Align 700N DFC, 105HZ-R HV // RAW Yellow // 2x Goblin 420 // RealFlight 7.5 // neXt // AccuRc // Tribunus - Vbar Control Touch - Vbar Neo
msallua is offline        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