R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Reply
 
Thread Tools Search this Thread
Old 05-04-2011, 02:17 PM   #436
Tech Master
 
NiMo's Avatar
 
Join Date: May 2004
Location: Luton, England
Posts: 1,704
Default

45m straight in to sweeper sounds like my track?

I have found a setting that likes to let the motor rev, but that is with a Tekin Pro.
I gear at 9.0:1 (85/17) with an Mi4, using the 12.25 rotor on 4dots.
I am quick out of corners and still have the speed, just as well as I cant afford new tyres at moment so am using ones others dispose off, which have often done 6 or more runs before I get them.
NiMo is offline   Reply With Quote
Old 05-04-2011, 02:24 PM   #437
Tech Regular
 
Join Date: Jun 2010
Location: UK
Posts: 286
Default

Quote:
Originally Posted by NiMo View Post
45m straight in to sweeper sounds like my track?
It is

I know the Tekin's like to be geared down alot but not sure about the LRP Stock Spec V2 or if the X12's like to rev, I heard they like to be geared up

I might be able to get to the track tomorrow afternoon so I'll try gearing way down.
S.A.W is offline   Reply With Quote
Old 05-11-2011, 08:00 PM   #438
Tech Rookie
 
Join Date: Mar 2011
Posts: 12
Default Correct Position of shims & o-ring on the rotor

Hello guys,

I dissambled the motor just to have a look inside. I notice that my motor comes with 2 shims and 1 o-ring, whereas the diagram in the manual and LRP website show only 1 shim and 1 o-ring. Why is that possible?

If my motor comes with 2 shims, should the correct assemble order be Shim,Shim, O-ring or Shim, O-ring, Shim?
keithlaw is offline   Reply With Quote
Old 05-12-2011, 02:07 AM   #439
Tech Initiate
 
Lagunikas's Avatar
 
Join Date: Jun 2009
Posts: 32
Default

Quote:
Originally Posted by keithlaw View Post
Hello guys,

I dissambled the motor just to have a look inside. I notice that my motor comes with 2 shims and 1 o-ring, whereas the diagram in the manual and LRP website show only 1 shim and 1 o-ring. Why is that possible?

If my motor comes with 2 shims, should the correct assemble order be Shim,Shim, O-ring or Shim, O-ring, Shim?
Shim, O-ring, Shim

If your o-ring its damaged, i found a replacement cheaper than LRP, HPI #75077, fits perfect, and works good

Bb
__________________
Xray T3 '11 // Nosram Pearl ISTC - X12 OctaWind - S9551
Tamiya F104 // Xerun 120A - GM Dr.Speed 17.5 - S9650
Mugen MRX4-R // Tekin RX8 - Tekin T8
Lagunikas is offline   Reply With Quote
Old 05-12-2011, 02:50 AM   #440
Tech Rookie
 
Join Date: Mar 2011
Posts: 12
Default

Quote:
Originally Posted by Lagunikas View Post
Shim, O-ring, Shim

If your o-ring its damaged, i found a replacement cheaper than LRP, HPI #75077, fits perfect, and works good

Bb
Thank you for your information. But how often will the o-ring get damaged ?
keithlaw is offline   Reply With Quote
Old 05-12-2011, 03:03 AM   #441
Tech Initiate
 
Lagunikas's Avatar
 
Join Date: Jun 2009
Posts: 32
Default

Quote:
Originally Posted by keithlaw View Post
Thank you for your information. But how often will the o-ring get damaged ?
When you run with high timing, and powerful motors (5.0 and below), O-ring breaks by centrifugal force, and shaft can move forward and backward

Sorry for my english

Bb
__________________
Xray T3 '11 // Nosram Pearl ISTC - X12 OctaWind - S9551
Tamiya F104 // Xerun 120A - GM Dr.Speed 17.5 - S9650
Mugen MRX4-R // Tekin RX8 - Tekin T8
Lagunikas is offline   Reply With Quote
Old 06-25-2011, 07:55 PM   #442
Tech Master
 
LonnyJ1950's Avatar
 
Join Date: Aug 2009
Location: Tucson, AZ. USA
Posts: 1,204
Default

I heard from a usually reliable source that an X-12 13.5 with the 4 dot insert has 30 degrees of static timing. Hard to believe, True? If so, how much advance can you program into your ESC for 1/12TH? Medium size track about 30 foot straight.
__________________
Lonny
LonnyJ1950 is offline   Reply With Quote
Old 06-26-2011, 12:29 AM   #443
Tech Fanatic
 
flatspunout's Avatar
 
Join Date: Jul 2007
Location: Somewhere between raising hell and Amazing Grace
Posts: 759
Trader Rating: 38 (100%+)
Default

I have 3 X12's, two 17.5's and a 4.5 non-octa, and all three have a small gap where the two halves of the can meet after I disassembled and cleaned them. It's very small and doesn't seem to affect the way any of them run (like hell ) but it's annoying and I know something isn't put together right. It's gotta be something simple that I'm missing!

-rocky b
flatspunout is offline   Reply With Quote
Old 06-27-2011, 08:30 AM   #444
rai
Tech Regular
 
Join Date: Apr 2010
Location: BSB
Posts: 339
Default

I have an X12 10.5 T motor and was just finished servicing the motor. I opened the motor with true care and it seems that the motor does not have any o-ring. I find it everywhere thinking the o-ring might have dropped somewhere but no o-ring was found. What is the possibility that the o-ring has disintegrate that eventually left the shim on it own?and should it be ok if different o-ring can be used to replace the standard one?

Last edited by rai; 06-27-2011 at 09:17 AM.
rai is offline   Reply With Quote
Old 06-27-2011, 01:06 PM   #445
Tech Addict
 
burito's Avatar
 
Join Date: Feb 2002
Location: Germany
Posts: 511
Default

@flatspunout: the narrow gap between the two case halves is normal and supposed to be there, don't worry.
The reason is that we want to clamp the stack and as the stack laminates have some tolerances the gap isn't exactly the same on all the motors but it's always there...

@rai: the X12 StockSpec doesn't have an o-ring, so you did not loose anything... only the modifieds have this o-ring.
__________________
Reto Koenig
burito is offline   Reply With Quote
Old 06-27-2011, 07:06 PM   #446
rai
Tech Regular
 
Join Date: Apr 2010
Location: BSB
Posts: 339
Default

Quote:
Originally Posted by burito View Post
@rai: the X12 StockSpec doesn't have an o-ring, so you did not loose anything... only the modifieds have this o-ring.
Really? But the manual shows the diagram of the motor assembly with the o-ring. Doesn't state the stock spec came without the o-ring. But if it is true, then i have no worries and can run the motor for practice session..yeeehhaaaa....
rai is offline   Reply With Quote
Old 06-27-2011, 07:35 PM   #447
Tech Fanatic
 
flatspunout's Avatar
 
Join Date: Jul 2007
Location: Somewhere between raising hell and Amazing Grace
Posts: 759
Trader Rating: 38 (100%+)
Default

Quote:
Originally Posted by burito View Post
@flatspunout: the narrow gap between the two case halves is normal and supposed to be there, don't worry.
The reason is that we want to clamp the stack and as the stack laminates have some tolerances the gap isn't exactly the same on all the motors but it's always there...

@rai: the X12 StockSpec doesn't have an o-ring, so you did not loose anything... only the modifieds have this o-ring.
Thanks burito...simple enough and makes sense to me...thanks for the quick response!

-rocky b
flatspunout is offline   Reply With Quote
Old 06-28-2011, 02:14 AM   #448
Tech Champion
 
smilekt's Avatar
 
Join Date: Aug 2006
Posts: 9,536
Trader Rating: 13 (100%+)
Default

hi burito

i have 13mm rotor run with 10.5t x12 .. i have broken rotor after 3 minute run. that happen on straight lane suddenly my car stop. is it the 13mm rotor easy broken?
__________________
Kuala Terengganu Rc Club Facebook
http://www.facebook.com/group.php?v=wall&gid=357083332025
smilekt is offline   Reply With Quote
Old 06-29-2011, 08:10 AM   #449
Tech Regular
 
Join Date: Oct 2010
Location: India
Posts: 480
Default

Guys,how would an X-12 7.5T or 8.5T do on a slash 2wd with an SPX8 and a noob driving it?
iamahuman is offline   Reply With Quote
Old 06-29-2011, 10:16 AM   #450
mok
Tech Master
 
mok's Avatar
R/C Tech Elite Subscriber
 
Join Date: Jul 2007
Location: Perth, Australia
Posts: 1,075
Trader Rating: 9 (100%+)
Send a message via MSN to mok Send a message via Skype™ to mok
Default

Quote:
Originally Posted by iamahuman View Post
Guys,how would an X-12 7.5T or 8.5T do on a slash 2wd with an SPX8 and a noob driving it?
say hello to your rear inside wheel unloading often
it will be fun though
__________________
XRAY T3'2011 / TEKIN RS PRO / LRP X12 / HYPERION SWIFT G3 RACE PACKS / FUTABA S9551 / SPEKTRUM DX3R
www.epracer.com - www.precc.org.au - www.westcoastmodelrallyclub.asn.au - www.onroadrccarclubbunbury.org.au
mok is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
‘FWR Racing Season’ FWR Northwest Racers 11302 08-23-2015 07:38 PM
LRP VECTOR 8 1/8 SCALE SYSTEM B.A. Racer Electric Off-Road 25 09-27-2010 10:12 PM
Hacker Brushless Motors 4.5, 6.5, 7.5, 17.5, 10.5, Tekin 10.5 hemi4me R/C Items: For Sale/Trade 15 06-22-2009 08:43 PM
Futaba Servos (BLS451, S9351, S9451) and Hacker, Novak and Tekin Motors hemi4me R/C Items: For Sale/Trade 10 06-13-2009 05:49 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 06:51 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net