R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 05-25-2014, 09:13 PM   #1
Tech Elite
 
niznai's Avatar
 
Join Date: Feb 2009
Location: All over the place
Posts: 2,940
Default Xray gear diff O-rings

I have about three of these gear diffs and have noticed a propensity of the really thin O-rings to stretch to the point that I can't bloody put the diff back with the O-ring. What is going on, Xray?! It happens in diffs that use Xray oil or other oils (not that there should be any difference). Does anyone else have this problem?

And is the O-ring really necessary? The diff has a paper gasket like all other diffs which I imagine should be enough (didn't notice any difference when I run a diff without the O-ring). What is the point of that stupid O-ring that doesn't even stay put?

I think I just found another area that needs a little bit of optimising, Xray.
__________________
Team Greasy Weasel

The best upgrade to any car is some driver skill.
niznai is offline   Reply With Quote
Old 05-25-2014, 09:22 PM   #2
Tech Elite
 
klaymon's Avatar
 
Join Date: Nov 2009
Location: Columbus, OH
Posts: 2,330
Trader Rating: 71 (100%+)
Default

I've never run an o-ring in any of the T4 cars I've owned and have never leaked a drop.
klaymon is offline   Reply With Quote
Old 05-25-2014, 09:37 PM   #3
Tech Elite
 
niznai's Avatar
 
Join Date: Feb 2009
Location: All over the place
Posts: 2,940
Default

Thank you, I suspected as much.
__________________
Team Greasy Weasel

The best upgrade to any car is some driver skill.
niznai is offline   Reply With Quote
Old 05-25-2014, 09:47 PM   #4
Tech Master
 
mild seven's Avatar
 
Join Date: Mar 2005
Location: Australia
Posts: 1,035
Trader Rating: 63 (100%+)
Send a message via MSN to mild seven
Default

I have built them without O ring with no problems. Otherwise you pretty much have to change the o ring with every rebuild.
mild seven is offline   Reply With Quote
Old 05-25-2014, 09:56 PM   #5
Tech Elite
 
Odin544's Avatar
 
Join Date: Apr 2011
Location: Kennewick, Washington
Posts: 3,166
Trader Rating: 93 (100%+)
Default

Quote:
Originally Posted by niznai View Post
I have about three of these gear diffs and have noticed a propensity of the really thin O-rings to stretch to the point that I can't bloody put the diff back with the O-ring. What is going on, Xray?! It happens in diffs that use Xray oil or other oils (not that there should be any difference). Does anyone else have this problem?

And is the O-ring really necessary? The diff has a paper gasket like all other diffs which I imagine should be enough (didn't notice any difference when I run a diff without the O-ring). What is the point of that stupid O-ring that doesn't even stay put?

I think I just found another area that needs a little bit of optimising, Xray.
You've just discovered what most Xray users have known for several years. No O-ring is necessary. I would guess you don't follow the Xray threads? As this gets asked quite a bit in them.

I prefer to use a little green slime or equivalent on the paper gasket.
__________________
Xray - ORCA - Avid RC - MaxFX Paint
TriCitiesRC.com
Odin544 is offline   Reply With Quote
Old 05-25-2014, 11:37 PM   #6
Tech Elite
 
niznai's Avatar
 
Join Date: Feb 2009
Location: All over the place
Posts: 2,940
Default

No, I don't really follow any particular threads, I confess. Nor does Xray it seems, since they haven't addressed the issue. So I feel I'm in good company.

Thank you for your input though.
__________________
Team Greasy Weasel

The best upgrade to any car is some driver skill.
niznai is offline   Reply With Quote
Old 05-26-2014, 04:15 AM   #7
Tech Elite
 
Skiddins's Avatar
 
Join Date: Feb 2006
Location: Windsor, UK
Posts: 4,761
Default

The O-ring, when fitted correctly (which does involve some luck) works fine.

The problem is not that it swells etc, but that part of it gets 'dragged' out of position as the two halves are gently placed together.
Like many others (including the team drivers it would seem) I just use the paper gaskets which work fine provided they aren't damaged etc.

Also make sure you tighten the screws diagonally and slowly to make sure it is tightened up evenly.

Skiddins
__________________
Xray T4'18, T4'14 (Wet Car)
Xray X12 2018
Xray X1'16
wlrc.co.uk (West London Racing Centre)
RCDisco.co.uk
Skiddins is offline   Reply With Quote
Old 05-26-2014, 04:32 AM   #8
Tech Elite
 
niznai's Avatar
 
Join Date: Feb 2009
Location: All over the place
Posts: 2,940
Default

Thanks, Skid. I have built these diffs (from new) a while ago and just wanted to change the oil in one of them, that's why I took it apart and found I couldn't get the stupid ring back. Took out the others to check on the swelling situation and turned out they were too swollen. I had another two 'rings lying around collecting dust (new spares) so I chucked them in, but I won't waste any more money on these pieces of merde anymore.

The way I check the diffs are tightened correctly is by spinning them on a bearing. If they spin out of true, something's amiss.
__________________
Team Greasy Weasel

The best upgrade to any car is some driver skill.
niznai is offline   Reply With Quote
Old 05-26-2014, 08:38 AM   #9
Tech Elite
 
Lonestar's Avatar
 
Join Date: Oct 2001
Location: Switzerland
Posts: 2,364
Trader Rating: 13 (100%+)
Default

Quote:
Originally Posted by niznai View Post
No, I don't really follow any particular threads, I confess. Nor does Xray it seems, since they haven't addressed the issue. So I feel I'm in good company.
Niznai 1 - Odin 0
__________________
When the flag drops, the BS stops.

The train stops at the train station. The bus stops at the bus station. In my office I have a workstation.
Lonestar is offline   Reply With Quote
Old 05-26-2014, 09:01 AM   #10
Tech Master
 
locked's Avatar
 
Join Date: Mar 2010
Location: Toronto
Posts: 1,758
Trader Rating: 1 (100%+)
Default

The o-ring isn't necessary, but I always use them anyway. They are a one time use sort of thing though. If you use them, use a new one every time you rebuild. I put it on the opposite side from what the instructions tell you. I find it stays put better that way while assembling.
__________________
Dave Locke
Team PerformanceHobbies.ca | ORCA RC | Bodies by Brandon | Team Meeting
XRAY T4'15 x2 | XRAY XB4 | XRAY XB8E | XRAY XB8
locked is offline   Reply With Quote
Old 05-27-2014, 05:33 AM   #11
Tech Champion
 
F. Mendoza's Avatar
 
Join Date: Apr 2006
Location: SoCal
Posts: 7,232
Trader Rating: 79 (100%+)
Default

I had the same issue the first time I rebuilt a diff. A fellow XRay owner said "let me help you". When I gave him the ring he tossed it in the trash can. I rethought he was playing. He really tossed it. Never had any diff leaks since.
__________________
RC America - Xray - Hudy - Gravity RC - KO Propo - Super Rad Graphics

Mr. Shookie goes home 10-06-08. Bill Levinson 4-14-15
F. Mendoza is offline   Reply With Quote
Old 05-27-2014, 03:10 PM   #12
Tech Master
 
malcnz's Avatar
 
Join Date: Sep 2006
Location: DUNEDIN, NewZealand
Posts: 1,299
Default

I run a CSO and its a copy of the xray but better and you can get a whole bagful of orings...must be at least 10 in there for a few dollars and got them through RC Mushroom...but yeah the diffs dont leak without them anyway.
__________________
SCHUMACHER MI5 EVO/TEAM POWERS/SANWA/DX4R PRO.

SERPENT F110/TEAMPOWERS 21.5.

LOSI 22 2.0/TEAM POWERS 8.5
malcnz is offline   Reply With Quote
Old 05-27-2014, 03:41 PM   #13
Tech Champion
 
F. Mendoza's Avatar
 
Join Date: Apr 2006
Location: SoCal
Posts: 7,232
Trader Rating: 79 (100%+)
Default

Quote:
Originally Posted by malcnz View Post
I run a CSO and its a copy of the xray but better and you can get a whole bagful of orings...must be at least 10 in there for a few dollars and got them through RC Mushroom...but yeah the diffs dont leak without them anyway.
Maybe that is why you get at least 10 of them for a few bucks. Nobody needs, uses, or want them. You say so yourself, "the diffs don't leak".

PS - copies are just that, copies.
__________________
RC America - Xray - Hudy - Gravity RC - KO Propo - Super Rad Graphics

Mr. Shookie goes home 10-06-08. Bill Levinson 4-14-15
F. Mendoza is offline   Reply With Quote
Old 05-27-2014, 06:56 PM   #14
Tech Master
 
malcnz's Avatar
 
Join Date: Sep 2006
Location: DUNEDIN, NewZealand
Posts: 1,299
Default

Quote:
Originally Posted by F. Mendoza View Post
Maybe that is why you get at least 10 of them for a few bucks. Nobody needs, uses, or want them. You say so yourself, "the diffs don't leak".

PS - copies are just that, copies.

Just giving an alternative as I could imagine the xray ones are expensive.

I guess a new car is always going to be a copy of something else but you get so much more for way less money than an xray and after a year of running its still as tight as day one
__________________
SCHUMACHER MI5 EVO/TEAM POWERS/SANWA/DX4R PRO.

SERPENT F110/TEAMPOWERS 21.5.

LOSI 22 2.0/TEAM POWERS 8.5
malcnz is offline   Reply With Quote
Old 05-27-2014, 10:48 PM   #15
Tech Regular
 
P.I.M.P's Avatar
 
Join Date: Jul 2009
Posts: 464
Trader Rating: 14 (100%+)
Default

Quote:
Originally Posted by niznai View Post
I have about three of these gear diffs and have noticed a propensity of the really thin O-rings to stretch to the point that I can't bloody put the diff back with the O-ring. What is going on, Xray?! It happens in diffs that use Xray oil or other oils (not that there should be any difference). Does anyone else have this problem?

And is the O-ring really necessary? The diff has a paper gasket like all other diffs which I imagine should be enough (didn't notice any difference when I run a diff without the O-ring). What is the point of that stupid O-ring that doesn't even stay put?

I think I just found another area that needs a little bit of optimising, Xray.
if you need to reuse after it has swelled cut a small section out and ca back together works fine
__________________
Vbc wildfire D06
clinton livingstone
P.I.M.P is offline   Reply With Quote
Reply



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 01:11 AM.


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