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 Post subject: O-rings in shocks
PostPosted: Wed Oct 25, 2017 06:07:04 
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Joined: Wed Oct 25, 2017 05:54:27
Posts: 4
New to X-ray, I bought a used Xb-2 and have upgraded it to 2017/18 spec. I am familiar with other brands to replace the O-rings when they are "swollen" Going through the shocks I replaced the O-rings with the partnumber o-rings listed in the manual 972030. I imediatelly noticed that the o-rings was to big in my experience with other brands fit of O-rings in the housing. Using "force" to get the o-rings to go into the housing and putting bottom cap on. The moment of the shaft was working less good than with the old o-rings.

I wounder if there is a change in O-rings done with the same partnumber or if the housing has been changed for later model´s? or what can be the root cause for the Swollen behavior at "get go".



Regards
Björn


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 Post subject: Re: O-rings in shocks
PostPosted: Wed Oct 25, 2017 07:03:56 
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team driver
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Joined: Tue Apr 25, 2006 16:50:44
Posts: 191
Location: Czech Republic
Hello

They go little harder in to body but they work very good. All our team use this o-ring on last races with very successful result.


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 Post subject: Re: O-rings in shocks
PostPosted: Wed Oct 25, 2017 18:16:41 
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Joined: Wed Oct 25, 2017 05:54:27
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Hi again Martin, I am not sure that I understand. Is there a modified O-ring that are put in the bags now when you buy the O-rings as a part compared to earlier? a running change? The one that I installd are not smoth in action, the old ones in the shock was not bad when I pulled them out but I expected the new ones to be smoother but I got the oposite??

Björn


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 Post subject: Re: O-rings in shocks
PostPosted: Thu Oct 26, 2017 08:33:39 
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Joined: Fri Sep 10, 2004 05:52:13
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Location: Trencin, Slovakia
Now in all XB2, XB4 (2018 specs) kits are included new updated (little thicker) o-rings which are available under new part number (#972031).


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 Post subject: Re: O-rings in shocks
PostPosted: Fri Oct 27, 2017 03:10:02 
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Joined: Wed Oct 25, 2017 05:54:27
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Hi Martin

After involving the Swedish RC community and buying more o-rings... I sitting with bags with different sizes of o-rings with the same partnumber. I am very familijar with running changes in Serpent using the same partnumber. Now I know my experince and gutfeeling teeling that is was not right, also was that Xray engineers due to that there is V2 version on the same partnumber. V2 version seem to me be right size, not tested yet found out last night at the track.


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 Post subject: Re: O-rings in shocks
PostPosted: Fri Oct 27, 2017 06:35:11 
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Joined: Fri Sep 10, 2004 05:52:13
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Location: Trencin, Slovakia
Under #972030 - V2 are packed the correct o-rings which should be used for on-road car shocks > now are marked as V2 because the previous batch was packed with little thicker o-rings which are now packed as #972031 and these o-rings should be used for off-road car shocks.


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 Post subject: Re: O-rings in shocks
PostPosted: Fri Oct 27, 2017 22:54:16 
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Joined: Wed Oct 25, 2017 16:10:10
Posts: 5
Just built my shocks last night on the hybrid kit, O rings fit nice. Shocks are smooth/not sticky, Piston not the greatest fit. Machined pistons will be ordered soon.


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 Post subject: Re: O-rings in shocks
PostPosted: Sat Oct 28, 2017 06:33:00 
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Joined: Wed Oct 25, 2017 05:54:27
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brano wrote:
Under #972030 - V2 are packed the correct o-rings which should be used for on-road car shocks > now are marked as V2 because the previous batch was packed with little thicker o-rings which are now packed as #972031 and these o-rings should be used for off-road car shocks.


Hi Brano

So it is totally clear to me... in my 2016 model which most likely had the stock O-rings installed with the Partnumber 972030 had the onroad O-rings? I am lost here.

I read this like, lets use the same O-ring for two applications both for the T4 shock body and the XB2/XB4 shock body. Lets modify the O-ring for the XB2/XB4 body and use the same partnumber, Oh wait that did not work that well. We need to have the original o-ring for the T4 shock body and the new o-ring for the XB2/XB4 shock body. How do we best do this so the users understand this, we have manuals out there and to download on our site.. We use V2 and 972031, this is maybe common knowledge to racers with years in the brand and "speaking Xrayish" but not for the man on the street.

I just looked at the pdf manual online for both the T4-18 and XB2-18 and it still states 972030, for me this is a low haning fruit to fix.


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 Post subject: Re: O-rings in shocks
PostPosted: Tue Nov 21, 2017 09:31:19 
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team driver
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Posts: 191
Location: Czech Republic
https://www.teamxray.com/teamxray/news/ ... %20Program


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