XRAY - Model racing cars

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 Post subject: Re: Final solution for the 808 diff bearing problem
PostPosted: Thu Aug 19, 2010 00:58:15 
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Joined: Sat Jul 03, 2010 00:10:26
Posts: 7
Bren Ralls wrote:
The drive pin point & loctite you understand as well as I but many didn't.



whats this? dont see anything in the tech tips?


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 Post subject: Re: Final solution for the 808 diff bearing problem
PostPosted: Thu Aug 19, 2010 08:57:45 
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Joined: Sat Oct 21, 2006 16:32:03
Posts: 846
Location: UK
The xt8 & some options for the ec required the drive pins to be secured by just a grub screw, neither where secured like the 808. Unless you used a good quality loctite the pin would vibrate out, a tip was never done on this as most dremeled a small flat on the pins which solved the problem. Xray have now released a specific pin now with groove.


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 Post subject: Re: Final solution for the 808 diff bearing problem
PostPosted: Thu Aug 19, 2010 17:56:49 
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Joined: Mon May 19, 2008 22:34:46
Posts: 17
Location: NORWAY
Mader wrote:
The thread is just below this one.(2010 pinion bearing problems) I have posted pictures there and there are more to come later today. Heres the deal, I wanted people to be able to fix this issue and in the end still have an Xray 808. These sleeves are easy to make and are the perfect answer. the only non Xray parts on my car are the center drive shafts. They are off an MP9. Even the center brace is usable with slight mod to the front. 2 XT8 pinion gears and 2 sleeves is all you need. All the rest of your 808 parts work perfect. :lol:


My Xray is just as much as Your Xray :-). Its all Xray parts except the axels. Mine are MP9 just like Yours. I just used XB8 bulkheads instead of 808 bulkheads. Your idea is very nice, but not everyone has the tools to make sleeves like You did. I made an example with parts everybody can buy. Works great, and I am gonna race two weekends in a row now and will see if everything holds:-)

I hope Xray will make such sleeves and new axels, LOL......


And to NICKB, I guess why You dont have this problem, thats beacause You dont drive finals in 45 min or 1 hours races. Many in my club have 808 and dont have this problem just like You, but they never race more than 10-15 min before they take a brake for coffee and some cigarettes :-)

Its after some hard driving about 30 min the bearings run extremely hot and the grease/lube is burned of. Your bearings just gets to be cold before You race again.


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 Post subject: Re: Final solution for the 808 diff bearing problem
PostPosted: Sun Aug 22, 2010 02:02:17 
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Joined: Fri May 09, 2008 13:37:24
Posts: 130
Location: Ohio
My original plan was similar to what you did but finding NEW parts to do what I wanted was a real challenge. I could buy all the ragged out Xt8's I wanted on Ebay but Who wants someone elses worn out ride. In the end I feel better about this setup. Just got home from my first race on this setup and it was flawless! :lol:


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 Post subject: Re: Final solution for the 808 diff bearing problem
PostPosted: Sun Aug 22, 2010 22:56:54 
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Joined: Mon May 19, 2008 22:34:46
Posts: 17
Location: NORWAY
Me too :-)

Ran the whole day and no problemo whatsoever. Gonna race again next weekend and its a release to not have to check the pinion bearings EVER AGAIN..... LOL


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 Post subject: Re: Final solution for the 808 diff bearing problem
PostPosted: Mon Aug 23, 2010 14:59:32 
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Joined: Tue Sep 04, 2007 01:26:16
Posts: 371
Location: nottingham U.K
Good to hear. Did it handle any differently?


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 Post subject: Re: Final solution for the 808 diff bearing problem
PostPosted: Tue Aug 24, 2010 02:38:53 
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Joined: Fri May 09, 2008 13:37:24
Posts: 130
Location: Ohio
My setup does not change the car so it felt exactly the same. The piece of mind felt way different though! :lol:


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 Post subject: Re: Final solution for the 808 diff bearing problem
PostPosted: Wed Sep 08, 2010 20:16:25 
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Joined: Mon May 19, 2008 22:34:46
Posts: 17
Location: NORWAY
The car reacts as normal, no difference. Except it rolls easyer after You releace the gasthrottle into corners beacause of the new smooth driveline. Extra milage is also a nice bonus.
I have ran 4 gallons on my setup and still working perfectly. Its a relif not to have to check the bearings. No more long nights worring about the bearing problem. I finished 6. in the nationals round 2, and 5. in nationals run 3, and two clubraces as well WITHOUT a single problem.


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 Post subject: Re: Final solution for the 808 diff bearing problem
PostPosted: Thu Sep 09, 2010 14:58:52 
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Joined: Wed Dec 03, 2008 02:25:20
Posts: 97
Location: Ireland
extra wrote:
Mader wrote:
And to NICKB, I guess why You dont have this problem, thats beacause You dont drive finals in 45 min or 1 hours races. Many in my club have 808 and dont have this problem just like You, but they never race more than 10-15 min before they take a brake for coffee and some cigarettes :-)

Its after some hard driving about 30 min the bearings run extremely hot and the grease/lube is burned of. Your bearings just gets to be cold before You race again.


I dont smoke! :D
Nah I race 45 mins every week in total and national event 5 a year plus any other special events e.g. enduro. or PPR race.
Seriously 808 2009 spec is good!
I just check for play when do the diffs practically every week.
Nick


Last edited by NickB on Thu Sep 09, 2010 15:00:45, edited 1 time in total.

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 Post subject: Re: Final solution for the 808 diff bearing problem
PostPosted: Thu Sep 09, 2010 15:00:10 
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Joined: Wed Dec 03, 2008 02:25:20
Posts: 97
Location: Ireland
Mader wrote:
Do the tracks in Ireland resemble this?Image



:shock: :shock:
Thats that track with the helicopter footage and the song! is there a high resolution version of that video anywhere!??
Nick


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 Post subject: Re: Final solution for the 808 diff bearing problem
PostPosted: Fri Sep 10, 2010 17:24:02 
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Joined: Thu May 13, 2010 00:20:59
Posts: 3
please Mr. hudy, made us a hudy spring steel CVD like xt8 style with dimensions, 84mm, 108mm and 113mm to fix this diff bearing problem in xb808 08, 09, and 10 specs. PLEASE!


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 Post subject: Re: Final solution for the 808 diff bearing problem
PostPosted: Sat Sep 11, 2010 14:37:03 
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Joined: Fri May 09, 2008 13:37:24
Posts: 130
Location: Ohio
At this point I would just like to see a new truggy with a better driveline. I was one of the guy's before who was really hoping for a new truck release. I am glad now that Xray waited. Now the chances of it having driveline issues will have to be less.


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 Post subject: Re: Final solution for the 808 diff bearing problem
PostPosted: Sun Sep 12, 2010 17:24:38 
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Joined: Fri May 09, 2008 13:37:24
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Location: Ohio
Thats that track with the helicopter footage and the song! is there a high resolution version of that video anywhere!??
Nick


Here it is Nick. http://www.youtube.com/watch?v=PoLJNtnpFmY


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 Post subject: Re: Final solution for the 808 diff bearing problem
PostPosted: Sat Oct 16, 2010 19:16:51 
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Joined: Sun Jul 25, 2010 10:52:12
Posts: 31
Hello,

I have followed XRAY's solution concerning the difd bearings by adding grease between the pinion bearings, and in the metal ring provided by the 2010 specs. I did everything correctly but I see that now the wheels don't spin freely since the grease slows them down. Is this natural/correct?

Thanks


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 Post subject: Re: Final solution for the 808 diff bearing problem
PostPosted: Sat Oct 16, 2010 19:41:23 
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Joined: Mon May 19, 2008 22:34:46
Posts: 17
Location: NORWAY
3 bearings have much more resistance than 2 bearings. So Your assumptions are correct.

Rumors say that Xray will come with a new racecar next year. And with a new driveline just like the one I made here. A brand new car and not an upgrade.


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 Post subject: Re: Final solution for the 808 diff bearing problem
PostPosted: Sat Oct 16, 2010 19:46:36 
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Joined: Sun Jul 25, 2010 10:52:12
Posts: 31
extra wrote:
3 bearings have much more resistance than 2 bearings. So Your assumptions are correct.

Rumors say that Xray will come with a new racecar next year. And with a new driveline just like the one I made here. A brand new car and not an upgrade.


Next year beging middle or end of yer if you know?


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 Post subject: Re: Final solution for the 808 diff bearing problem
PostPosted: Sat Oct 16, 2010 21:39:19 
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Joined: Mon May 19, 2008 22:34:46
Posts: 17
Location: NORWAY
Not sure, but usually around december/january. No point of releasing a new car in the middle of a season.


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 Post subject: Re: Final solution for the 808 diff bearing problem
PostPosted: Sun Oct 17, 2010 00:19:53 
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Joined: Fri Dec 28, 2007 16:16:47
Posts: 395
Location: Estonia, Tallinn
Just saw Josh Wheeler's car pics from NeoBuggy. Guess what...


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 Post subject: Re: Final solution for the 808 diff bearing problem
PostPosted: Sun Oct 17, 2010 14:51:26 
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Joined: Fri May 09, 2008 13:37:24
Posts: 130
Location: Ohio
Lauri can you post a link to that photo on here. I hate trying to navigate that website?


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 Post subject: Re: Final solution for the 808 diff bearing problem
PostPosted: Sun Oct 17, 2010 15:19:43 
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Location: Portugal, Azores
:twisted: :twisted: :twisted: :twisted: :twisted: :twisted: :twisted: :twisted: :twisted: So happy!

Image

Image

Image


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