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Center Spider Diff Spur Gear
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triplebvalp



Joined: 11 Mar 2006
Posts: 333
Location: Valparaiso, FL

PostPosted: Sat Nov 07, 2009 2:53 pm    Post subject: Center Spider Diff Spur Gear Reply with quote

Hey Folks,

I need a new spur gear for my center spider diff ... the Hyper ST Pro manual lists the part number as Hohao # 86231 ... but, there is not a cross reference for that number to an Ofna number.

The manual actually lists the center spur as part Hobao # 86225 with references Ofna # 27225 but, that is a 4 screw spur gear where as the spider spur gear is 6 screw.
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Casketman



Joined: 23 Jul 2006
Posts: 495
Location: Braidwood,IL,USA

PostPosted: Sat Nov 07, 2009 6:24 pm    Post subject: Reply with quote

Did you drop a spider diff in there because I dont believe the ST came with a spider. At least mine didnt and the Exploded View I see on Nitrohouse doesnt show it having a spider diff either.

So if you did drop one in there. You might want to find out what car that came out of or just look here for spider diff spur gears.
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triplebvalp



Joined: 11 Mar 2006
Posts: 333
Location: Valparaiso, FL

PostPosted: Sat Nov 07, 2009 6:29 pm    Post subject: Reply with quote

Nope, didn't drop a spider diff from a different vehicle in it. My Hyper ST Pro came with a spider center diff. BTW, got it new in the box.
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Casketman



Joined: 23 Jul 2006
Posts: 495
Location: Braidwood,IL,USA

PostPosted: Sat Nov 07, 2009 6:31 pm    Post subject: Reply with quote

Then hit that second link I have underlined there.
Nitrohouse doesnt have a spider spur listed as a stock replacement part for the ST.
Hell,Ofna nor Nitro have it listed as for sale now either.
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smith



Joined: 27 Apr 2008
Posts: 156
Location: Havelock, NC

PostPosted: Sun Nov 08, 2009 5:11 am    Post subject: Reply with quote

You could call nitrohouse and talk to them they could get you one I sure but if I was you it would be a great time to get a new diff Jamman case and kyosho lightweight spur gear.
Thats what I would do.
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triplebvalp



Joined: 11 Mar 2006
Posts: 333
Location: Valparaiso, FL

PostPosted: Sun Nov 08, 2009 5:30 am    Post subject: Reply with quote

smith wrote:
You could call nitrohouse and talk to them they could get you one I sure but if I was you it would be a great time to get a new diff Jamman case and kyosho lightweight spur gear.
Thats what I would do.


Which Jammin ? Can you provide a part # ?

BTW, finally found it at Nitrohouse:

http://www.nitrohouse.com/catalog/product_info.php?products_id=10535
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smith



Joined: 27 Apr 2008
Posts: 156
Location: Havelock, NC

PostPosted: Sun Nov 08, 2009 7:42 am    Post subject: Reply with quote

here is the case

http://www.amainhobbies.com/product_info.php/cPath/1_25_132/products_id/3768/n/OFNA-Differential-Case

Spur Gear

http://www.amainhobbies.com/product_info.php/cPath/1_25_712/products_id/6779/n/Kyosho-Light-Weight-52T-Center-Spur-Gear-ST-R

internals

http://www.amainhobbies.com/product_info.php/cPath/1_25_635/products_id/6444/n/OFNA-Bevel-Gear


I beleave you can also use the stock front and rear diff cases that come with the ST but im not 100% sure on that as I have never tryed it.
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triplebvalp



Joined: 11 Mar 2006
Posts: 333
Location: Valparaiso, FL

PostPosted: Sun Nov 08, 2009 10:10 am    Post subject: Reply with quote

Hey Smith,

That's great info ... Will my existing gaskets transfer to the Jammin diff ?
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smith



Joined: 27 Apr 2008
Posts: 156
Location: Havelock, NC

PostPosted: Sun Nov 08, 2009 11:51 am    Post subject: Reply with quote

Im sorry I forgot about that no they will not work

http://www.amainhobbies.com/product_info.php/cPath/1_25_132/products_id/3690/n/OFNA-Differential-Gaskets-3

Im pretty sure that the inside O rings will work just fine but I can not rember. Hope this helps
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triplebvalp



Joined: 11 Mar 2006
Posts: 333
Location: Valparaiso, FL

PostPosted: Sun Nov 08, 2009 1:56 pm    Post subject: Reply with quote

Hey smith,

I really appreciate your help ... I should do this but, adding all the parts up exceed the cost of a complete spider diff with spur gear off of flea bay.

I got almost 2 years worth of racing from the original ... I expect I will be replacling the Hyper ST in the near future so, pull the trigger on the flea bay replacement.
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smith



Joined: 27 Apr 2008
Posts: 156
Location: Havelock, NC

PostPosted: Sun Nov 08, 2009 5:16 pm    Post subject: Reply with quote

Thats cool know problem I was thinking of going with a different truggy but I love my ST so much I cant find the heart to get rid of it.
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triplebvalp



Joined: 11 Mar 2006
Posts: 333
Location: Valparaiso, FL

PostPosted: Sun Nov 08, 2009 5:34 pm    Post subject: Reply with quote

You bet, the Hyper ST is a GREAT truggy and I will probably retire mine as a wore out shelf queen. But, that is not the immediate future. I will continue to race mine until Ofna comes out with it's replacement.

I have been looking at the Jammin X2 ... but, not yet
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H9



Joined: 19 Jul 2009
Posts: 99
Location: Perth, Western Australia

PostPosted: Sun Nov 08, 2009 6:11 pm    Post subject: Reply with quote

The ST Pro in australia came with a center Spider diff too. Looks the same as the Hyper 8 spider diffs, but with a different crown wheel of course. Not sure if the internal gears are the same or not, I'll have a nosey when I strip it down later this week (the ST that is).

Another good day with the beast yesterday (Sunday), 4th overall out of 17 truggy entries!
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smith



Joined: 27 Apr 2008
Posts: 156
Location: Havelock, NC

PostPosted: Mon Nov 09, 2009 12:36 pm    Post subject: Reply with quote

H9 nice job

I thank most of the Pro kits came with them im did. But im not sure I am the only person that I have seen in eastern North Carolina with one.
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DJ



Joined: 22 Jun 2006
Posts: 979

PostPosted: Tue Nov 10, 2009 8:22 am    Post subject: Reply with quote

Here are parts to refer to on your spider diff.

S.D. assembling tool 19346
screws for S.D. 2.6x 21.5 mm 19444
S.D. case w/o-rings and shims 19441
gears, bevel set for S.D. (complete with pins,pin hub and shims)19440
52 tooth spur gear for S.D.(comes with bearing on the spur side) 27062

hope this is what your are looking for.
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