RS4 3 EVO rear diff problem  
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All Forums >> RC Cars, Buggies, Trucks, Tanks and more >> HPI Racing >> HPI On-Road >> RS4 3 EVO rear diff problem
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RS4 3 EVO rear diff problem - 7/1/2007 3:06:46 PM   
HimotoRacingUSA



Posts: 12935
Joined: 2/27/2006
From: howard beach, NY, USA
Status: offline 		Hi guys,

i have an rs4 with an os .18 cvrx, i keep ripping out the pinion and larger rear diff gears, i did it within 3 tanks of fuel yesterday, i dont feel any heavy play in the gears, anyone have this problem, any suggestions?

thanks,

eddie

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RE: RS4 3 EVO rear diff problem - 7/1/2007 6:59:04 PM   
hpi apollo



Posts: 2639
Joined: 5/13/2006
From: Georgetown, KY, USA
Status: offline 		do you have the hardened gears? might want to get an aluminum gear case


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RE: RS4 3 EVO rear diff problem - 7/1/2007 8:53:39 PM   
HimotoRacingUSA



Posts: 12935
Joined: 2/27/2006
From: howard beach, NY, USA
Status: offline 		would you have a link for it, i just use the stock hpi a855. i was lucky to get a few tanks from it yesterday

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RE: RS4 3 EVO rear diff problem - 7/3/2007 3:40:55 AM   
brokespokes31


 

Posts: 36
Joined: 4/28/2007
From: kenosha, WI, USA
Status: offline 		i still use the stock 1 too , but i fill it with team assos. stealth lube. they last about a half gallon worth of driftn

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RE: RS4 3 EVO rear diff problem - 7/3/2007 4:10:29 AM   
RLMHPI


 

Posts: 318
Joined: 11/21/2005
From: MississaugaOntario, CANADA
Status: offline 		I am running the hardned ring and pinion from the .18ss it seemed like the ring gear was different then the original evo ring gear but i bolted it up and have ran over 10 tanks with no problems there are two little bumps on the stock gear that center the side gears inside the diff. The new hardned one didnt have them but it fit and has not given me any problems if you switch to the hardned u will understand what i am saying when you take it apart!!! The hardned gears are to the right you can see the tabs i am talking about on the stock gear to the left!!!

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RE: RS4 3 EVO rear diff problem - 7/3/2007 12:45:06 PM   
HimotoRacingUSA



Posts: 12935
Joined: 2/27/2006
From: howard beach, NY, USA
Status: offline 		thanks, i shimmed the big gear yesterday and will run over the weekend and see if that helps, even though they were slipping the teeth werent that bad so i put a shim to move it closer to the pinion and the mesh feels alot tighter.

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RE: RS4 3 EVO rear diff problem - 7/3/2007 2:09:43 PM   
SteveM


 

Posts: 45
Joined: 4/22/2002
From: Ottawa, ON, CANADA
Status: offline 		I had a problem with the front diff gears on my 3 Evo RTR sedan that was related to a missing ball bearing on the output shaft. You may want to check your diff to ensure there are two ball bearings otherwise the shaft will wobble and ruin the gears quickly like mine did.

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       Post #: 7

RE: RS4 3 EVO rear diff problem - 7/7/2007 11:09:53 PM   
HimotoRacingUSA



Posts: 12935
Joined: 2/27/2006
From: howard beach, NY, USA
Status: offline 		ok, i ran the car and got a 1/4 tank of fuel before they stripped again, i ordered the hardned steel ones so hopefully that will solve the problems, the mechanic at the lhs cant figure it out either, all bearing are there and good, dont understand but the hard steel ones should take care of this, expensive but worth it if it works!!!!!

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RE: RS4 3 EVO rear diff problem - 7/7/2007 11:25:44 PM   
hpi apollo



Posts: 2639
Joined: 5/13/2006
From: Georgetown, KY, USA
Status: offline 		buy an aluminum diff case too, keeps it from flexing and wearing


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95% of statistics are made up on the spot

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RE: RS4 3 EVO rear diff problem - 7/8/2007 5:28:11 PM   
HimotoRacingUSA



Posts: 12935
Joined: 2/27/2006
From: howard beach, NY, USA
Status: offline 		do you have a link for it?

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RE: RS4 3 EVO rear diff problem - 7/28/2007 2:57:16 AM   
gasdriverca



Posts: 53
Joined: 7/15/2007
From: Brantford, ON, CANADA
Status: offline 		This is good to know guys....I've got an rs4 3evo rtr on the way(brand new).by the sound of all this i'll double check mine for all bearings and screws etc.

(in reply to HimotoRacingUSA)
       Post #: 11

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