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Old 02-17-2008, 09:38 PM   #1696
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for what its worth, i think the phi diffs work better than the rdx diffs but do need a little more maintenance. It 'looks' like you could throw rdx diffs in there instead if you are looking for less work, but the phi diffs will perform better if you keep up with them.
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Old 02-17-2008, 10:21 PM   #1697
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for what its worth, i think the phi diffs work better than the rdx diffs but do need a little more maintenance. It 'looks' like you could throw rdx diffs in there instead if you are looking for less work, but the phi diffs will perform better if you keep up with them.
what he said.
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Old 02-18-2008, 05:35 AM   #1698
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Last time I pulled them apart (after 3 race days) the thrust bearing plates had a groove in them. I used a flat surface and 1000 grit sandpaper to remove them. I suppose if I did that every race day it would save the balls. But why is the diff so exposed? What is the benefit compared to getting more dirt in them? For a $500 car to ruin the thrust bearing after a few race days seems kind of dumb.
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Old 02-18-2008, 06:52 AM   #1699
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Has Corally made a better thrust bearig yet? Ha anyone tried the step bearing trick? Does it hold up better?
I've been running the flanged bearing in my car since october. They work fine in the rear diff. The only problem I noticed was trying to run 1 in the front of a foam car where the diff needs to be real tight. It seems that is too much side pressure.

Rebuilds are so easy with the bearing.....just pop in a new bearing every few race days and while you have it apart put a little grease on the diff balls.
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Old 02-18-2008, 06:59 AM   #1700
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Default Setup

Anybody Have A Good Setup For Rubber Tire Carpet Medium track Medium Traction
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Old 02-18-2008, 07:17 AM   #1701
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Anybody Have A Good Setup For Rubber Tire Carpet Medium track Medium Traction
Look a couple pages back or so for Josh H's setup. Works amazingly well. Just look in the notes if the rearend is a little loose on lower traction
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Old 02-18-2008, 08:24 AM   #1702
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In addition, it would seem as though using a steel thrust 'might' help as the ceramic will wear a groove much faster.

again, for those of you who are really struggling with the phi diff, go grab an RDX diff and pop that in there. It's a 'drop in' and again, I think the phi diff works better off a fresh build, but the rdx diff will last for a long long long long time with no love.

also be careful on over packing the diff with grease as it will give a 'funky' wear to the plates as the grease leaves and the diff settles in.




very recently I retired from racing, but I have to say that my Corally gave me WAY more life than it should have. In 3 years of running it the most I broke were arms. using a specialized chassis, lower front tower, 6degree blocks and thats about it for upgrades, Corally definately passed the 'Bear' quality testing.

Thanks to all the Corally guys for turning out one of the single best products yet! When i come out of my hibernation I will look forward to the "Omega" or "Zeta" model that is sure to be winning races at that time.

Through Novak races, nationals, vegas and local events I've been fortunate enough to be in touch with Jeff Brown and all the Corall guys who have helped me out so much. Its been very nice to see the quality of people match the quality of product.

see you guys next year!
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Old 02-18-2008, 09:43 AM   #1703
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im trying to run 17.5s, what spur are most running to get optimal gearing. with stock pulleys.. track dimesnsions(90X 80)and what brand spur fits best without having to modify anything.

help will be appreciated.. thanks
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Old 02-18-2008, 09:46 AM   #1704
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A 76 tooth PRS fits really well.
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Old 02-18-2008, 10:25 AM   #1705
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sorry.. forgot rubber tire setup...
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Old 02-18-2008, 07:16 PM   #1706
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Default Servos fitment in Phi

Right now I have the Futaba 9550 servo in my Phi cars. But, I was looking for a bit more speed and torque; so, I bought a JR DZ9000S to try. Only problem is that it does not fit.

Has anyone tried the Futaba BLS451? Does it fit?
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Old 02-18-2008, 07:25 PM   #1707
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They should fit. I think I remember putting one in my car a while back.

-Korey
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Old 02-18-2008, 09:50 PM   #1708
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Not trying to beat a dead horse, when the parts are new, the Phi diffs are stellar. It took 3 race days to start to degrade. I was cleaning them every 2 race days, until eventually cleaning no longer took care of the feeling that the diff had flat spots in it.

Traditionally, I spray off the sludge on a white disposable shop rag. What I noticed was the plating on the thrust washers was flaking off. When that happens, the hardened coating no longer exists on the thrust washers. If you continually replace the thrust washers, that will probably not be a problem. However, I got tired of going that route, and did the 1/4 x 3/8 flanged bearing route. No problems since.
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Old 02-18-2008, 11:26 PM   #1709
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Quote:
Originally Posted by Korey Harbke View Post
They should fit. I think I remember putting one in my car a while back.

-Korey
The BLS451? LOL
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Old 02-19-2008, 12:32 AM   #1710
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Yea, we have a bunch in at work so I was looking at getting one. When I mean a while back I mean a few months hahaha. I'm pretty sure it will fit. It's not bigger than most servos like the newer jr servos are... The jr servos are about 2mm bigger in every direction.

I have run the bls451s in a heli though... they are a lot more precise around center. They're really nice.

-Korey
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