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Old 10-28-2005, 01:10 AM   #13216
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Quote:
Originally Posted by rc-zombies
the force is strong with this car..
and the purple makes you go faster...
Yes, the force. Bind all the energies of the people and the things that surround you. Use the energies of the drivers and their cars. It is the force. Try doing the jedi mind tricks too. It's very effective. Command your competitors to swerve their cars on the wrong way and hit each others' cars on the pavement, then you win!

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Old 10-28-2005, 01:44 AM   #13217
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anyone using futaba 9550 servo on their pro4?
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Old 10-28-2005, 01:48 AM   #13218
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About 2 months ago I got a used Pro 4, and like all the used cars I get I immediately took it completely apart. Well, after 2 months and several shipments of replacement parts I just got the drivetrain together my question is how free should it spin? Appreciate the insight!
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Old 10-28-2005, 02:53 AM   #13219
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It should be very free, the trick is to play with the shims on both diffs.
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Old 10-28-2005, 08:58 AM   #13220
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Quote:
Originally Posted by ali_g
anyone using futaba 9550 servo on their pro4?
at first I did... you'll have to add 1mm spacer under each of the servo mounts to properly secure it.
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Old 10-28-2005, 09:38 AM   #13221
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It should be very free, the trick is to play with the shims on both diffs.
What is very free? For example if I spin the gear should it rotate at least once on its own?
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Old 10-28-2005, 12:33 PM   #13222
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When the wheels are on, spin the wheels as hard as you can and the wheels should spin for quite a few seconds. Mine spin for 3 or 4 seconds, but ive seen a lot better on other pro4's.

Matt
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Old 10-28-2005, 12:36 PM   #13223
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And if you put your finger on the spur gear and turn it very slowly, you shouldnt feel any notches or rough spots in the drivetrain.

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Old 10-28-2005, 12:55 PM   #13224
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Quote:
Originally Posted by Matt Pocknell
When the wheels are on, spin the wheels as hard as you can and the wheels should spin for quite a few seconds. Mine spin for 3 or 4 seconds, but ive seen a lot better on other pro4's.

Matt
spinning it with the wheel on is not good way. the wheel's centrifical force is doing the work. I can put a heavy wheel and it will spin idefinately.
no wheel, no motor.. I spin the driveshaft and it should spin for several revolutions.
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Old 10-28-2005, 02:01 PM   #13225
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Default gearing

Could someone plz give me a general idea of what pinion I should use on the Novak 5.5 motor with pro4 stock spur at a medium size parking lot track? thanks.
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Old 10-28-2005, 02:03 PM   #13226
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Quote:
Originally Posted by Matt Pocknell
And if you put your finger on the spur gear and turn it very slowly, you shouldnt feel any notches or rough spots in the drivetrain.

I feel a lot of notches with the wheels off Any ideas on how to improve it?
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Old 10-28-2005, 02:06 PM   #13227
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Quote:
Originally Posted by jamescam
I feel a lot of notches with the wheels off Any ideas on how to improve it?
gears look ok..nothing broken or missing...?
bearings clean?
apply diff grease on the gears.?
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Old 10-28-2005, 02:10 PM   #13228
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Not only are the bearings CLEAN, but is one out of round? My friend took a hit in his TC3, and when we stripped it down and cleaned it, we turned the bearings and felt a few of the balls were definately ovaled. It gives it a super fast "pusling" kind of feeling when you spin the bearing.
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Old 10-28-2005, 03:57 PM   #13229
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Cool Rear end loose

I just finished building my RS4, man is it fast. Only one problem, if I give it too much throttle the rear-end gets very loose. Also when I release the throttle it swaps ends. I haven't raced on-road in quite a while and I have no idea where to begin. Any suggestions? Thanks
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Old 10-28-2005, 04:18 PM   #13230
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Quote:
Originally Posted by rc-zombies
spinning it with the wheel on is not good way. the wheel's centrifical force is doing the work. I can put a heavy wheel and it will spin idefinately.
no wheel, no motor.. I spin the driveshaft and it should spin for several revolutions.
Oops! forgot about that. Could be possible (if anyone can be bothered) to keep a pair of plain wheels for testing this sort of thing. Nah! Think i'll just stick with just spinning the shaft

Matt
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