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Old 04-06-2011, 07:04 PM   #5551
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Has anyone converted their diff gears to the ofna spiral diff gear and pinion? I'm curious if there is a benifit or a negative in doing so.
OFNA has some that were for the X1s and another for the X2. The ones for the X1 are the same # of teeth as the factory straight cut gears (43 and 13). The I found during off road racing to be too fragile and went back to stright cut gears as did everyone I know that tried them. However the X2 gears use a different ratio (45 and 10 for 4.5:1) wish is too low (? I always confuse these terms) unless you race in a very short track. These however are very strong evem for offroad.

To resume I don't recommend the spriral cut gears. It would be a shame to be leading a race and have these fail.
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Old 04-06-2011, 08:12 PM   #5552
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Thanks for the advice.. One minor little factor gnawing at me though is that for the 454 I have the Fioroni clutch - already have it... - which is fantastically low-maintenance.. For the JPX I'd have to go buy some new buggy-racing clutch.. The Ascendancy clutch here is pretty cheap, so I'd probably get that.. The Fioroni though is just so set-and-forget....
I there any reason why you couldn't swap the Fioroni clutch
set-up over to the JPX engine? If that is the clutch set-up
you like, why not try it.
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Old 04-06-2011, 09:21 PM   #5553
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It's not the RPM that breaks them. If you bind the universal under power they will snap.
RPM's are a factor as well to consider. When turning at close to full throw and getting on the gas the vibration can force the cvd's to bind especially if the car is loaded to one side.
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Old 04-06-2011, 09:29 PM   #5554
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Originally Posted by Herrsavage View Post
Thanks for the advice.. One minor little factor gnawing at me though is that for the 454 I have the Fioroni clutch - already have it... - which is fantastically low-maintenance.. For the JPX I'd have to go buy some new buggy-racing clutch.. The Ascendancy clutch here is pretty cheap, so I'd probably get that.. The Fioroni though is just so set-and-forget....
my clutch setup is stock flywheel 1.1 springs & maxlife shoes ..simple maintenance
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Old 04-06-2011, 11:42 PM   #5555
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I tried the Fioroni slider on my Nosram 21RR(another Picco P7 Evo 2/3 twin like the Jammin) once, and it killed the power.. I don't think the Fioroni is good on 21's.. Great on the Mach's and 28's though..
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Old 04-07-2011, 04:55 AM   #5556
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I don't recommend the spriral cut gears. It would be a shame to be leading a race and have these fail.
+1
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Old 04-07-2011, 03:16 PM   #5557
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OFNA black shirts for sale on For Sale Thread.

OFNA Tee shirts in black
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Old 04-07-2011, 06:39 PM   #5558
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Thanks for the advice on the spiral gears, I was kinda leary of them to begin with.
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Old 04-07-2011, 06:56 PM   #5559
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well after hearing all that on snappin the cvd's, i re-shimmed the slop that was in my wheels, to the innerbearing, more or less placing cvd's closer to the centerline of chassis, i just had he shims on outside behind wheel hub, now i used the larger kyosho ones that you actually space the entire bearing outer housing with, so this will work as more a preventative measure, and guess ill have to see where that and my endpoints land me...lol...but the shimming def will help, and i wonder where shims<if any were used> where they were placed when cvd snapped, i just say, cause i ran alot of the 777 and kanai buggy's over the years with my steering throw MAXED and NEVER had a issiue, so im looking very closly as i do believe you guys they snap, its a expensive lesson not to take advice on, but theres gotta be a way to counter, this week opener, ill report if i snap any....with shims placed as they are, and aftermarket kyosho front alm knuckles, i have epa all the way
Hopefully its a sucess story!!!
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Old 04-07-2011, 07:08 PM   #5560
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What size turnbuckles are you guys using for your steering linkage?
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Old 04-07-2011, 10:13 PM   #5561
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Thats not a dumb question.I want to run an actual turn buckle and with the crank in the center there are clearance issues plus with the way the steering link is attached it looks like it will slip eventually with all the vibration,it's not 100 percent secure. Running a turnbuckle alsontakes away the slop and I think it looks better.
Is this what you are trying to do?
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Old 04-08-2011, 03:13 AM   #5562
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Yes but on the other side.
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Old 04-08-2011, 06:54 AM   #5563
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gashuffer do you work at bruckners?
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Old 04-08-2011, 07:32 AM   #5564
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gashuffer do you work at bruckners?
No.
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Old 04-08-2011, 07:47 AM   #5565
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For those thinking of using the OS 19xz Speed, my LHS got one in this week with a store price of $399.99. This is a steep price depending on my LHS sells the OS 21xz Speed for $425.00. It definitely is lighter than the .21 version. Wish I could break it down to look at its internals.
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