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Old 08-10-2004, 11:11 PM   #1
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Default Final Drive information?

Hi,

Is there anywhere where information is compiled giving FDR's for various motors? I am running an Orion Stock Core and it's much different (apparently) than the Trinity Monster in terms of gearing necessities.

Whereas the Monster guys are telling me they shoot for 7.2, I've read Stock Core guys tell me to go as low as 6.25. And someone else that I found during a search even said he was running 5.8.

I know it depends on the track, but the "average FDR" is what I'm looking for.

Thanks in advance.
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Old 08-11-2004, 12:57 AM   #2
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If there is a place that gives the FDR's for the motors please post it here because I haven't found it. The FDR's are generally a rule of thumb that people come up with at their track, and driving style, and setup, and motor tuning etc. Nothing is really set in stone.
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Old 08-11-2004, 01:01 AM   #3
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Default Gearing

No such thing exist. Just go buy a Monster stock and run what everyones running. You will go quicker as well.
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Old 08-11-2004, 02:09 AM   #4
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Well, does anyone have a dyno sheet for these motors?

Because they put out their max power at a certain RPM. And at that RPM, you want to be going pretty much the average speed on the track.

If you gear it too tall, you'll be too slow reaching the average speed. I guess you may end up having a faster topspeed on the straight but this will be negated by your losses in the turns.

If you gear it too short, you'll be too fast reaching the average speed and run out of rev-room before hitting high speed on the straights.

Yes, it depends on tracks. But the motors need a metric, and that is given by a dyno.

Anyone have a dyno page for thse motors?

Thanks!Donovan
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