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Old 10-30-2001, 09:56 PM   #1
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Default diffs and one ways

what is the difference between a diff and a one way
when should i use a one way vs a diff
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Old 10-31-2001, 08:07 AM   #2
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Default Re: diffs and one ways

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Originally posted by Gump0220
what is the difference between a diff and a one way
when should i use a one way vs a diff
check out www.about.com and i am sure you will get an answer there !!
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Old 11-01-2001, 10:11 AM   #3
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Manticore: if I'm not mistaken, the R/C sections of about.com were schedule to be removed. Which is why Hank moved everything over to www.hobbytalk.com.

Gump0220: basically, people use one-ways to gain more on power steering. They are most useful when your on an reasonably open track layout with more sweeper turns than hairpins. But, some people use them anytime. These people however are very used to running with one-ways and know what they can and cannot do on tight tracks while running them.
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Old 11-01-2001, 01:49 PM   #4
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A diff gives differential action all the time. One tire can spin faster or slower than the other, but both generally have power. The tightness is adjustable on a ball diff, which means you can adjust how much diff action occurs.

A one-way is very different On Power vs. Off Power. On power. it locks up, meaning both front wheels always have 100% power. Off power, each wheel goes into "freewheeling." The oneway pully is slowed by the motor, but the outdrives basically disconnect, and can go their own speed, each one idependently. It's very much like a pan car, or offroad truck, or any other rearwheel drive car, at this point. What this does, is while on power, it's locked up, which gives much more positive traction. There's no loss due to slipping. It makes it more effeciant. Off power, the freewheeling action gives lots more steering. The down side, is that you lose all front braking. This is why they're usually reccomended for larger flowing tracks only, because you don't need the brakes.

A center one-way, gives something from both worlds. You keep the front diff, but lose the front braking. On Power, it's just like a normal car, with both diffs. Off Power, the entire front belt/diff/wheels freewheel from the centershaft, as a single unit. (If that makes any sense) It gives more steering than a direct drive layshaft, but not to the extent of a front one-way.

When to use them: Pretty much, if you need more steering, and don't use the brakes, throw a one-way in it. Either run the center, front, or both. The first time you use one, it might feel kinda weird, but once you get the chassis working with it, and learn how to drive it, you can knock tenths and full seconds off your lap times in a hurry.

I hope this helps out, let me know if something's unclear. I'm no expert, but I think I've got a good basic understanding of these.
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Old 11-01-2001, 02:00 PM   #5
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Gump0220: one other thing of note to keep in mind is that one-way diffs are not know for their strength! This is something you should really keep in mind. There isn't one thread on this board that I know of, where the one-ways haven't shown to be at least a little fragile. Losi's seems to be holding up well, only one broken one I have heard of, but it just came out, so we will have to see.

Yokomo, Corally, Associated, and especially Kyosho one-way front diffs have shown weakness under certain conditions. So if you do chose to run a one-way front diff, find out what its weak points are, and keep spares of that on hand.
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Last edited by Darkseid; 11-01-2001 at 02:03 PM.
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