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Old 12-04-2004, 02:17 PM   #1
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Default what's a spool?

i keep hearing the word "spool" with the trf415ms ... what's that about? and anyone know when it will be avaliable?
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Old 12-04-2004, 02:20 PM   #2
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its just a solid axle......if there aren't already available if you have a spare diff just tighten it up as much as possible without braking the screw.

or you can glue the outdrives intoa one-way diff.
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Old 12-04-2004, 02:20 PM   #3
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A spool is a diff with locked gear and you can pick one up at Speedtechrc.com.
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Old 12-04-2004, 03:16 PM   #4
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thx guys

so the spool is used to keep the diff tight?

i will check out speedtech.

thx alot again.
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Old 12-04-2004, 03:20 PM   #5
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no, a spool is used instead of a diff....only on some tracks though.
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Old 12-04-2004, 03:20 PM   #6
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hmm... after taking a look sure at it....

basically, (correct me if i am wrong) this spool thing just stops the diff from doing its job... so both wheels are directly connected to the outdrives?

does that make the car harder to steer?


thx again.
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Old 12-04-2004, 04:03 PM   #7
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No, a spool is different than a dif. Like a one-way and dif, a spool has certain characteristics that make a car handle in a certain way. It retains all the braking capabilities like a dif, but keeps the wheels synchronized at the same speed because it is just a solid axle. This means that the inside wheel spins at exactly the same rate unlike a dif where the inside wheel spins at a different rate causing a difference in traction which in turn affects the way the car handles. There isn't enough room to go into the different characteristics of a spool vs. dif vs. one-way here, but there is plenty of articles on it. Sometimes racers just tighten down the dif by tightening down the tension screw so that it in a sense locks the dif in to becoming a spool. One thing though, because a spool is locked, or solid, it won't give, which places more stress on your drivetrain which many cars don't handle well. Good luck.
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Old 12-04-2004, 04:25 PM   #8
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edseb,

thanks for the reply, that sounds neat.
you have any websites i can learn about the spool. it seems it has the best of both worlds. i run a front oneway and braking quickly is a nightmare
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Old 12-04-2004, 04:29 PM   #9
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What I have always found is a Spool will giev you less off power steering, but when you get on the throttle, it will bite harder and you will get a little more acceleration. so you will get more steering as well on power. They are nice if you can adapt your driving style to them.

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Old 12-04-2004, 04:39 PM   #10
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i actually tried a spool for te first time tonight (well a proper spool) and i loved it, gave loads of rip coming out of corners (you could even hear my tyres "ripping" ) and excelent steering coming out of corners (bit of understeer going in but soon sorted that)

i will certainly be using it much much more, next weekend actually...2nd time racing stock next weekend so we will see how it goes
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Old 12-04-2004, 04:46 PM   #11
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thanks for helping out a newb guys.

now i wish i knew when the trf415ms is coming out and if i have the cash to buy one =P

Sushi:

since i am the trf is a belt, is it better to use a spool with than a shaft? because most wear will occur on the belt rather than gears?


-Patrick
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Old 12-04-2004, 05:44 PM   #12
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Wear depends on the car, not necessarily the belt or shaft. It can affect the gears, etc. A spool is nice, but sometimes adds a puch going in to a turn. A one-way often is faster in big sweeping tracks, cause it gives more steering cause the inside tire is rotating slower, giving more traction and if you are racing a big flowing track, the time saved from the cornering will make up for the time gained from braking. It really all depends on the track. Carpet adds a whole bunch of other variables as well. Experiment, what works for one person isn't always best for all. For serious racers carry a spool, one-way and dif in their tool box. Another thing that has gained some popularity lately is to run a spif. It's a dif tightened way down so that a lot of times it will act like a spool but with a slight slip to act like a dif on certain parts of the track.
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Old 12-04-2004, 07:16 PM   #13
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A spool is the thing that yarn or string comes rolled up on.
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Old 12-04-2004, 07:40 PM   #14
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haha

techy joke

but true

the belt is technically made of threads too...

anyone know how it works? or have a diagram for me to look at how a spool works?
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Old 12-04-2004, 08:53 PM   #15
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You're over thinking it. A spool is just a locked axle. Both wheels attached together by a bar; its the simplest form of axle.
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