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Old 06-01-2006, 07:17 PM   #5296
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Originally Posted by DOTMAN
I must have gotten a bad one then cause I ran one of the Yok plastic spools at the Reedy and it lasted all of three laps. The complete left side of the spool tore off all the way to the pulley
Did you have the outdrive rings on it?
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Old 06-01-2006, 08:33 PM   #5297
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Quote:
Originally Posted by DOTMAN
I must have gotten a bad one then cause I ran one of the Yok plastic spools at the Reedy and it lasted all of three laps. The complete left side of the spool tore off all the way to the pulley
these spools are very "performance" oriented..... if you hit hard OR should be airborne and land with the power on they tend to break into multiple pieces.

i used one at Reedy this year again and was fortunate (lucky) that it performed perfectly.

being so light gives an advantage on several fronts...
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Old 06-01-2006, 09:35 PM   #5298
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i too ran the plastic spool last weekend at the reedy race, i ran the same spool for the week before of practice, all in all over 30 packs later and and just a little wear and tear,in fact i wore out and alum drive axel... lol

i did order a TIR spool and extra drive cups to be on the safe side, but did not need it

so if anyone is looking for a Brand new TIR SPOOl with 8 sets of drive cups please let me know

lets see how the plastic spool stands up to to running at socal.. lol
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Old 06-02-2006, 02:26 AM   #5299
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We have had experience with different spools and believe me they DO effect the handling characteristics of the car.

I have been running my BD for 2 seasons in Superstock trim. I first ran a steel spool. I put the spool on from day one so I never knew any better and just set everything up to my own preferences. I always complained that my son's TC3 and TC4 were much sharper into and out of corners.

Last February we were at the Nuremburg fair and discussed this subject with a number of persons - Oscar Jenson, David Spashett - to name just a couple. I explained to Oscar that no matter what I did I could not get the car to be "sharp", and his first question was "what spool are you running?"

He explained that a lighter spool will cause less centrifugal force and allow the car to turn more freely. Look at the Corally RDX spool. He insisted we try.

Back home I prepared a BD for my son Josh to race in mod, and I put a similar steel spool in it. His immediate complaint was "lack of sharpness and steering response".

I put a couple of TIR spools on both cars and they were suddenly transformed. I didn't believe it would have that sort of effect till I tried it, but boy does it work. Our BD's are now 100% better and nicer cars to drive.

Thank you Oscar.
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Old 06-02-2006, 02:32 AM   #5300
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Very true Joe
I always try to run the plastic spool where possible, especially when racing stock as the difference there is very noticeable at much lower speeds with less power on tap. Anything faster and I tend to use the TiR spool just for that extra bit of durability.
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Old 06-02-2006, 04:55 AM   #5301
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Hi,

@Ralf: You have some very good experiences here from some guys. The point is that you always want to keep the rotating masses as low as possible (BTW this won't be possible anymore when the power keeps increasing like it's doing at the moment).
The reason why a light spool gives more steering is the fact that the front tires can slow down faster. This has to do with the rotating masses. You can try it quite easily at home. Take a wheel of your 1/10 car and spin it. You should be able to stop it easily. Otherwise visit you doctor.
Now go outside and try the same on your full scale car (no brakes, no gear, and hopefully a freespinning drivetrain). Come inside again and tell us what was easier to stop.
The same happens with a heavy spool. The front end pushes towards the out because the heavy spool isn't slowed down that easily.
A heavy spool would cost some agility and cause even more understeering then a light spool. But without planting the rear end more. So... no real advantages.
An interesting idea could be if you use a center one-way and a heavy spool. You won't be able to use breaks but the corner speed should be increased. Just an idea...

I don't know it for sure but I could imagine that there are some problems caused by a spool when the spool is lighter the the rear diff.

Cheers
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Old 06-02-2006, 05:58 AM   #5302
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Talking Johnbull

JOHNBULL how do you get to english on www.rc-world.com
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Old 06-02-2006, 08:32 AM   #5303
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JOHNBULL how do you get to english on www.rc-world.com
Sorry. Didn't understand your post. Can you elaborate, please?
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Old 06-02-2006, 09:15 AM   #5304
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Quote:
Originally Posted by speedy-932
Hi,
An interesting idea could be if you use a center one-way and a heavy spool. You won't be able to use breaks but the corner speed should be increased. Just an idea...

I don't know it for sure but I could imagine that there are some problems caused by a spool when the spool is lighter the the rear diff.

Cheers
Chris
a long time ago i posted that i was gonna build the chassis with a spool and a center one way,, those (i assume with high edcation) told me i was..... well no need to go back there again.... i too notice the steering difference between the yok spool and the after market ones, jaybee gave me one he had,, i can't remember who made it, but it didn't turn in a as as the yok, my only problem is when i hit stuff the drive cups bend outta shape, (but i guess thats means there working). btw, center one way, and spool, works just fine.

welcome back johnbull, hope you didn't join the "zipper" club like i did last year
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Old 06-02-2006, 10:10 AM   #5305
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Quote:
Originally Posted by pops
Did you have the outdrive rings on it?
I did but that's not where it broke. The complete left outdrive twisted right off under load. I got tapped from behind and went up on the curb. When I came down...SNAP. I didn't really get any air...just had a wheel out the ground for a split second.
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Old 06-02-2006, 10:19 AM   #5306
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Quote:
Originally Posted by DOTMAN
I did but that's not where it broke. The complete left outdrive twisted right off under load. I got tapped from behind and went up on the curb. When I came down...SNAP. I didn't really get any air...just had a wheel out the ground for a split second.
Wow I am suprised. Must have been a huge load to make it snap, or it was just defective.
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Old 06-02-2006, 10:21 AM   #5307
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Originally Posted by Turtlemaster
welcome back johnbull, hope you didn't join the "zipper" club like i did last year
The "zipper" club is not that bad, remember it could be worse!
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Old 06-02-2006, 12:39 PM   #5308
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Quote:
Originally Posted by pops
Wow I am suprised. Must have been a huge load to make it snap, or it was just defective.
Yeah, I'm thinking it was a bad one. I bought two so I'll try the other one and see how will it holds up.
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Old 06-02-2006, 03:29 PM   #5309
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Originally Posted by pops
The "zipper" club is not that bad, remember it could be worse!
lol
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Old 06-02-2006, 09:35 PM   #5310
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I have a question on rims, I'm using some CS-27's and they rub on the A arms.. (3/4 turn to full lock) Am I doing something wrong, Or am I supposed to use just Yokomo Rims? I have yet to use this car and I have a bunch of CS 27's that I would like to use. Anyone else have this problem??
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