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Old 01-24-2005, 02:25 PM   #6721
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Quote:
Originally posted by TRF415boy
Durability of the TiR spool with delrin outdrives in Mod = 0. It's more suited to stock and super stock racing. A friend of mine used one in mod in his pro4 and eventually broke about one outdrive every two runs or so... He went back to a proper spool.
To be honest, if it were made, I'd buy one, and just replace the outdrives every run, for big races only though, not gonna spend that cash for club racing.
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Old 01-24-2005, 03:45 PM   #6722
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I have a friend in Russia and he made the lightest spool I have ever felt, really smart construction!!
I used it in my Pro4 for a long time and no problem what so ever!!
It gave me much more steering over the aluminium spool from HPI.
I know he has sent pictures of it to TiR so they can produce it.
Fingers crossed they will do it!!
He will make me one for my 415 when he got the time, I will let you guys know how it works!
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Old 01-24-2005, 05:33 PM   #6723
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i didn't know the lighter spool makes so much of a difference...i am using the steel ones...may i know whats the point of having toe out for the front blocks as the car seems to handle a lot different.and also...i thaught i saw from the pics that MR used spacers below the bridge instead of having anti dive..do you guys have any idea of it?
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Old 01-24-2005, 06:59 PM   #6724
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Default Is lighter necessarily better?

I've ran spools out of aluminum, steel and delrin. Obviously the steel spools hold up the best but I think it also takes a lot of steering out of the car. The delrin was very light and seemed to have very little affect on the steering, but I had to keep replacing them due to breakage or just cracked the plastic. Aluminum seemed to be the best compromise with wear and not compromising steering. To this day I have not tried Titanium spools. Although I heard that too light of a spool can actually decrease the performance of using a spool, how exactly I don't know, maybe some one with an engineering degree can explain it better!
Just my 2!
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Old 01-24-2005, 07:15 PM   #6725
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Don't understand how a different spool material can impact the steering characteristic of a car. They should all function the same. Unless the lighter/softer material flex more. If thats the case, just run a front diff super tight. Then you won't have to worry about the beating a spool puts on the other parts of the car.

Just a question
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Old 01-24-2005, 08:55 PM   #6726
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Carl it would come mainly from rotating mass. The heavier the flywheel the harder it is to stop etc. This flywheel creates forward motion which will create less steering in the turn.

As an interesting side note along these lines. The maker of Speedtech's spools got an order for Worlds to create 10 superlight spools for Masami. These spools were just about paper versions of the Steel spool that Steve sells. Down at Worlds Masami found the car was slowing to fast mid-turn and was looking for the original "heavy" parts to keep the car rolling through the turn. Some of the guys at the race got the trick "light" spools in trade and were none the wiser.........
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Old 01-24-2005, 09:57 PM   #6727
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now that makes sense...same principal used whe I used to race concrete oval. We used to use steel pinions to maintain momentum in the corners.
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Old 01-24-2005, 10:00 PM   #6728
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Carl, It really does not matter....you are still going to be slow.
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Old 01-24-2005, 10:51 PM   #6729
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I'd like to try a little lighter spool still, the steel one didnt want to turn very well, Patrick's Yokomo diff actually turned a lot more, surprized me.
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Old 01-24-2005, 10:56 PM   #6730
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then how about the purpose of the toe out on the arms??the knuckles still track straight but the arms why d block and a bridge?
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Old 01-24-2005, 11:23 PM   #6731
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Check on the last page, I believe it was Linger that answered that.
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Old 01-24-2005, 11:49 PM   #6732
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Another thing about the steel spool is that it makes the driveshafts shatter more spl?
It is also more friction between the driveshaft and the steel outdrives binding the suspension more compared to the delrin outdrives

@KELVIN

The toe out will change the suspension geometry making the car dive more into the corner, giving more initial steering!!
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Old 01-25-2005, 01:41 AM   #6733
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Does anyone have a complete spring chart they can send me? I'd like to know Tamiya vs AE vs Alex vs HPI and so on, basically any spring that could be used on the Tamiya shocks.
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Old 01-25-2005, 02:00 AM   #6734
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Quote:
Originally posted by Randy Caster
Does anyone have a complete spring chart they can send me? I'd like to know Tamiya vs AE vs Alex vs HPI and so on, basically any spring that could be used on the Tamiya shocks.
http://www.rcingreece.com/index.asp?...ing_comparison
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Old 01-25-2005, 02:01 AM   #6735
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Quote:
Originally posted by Randy Caster
Does anyone have a complete spring chart they can send me? I'd like to know Tamiya vs AE vs Alex vs HPI and so on, basically any spring that could be used on the Tamiya shocks.

Here Ya go Randy
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Attached Files
File Type: txt spring rates.txt (885 Bytes, 209 views)
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