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Post by pceng on May 19, 2014 11:29:09 GMT -7
Have a growing collection of Wizard "Drag Tires" .480's & 90's , not being used right now. Is there a gear size (# teeth) that will work with these tires tthat someone might be aware of.
I think most people are in the .450-60 range with inlines we race. Have tried larger tires w/20t gears and cars are not quick enough. Starting to think these larger tires are a left-over from when 18t gears were available............. or should I be going larger ? with gears ? Starting to question myself on this, maybe these tires are ment for cars with more torque ?
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Post by nosubfor3 on Mar 24, 2015 15:52:38 GMT -7
Have a growing collection of Wizard "Drag Tires" .480's & 90's , not being used right now. Is there a gear size (# teeth) that will work with these tires tthat someone might be aware of. I think most people are in the .450-60 range with inlines we race. Have tried larger tires w/20t gears and cars are not quick enough. Starting to think these larger tires are a left-over from when 18t gears were available............. or should I be going larger ? with gears ? Starting to question myself on this, maybe these tires are ment for cars with more torque ? Peter I use a taller tire with a higher traction magnet down force. Once I am happy with the launch of the car then i experiment with different gears. Vince |
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lewis
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Posts: 220
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Post by lewis on Mar 24, 2015 18:06:54 GMT -7
I was just playing with tires with gears today
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Post by dave632 on Mar 24, 2015 21:28:21 GMT -7
I would guess the taller tire would need a slightly higher gear ratio all else being equal. If the 450-480 tires work with say a 7-21 you may need a 7-22 or 23 to have the same performance..
Generally I have gone quicker with lower numerical ratios. The 7/21 would usually be quicker and faster than a 7/22 or 23 but not always.
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lewis
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Post by lewis on Mar 24, 2015 23:47:36 GMT -7
Don't have a timing system yet but mine seemed to be faster on the 10 ft track with .470 tire and 7/22 gear. I tried a 8/21 and seemed like it went slower not 100% sure since I cant time it but I went with the .470 7/22 setup since I'm running polymer traction mags in low downforce with neo piggybacks. Dunno hope I'm rite I guess we will find out Thursday.
Doubt this will help you much peter just what I decided to go with.
For some reason I just couldn't get one of my 8 tooth pinions to work it ate it up in just a few seconds and had alot of drag I swapped it and the new one worked just fine. One was a wizzard it was the junk one and other was a bsrt. Its got me stumped lol
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Post by dave632 on Mar 25, 2015 8:56:39 GMT -7
I had lots of trouble with gears when I did my testing for the Outlaw race. Tried all three types, Polymer, Delrin, and Nylatron. Sounds like the clearance/alignment is off on your 8T. I run them all the time. Remember the 8T is a little bigger and the clearance is different. Surprisingly some of the cars had little trouble with gears and others ate them regularly. Clearance and alignment were crucial. By keeping the clearance fairly tight, .003, but not dragging, most of the trouble went away. Magnets that were to close to the track added to the gear problem. Good luck with the race Thursday.... Are they running 15', 20'  Waiting for the results, please post. |
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lewis
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Posts: 220
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Post by lewis on Mar 25, 2015 9:12:07 GMT -7
Not sure what the deal was with it I adjusted till I was blue in the face lol.
The state race is 20'7". I sure will post standings throughout the day. I don't think they post time or speed I think they just use a win light.
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Post by dave632 on Mar 25, 2015 12:28:52 GMT -7
Without times it is just a guessing game as to how your car is running.
Here is an example of times where a car with the quicker reaction time and 60' wins the race against a faster car. It was close, only .0009 but the speed difference was huge for these cars. Note how the lead starts to dwindle as the race progressed, in a 20' race the faster car would have won easily. In reaction time 60' and 330' the car on the left lane is pulling away but by the 1/8th mile the right lane is catching up, by the finish it is actually quicker but the reaction time difference causes the loss.  
Looing forward to the results.
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Waiting for the results, please post.
