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Old 01-17-2008, 10:12 AM   #211
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Come on Paul thought you were supposed to know everything! LOL... just messing..

See you in florida
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Old 01-17-2008, 10:18 AM   #212
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Wow, that's a long time ago!

I remember at the reedy race in ripon ages ago a young paul lemieux spinning sharp glass and aluminum pit boards on his finger like he was some sort of harlem glob trotter or something...
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Old 01-17-2008, 10:20 AM   #213
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pictures/videos of that would be great! lol
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Old 01-18-2008, 01:11 PM   #214
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Thumbs up me

Hello Paul Kevin here I made the Team so, I will order my 008 soon c u soon KB
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Old 01-18-2008, 01:59 PM   #215
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Hey Kevin, congrats. ill see ya
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Old 01-19-2008, 12:07 AM   #216
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Quote:
Originally Posted by Ted Flack View Post
Actually a bigger spur requires a bigger pinion to keep the same ratio. 100/25=4.0 while 80/20=4.0.
My mistake Paul and Ted, thanks for correcting me. This is a equation though and simple math prove me wrong . Spur/pinion=ratio. We have to multiply with same number on each side, ie. (1,04/1,04)*(100/25)=4*(1,04/1,04) which equal 104/26=4 .

Paul on the other hand is right, found some theory about gearing in a site written by Professor James F. Young from Rice University.

More acceleration in gearing is also explained:
http://cnx.org/content/m13594/latest/
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Old 01-19-2008, 09:33 AM   #217
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stokka, thanks for looking into this. So after doing a bit more reaserch what do you think?, or is it not even true. gearing (80 /20 ) less acceloration than (100/25).

not that it really matters but maybe good to know
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Old 01-21-2008, 12:15 PM   #218
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After my research , you were right from the start Paul. 80/20 will give less acceleration than 100/25. And 80/20 will give more high end/top speed.
The reason is a bigger spur will give more turn force.
And the smaller pinion/spur combination will give less rotational mass, added to the shorter distance for pinion to travel makes it easier for motor to peak rpm.

In addition on the larger spur, the pinion hits the teeth further away from the axle thus invoking more force. (The force applied to a lever, multiplied by its distance from the lever's fulcrum, is the torque)

~stokka
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Old 01-22-2008, 02:55 PM   #219
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Stokka: thanks for looking in to this for us and the explination.
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Old 01-22-2008, 03:08 PM   #220
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Quote:
In addition on the larger spur, the pinion hits the teeth further away from the axle thus invoking more force. (The force applied to a lever, multiplied by its distance from the lever's fulcrum, is the torque)
But the pinion tooth is farther away from the motor shaft on the larger pinion, decreasing the force available to drive the spur.
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Old 01-22-2008, 03:11 PM   #221
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Are you going to the Cactus?
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Old 01-22-2008, 06:55 PM   #222
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JP: No I dont have plans as of right now to go, is it the same week as the carpet nats? (why you want a peice of me? or maybe the whole thing)lol
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Old 01-22-2008, 07:06 PM   #223
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When you coming up to Oshkosh to play again?
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Old 01-22-2008, 07:20 PM   #224
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Quote:
Originally Posted by Paul L View Post
JP: No I dont have plans as of right now to go, is it the same week as the carpet nats? (why you want a peice of me? or maybe the whole thing)lol
ewwwwwwwwwwa.... wow I don't know what to say I mean Paul U have A Kid and your offering your self to someone else
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Old 01-23-2008, 01:41 PM   #225
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Quote:
Originally Posted by Larry Brown View Post
But the pinion tooth is farther away from the motor shaft on the larger pinion, decreasing the force available to drive the spur.
A larger pinion generate more motor heat you mean? It makes sense.

Paul: By the way thank you for making your self available for us in this forum, It's great to get valueable tips from an outstanding racer!

~stokka

Last edited by stokka; 01-23-2008 at 01:54 PM.
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