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Old 10-15-2009, 03:44 PM
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Originally Posted by mr crum View Post
after loosin a main qualifying position sunday im back with the solid spool the slipper loosened up with thrust bearings and all
Did you use the TC3 diff screw and nut? That usually solves it.
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Old 10-15-2009, 04:05 PM
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Originally Posted by or8ital View Post
Did you use the TC3 diff screw and nut? That usually solves it.
i use the diff screw and t nut from a t3 so i dont know i know that wen ur slipper spool loosens up the car goes to crap
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Old 10-15-2009, 04:12 PM
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Originally Posted by mr crum View Post
i use the diff screw and t nut from a t3 so i dont know i know that wen ur slipper spool loosens up the car goes to crap
Yeah it doesnt handle for anything as it is likely going from 4wd to 2wd.
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Old 10-15-2009, 05:33 PM
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but other then that its a great car so good luck man
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Old 10-15-2009, 05:50 PM
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Hello , sorry I am new too on road/TC5R , a few posts back someone asked what was the best FDR for a TC5R with a NOVAK 17.5 and the response was 4.2-3.8FDR use a 72t or 75t spur 48p. When I put either of those spurs in there is not enough adjustment room in the motor mount too use the correct pinion(19t/20t) to get that FDR. Am I missing something , not doing something right. Could someone please help I`ve got my first race starting tommorow and I just need too know what spur/pinion is best too start of with for the 17.5 on a medium size track or what I`m doing wrong? Thanks too all this is a great thread keep up the good work all!!
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Old 10-15-2009, 05:56 PM
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Originally Posted by traitor View Post
Hello , sorry I am new too on road/TC5R , a few posts back someone asked what was the best FDR for a TC5R with a NOVAK 17.5 and the response was 4.2-3.8FDR use a 72t or 75t spur 48p. When I put either of those spurs in there is not enough adjustment room in the motor mount too use the correct pinion(19t/20t) to get that FDR. Am I missing something , not doing something right. Could someone please help I`ve got my first race starting tommorow and I just need too know what spur/pinion is best too start of with for the 17.5 on a medium size track or what I`m doing wrong? Thanks too all this is a great thread keep up the good work all!!
switch to 64p and like a maybe a 90T spur
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Old 10-15-2009, 06:04 PM
  #11167  
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A 100 spur with a 52 pinion puts your FDR right at 3.8
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Old 10-15-2009, 06:07 PM
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the FDR really depends on ur track because at my track the 17.5 guys role with a 4.6 FDR
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Old 10-15-2009, 06:08 PM
  #11169  
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Originally Posted by traitor View Post
Hello , sorry I am new too on road/TC5R , a few posts back someone asked what was the best FDR for a TC5R with a NOVAK 17.5 and the response was 4.2-3.8FDR use a 72t or 75t spur 48p. When I put either of those spurs in there is not enough adjustment room in the motor mount too use the correct pinion(19t/20t) to get that FDR. Am I missing something , not doing something right. Could someone please help I`ve got my first race starting tommorow and I just need too know what spur/pinion is best too start of with for the 17.5 on a medium size track or what I`m doing wrong? Thanks too all this is a great thread keep up the good work all!!
Are you sure you have worked it out correctly? 72/20 is 7.2 overall..

72/34 would give you 4.2
64/32 would give you 4
61/32 would give you 3.8
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Old 10-15-2009, 06:11 PM
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Originally Posted by Nick Priest View Post
Are you sure you have worked it out correctly? 72/20 is 7.2 overall..

72/34 would give you 4.2
First off thanks for all your help.To be totally honest with you Im not exactly sure how too figure out FDR if you could tell me how you do it that would be much appreciated
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Old 10-15-2009, 06:14 PM
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To work out FDR you do

Spur / Pinion x internal ratio..

Example...

72 / 34 = 2.11

2.11 x 2 (tc5 internal ratio) = 4.23 FDR
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Old 10-15-2009, 06:24 PM
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Thank You!
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Old 10-15-2009, 06:29 PM
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Originally Posted by Nick Priest View Post
To work out FDR you do

Spur / Pinion x internal ratio..

Example...

72 / 34 = 2.11

2.11 x 2 (tc5 internal ratio) = 4.23 FDR
In the order of operations doesn't multiplication precede division? Though I suppose in the case of calculating gear ratio, it doesn't affect the outcome.
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Old 10-15-2009, 07:06 PM
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Originally Posted by IIGQ4U View Post
In the order of operations doesn't multiplication precede division? Though I suppose in the case of calculating gear ratio, it doesn't affect the outcome.
They are on the same order, so if if you have them both, you just go left to right
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Old 10-15-2009, 08:14 PM
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Originally Posted by IIGQ4U View Post
In the order of operations doesn't multiplication precede division? Though I suppose in the case of calculating gear ratio, it doesn't affect the outcome.
Previous poster is correct. Multiplication and division have the same precedence so they are performed left to right. Same holds true for addition and subtraction once all the other operations are out of the way.

P(lease)

E(xcuse)

M(y)

D(ear)

A(unt

S(ally)

is the pnemonic we use to teach the order of operations, generally 6th-8th grade math. P(arenthese or grouping symbols), E(xponents), M(ultiplication and/or D(ivision) left to right, A(ddition) and/or S(ubtraction) again from left to right.

Doesn't matter if calculating gear ratios or whatever. To experiment try your hypothesis out...do the indicated multiplication first and then the division. You will end up with a very different (MUCH smaller, something just a bit over 1.0 in fact) result.
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