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Old 05-27-2006, 07:19 PM   #1
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Default need help with t2 gearing etc.

hey guys i just got my t2 and have not even run it yet.
I need to know the pinion i need to use.
I have an 84 tooth spur (48p) and am using a 19t and sometimes a 27t stock.
I have all pinions from 21-30 except 29.

I need to know which pinion to use.
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Old 05-27-2006, 07:37 PM   #2
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Round ones.....


Way to many variables to just throw a number out there. each track is different. Ask people for there roll out at your local track then dial yourself in, or find someone with an Xray.
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Old 05-27-2006, 07:56 PM   #3
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Default heres my track

Im sure someone can help me......the only xrays at my track are evo2's so no help there.

Maybe a look at out track will help: www.jdk.com.au/racemodels.html
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Old 05-27-2006, 10:14 PM   #4
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JDK

I ran a 21 tooth pinion with the stock 84 tooth spur in stock last time i raced, on a flowing track with high top speed- so try there... you will probably use between 19-23 at your track... only judging by photos as it seems to warrant fairly high top speed right???

try it and see... start from 20 and work up, you should find the right one in there

Hope that helps

Robbie
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Old 05-27-2006, 10:16 PM   #5
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That was with foam tyres though so if you race rubber you may want to gear down a tooth or two

Cheers

Robbie
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Old 05-27-2006, 10:20 PM   #6
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try an fdr of 5.4
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Old 05-27-2006, 10:39 PM   #7
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Default what

What is the internal ratio of the t2? is it 1.7???
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Old 05-27-2006, 10:40 PM   #8
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yes, its 1.7
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Old 05-27-2006, 10:49 PM   #9
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Default so......

so if i wanted to get a fdr of 5.4 i should go with about a 27t pinion with 84t spur?
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Old 05-27-2006, 10:53 PM   #10
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Quote:
Originally Posted by xray racer
JDK

I ran a 21 tooth pinion with the stock 84 tooth spur in stock last time i raced, on a flowing track with high top speed- so try there... you will probably use between 19-23 at your track... only judging by photos as it seems to warrant fairly high top speed right???

try it and see... start from 20 and work up, you should find the right one in there

Hope that helps

Robbie
There is 2 high speed sections,coming down the straight on both sides.
But we have 3 different track setups and on 2 of them,coming to the end of the straight you come into a sweeping corner.
so its half high sped the other half is technical qnd requires you to be quick.
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Old 05-28-2006, 09:28 AM   #11
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Quote:
Originally Posted by JDK race team
so if i wanted to get a fdr of 5.4 i should go with about a 27t pinion with 84t spur?
you want a 26 pinion with that mate

84/26 = 3.2307692

3.2307692 X 1.7 = 5.4

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Old 05-28-2006, 04:08 PM   #12
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Quote:
Originally Posted by buzz06
you want a 26 pinion with that mate

84/26 = 3.2307692

3.2307692 X 1.7 = 5.4

Thanks for all the help every one...i am going to use a 26t and just fine tune from there.
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Old 05-28-2006, 11:29 PM   #13
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Quote:
Originally Posted by JDK race team
Thanks for all the help every one...i am going to use a 26t and just fine tune from there.
Also chk here .. www.gearchart.com That way you can print out a chart with all your gearing needs .....
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Old 06-15-2006, 11:16 PM   #14
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FDR of 5.4
I will be using a 18t pinion with my 84t spur and stock 27,is this good?
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Old 06-16-2006, 12:14 AM   #15
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To work out your ratio's you divide the Spur gear by the pinion ie: 84 divided by 26 which = 3.203 then you mulitply that by your internal ratio which is 1.7 which = 5.49230. Should be fine for that track.

If you use a 19t pinion your ratio will be 7.515
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