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Old 09-08-2014, 08:51 PM   #1
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Default Tb04 pro v2 21.5 & 17.5 gearing help.

can anyone help me a starting point fdr for tb04 pro v2 tamiya track aliso viejo?
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Old 09-08-2014, 09:02 PM   #2
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can anyone help me a starting point fdr for tb04 pro v2 tamiya track aliso viejo?
What do you need to know?
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Old 09-08-2014, 09:12 PM   #3
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[QUOTE=CW22;13522362]What do you need to know?[/

just want to know whats a good starting FDR for 21.5 & 17.5
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Old 09-08-2014, 09:26 PM   #4
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[QUOTE=bornox;13522381]
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What do you need to know?[/

just want to know whats a good starting FDR for 21.5 & 17.5
Did you buy the new upgrade motor mounting spacer or the Exotek one?
with that for a 21.5 you can gear down to 3.3 fdr and for 17.5 you have no problem , you can do 3.6 -3.8 @ tamiya
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Old 09-08-2014, 09:28 PM   #5
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[QUOTE=bornox;13522381]
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Originally Posted by CW22 View Post
What do you need to know?[/

just want to know whats a good starting FDR for 21.5 & 17.5
I'm using an exotek motor mount adaptor with 52t pinion and 73t spur gear to achieve an fdr of 3.51 on my tb04 pro v2. The motor is a hobbywing xerun v10 21.5t running 40 deg endbell timing.I find this setup provides a good balance of acceleration, top end and runs cool.

A fdr of 4.0 is a good starting point for a 17.5/21.5t car. Then you can slowly work your way down to a fdr that is optimised for your track/driving style/setup
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Old 09-08-2014, 09:50 PM   #6
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[QUOTE=CW22;13522410]
Quote:
Originally Posted by bornox View Post

Did you buy the new upgrade motor mounting spacer or the Exotek one?
with that for a 21.5 you can gear down to 3.3 fdr and for 17.5 you have no problem , you can do 3.6 -3.8 @ tamiya
I bought the tamiya one. thanks for the tip. i appreciate it.
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Old 09-08-2014, 09:51 PM   #7
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[QUOTE=TB03Racer09;13522415]
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I'm using an exotek motor mount adaptor with 52t pinion and 73t spur gear to achieve an fdr of 3.51 on my tb04 pro v2. The motor is a hobbywing xerun v10 21.5t running 40 deg endbell timing.I find this setup provides a good balance of acceleration, top end and runs cool.

A fdr of 4.0 is a good starting point for a 17.5/21.5t car. Then you can slowly work your way down to a fdr that is optimised for your track/driving style/setup
thanks!
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Old 09-08-2014, 09:57 PM   #8
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by the way guys, what brand of spur u guys use that best fit for tb04? Thanks again!
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Old 09-08-2014, 10:13 PM   #9
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by the way guys, what brand of spur u guys use that best fit for tb04? Thanks again!
Kimbrough will work.
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Old 09-08-2014, 10:44 PM   #10
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I am using robinsion racing 64 pitch, they work well
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Old 09-15-2014, 07:36 AM   #11
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I ran my TB04 Pro yesterday outdoors on asphalt for the first time. I ran a Reedy 21.5 with 40 degree timing geared 75T spur and 49T pinion (64 pitch) for an FDR 0f 3.827 and the car wasn't too bad. Still wished I had more speed. The drive train is noisy as heck but seems otherwise smooth.
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Old 09-16-2014, 11:10 AM   #12
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I ran my TB04 Pro yesterday outdoors on asphalt for the first time. I ran a Reedy 21.5 with 40 degree timing geared 75T spur and 49T pinion (64 pitch) for an FDR 0f 3.827 and the car wasn't too bad. Still wished I had more speed. The drive train is noisy as heck but seems otherwise smooth.
what oil do you use at the front diff?
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Old 09-16-2014, 11:15 AM   #13
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what oil do you use at the front diff?
The front gear diff has 500,000 weight oil and acts almost like a spool. The car was noisy, likely because of the bevel gears, and I hope they will seat-in and the noise will reduce over time. It handled great on untreated asphalt despite the cool 10 Celsius cloudy sky weather.
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Old 09-16-2014, 11:49 AM   #14
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Originally Posted by SteveM View Post
The front gear diff has 500,000 weight oil and acts almost like a spool. The car was noisy, likely because of the bevel gears, and I hope they will seat-in and the noise will reduce over time. It handled great on untreated asphalt despite the cool 10 Celsius cloudy sky weather.
thinking about 2.5 mil on my front diff. u think that is too much?
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Old 09-16-2014, 12:00 PM   #15
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Quote:
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thinking about 2.5 mil on my front diff. u think that is too much?
Should work.
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