dc661

iTrader: (156)

FDR= Final Drive Ratio

Spur divided by pinion times internal gear ratio = FDR

Your owners manual should tell you what your car's drive train interal gear ratio is.

Example Associated's TC6 is 2.0

Example 90/50x2= 3.6 FDR

CW22

iTrader: (110)

Oh, Ok. Thank you so much.
I am new in this stuff, still learning.
I will take a look at my manual book.
Thanks.

dc661

iTrader: (156)

You're welcome. There is an Android and I believe an Iphone app to calculate FDR for you, look into it. I have the Android app called gears that is ideal for quick gear ratio calculations. I believe it was free also.

CW22

iTrader: (110)

Thanks, I know my internal ratio gearing for my Tamiya TA05 V2 is 2.055.
I will try to change the spur gear to 90T let see what is the speed and the temp.

DARKSIDE

iTrader: (2)

hey Sean....ygpm

rcduder

so i will be ordering a reedy sonic 17.5 in a couple days ive been running tekin for awhile now and my dad just got one of these motors and i like it a lot so im gonna get one now so my question is, how do these motors accept timing? like do they do well with a lot of timing added or do they work better with less timing? i already know about temps and gearing and all that so this is my only question about it. thanks

j.d.roost

iTrader: (32)

Put me on the list of wanting a replaceable stator.
I "found the limit" of my 10.5 this weekend.
Why is boost such an evil temptress.

Geberit

I burned my 5.0 Reedy. Since they don't sell the stator separately I would like to know if the Thunder Power stator from a ZR3 S would fit?

Thanks for any info!

tonyd

iTrader: (52)

I would like to know if the rotor that comes with the 17.5 has the most torque? Or is there one that has more???? Looking for more torque.

geeunit1014

iTrader: (14)

As far as ROAR legal rotors for stock, it comes with the biggest rotor (most torque). If you dont care about ROAR legality, you can run a mod rotor for more torque.

wtcc

iTrader: (2)

I bought one hardly used 7.5t today (after getting the possibility to test it) and I am absolutly fascinated of the low running temperatures this motor has in comparison to my X12 7.5t. It was at least 10-20°C cooler (same setup) and I it lasted 14 minutes on a large outdoor track until my 5500 Reedy battery gave up.
Our clubraces are always 15 minutes and I was totally surprised that I nearly made it while driving as hard as I could and having better laptimes than the 9.5t setup. I love it!

stiltskin

iTrader: (103)

Could someone explain the difference in half and full turn motors? ie.. 4.0, 4.5. Better power delivery? Smoother? Or just more power with no real difference.

wingracer

iTrader: (24)

Supposedly but mine didn't. Mine measured 12.4 X 24.5. Bought the largest legal replacement, it measures 12.51 x 25.2. There seems to be quite a lot of variance in manufacturing.

P6

iTrader: (5)

what is a good esc to run with a 8.5t reedy i can get the sxx with reedy combo for $235 from amain but i would prefer a budget esc that works just as smooth with all the adjustments the sxx has

Justin33

iTrader: (45)

I run an 8.5 reedy with a sxx ss version 2 and its amazing no regrets at all been super reliable for me