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Old 01-05-2011, 03:12 AM   #1
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Default 3.5T LRP Vector X12 modified motor..

Hi,

i received my first modified brushless motor... with lrp sxx tc spec esc..

can you guys help me of how should i maintain the motor and what items do i need to make the motor fresh?

grease? and whatelse? oil on the o rings?

also one more thing..

what should the final ratio is perfect? cos atm i am using fdr of 6.4..

the internal ratio is 2.5.. so would u guys help me which spur and pinion should be perfect for 3.5T modified motor?

thank you

Last edited by catalzzy; 01-05-2011 at 03:29 AM.
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Old 01-05-2011, 04:16 AM   #2
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fdr is way too low...

I use around 8.2 with a 5.5t so i would imagine you would want around 9.0fdr...

A light bearing oil on the bearings is all it needs with the occasional strip down to remove any built up dirt/rocks. Check the bearings also (when disassembled) and replace if they are noisy or notchy...

3.5 is pretty powerful. If your not sure what your doing you could end up with a dead motor and/or speedy pretty fast...
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Old 01-05-2011, 04:30 AM   #3
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hmmmm,

the speedo and the motor is hot with 6.4..

arrghh man.. the higher ratio means more top speed?


just only light oil? like any oil types?
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Old 01-05-2011, 04:47 AM   #4
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You're going to burn things up with a FDR of 6.4 and a 3.5 motor.

Here's a suggested gearing guide from Novak for their Ballistic motors which may be a good starting point for you:
http://www.teamnovak.com/tech_info/b...r_gearing.html

I'm not familiar with LRP ESCs so don't know if the one you have has any profiles with timing but make sure you're in a profile with no extra timing from the ESC.

Invest in a temp gun, Pro Exotics PE2 or the one from HPI aren't bad and temp the motor frequently (every minute or so) when you're playing with gearing on that powerful a motor to make sure you're within the temp range recommended by the motor manufacturer.

3.5 is really a lot of power. When I stepped up to one of those from a 6.5 the difference was huge. I prefer a 6.5. The 3.5 is really a handful to manage and everything is under a lot more strain with that much power.
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Old 01-05-2011, 07:55 AM   #5
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The booklet that is INCLUDED with the X12 motors states that 4.0 or higher are recommended for High Speed tracks and TC's with 7.2 - 7.4v
The 3.5 with a ratio of 11.0+ is for a 6v application.

Of course these are just "guidelines"
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Old 01-05-2011, 08:09 AM   #6
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yeah, i use 7.4v 2s lipo.. dont see any 6v lipo... the min is 3.7?????
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Old 01-05-2011, 10:10 PM   #7
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i have geared it at 9.72 for fdr.. is it under geared or overgeared?

the manual for the 3.5t and esc.. it says around 8 something.. i m confused..

i m using the kyosho tf-5 with these brushless stuff..

the esc and motor is still hot..

thanks..
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Old 01-06-2011, 03:20 AM   #8
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come on guys... please help.....
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Old 01-06-2011, 03:34 AM   #9
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Are you racing or bashing up and down the street?
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Old 01-06-2011, 05:05 AM   #10
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i am using it for racing and drag..

jeez.... 6v for 3.5t.. how would i find 6v lipo?

is the 8.2 fdr is fine?
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Old 01-06-2011, 06:20 AM   #11
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Quote:
Originally Posted by RedBullFiXX View Post
The booklet that is INCLUDED with the X12 motors states that 4.0 or higher are recommended for High Speed tracks and TC's with 7.2 - 7.4v
The 3.5 with a ratio of 11.0+ is for a 6v application.

Of course these are just "guidelines"
Quote:
Originally Posted by catalzzy View Post
i am using it for racing and drag..

jeez.... 6v for 3.5t.. how would i find 6v lipo?

is the 8.2 fdr is fine?
A 6V lipo doesn't exist, but as RedBullFiXX mentioned, it is only a guideline. And don't forget the included manual is already existing for some time (when cells where still used).
Does the ESC have "Feel" and "Boost" settings?
Go a few steps back on them.
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Old 01-06-2011, 06:29 AM   #12
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Quote:
Originally Posted by catalzzy View Post
the manual for the 3.5t and esc.. it says around 8 something.. i m confused..
Are we looking at the same manual?
http://www.lrp.cc/fileadmin/lrp_anle...e-090518fv.pdf

You should go for an FDR above 10.0 or 11.0 (as already mentioned)
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Old 01-06-2011, 07:27 AM   #13
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hmmm, yeah according to drag race... low fdr... but.. i also want to use for touring.. when i use the 6.04 fdr for 2 runs.. it was ok..

since i used the 9.72fdr.. motor is hot and esc seem hot too..

i checked the manual and it should be around 8 fdr.. so it seems that i am undergeared or what?? so confusing.. the esc sxx tc spec is all default.. i checked the blinking lights and stuff......
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Old 01-06-2011, 10:11 AM   #14
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What temperature is "hot"?
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Old 01-06-2011, 10:42 AM   #15
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i think around 60 to above.......
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