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Old 04-21-2011, 06:58 PM   #421
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I want to tear down my LRP vector 6.5 for cleaning,any advise would be helpful?

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Old 04-23-2011, 05:14 PM   #422
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ive just checked the stats for the x12 and it says input voltage for the 3.5 is 4.8-6 does that mean i cant use my 2s lipo with this motor sorry for the noob question!
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Old 04-24-2011, 04:05 AM   #423
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ive just checked the stats for the x12 and it says input voltage for the 3.5 is 4.8-6 does that mean i cant use my 2s lipo with this motor sorry for the noob question!
If your racing, you will NOT need a 3.5 X12 in touring car The fastest motor ive ever seen any of the pro's use is a 4T and that seems overkill for the lrp motors as they are very fast compared to others
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Old 04-24-2011, 06:13 AM   #424
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I'm not using it for racing as I've only just got into the hobby just want to go as fast as possible to show my mates and as it's my birthday soon going to get the motor as a pressie!
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Old 04-24-2011, 06:41 AM   #425
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I'm not using it for racing as I've only just got into the hobby just want to go as fast as possible to show my mates and as it's my birthday soon going to get the motor as a pressie!
Id recommend a 4T octa then, it should be plenty fast enough, and wont kill lipo's if they arent up to the task of the 3.5
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Old 04-24-2011, 07:33 AM   #426
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Thanks for the quick replys it's not the lipos I was worried about it was just the fact the input voltage for the 3.5 is 4.8-6 and the my 2s lipo is 7.4! Does the esc regulate the voltage the motor receives? Sorry again for the simple questions!
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Old 04-24-2011, 08:42 AM   #427
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Originally Posted by Jammin23 View Post
Thanks for the quick replys it's not the lipos I was worried about it was just the fact the input voltage for the 3.5 is 4.8-6 and the my 2s lipo is 7.4! Does the esc regulate the voltage the motor receives? Sorry again for the simple questions!
good speedo's most definitely do not reduce the voltage to the motor. we pay extra for ones that have minimal losses.

i have not heard of a limited voltage motor, but lrp does spec under 4.0 turn motors as reduced voltage. a lower turn means higher rpm per volt input, so as the # of turns go down, the max voltage the rotor can take will go down.

i suspect that the rotor would not survive at 2s voltage levels' higher rpm, and you will also have a good chance to burn up your speedo. i would suggest you verify your speedo's motor limits.

however, it might be interesting to try, and you can report whether the rotor explodes before the speedo overheats!
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Old 04-24-2011, 08:54 AM   #428
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Well is going to run it with a 120a xerun esc with says with 2s lipo can go down to 3.5 so that was what was confusing me so you don't recommend it then? Mite still give it go and report back!
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Old 04-26-2011, 04:23 AM   #429
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Can anyone please help with a good zero timing setup for the SXX TC V1 and the LRP 17.5 X12? Im running an XRAY T2009.

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Old 04-26-2011, 01:35 PM   #430
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Default x-12 13.5 in 1/12 with 1S

Ran the motor with the 12.5mm rotor in 1/12 last Wed. The timing in the motor was 0000 and the LRP SXX SS speedo was 1,5,8,0. The motor was a little sluggish and not as fast as the same combo with the 1S rotor. Final temp was 195 deg F. 1S rotor is definitely the way to go as it is fast enough and it temps at 160 deg F. Cudos to the speedo as it gives you a chance to run the 12.5 rotor when that was not the case in the past.
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Old 04-28-2011, 01:52 AM   #431
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Hi Mate,what track do you run at? did you end up trying the 12.25 1s rotor?

also what is the difference with the 12.25 1s rotor and the standard 12mm rotor?

going to a hugeee trcak the weekend where power is the only thing needed down the back straights

http://www.brooklandraceway.co.uk/in...d=46&Itemid=64

Thanks

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Originally Posted by NiMo View Post
The reason I ask is that running the RS Pro and X12 with 12.5 I am already geared at 8.5:1 for a 155ft main straight, but I am having to run the current limiter at 90 as any more gives too much punch causing the car to understeer.
I am thinking a smaller rotor can be compensated by using more current (big step between 90 and 94) and at the same time run a little cooler (78C - 86C).
Car can reach 58mph in current set up, and can jump one (if not 2) off the line.

Current settings:

Schumacher Mi4LP
Tekin RS Pro (212)
LRP X12 - 13.5 (4 dot -10)
IP 5800mAh (60c)
FDR - 8.50:1
48dp 85/18

Set Up
Voltage Cut Off : 2s
Motor Type : BL-FW
Timing Profile : C2
Tick Box : Sensored

Brake
Drag Brake : Off
Brake Strength : 100
Push Control : 50
Brake Minimum : 5

Throttle
Throttle Profile : 4
Neutral Width : 2
Current Limit : 90
Reverse Speed : 100
Throttle Minimum : 5

Timing
Timing Advance : 100
Boost : 50
End RPM : 20016
Start RPM : 5443
Turbo : 14
Turbo Delay : 0.12
Turbo Ramp : 2
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Old 04-28-2011, 05:55 AM   #432
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Quote:
Originally Posted by prodriver View Post
Hi Mate,what track do you run at? did you end up trying the 12.25 1s rotor?

also what is the difference with the 12.25 1s rotor and the standard 12mm rotor?

going to a hugeee trcak the weekend where power is the only thing needed down the back straights

http://www.brooklandraceway.co.uk/in...d=46&Itemid=64

Thanks

Ricky Copsey
Run at Aldershot
Dropped gearing to 9.0:1 (17/85)
revs a bit more but runs much cooler

This (hot) Monday just gone I was running 74-75C with 13.5

Also standard in my x12 was 12.5 (black rotor)

Was told that a number of 10.5 and Mod runners run the 1s rotor, they just don't mention it on the forum many use in the UK due to too many wanting to create arguements over silly things.

but yes the 1s rotor works, bit less torque, more revs, lower temps.
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Old 04-28-2011, 11:18 AM   #433
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Some more info on Rotors.
In general, a stronger rotor will give you more torque, while a weaker rotor will give you less torque, a smoother powerband and more RPM.

Here is a listing of the LRP X-12 based rotors from strongest to weakest:

For Mod classes:
X-12 Optional Sintered Rotor, 13.0mm (recommended for 4x4 Short Course)
LRP Works 13.0mm X-12 Sintered Rotor
X-12 Optional Sintered Rotor, 12.5mm (Standard in X-12 mod motors)
LRP Works 12.5mm X-12 Sintered Rotor (recommended for TC Mod)
X-12 Optional Sintered Rotor, 12.0mm
LRP Works 12.0mm X-12 Sintered Rotor (recommended for 1/12 Mod)

For Stock/Spec classes:
LRP X-12 Stock Spec Rotor, 12.5mm (Standard in X-12 stock spec motors)
LRP X-12 Stock Spec 1s LiPo Rotor, 12.25mm
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Old 05-03-2011, 01:45 PM   #434
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Hi,

I'm running a T3 11 with a X12 (13.5t) and the new LRP Stock Spec V2 but struggling to find the correct gearing. Do these motors like to rev or be geared up ? My local outdoor track has 45m straight long sweaper etc. I've tried 6.0fdr upto 4.8fdr which hasn't really made much differance to the temps. I have also only used the four dot insert. Do I need to gear up more or gear way down to get it reving ? Any suggestions ?

Thanks.
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Old 05-04-2011, 01:46 PM   #435
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Originally Posted by S.A.W View Post
Hi,

I'm running a T3 11 with a X12 (13.5t) and the new LRP Stock Spec V2 but struggling to find the correct gearing. Do these motors like to rev or be geared up ? My local outdoor track has 45m straight long sweaper etc. I've tried 6.0fdr upto 4.8fdr which hasn't really made much differance to the temps. I have also only used the four dot insert. Do I need to gear up more or gear way down to get it reving ? Any suggestions ?

Thanks.
Anyone ? also what's a good starting fdr for non boosted and should I use the 'oo' insert or keep the 'ooo' in ?

Thanks.
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