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10-20-2014 | 05:24 AM

#41536

Ray k

Tech Elite

iTrader: (47)

Joined: Feb 2007

Posts: 3,018

Quote:

Originally Posted by Drifter

Hi folks, need your help :-( .
After racing 1/12th from 1986 till 1990 and 2000 till 2004 I wanted to race again in 2011. So I bought an RC12R5.1, LRP SXX Version 2, new radio and servo. Unfortunately I didnt find the time to use it. Until now! Next weekend I would like to race at our hobby fair. So bought 3 used LRP 1S LiPos and a X20 10.5 stock spec motor. Today I built it and wanted to program the ESC. Off course I selected 3.2V 1S LiPo cut off. Unfortunately, the ESC shuts off imediately after switching it on, even with a fully charged battery pack with over 4.0V.
Is this a known failure? Should I reprogramm the ESC without cutoff or is my ESC broken?
Thanks for your help!

Sounds like you have a LRP SPX, which is not a 1 cell speedo . SPX also has 6 steps for feel and 8 steps for boost. The cut off has 2 steps, lipo or cells.

A LRP SXX v2, has 4 steps for cut off and 10 and 10 for feel and boost .

10-20-2014 | 07:34 AM

#41537

Drifter

Tech Apprentice

Joined: Nov 2001

Posts: 55

From: Europe

Quote:

Originally Posted by avs

I am not familiar with lrp but the documentation could be for a different firmware version than what you have installed. welcome to the digital age!

Thanks for your input, loaded down the firmware v4.0. Included is a new manual and here it is, my LRP SXX V2 works exactly like specified in this manual

.
I have no idea why they changed the amount of voltage cutoffs from 4 to 2 and reduced other tuningpossibilitys as well

, but I really dont care, as long as I can concentrate on my driving instead of bumbling about with my ESC

!

Thanks to all who answered for your opinion!

10-20-2014 | 07:59 AM

#41538

Mr. MR4

Tech Regular

iTrader: (8)

Joined: Oct 2001

Posts: 299

From: Malta, EU

What is the preferred size rotor for 1/12 1s blinky using 10.5 motors? 12.3 or 12.5?

Track has medium grip and size is 100ft by 40ft.

10-20-2014 | 08:31 AM

#41539

mike ivy

Tech Elite

iTrader: (51)

Joined: Feb 2002

Posts: 3,013

From: 1/12th fo’ Life!!

Hello There,

Use the 12.5 Rotor and add more gear

Hope this helps
Mike

Quote:

Originally Posted by Mr. MR4

What is the preferred size rotor for 1/12 1s blinky using 10.5 motors? 12.3 or 12.5?

Track has medium grip and size is 100ft by 40ft.

10-20-2014 | 09:21 AM

#41540

Mr. MR4

Tech Regular

iTrader: (8)

Joined: Oct 2001

Posts: 299

From: Malta, EU

Quote:

Originally Posted by mike ivy

Hello There,

Use the 12.5 Rotor and add more gear

Hope this helps
Mike

Cheers Mike

10-20-2014 | 02:35 PM

#41541

wingracer

Tech Lord

iTrader: (24)

Joined: Nov 2007

Posts: 13,767

I always seem to get better times with bigger rotors in blinky. Boosted was the other way around, small rotors were killer.

10-20-2014 | 03:34 PM

#41542

avink007

Tech Regular

Joined: Nov 2008

Posts: 429

From: Springfield, VA

Quote:

Originally Posted by wingracer

I always seem to get better times with bigger rotors in blinky. Boosted was the other way around, small rotors were killer.

10-22-2014 | 08:23 AM

#41543

Fliggo

Tech Initiate

Joined: Sep 2013

Posts: 31

I have run my 12 scale with the battery across the back of the car because my servo were to deep so it didnt fit, the other way.
Is there any advantage of having it on the side over having it acorss the back?

10-22-2014 | 08:37 AM

#41544

LloydLoar

Tech Master

iTrader: (20)

Joined: Oct 2011

Posts: 1,879

From: Fort Collins, CO

Quote:

Originally Posted by Fliggo

What chassis are you using?

10-22-2014 | 08:43 AM

#41545

Fliggo

Tech Initiate

Joined: Sep 2013

Posts: 31

Quote:

Originally Posted by LloydLoar

What chassis are you using?

Serpent S120 LTX,

Muchmore something ZX 10.5T, Team Orion Vortex R10 och Turnigy 1 cell packs.

Last edited by Fliggo; 10-22-2014 at 09:08 AM.

10-22-2014 | 07:22 PM

#41546

Paco1001

Tech Adept

iTrader: (1)

Joined: Sep 2001

Posts: 121

From: AB, Canada

Has anyone been running the D4 13.5 on here? How is it. I have one on order but haven't picked it up yet.

10-22-2014 | 07:37 PM

#41547

CypressMidWest

Tech Elite

iTrader: (1)

Joined: May 2003

Posts: 4,617

From: Central Ohio

Quote:

Originally Posted by avink007

I always have better runs with the broad powerband rotors in 12th. Faster up front wit the HT rotor, but flatter at the end....

10-26-2014 | 05:51 AM

#41548

EDWARD2003

Tech Elite

iTrader: (8)

Joined: Jan 2003

Posts: 2,208

From: Tokyo, Japan

Fresh body for the Plasma Ra!

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10-26-2014 | 12:50 PM

#41549

OVA

Tech Lord

iTrader: (91)

Joined: Dec 2002

Posts: 10,510

From: WASHINGTON

Gluing 12th foam tires

Last edited by OVA; 10-26-2014 at 04:01 PM.

10-26-2014 | 04:43 PM

#41550

cdraughon

Tech Apprentice

iTrader: (3)

Joined: Nov 2013

Posts: 95

I am getting into 1/12 scale now that a track is back on line near me. I've seen plenty of people ask about roll out and be given suggestions for where to start, but I want to know how to apply the result. I am running 17.5 with 47mm tires. The track is asphalt with about 100 foot back stretch. What should the roll out be compared to? I prefer to understand the application rather than just "start with 90".

Can someone explain this?