eichkay

iTrader: (4)

Rules are changing next year aren't they ? Id avoid buying a new esc so late in the year until you know the rules of the class your going to run in.

RedBullFiXX

iTrader: (34)

http://www.lrp.cc/forum/viewtopic.php?f=4&t=6883

Ok, so to me this sounds like the SXXv2 does not have the same boost capabilities as the SXX SS has.

On a side note.
One can find very good deals on previously driven Tekin and LRP speedos here at RCTech

Nilks

V2 does have boost.

peter george

iTrader: (377)

I thought so, will it help if advance the timing on the motor ,and what roll out do you recommend for 17.5? Thank you again for your help.

peter george

iTrader: (377)

Wow I was not aware of that ...definitely good advise, thanks.

peter george

iTrader: (377)

is that you looking for an SPX? in the wanted threads?

tc3 racer sc

hi im still trying to get the gearing down for my hotbodies cyclone i have tried every thing from diffrent fdr /spurs but mostly used a 100 spur where i need to gear it AS for my cyclone tc i have a speed passion pro 2.0 with boost/ timing np there plse help

Nilks

No - I just sold my SPX. Looking to get a Tekin RS Pro or HW Extreme Stock.

andrew-01

iTrader: (22)

So I wonder if they will be coming out with a SXX SS Ver2?

davidl

iTrader: (41)

You can do this with a small 1C pack as long as you wire the correct polarity. Using the main ESC switch the ESC will then send 6.0 VDC to the receiver. The receiver will then feed the servo and transponder 6.0 VDC.

You will prossibly have problems wiring in a 2C pack as the BEC of the speedcontrol might have a hard time handling the 7.4 VDC from the 2C pack added to the main 1C pack that runs the car. That means the speed control will need to be able to handle 11.1 VDC (12.6VDC total) and I dont think it can do that. I think it has a limit of 9.6 VDC for 8 NmHD cells. Those 8 cells may peak at around 12 VDC, but I am not sure on this.

I ran the 1C battery (450mah) in this configuration for a couple years and had zero trouble. It was the fastest combination I had with the SPX Stock Spec speed control.

davidl

iTrader: (41)

The SXX SS is already in Version 3.

morgy

i've just bought an spx stock spec and could do with some help gearing it, i'm running a 13.5 motor in a t/c on a tight carpet track

Nilks

No. The software is in version 3, but the unit itself is "only" version 1. As far as I know, they will put a SS V2 on the market.

adam lancia

iTrader: (2)

Thanks for the info David, I had read that in the Tekin thread about running a small 1s Rx pack along with the main 1s pack and was going to try it out once the ESC gets here. Would I wire it up the same as the attached picture in place of the 2s Rx pack?

davidl

iTrader: (41)

I had never seen the picture you provided. It is very interesting that the Tekin application used the 2C pack in that circuit. By the way, I interpret the drawing to show the 2C pack in the existing switch circuit of the speed control. Is that correct? I know some people that have connected receiver packs to the Tekin speed controls and their motor would run without a main battery connected to the speed control. I never knew how they connected it, but this looks like a candidate. Sort of makes me think that this type of connection in that speed control will provide more voltage to the motor than the main battery supplies. I have seen several people blow up their receiver packs when connected to the Tekin speed controls, also indicating something funny was going on.

Now to the LRP speed control. I have done this with a Sphere and an SPX Stock Speck version. The 1C battery goes in the switch wiring of the speed control. I didn't explain that in my earlier description because that was mentioned in the comment I quoted. So, now the thing to do is figure out which wire, both are black, comes directly from the big battery, through the speed control to the switch. It can be done with a volt meter. Disconnect that wire from the switch and connect it to the negative side of the small 1C battery. Then connect the positive side of the battery to the switch and you are ready to mount it in the car. You will now measure 6.0 VDC to the receiver from the connection from the speed control, indicating that the BEC of the speed control is functioning properly. That will enhance the operation of your radio system, too. By the way, my battery was a 145 mah 1C lipoly for small helicopters. It was very light and easily mounted in the car.

I put a small JST connector on the two outputs of the small 1C battery for charging. This circuitry has been verified with Reto, but I don't think they will honor warranties if you blow it up while wired this way. They will have to answer that.

Hope this helps. Good luck.