The Wease

iTrader: (63)

my friend used a spx this past weekend in mod TC using 5.5 and no heatsink on esc with no thermal issues. Air temp was mid to high 70's track temp was 110

Korey Harbke

iTrader: (13)

I ran profile #2, with a 4.5 and the esc was barely warm (even without the heatsink). It worked great.

Also, has anyone noticed the brakes have improved over the Tc spec in the SPX? For some reason my SPX feels like I just put brembro brakes on my car LMAO.

-Korey

kn7671

iTrader: (16)

No - on profiles 1-5 or 6, the speedo acts like a Sphere '07, so no special gearing is required like profiles 7 and 8.

billythekid

iTrader: (9)

I read somewhere that profile 1-4 on SPX Stock Spec is the same as profile 1-4 on Sphere TC, which is supposed to be more aggressive then the regular Sphere Competition. I wish LRP could publish more info about this.

Thanks guys.

billythekid

iTrader: (9)

Hey Korey, thanks for sharing. What was the approx air temp at your track?

How is profile 2 with SPX Stock Spec and 4.5T, as compared to Sphere TC, assuming you have used Sphere TC previously?

The Wease

iTrader: (63)

My bad I thought it was a 5.5

billythekid

iTrader: (9)

I see, it was Korey you were referring to

Korey Harbke

iTrader: (13)

No worries, I wasn't even 100% sure you were talking about me

Profile 2 and 3 felt the same as they did on my TC spec I had previously. I will probably add the heatsink and wire a fan up regardless though. It never hurts and only makes the ESC run better than it already does right now. I always remember people from Novak saying the cooler the ESC is, the better. It just works better, plus it puts less strain on all the components.

-Korey

outlandr91

I never messed with a esc like this, I just got the SPX and a 17.5 Duo. The track is 100' x 36'. Where should I start with a FDR? Thanks

The Wease

iTrader: (63)

On a track 100' x 60' I was at 3.92 fdr .Duo was set a 0 timing
spx settings were 1-7-2-2 motor was at 146 degrees after 6 minutes

burito

As for the comparison of the profiles between SPX StockSpec (#80710) and Sphere Competition (#80700) or Sphere Competition TC-Spec (#80750)

80700 vs. 80750:
- later batches of both models had identical profiles and hardware, only difference was the integrated heatsink/fan on 80750.
- earlier batches of 80700 (before 2007-edition came out and first batch of 2007-edition) had slightly different hardware but software was always identical.

profile difference between 80710 vs. 80700/80750:
- profiles 1-4 are identical on all speedos.
- 5-8 on 80710 are the real stock profiles, 7+8 are the extreme ones were you need much lower gearing.
- 5+6 on 80710 are actually fairly similar to 7+8 on 80700/80750 (but not identical)

hardware difference between 80710 vs. 80700/80750:
- apart from the obvious (heatsink/fan) there is also a hardware change in 80710 which was needed to gain most of advanced timing features.
- this change also had a nice side effect of a stronger push brake on 80710 (dragbrake is not affected).
- fet's and other hardware is identical between all 3 speedos.


Complicated to explain, but I hope I could help a bit.

burito

Correct for products sold until half a year ago or so but not now anymore! It was decided to include the sensor lead with the speedos now instead of the motors. So all LRP sensored brushless speed-controls now have a 200mm sensor wire included while the LRP brushless motors don't come with a sensor wire anymore.

Of course there can still be stock in hobbyshops of previous versions!

SlowerOne

I bought my last LRP motor over a year ago, so sorry for misleading people. LRP build 'em tough, so you won't need more than one motor!!

billythekid

iTrader: (9)

Hi Reto, I am glad that you jumped in to answer these questions. It cleared up a lot of confusions and also made the transition much easier. I have purchased 2 SPX Stock Spec and plan to test it this weekend. I may purchase 1 or 2 more after testing it, since I have multiple cars.

May I know if the heat sink is needed for Stock/Mod 2wd buggy, Stock/Mod Truck, 10.5T Touring Car? I prefer not to use the heat sink, so I can interchange the ESCs whenever necessary as the heat sink is too tall for my B4's stock body.

Will the performance drop when the ESC heats up?

billythekid

iTrader: (9)

Hey Reto, by the way, would the upcoming SXX have any super agressive profile for stock motors, similar to SPX Stock Spec's profile 7-8?