LRP SPX, does it require a fan with a 6.5t brushless?
 

I've got an LRP SPX running a speed passion 6.5t brushless motor, geared with 20t/78t.

At the club last night night, the temperature cut-off was cutting off power on the last lap of the race. I had a few people check and the drive train is smooth enough, and the gearing should be ok.

I know the ESC can take down to a 5.5t, but I'm just wondering, to go down to a 6.5t, does it need fan? Would the installation of a fan reduce the temperature to a safe level during racing?

A fan on the speedo would definitely stop it cutting out. Try one like this http://www.apexmodels.com/gbu0-prodshow/MR-25FAN.html

was the esc definately over heating as i had this problem before and i had a dead lipo cell!

if defo the esc try 1 of these from apex http://www.apexmodels.com/gbu0-prodshow/MR-U30FAN.html few more quid then the 1 whiskers said but i been reading what people on other posts have said n there mint.

Cheers for the suggestions guys.

The 2nd suggestion though, might be a bit big as it looks like the ESC can only fit on a 25mm fan

Try this one http://www.apexmodels.com/gbu0-prodshow/MR-U25FAN.html

I run one of these in a micro and its taken lots of abuse and works very well.
I did have a cheap one in before which lasted 2 meetings before it failed.

The LRP SPX has an internal Temp-Check System, it tells you if the ESC has overheated or not.
http://www.lrp.cc/fileadmin/lrp_anle...e-080520-e.pdf
Look under "8. Special features"...

Yeh I've checked the temperature and it defo cut out due to overheating.

Which mode are you running the speedo in ?

You mean in terms of forward/reverse?

It's in reverse enabled mode

There are power profiles, 4 to choose from. And also drag brake profiles as well.

Everything is set as default.

Mode 2. Forward/Brake/Reverse - Forward/Brake
Selected = Forward/Reverse

Mode 3. Power Profiles
Selected = Linear

Mode 4. Auto/Dragbrake
Selected - No Automatic Brake