Im running mine with no fan on my CR buggy, esc is barely warm with a 17.5. A fellow racer at my local track is running a 10.5 with his GT 2.0 and no fan and has had no problems. I would make sure the overheat protection is enabled and run it.
Tom

Thanks, but a 17.5 and a 10.5 is not a 7.5... anybody know for sure if I can run this without a fan?

Do this....can you double side taped the fan and have the fan taped onto the chassis, at stand up posiition, blowing toward the ESC and still fit under the body...? SP has the 25mm fan and it MIGHT fit under the body...

Yes, the fan might not blow directly to the heat sink but with that position, it can still blow toward the ESC with some kinda cooling...better then nothing.

And I have use 6.5 on TC without fan on my GT2 Pro...I am sure TC ran hotter on the ESC then off road....

Hey Branding. Imo you don't need the fan when running off road period. Never mind the wind of the motor. That takin setup you posted was pretty slick, you must be building a second car or looking for more smoothness, which the SP will deliver in mod.

Imagine that, boost on a mod motor, who'd a thought.:D

Btw I think 323 will have to much drag brake for off road even when turned off.
I had to add some throttle creep with the trim button.

I run an 8.5r with absolutely no problems without a fan. You are good to go without a fan in a 7.5r. I would just keep an eye on the temp for the first couple of runs.

JP

Thanks! that's what I needed to know. 6.5 on a TC with no fan puts far more load on the esc than 2wd buggy.

Thanks! perfect info

Thanks Ritchie... Same car actually, but just rebuilt it into it's rear motor config. And since now that I have a lot more room under the body, I can run a better mod speedo than the Tekin. Even though the SP is the largest speedo I have ever seen, it is far smoother, and much more robust for the low turn mod motors. I'm excited to get it wired up now. My first couple runs, what kind of temp numbers should I be trying to keep under when temping the heat-sink.

I forget the official max temp, but if you spit on it and it sounds like Bacon frying its to hot.

Seriously, I don't know. But I don't think I've ever temp one over 110 - 120

Thanks Ritchie.. appreciate it. Ill let you guys know how it runs, and what kind of temps I see.

Need help please. After hours of searching threads and researching prices for all kinds of esc's , I have decided to get either the speedpassion gt2.1 ex or the gt2.1 pro stock and the V3 17.5 motor. My question is what is the difference between the 2 esc's. Is it just the software? I will be racing stock 17.5 short course class and anything goes as far as boost and timing. Do I have to purchase something else to upgrade the software or does that come with the esc?

Thanks for replies......

Fan
 

If you have room mount the fan next to the esc blowing on the solder posts. That's where most of the heat is anyway. I have ran a 4.5 on dirtoval without a fan and ran a 3.5 overgeared but had to mount the fan like mentioned because the wires kept coming unsoldered:D

robzzz
Go with the 2.1 Prostock. It can handle hotter mod motors if you wish to go that route sometime in the future. The 2.1 comes with the latest 528 stock. I believe the EX is geared more for pan cars and 1 cell lipo racing. You will need the LCD program card for future upgrades from the Speed Passion site. It makes it alot easier when you interface with your PC or laptop or just alone with speedo.

Got a question, although I suspect I know the answer. Is there any way to load the various software versions onto my laptop so I don't need an Internet connection to change software on the speedo? Because right now if the track doesn't have WiFi, no track side changes, or at least no way to do it that I'm aware of.

Yes, but you will need the LCD program card as the interface between your speedo and laptop. It can be found here.
http://www.speedpassion.net/en/produ...=SPLCD01&c=OPT

The latest firmware...V1.35 is here.
http://www.speedpassion.net/en/produ...ESC&t=download

If you already have the LCD card your good to go.:D

I was lazy and didn't read through the entire thread are the citrix stock spec esc or the short course master esc brushless compatible? I was just wondering because that would be amazing if they were I am trying to switch to BL with the lowest possible cost but still getting decent quality.

Like our driver mentioned....what you need is GT2.1 ProStock.

EX has the smaller heatsink but it is mainly design for the 12th scale or 10th WGT car that has very low body type without much room for the heatsink.

GT2.1 with ProStock can handle your 17.5 with our latest supercharger software.

All of the GT ESC sharing the same firmware. 1 set of firmware for all these ESC to use, you just have to pick the right internal software for your class/motor to use.

And yes...you need to purchase the LCD programmer card in order to connect the ESC to your netbook/computer.

Once you downloaded the V1.35 onto your computer, you DO NOT need internet access to access your firmware...you just need your LCD programmer card to connect your ESC to Computer and let them do the talking. You choose your SOFTWARE within at trackside or practice, without any WI-FI required...

But you will need your COMPUTER and LCD Programmer card in order to change software....you just need your LCD programmer card if you want to change setting but using the same, installed software.

No...they look the same, but totally different. We purposely make them different because Club Spec ESC has no timing adjustment, is design for club racing, ROAR sportsman racing, or any kind of no timing racing...

Short Course master has timing adjustable feature....and other features that club spec not required to have. You use club spec because you have to meet your track requirement...you use SCM because the class that you are racing does not have any restriction on the ESC setting.

For the speed programmer card needed to update the software shown in the link from speed passion posted above, is that the same one that comes when you buy a combo set? Like the silver arrow v2.0 w/ cirtix motor?

No...

The LCD card has 2 lines of LCD reading on the screen....not just the number like the LED card that came with the ESC.

http://www.speedpassion.net/us/produ...=SPLCD01&c=OPT

Bingo. I thought when you ran through the list of available updates from the USB software they were being loaded from the website, but sounds like I was mistaken. So, when you load the latest USB software (V1.35 right now), the various ESC software profiles are loaded onto the computer with the USB software? Sweet. I already have the LCD programmer and have been changing software, just wasn't aware I could do it without internet access.

Thanks, any idea of when you'll be getting them back in stock?

Glad you get that figure out.....just ask away here if you have any question.

Couple days...check tomorrow or latest Thursday...and hurry, I know there is a backorder list at the shop about this card.

I have a few more questions about 2.1 pro stock. The only class I will be running is short course truck 17.5 class with a sc10 on 2 cell lipo, boost and timing are allowed. With the programming box that comes with the esc are you able to change settings 12-15 that are the boost level and rpm engagement settings or do you need the programmer card for that. On the pictures of the program box I noticed that it only went up to like 10 on the description of the settings. Does both the pro stock come with boost setting and supercharger options?

Is the 2.1 pro stock paired with a 17.5 v3 better for short course truck racing than the speedpassion short course master 17.5 combo? The price sure is nice on that combo, but didnt know if it would be able to compete and just hold me back. I am just a little above the middle of the pack driver.

The more I look at stuff the more I keep changing my mind.






Thanks for replies

robzzz
Yes and Yes! I actually used similar setup to win 1st place Amain in Prostock SC at CRCRC! I used a GT2.0 Pro w/17.5V3 and 101212stock. I posted my speedo setup and pic on first page.:cool:

Just upgraded to 528 mod with a 7.5 ORCA motor, can people recommend any settings to start with.

This is for a 2WD 201 Vega and Cougar SV. LPF in my 2WDs and GT2 Pro in my 4WD

I'm also planning this for my Tamiya 511, but need to get a new motor first, not sure whether to go 6.5 or 8.5 and use the boost etc.

Cheers,

Mike

Just an update. Indeed as suggested it was a sensor wire issue, Installed a fresh sensor wire and the bench test worked. Tonight i used it in race trim tonight. It ran flawlessly and temperatures where under control.

Thanks speedpassion family! :)

Mike
Get some blank setup sheets for 528 mod here.

http://www.speedpassion.net/files/Sp...m_528Stock.pdf

Write down the default settings for 528 mod as a referance. I would then start with Cockerill's 422 setup below as a base. You can compare the two. 422 is "hotter" and more aimed for stock so I believe settings should be pretty safe. Watch temps!

http://www.speedpassion.net/uploadfi...%20-%202wd.pdf

I used 528 mod with 7.5 in 2wd and 4wd for the past few months with most of the settings near the max without any problems. Its the last sc setting you want to tame down to -3 or so to keep motor temps in check. Especially in warmer weather. I used 23/78 geared in a b4 and 22/78 in a b44

Okay, so that puts you at 8.81 FDR. Thinking about trying an 8.5 D3 in my B4 this weekend with the 205Mod software. I assume somewhere 8.6 to 8.8 FDR is a good starting place? JP's setup sheets shows 78/26 with a 9.5, but I have no idea what the tranny ratio is in a XXXCR.

The XXX-CR ratio is 2.43:1.

Thank you sir. Whole new learning curve. Flashlight racing died here for several years after K&M closed, so I just left brushed stuff in my cars for the once a twice a year they got raced. Really picking up steam here now so I've put in BL and trying to play catch up. Almost makes me miss truing comms, and testing spring combos and brushes and carrying a lathe with me everywhere. I said almost LOL. Now dangit, where did I put my spring post tool? Yeah, I still have one.:cool:

hey guys, im looking into new esc for my SC trucks .. so im looking at the GT2.1 prostock . is the lowest this can go is 9.5 ? i wanna running 7.5 d3
thanks Rob

Accidentally posted in the on-road thread because I didnt see the offroad thread for SpeedPassion but was re-directed to here...

I am getting back into RC cars after selling off all my equipment and have recently been given the Speed Passion GT Competition Brushless ESC v1.1 (720 amps) and a 13.5R Brushless Motor ver 2.0. I am going to be putting it in a 1/10th 2wd buggy.

I am looking at getting a 3.0 Competition 8.5. Will the V1.1 be suitable to drive this motor? Will I see any issues? I see their is a new GT2.0 and 2.1. I have liked the Speed Passion brand and would love to have it power my 2wd buggy.

By no means am I a great racer. I get to the track twice a month and just like to mess around. I like to be competitive though.

Thanks!

Chirag

Rob
You can go down to 5.0t brushless with the 2.1 Pro Stock.:cool:

Yes you can use 8.5. I found this link with specs on your V1.1. Check it out.
http://www.rctech.net/forum/r-c-item...n-1-1-esc.html

Sweet Deal ...

thanks again david



Rob

http://i811.photobucket.com/albums/z...otos/sc010.jpg

quick question for you guys do I cut this off and solder it to the motor and do they make a longer sensor wire the one that came with the combo is way to short thanks

?????
 

hello

getting back into the hobby. please what is the difference between GT2.1 Pro Stock Brushless ESC and Cirtix Series "Stock Club Race" Sensored Electronic Speed Control?

thanks

On the website, we called the ESC motor limit to 9.5 simply because the ESC itself uploaded with the Supercharger software within....IF the user not handling the software/setup correctly with motor hotter then 9.5 (like 8.5 and faster)....motor will be blow up within minute. The note about motor limit to 9.5 is simply a caution (Liability issue)........and we expect customer to ask question about the true potential of the GT2.1 ProStock.

Gt2.1 ProStock can handle as high as 5.5T motor, so does GT2 LPF. GT2 PRO has no motor limit...however, if using software like 528mod/528stock (with supercharger) on any motor faster then 10.5T....special caution has to be address. The best is...ask the setting or check out our website for the specific setting on the specific firmware in order to avoid your motor blow up in minute...

Yes, I still have (3) V1.1 running perfectly....it will run on 8.5 motor without problem.