Sidewinder SC - Page 6 - RC-Monster Forums

09:46 AM

Patric,
can you say a few words about timing guidelines for these 4 pole motors?
For example, how many degrees of timing will give maximal efficiancy?

fastbaja5b · 11.15.2010, 09:57 PM

What timing settings would reduce the cogging on start up (quite noticable). I'm running a Polyquest 5050mah 35C 2s Lipo in an SC10. Also using a Spektrum receiver cap, but would running an external BEC aid the cogging at all? Is the Sidewinder's PCB meant to feel like it's moving fairly freely around within the case?

slimthelineman · 11.15.2010, 10:30 PM

Up your start power to start and see where that puts you. I usually run med on my setups and it takes care of the startup stutters. If you need more try playing with the timing as well.

fastbaja5b · 11.21.2010, 05:46 AM

After deciding that the SC10 was stupidly overpowered with this, I picked up an SCRT10 and transferred the gear over, stock gearing of 13/46.

Motor is a perfect fit for this truck, plenty of power, ran it for 5-10 mins outside (temp out 90f) Battery (5050mah 35C Enerland 2s) didn't get above ambient, motor peaked at 110f but the ESC hit 160f. As I'd stated in my ""mini review" the motor is awesome, the ESC not so much, and this just proves that again. Ordered a MM Pro as a permanent fix hopefully. Sorry but I don't think too much of this ESC so ebay it goes. Motor however is schweet!

E-Revonut · 11.21.2010, 01:32 PM

Just bought a combo yesterday and put it in my SC10, I couldn't beat the price. My LHS has the combos for $100 and yesterday was there yearly sale where they take 20% off everything and I had a gift card, I walked out with it for $61. Now my SC10 pulls wheelies and I can save my spec motor for racing and not worry about temps.

phatmonk · 11.21.2010, 08:21 PM

I love the 1410 in my Slash 4x4 on 2s.I paired it with the MMP so never tried the SIdewinder.

AL3xGR · 11.22.2010, 08:49 AM

60$ ??? That's luck....

E-Revonut · 11.22.2010, 09:09 AM

Quote:

Originally Posted by AL3xGR

60$ ??? That's luck....

Really it was $86.39 but I had a gift card for $25 so out of pocket for me was $61.39 after tax

AL3xGR · 11.22.2010, 09:31 AM

heh..

fastbaja5b · 11.22.2010, 10:09 AM

Just assigned my sidewinder SC speedy to Slash 2wd duty with a 13.5 Brushless. LED's are now dim as all s#it as the BEC is obviously weaker than that of the VXL speedy (or lower voltage), standard 5mm LED's just 4 of them in RPM light buckets up front. Only changed the Castle in there so I could adjust esc timing.

Ended up using a BEC from the Balance tap of my battery direct to the LED's but still bloody disappointing once again on the ESC front. Even $30 Hobbywings have a 6V bec now don't they?

Pdelcast · 11.22.2010, 12:34 PM

Quote:

Originally Posted by fastbaja5b

Just assigned my sidewinder SC speedy to Slash 2wd duty with a 13.5 Brushless. LED's are now dim as all s#it as the BEC is obviously weaker than that of the VXL speedy (or lower voltage), standard 5mm LED's just 4 of them in RPM light buckets up front. Only changed the Castle in there so I could adjust esc timing.

Ended up using a BEC from the Balance tap of my battery direct to the LED's but still bloody disappointing once again on the ESC front. Even $30 Hobbywings have a 6V bec now don't they?

We went with a 5V BEC on the SCT -- for a very good reason.

There is a certain 2.4ghz receiver on the market that doesn't work right on 6V...

The Hobbywing ESCs use a standard dropout linear -- that means the pack voltage has to be 2V above the BEC voltage, otherwise the BEC voltage follows pack voltage minus 2V. Not really a good solution. But they use it cause its VERY CHEAP.

The SCT uses a low dropout reg, the dropout is about 1V at maximum BEC output power, less than half volt under normal usage.

fastbaja5b · 11.23.2010, 09:36 AM

..well another day another problem My Castle Field Link and MM Pro arrived today, so have hooked up the Card and Sidewinder to use Castle Link, all good, but out on a run I tried to use the card to change a setting and nothing. Receiver lead into card, plugged in battery, turn on, LED card has one green light on and green light is flashing on ESC. I know the card is fine as I was able to change settings on the MM Pro easily.

So, so far we have a Sidewinder SCT that:

Runs hot (140-150f running after 10 mins in an SCRT10 geared 13/46, Motor and Battery temps around 100f)
doesn't work on Castle Field Link
Has a Weak BEC (5V although unless you're running LED's pretty much a non issue)
Circuit board moves around inside the case.

Are my expectations unreasonably high?

Arct1k · 11:39 AM

Did you update the castle link firmware as per the Castle web site to work with the SCT controller!!!

3.27 Beta 10/14/10 11.1MB Added Sidewinder SCT V1.29 software
Added Thunderbird V3.24 software
Updated Car and Air Field Links for compatibility with latest software versions

Or are my expectations too high?

The temps are a little high but that is probably the biggest truck that this ESC is designed to support. So its not suprising that the temps are towards the upper range.

I would have prefferred and adjustable BEC but that would have just upped the price... This is intended as a V budget setup.

slimthelineman · 11:59 AM

Wow....... Don't think you expectations are too high, but your whining is off the charts. For every one person that can't get it to work there is probably a hundred that it works great for. So what's the real issue here? I mean it's not like complaining makes it work right? Figure it out or get rid of it. Fishing for a magical solution or answer on the forum by complaining about everything YOU feel is wrong is disrespectful in my opinion. Bustin your chops a bit but c'mon man you got a few cars and some experience, use it. Don't expect your budget system to run like your race speedo either. As it's been said this is a spec system so how can you compare it to the mmpro?

Pdelcast · 11.23.2010, 01:30 PM

Quote:

Originally Posted by slimthelineman

Wow....... Don't think you expectations are too high, but your whining is off the charts. For every one person that can't get it to work there is probably a hundred that it works great for. So what's the real issue here? I mean it's not like complaining makes it work right? Figure it out or get rid of it. Fishing for a magical solution or answer on the forum by complaining about everything YOU feel is wrong is disrespectful in my opinion. Bustin your chops a bit but c'mon man you got a few cars and some experience, use it. Don't expect your budget system to run like your race speedo either. As it's been said this is a spec system so how can you compare it to the mmpro?

Ah, I kinda like the feedback. Helps me on the next revision...

You do have to update the software in the field link for it to work with the Sidewinder SCT.

The ESC kinda feels cheap, cause it's kinda cheap. What do you want for $99 for a combo with a tremendous motor?

Really, the motor is about 70% of our cost. We were shooting for a ROAR legal (for SCT racing) motor and ESC. We know how much it cost to make the motor, so I designed an ESC that would give us the ability to hit a $99.00 street price, yet still perform well enough to handle the motor.

150F - 160F is nothing -- the ESC will handle about 300F without damage. It has a two level over-temp detection, which means it will punish you if you push it too hard (if it detects an extreme temperature ramp, it will shut down until temps settle down -- shows as a 30-40 second shutdown.) We use 200F as our heat sink maximum temperature for normal operation.

Just rambling...

Patrick