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New Sanwa MT-44 4-channel 2.4GHz radio system

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New Sanwa MT-44 4-channel 2.4GHz radio system

Old 12-30-2016, 09:45 PM
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did you unpack or unzip the file?
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Old 12-30-2016, 10:14 PM
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Originally Posted by RC*PHREAK
did you unpack or unzip the file?
I figured out what I was doing wrong. Got it updated
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Old 12-31-2016, 11:30 AM
  #78  
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so far i've only bound one of my rides to the MT-44. i used the quick setup feature. one of the options that isn't mentioned in the manual that i could see is the esc type. it asked something like "high class esc" or "low class esc". i wonder if that was a change in the firmware.
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Old 12-31-2016, 03:37 PM
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Does this support any fhss2 receivers
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Old 12-31-2016, 03:38 PM
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Originally Posted by lil-bump
Does this support any receivers without telemetry built in like the 380
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Old 12-31-2016, 05:00 PM
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Compatible receivers are listed on the product page:

http://sanwa-denshi.com/rc/car/propo/mt-44.html
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Old 12-31-2016, 11:29 PM
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I have some updates as promised...

Unfortunately I wasn't able to race on Friday, but I did get about 2 hours of solid practice in, which is probably longer run-time than if I'd been racing, so it's still an interesting touch point.

The battery (3 x 750mAh AAA Panasonic Eneloops) voltage dropped from 4.2v to 3.8v during the course of the run, but didn't go below that. 3.8v is actually still higher than the nominal 3 x 1.2v of 3 x NiMH, and if I remember correctly, the discharge curve of NiMH should be reasonably flat. The battery gauge on the MT-44 currently indicates about 75% remaining. If that is true, then you'd get about 8 hours out of AAAs, and probably double that out of the optional LiPo. It's too early to say if that's accurate or not, and I'll try and post back as I learn more.

I also got a chance to take some additional PPM / Response measurements of M12S and MT-4S, and here are the results (original results also shown again for completeness; new data in bold):
  • Sanwa MX-V: 63Hz / 15.9ms
  • Sanwa MT-4 (Normal Mode): 90Hz / 11.1ms
  • Sanwa MT-4 (SHR Mode): 192Hz / 5.2ms
  • Sanwa MT-4 (SSR Mode - Narrow Pulse): 191Hz / 5.2ms
  • Sanwa MT-4S (FH4T Normal Mode): 93Hz / 10.8ms
  • Sanwa MT-4S (FH4T SHR Mode): 383Hz / 2.6ms
  • Sanwa MT-4S (FH4T SSR Mode - Narrow Pulse): 383Hz / 2.6ms
  • Sanwa MT-4S (FH3 Normal Mode): 110Hz / 9.1ms
  • Sanwa MT-4S (FH3 SHR Mode): 332Hz / 3.0ms
  • Sanwa MT-S (FH4T Normal Mode): 95Hz / 10.5ms
  • Sanwa MT-S (FH4T SHR Mode): 384Hz / 2.6ms
  • Sanwa MT-S (FH4T SSR Mode - Narrow Pulse): 191Hz / 5.2ms
  • Sanwa MT-S (FH3 Normal Mode): 83Hz / 12.0ms
  • Sanwa MT-S (FH3 SHR Mode): 332Hz / 3.0ms
  • Sanwa MT-44 (FH4T Normal Mode): 95Hz / 10.5ms
  • Sanwa MT-44 (FH4T SHR Mode): 383Hz / 2.6ms
  • Sanwa MT-44 (FH4T SSR Mode - Narrow Pulse): 383Hz / 2.6ms
  • Sanwa MT-44 (FH3 Normal Mode): 83Hz / 12.0ms
  • Sanwa MT-44 (FH3 SHR Mode): 332Hz / 3.0ms
  • Sanwa M12S (FH4T Normal Mode): 95Hz / 10.5ms
  • Sanwa M12S (FH4T SHR Mode): 383Hz / 2.6ms
  • Sanwa M12S (FH4T SSR Mode - Narrow Pulse): 383Hz / 2.6ms
  • Sanwa M12S (FH3 Normal Mode): 110Hz / 9.1ms
  • Sanwa M12S (FH3 SHR Mode): 332Hz / 3.0ms

This data shows that the MT-4S is identical to the M12S in terms of latency. This is interesting, because the MT-4S was billed as being 'As fast as the M12', and the M12S as being '20% faster than the M12'. Perhaps there is some un-known latency in the processing before transmission, but I'd be surprised...

Also interesting is that the MT-44 is slower in FH3 Normal mode, not that this is particularly important; I'm not sure why you'd use that mode.

One other thing I noticed when playing with the MT-4S and M12S, was that the spring tension, for the steering in particular, was much lighter on the M12S and MT-44 than the MT-4S and MT-S. Of course this is adjustable on all of these radios, but it seems that if you attempt to make the MT-S and MT-4S as low tension as the M12S and MT-44, they won't center correctly; something is different about the action of the MT-44 and M12S, and in a good way.
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Old 12-31-2016, 11:33 PM
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Funny thing I just noticed, is that the day is currently indicated as SUT rather than SAT!
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Old 12-31-2016, 11:42 PM
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Originally Posted by sbd
Just for speed reference this is what I measured 2 year ago:
@sbd, I wanted to give a quick thanks to you... the measurements that you and @BillDeLong took a year or so ago was what inspired me to do my own research, and get the SkyRC ProgBox.

I was always a bit confused about the 24ms data in your spreadsheet. It seems from the pulse frequency that the 24ms setting is much lower, even lower than the narrow pulse 3ms setting. Did you notice this in use, that the 24ms setting feels lower latency than the 6ms setting?

To be honest, a response time of 2.3ms also seems too short, because the pulse width at its widest could be greater than this... What happens if you set the trim and try to get a pulse of larger than 2300us?
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Old 01-01-2017, 12:03 AM
  #85  
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Originally Posted by Nezil
I have some updates as promised...

Unfortunately I wasn't able to race on Friday, but I did get about 2 hours of solid practice in, which is probably longer run-time than if I'd been racing, so it's still an interesting touch point.

The battery (3 x 750mAh AAA Panasonic Eneloops) voltage dropped from 4.2v to 3.8v during the course of the run, but didn't go below that. 3.8v is actually still higher than the nominal 3 x 1.2v of 3 x NiMH, and if I remember correctly, the discharge curve of NiMH should be reasonably flat. The battery gauge on the MT-44 currently indicates about 75% remaining. If that is true, then you'd get about 8 hours out of AAAs, and probably double that out of the optional LiPo. It's too early to say if that's accurate or not, and I'll try and post back as I learn more.

I also got a chance to take some additional PPM / Response measurements of M12S and MT-4S, and here are the results (original results also shown again for completeness; new data in bold):
  • Sanwa MX-V: 63Hz / 15.9ms
  • Sanwa MT-4 (Normal Mode): 90Hz / 11.1ms
  • Sanwa MT-4 (SHR Mode): 192Hz / 5.2ms
  • Sanwa MT-4 (SSR Mode - Narrow Pulse): 191Hz / 5.2ms
  • Sanwa MT-4S (FH4T Normal Mode): 93Hz / 10.8ms
  • Sanwa MT-4S (FH4T SHR Mode): 383Hz / 2.6ms
  • Sanwa MT-4S (FH4T SSR Mode - Narrow Pulse): 383Hz / 2.6ms
  • Sanwa MT-4S (FH3 Normal Mode): 110Hz / 9.1ms
  • Sanwa MT-4S (FH3 SHR Mode): 332Hz / 3.0ms
  • Sanwa MT-S (FH4T Normal Mode): 95Hz / 10.5ms
  • Sanwa MT-S (FH4T SHR Mode): 384Hz / 2.6ms
  • Sanwa MT-S (FH4T SSR Mode - Narrow Pulse): 191Hz / 5.2ms
  • Sanwa MT-S (FH3 Normal Mode): 83Hz / 12.0ms
  • Sanwa MT-S (FH3 SHR Mode): 332Hz / 3.0ms
  • Sanwa MT-44 (FH4T Normal Mode): 95Hz / 10.5ms
  • Sanwa MT-44 (FH4T SHR Mode): 383Hz / 2.6ms
  • Sanwa MT-44 (FH4T SSR Mode - Narrow Pulse): 383Hz / 2.6ms
  • Sanwa MT-44 (FH3 Normal Mode): 83Hz / 12.0ms
  • Sanwa MT-44 (FH3 SHR Mode): 332Hz / 3.0ms
  • Sanwa M12S (FH4T Normal Mode): 95Hz / 10.5ms
  • Sanwa M12S (FH4T SHR Mode): 383Hz / 2.6ms
  • Sanwa M12S (FH4T SSR Mode - Narrow Pulse): 383Hz / 2.6ms
  • Sanwa M12S (FH3 Normal Mode): 110Hz / 9.1ms
  • Sanwa M12S (FH3 SHR Mode): 332Hz / 3.0ms

This data shows that the MT-4S is identical to the M12S in terms of latency. This is interesting, because the MT-4S was billed as being 'As fast as the M12', and the M12S as being '20% faster than the M12'. Perhaps there is some un-known latency in the processing before transmission, but I'd be surprised...

Also interesting is that the MT-44 is slower in FH3 Normal mode, not that this is particularly important; I'm not sure why you'd use that mode.

One other thing I noticed when playing with the MT-4S and M12S, was that the spring tension, for the steering in particular, was much lighter on the M12S and MT-44 than the MT-4S and MT-S. Of course this is adjustable on all of these radios, but it seems that if you attempt to make the MT-S and MT-4S as low tension as the M12S and MT-44, they won't center correctly; something is different about the action of the MT-44 and M12S, and in a good way.
good info. i hope to be able to test mine for the first time at norcal on wednesday night.
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Old 01-01-2017, 12:10 AM
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Originally Posted by RC*PHREAK
good info. i hope to be able to test mine for the first time at norcal on wednesday night.
What's weird is that there are several people on here from the bay area, and I assume we're all NorCal regulars, but because of the usernames on here, I have no idea who any of you are. My 'real' name is Neil, and I have a Gun-metal, Green and White B6.

I usually race 17.5 Sportsman on Wednesdays, and occasionally Fridays, but won't be there this week because I'll be in Vegas for CES. Going to try and get some time over at 702 raceway if I can. I'm really interested to see what driving on carpet is like.
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Old 01-01-2017, 01:28 PM
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i'm tim and i usually run expert 17.5, 40+ 17.5 or both. sometimes 2wd SC. i usually race friday's, but i'm on vacation this week so i'm going to shoot for both wednesday and friday.

carpet is awesome. when the track in livermore was carpet for a little bit i got a chance to run there a few times and it was so much fun. find a good setup and forget about it. consistency is the best aspect of carpet imo.
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Old 01-01-2017, 02:28 PM
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I just ordered an MT-44 from Amain to replace my m11x.
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Old 01-01-2017, 02:56 PM
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Originally Posted by Nezil
@sbd, I wanted to give a quick thanks to you... the measurements that you and @BillDeLong took a year or so ago was what inspired me to do my own research, and get the SkyRC ProgBox.

I was always a bit confused about the 24ms data in your spreadsheet. It seems from the pulse frequency that the 24ms setting is much lower, even lower than the narrow pulse 3ms setting. Did you notice this in use, that the 24ms setting feels lower latency than the 6ms setting?

To be honest, a response time of 2.3ms also seems too short, because the pulse width at its widest could be greater than this... What happens if you set the trim and try to get a pulse of larger than 2300us?
Welcome, good to know a thing I came with is useful. Great job of yours with the Sanwa data.
Yes, the 24 ms is strange. I have confirmed, with a Trackstar prog card reading of 442 Hz. However when I visually compare the speed at 24 ms and 3 ms, the 24 ms speed is visibly slower.

Last edited by sbd; 01-01-2017 at 03:16 PM.
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Old 01-01-2017, 03:13 PM
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Originally Posted by RC*PHREAK
so far i've only bound one of my rides to the MT-44. i used the quick setup feature. one of the options that isn't mentioned in the manual that i could see is the esc type. it asked something like "high class esc" or "low class esc". i wonder if that was a change in the firmware.
I noticed the same thing and have been trying to find an answer.
What carrying case fits the receiver best? MT4-S or the or the M12-S?
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