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Reedy Sonic

Old 09-13-2012, 09:03 AM
  #451  
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My fan is the one that is used in the Tekin RX8 esc. Is that good enough or is there a better one?
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Old 09-13-2012, 09:18 AM
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Originally Posted by schaubro View Post
My fan is the one that is used in the Tekin RX8 esc. Is that good enough or is there a better one?
Side Piece Racing Seis fan.
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Old 09-18-2012, 06:56 AM
  #453  
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Is this motor like most 17.5s? Turn the timing all the way and gear to temp? If so, what should temp be after 6 minutes in rubber tire sedan?
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Old 09-18-2012, 07:12 AM
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Originally Posted by B00t13g View Post
Is this motor like most 17.5s? Turn the timing all the way and gear to temp? If so, what should temp be after 6 minutes in rubber tire sedan?
Good question. I've had little luck with my Sonic. Very smooth but running timing the temps climb very fast 180+ and that is running a 4.0 FDR in blinky. For comparison my Duo 1 running in the middle timing position normally comes off around 157 and is considerably stronger all the way through. Other guys at the track are pulling a taller gear with the Sonic with more timing and coming off cooler so not sure if something is wrong with mine or I'm just approaching it completely wrong. It sure is smooth but is not near as fast as my old Duo.
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Old 09-18-2012, 10:17 AM
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Originally Posted by Chaz955i View Post
Good question. I've had little luck with my Sonic. Very smooth but running timing the temps climb very fast 180+ and that is running a 4.0 FDR in blinky. For comparison my Duo 1 running in the middle timing position normally comes off around 157 and is considerably stronger all the way through. Other guys at the track are pulling a taller gear with the Sonic with more timing and coming off cooler so not sure if something is wrong with mine or I'm just approaching it completely wrong. It sure is smooth but is not near as fast as my old Duo.
I have the same issue with my motors in general. I flat out get motors hotter than most.
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Old 09-18-2012, 11:52 AM
  #456  
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Originally Posted by Chaz955i View Post
Good question. I've had little luck with my Sonic. Very smooth but running timing the temps climb very fast 180+ and that is running a 4.0 FDR in blinky. For comparison my Duo 1 running in the middle timing position normally comes off around 157 and is considerably stronger all the way through. Other guys at the track are pulling a taller gear with the Sonic with more timing and coming off cooler so not sure if something is wrong with mine or I'm just approaching it completely wrong. It sure is smooth but is not near as fast as my old Duo.
On the same track as Chaz955i, with my Sonic 17.5, I've been running around 145 - 165 degrees with an FDR of 3.8, depending on layout. I used to run with the timing advanced all the way, but backed off a bit it runs cooler with no loss of speed. I do run a fan blowing directly on the motor.
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Old 09-18-2012, 11:55 AM
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Originally Posted by CarbonJoe View Post
On the same track as Chaz955i, with my Sonic 17.5, I've been running around 145 - 165 degrees with an FDR of 3.8, depending on layout. I used to run with the timing advanced all the way, but backed off a bit it runs cooler with no loss of speed. I do run a fan blowing directly on the motor.
What timing are you at? I think im going to start at a 4.0
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Old 09-18-2012, 02:05 PM
  #458  
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Originally Posted by B00t13g View Post
What timing are you at? I think im going to start at a 4.0
On 17.5t motors I would start with the motor timing at 40. Most likely you can run more. If you max timing immeadiately you make the gear window very narrow. I prefer to start with less timing find what gear works for you then carefully start adding timing. Keep in mind as you increase timing you will have to gear down, smaller pinion.
Motor should always stay below 200. Optimum temp range seems to be 170-175. Also I think you must run a fan on the motor.
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Old 09-18-2012, 02:19 PM
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I find anything over 38 is no faster, just runs hotter and falls off more. A little less timing with a little more gear is better. This is on a 13.5 though so maybe 17.5s are different.
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Old 09-18-2012, 04:55 PM
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Originally Posted by CarbonJoe View Post
On the same track as Chaz955i, with my Sonic 17.5, I've been running around 145 - 165 degrees with an FDR of 3.8, depending on layout. I used to run with the timing advanced all the way, but backed off a bit it runs cooler with no loss of speed. I do run a fan blowing directly on the motor.
No doubt Joe. I thought it could be the result of binding somewhere in the drivetrain but the other motors run cool with equivalent FDR. Weird. Your car is certainly not hurting for motor either. Makes me think the one I have is just on the weak side. When I ran Seaball's car it was a rocket, which is one of the reasons I went with the Sonic. The 13.5 I'm running in WGT seems to be much closer performing to the competition, at least at the local level.
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Old 09-18-2012, 05:44 PM
  #461  
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Originally Posted by Sean Cochran View Post
On 17.5t motors I would start with the motor timing at 40. Most likely you can run more. If you max timing immeadiately you make the gear window very narrow. I prefer to start with less timing find what gear works for you then carefully start adding timing. Keep in mind as you increase timing you will have to gear down, smaller pinion.
Motor should always stay below 200. Optimum temp range seems to be 170-175. Also I think you must run a fan on the motor.
+1
That's exactly what I do at the track.
I always run around 160-165 F on the motor.
Usually drop 2-3 teeth on gearing then add more timing.
Also, run zero degrees on motor timing.
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Old 09-18-2012, 05:48 PM
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Originally Posted by Mr RCTech View Post
Also, run zero degrees on motor timing.
Not an option in blinky.
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Old 09-18-2012, 10:15 PM
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Unfortunately my gearing window is even smaller than normal as the tallest I can go is 3.9 as far as I know.
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Old 09-19-2012, 12:22 AM
  #464  
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How do the timing marks work on the reedy(how many degrees is each tick), and what is base timing at the middle or 0 position? Thank you!
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Old 09-19-2012, 12:29 AM
  #465  
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Not sure if it's been discussed before but does anyone have any experience with track debris getting into the motor via those cooling holes?

That's my one big concern about getting a vented can motor.
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