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Old 06-05-2014, 04:32 PM   #406
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17.5 Killshot Blinky Class. My motor:


RPM: 10.716@5.0V
Power: 45W@6.1K
Torque: 94.5Nmm
PN: FAN27868T

RESISTANCE:
A: 20.3
B: 20.5
C: 20.4

ROTOR STRENGTH:
Rotor+: 14.45
Rotor-: 14.43

ROTOR SIZE / TYPE
12.5 HT

I was going to use it in my buggy but now I am going to be using this in my touring car; TAMIYA TRF418 with an internal of 1.85. I would like to know where my timing should start at and what gearing should I start at. Going to be running a 96T 64P spur to start with. The track that I race on has a 160' (+) straight. Fairly large size parking lot track sprayed with VHT. I didn't use the motor yet. This will be my first time. Thanks~!
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Old 06-05-2014, 11:20 PM   #407
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Quote:
Originally Posted by JoeyE View Post
17.5 Killshot Blinky Class. My motor:


RPM: 10.716@5.0V
Power: 45W@6.1K
Torque: 94.5Nmm
PN: FAN27868T

RESISTANCE:
A: 20.3
B: 20.5
C: 20.4

ROTOR STRENGTH:
Rotor+: 14.45
Rotor-: 14.43

ROTOR SIZE / TYPE
12.5 HT

I was going to use it in my buggy but now I am going to be using this in my touring car; TAMIYA TRF418 with an internal of 1.85. I would like to know where my timing should start at and what gearing should I start at. Going to be running a 96T 64P spur to start with. The track that I race on has a 160' (+) straight. Fairly large size parking lot track sprayed with VHT. I didn't use the motor yet. This will be my first time. Thanks~!
look a page back and use John Tag's recommendation. Those are nice rotor numbers. Fantom Power!
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Old 06-10-2014, 01:37 PM   #408
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Quote:
Originally Posted by JoeyE View Post
17.5 Killshot Blinky Class. My motor:


RPM: 10.716@5.0V
Power: 45W@6.1K
Torque: 94.5Nmm
PN: FAN27868T

RESISTANCE:
A: 20.3
B: 20.5
C: 20.4

ROTOR STRENGTH:
Rotor+: 14.45
Rotor-: 14.43

ROTOR SIZE / TYPE
12.5 HT

I was going to use it in my buggy but now I am going to be using this in my touring car; TAMIYA TRF418 with an internal of 1.85. I would like to know where my timing should start at and what gearing should I start at. Going to be running a 96T 64P spur to start with. The track that I race on has a 160' (+) straight. Fairly large size parking lot track sprayed with VHT. I didn't use the motor yet. This will be my first time. Thanks~!
What timing did you have in the motor when you dyno'd it?

PS Anyone have a Fantom dyno and want to use it for brushless motors? Then check out The RC Conference at the DECCOSOFTWARE website There are instructions on the Fantom Fun Thread on how to made it happen. Just requires a spare brushless ESC (I'm using a $50 HW Just Stock), a receiver, a receiver battery pack, a 12V power source (car battery), and if you don't have a computer that runs the DOS software, a new set of Windows friendly software ($85) you too can get information like JoeyE's (and much more) on your brushless motor.

Last edited by John Wallace2; 06-10-2014 at 01:54 PM.
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Old 06-10-2014, 01:49 PM   #409
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Originally Posted by b20btec View Post
The KS 17.5 RPM Stator and HT rotor is faster than the KS 17.5 HT/HT, I have both and ran tested them at the track, too much fading off of with the HT/HT. Lap time may appear to be slightly faster with the HT/HT but overall race time the RPM/HT is faster.

John,

It'll be fun to run asphalt on the 20th of July up in Austin, hope to see you there at eos and I'm anticipating a huge USGT turnout! the 12 min A main USGT is something I'm not used to, FDR was key in conserving battery life. Also my experience is somewhat lacking on asphalt so I hope to do well.
I don't recognize your handle, so come on over an introduce yourself. I'll be driving my orange and white Audi R8 in USGT.

PS I have the RPM Stator in my KS motors
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Old 06-10-2014, 03:45 PM   #410
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I ordered two new Fantom Killshot motors yesterday, a 17.5 and 21.5. Both configured the same.

RPM Stator
HT Pro Select Rotor (1435+)
Teflon shims
Aluminum ring

I'll give them a go this weekend at our club race. Going to start with the following settings:

21.5 blinky - 3.2 FDR, 58* timing, 1450 grams
17.5 blinky - 3.6 FDR, 58* timing, 1380 grams
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Old 06-10-2014, 04:44 PM   #411
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Quote:
Originally Posted by John Wallace2 View Post
What timing did you have in the motor when you dyno'd it?

PS Anyone have a Fantom dyno and want to use it for brushless motors? Then check out The RC Conference at the DECCOSOFTWARE website There are instructions on the Fantom Fun Thread on how to made it happen. Just requires a spare brushless ESC (I'm using a $50 HW Just Stock), a receiver, a receiver battery pack, a 12V power source (car battery), and if you don't have a computer that runs the DOS software, a new set of Windows friendly software ($85) you too can get information like JoeyE's (and much more) on your brushless motor.
Which dyno is this and can it still be bought?
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Old 06-10-2014, 05:17 PM   #412
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Which dyno is this and can it still be bought?
It is the FANTOM dyno (used to be affiliated with Fantom motors). Perhaps the new name at least for the software is FACTs Machine II. Its an acceleration dyno that spins a flywheel and measures how long it takes the motor to spin up to speed and at the same time taking all the readings (RPM, AMP draw, torque, watts, etc.) every 0.1 second. Not sure if its sold new anymore, but should be available on ebay or other markets for used equipment.

A key feature of this dyno is that it tells you not only what RPM the motor has, but also how long it takes the motor to get there. Plus you can save dyno runs on your PC and then pull up multiple runs to compare motors and see graphically how the motors compare (a picture is really worth a 1000 words). Lots of other features too. PS I'm not a paid spokes person - just an avid user for at least - well a long time.

Google Fantom Dyno or Facts Machine II and there is a U-tube demonstration of it in use (unfortunately it's with a brushed motor). I did find a U-tube video of it being used on a brushless motor but I haven't been able to find it recently.

Last edited by John Wallace2; 06-10-2014 at 05:58 PM.
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Old 06-10-2014, 05:31 PM   #413
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Quote:
Originally Posted by JoeyE View Post
17.5 Killshot Blinky Class. My motor:


RPM: 10.716@5.0V
Power: 45W@6.1K
Torque: 94.5Nmm
PN: FAN27868T

RESISTANCE:
A: 20.3
B: 20.5
C: 20.4

ROTOR STRENGTH:
Rotor+: 14.45
Rotor-: 14.43

ROTOR SIZE / TYPE
12.5 HT

I was going to use it in my buggy but now I am going to be using this in my touring car; TAMIYA TRF418 with an internal of 1.85. I would like to know where my timing should start at and what gearing should I start at. Going to be running a 96T 64P spur to start with. The track that I race on has a 160' (+) straight. Fairly large size parking lot track sprayed with VHT. I didn't use the motor yet. This will be my first time. Thanks~!
Ran my new Kill Shot 17.5 not the Fantom tuned version. it has the 12.5mm HT rotor, but the RPM stator.
RPM 13,257 @1.6 seconds
Power: 42.62 @7820 rpm
Torque: 823 gm/cm (82.61 Nmm)

As I keep running it, it keeps getting better. You might want to try the 12.5mm RPM rotor. At least, in my 21.5 KS (RPM stator too), the RPM rotor gave me more power, RPM, and surprisingly (at least to me) more torque too.

Where do you race? My track has about the same length straight.

Last edited by John Wallace2; 06-10-2014 at 05:43 PM.
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Old 06-10-2014, 06:07 PM   #414
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Originally Posted by dizope View Post
I ordered two new Fantom Killshot motors yesterday, a 17.5 and 21.5. Both configured the same.

RPM Stator
HT Pro Select Rotor (1435+)
Teflon shims
Aluminum ring

I'll give them a go this weekend at our club race. Going to start with the following settings:

21.5 blinky - 3.2 FDR, 58* timing, 1450 grams
17.5 blinky - 3.6 FDR, 58* timing, 1380 grams
See my post about the 12.5mm RPM rotor in the RPM stator. I assume the grams are the weights of the cars? Hope the track is very open and flowing with long straights with those FDRs (especially the 21.5 FDR). Check the motor temps frequently so you don't over heat the motor. Dieter says no more than 160F and I listen when Jim talks motors.
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Old 06-13-2014, 09:24 AM   #415
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Last night, I discovered that my speed control was damaged when the Killshot burned up 2 weeks ago. It's a Tekin RS Gen2 and is now showing LED's 1-2-6-7, even after a firmware re-flash. Going to put in a spare then send the damaged unit back to Tekin for repair.
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Old 06-13-2014, 09:27 AM   #416
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Originally Posted by John Wallace2 View Post
See my post about the 12.5mm RPM rotor in the RPM stator. I assume the grams are the weights of the cars? Hope the track is very open and flowing with long straights with those FDRs (especially the 21.5 FDR). Check the motor temps frequently so you don't over heat the motor. Dieter says no more than 160F and I listen when Jim talks motors.
Yes, it has long straights and is flowing. Here is a picture of our new layout for the upcoming Summer Series at Hobbytown Fresno.

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Old 06-13-2014, 10:17 AM   #417
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Originally Posted by dizope View Post
Yes, it has long straights and is flowing. Here is a picture of our new layout for the upcoming Summer Series at Hobbytown Fresno.

Your gearing and timing look good for that layout. Make sure you have a great fan on your motor wired to esc for max force in the Fresno heat. Like R1Wurks 8.4v fan or Superior Hobbies 30mm fan.
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Old 06-13-2014, 11:02 AM   #418
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Originally Posted by Josh-n-ya View Post
Your gearing and timing look good for that layout. Make sure you have a great fan on your motor wired to esc for max force in the Fresno heat. Like R1Wurks 8.4v fan or Superior Hobbies 30mm fan.
Thanks Josh. I run the R1Wurks 6v fans. When I keep the timing below 60* temps are low. We are going to nights starting this weekend so the ambient temp will be much better.
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Old 06-13-2014, 11:11 AM   #419
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I liked it...
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Old 06-13-2014, 05:13 PM   #420
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New motors arrived today.

Fantom 17.5
RPM: 11,214 @ 5.0V
Power: 46W@5.8K
Torque: 99.0 Nmm
A: 20.1
B: 20.2
C: 20.2
Rotor+: 1440
Rotor-: 1443

Fantom 21.5
RPM: 9,194 @ 5.0V
Power: 33W@5.8K
Torque: 81.5 Nmm
A: 32.4
B: 32.5
C: 32.4
Rotor+: 1438
Rotor-: 1441
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