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Old 08-18-2009, 01:19 PM   #6256
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Capt. : That's all I can ask for! Thanks. Please do let me know. If we have a calibration issue with a certain radio we need to track it down and correct it.
Will do Randy, and thanks.

And just in case I didn't mention it before, when the car is on the track and I lose the turbo, it doesn't "slowly get weaker". For example, lap 5 might feel awesome with a nice bust of turbo speed going down the back straight.. then lap 6, no turbo at all... zero. (at least preceived) Flat acceleration from front to back with the trigger all the way back.
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Old 08-18-2009, 01:30 PM   #6257
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This is my setup as it was in 198 and now in 200.

With the 198 setup, it was competitive with the SPX, but with the high boost, it lacked the punch in the infield and after 5 min it came off the track at around 170 - or closer to 180 when running 5.1 FDR instead of 5.29! The same temperature was recorded if I run longer, say 10 to 12 min... Our straight is around 160ft and long 'chicane' also taken at full speed is approx 160ft.

Then switched to 200 software and things improved A LOT. I stayed with the same 5.29 FDR and reduced boost to 15 from 30 and put turbo to MAX. Infield performance was MUCH improved and i could very easily keep up with the SPXs, both in the infield and the straight... but I'm still rookie so I make a lot of mistakes and lose pace shortly afterwards. Temperature after 5min or more...140ish

I think I could benefit if the turbo came in sooner. In essence you can control the turbo by staying slightly off 100% throttle in the field - granted it might not be the easiest thing to do... Anyway... now i'll test with i higher FDR (5.49) and see how this helps turbo to 'spool' quicker

i also noticed that the turbo kick softens, but only when the battery voltage starts to deplete... For a 5 min race, I do not think it's an issue...

Overall thumbs up
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Old 08-18-2009, 01:41 PM   #6258
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This is my setup as it was in 198 and now in 200.

With the 198 setup, it was competitive with the SPX, but with the high boost, it lacked the punch in the infield and after 5 min it came off the track at around 170 - or closer to 180 when running 5.1 FDR instead of 5.29! The same temperature was recorded if I run longer, say 10 to 12 min... Our straight is around 160ft and long 'chicane' also taken at full speed is approx 160ft.

Then switched to 200 software and things improved A LOT. I stayed with the same 5.29 FDR and reduced boost to 15 from 30 and put turbo to MAX. Infield performance was MUCH improved and i could very easily keep up with the SPXs, both in the infield and the straight... but I'm still rookie so I make a lot of mistakes and lose pace shortly afterwards. Temperature after 5min or more...140ish

I think I could benefit if the turbo came in sooner. In essence you can control the turbo by staying slightly off 100% throttle in the field - granted it might not be the easiest thing to do... Anyway... now i'll test with i higher FDR (5.49) and see how this helps turbo to 'spool' quicker

i also noticed that the turbo kick softens, but only when the battery voltage starts to deplete... For a 5 min race, I do not think it's an issue...

Overall thumbs up
With a higher FDR the Turbo comes in earlier.
Set your boost to 10 and it will also come in sooner.
You don't have to use a higher FDR when you lower your Boost.
You also get some more power in the infield with the Speedpassion motor.
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Old 08-18-2009, 01:49 PM   #6259
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capt, going fast see local thread
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Old 08-18-2009, 01:57 PM   #6260
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With a higher FDR the Turbo comes in earlier.
Set your boost to 10 and it will also come in sooner.
You don't have to use a higher FDR when you lower your Boost.
You also get some more power in the infield with the Speedpassion motor.
thanks mikky... this it the kind of feedback i was looking for!

With a lower boost, I'd expect a bigger kick from the turbo! It's quite nice to see it, the effect is exactly like a 2nd gear shift

anyway i'll try both lower boost and higher fdr.... not sure if I'd prefer a less aggressive change when the turbo kicks in...

thanks once again...

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Old 08-18-2009, 02:04 PM   #6261
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Wouldn't a properly configured setup with Motor Timing, Boost, and Turbo be imperceptible?

Seems to me that if you can visually see the Turbo kick in, than you will have already lost some acceleration, or kinetic energy from the motor already being at max rpm's under the given motor timing and boost? If that happens, the motor and ESC will have to work harder and draw more current to re-accelerate, compared to one continuous imperceptible acceleration?
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Old 08-18-2009, 02:13 PM   #6262
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Old 08-18-2009, 02:14 PM   #6263
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Wouldn't a properly configured setup with Motor Timing, Boost, and Turbo be imperceptible?

Seems to me that if you can visually see the Turbo kick in, than you will have already lost some acceleration, or kinetic energy from the motor already being at max rpm's under the given motor timing and boost? If that happens, the motor and ESC will have to work harder and draw more current to re-accelerate, compared to one continuous imperceptible acceleration?
The turbo actually starts to ramp up pretty quickly (only .5 seconds). and gradually gets faster and faster. But watching the car down the straight... it doesn't APPEAR to ramp up, it looks like it shifts gears.
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Old 08-18-2009, 02:17 PM   #6264
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Originally Posted by kn7671 View Post
Wouldn't a properly configured setup with Motor Timing, Boost, and Turbo be imperceptible?

Seems to me that if you can visually see the Turbo kick in, than you will have already lost some acceleration, or kinetic energy from the motor already being at max rpm's under the given motor timing and boost? If that happens, the motor and ESC will have to work harder and draw more current to re-accelerate, compared to one continuous imperceptible acceleration?
You don't see a "kick" if you will, the acceleration feels continuous. It's more like once you hit full throttle your car keeps accelerating as opposed to being topped out. So there's no re-accelerating. You actually hear the motor start to wind up...I think that is the kick people refer to.

If I think of it...I'll try to take a video of the turbo "kicking" in.
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Old 08-18-2009, 02:17 PM   #6265
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Quote:
Originally Posted by kn7671 View Post
Wouldn't a properly configured setup with Motor Timing, Boost, and Turbo be imperceptible?

Seems to me that if you can visually see the Turbo kick in, than you will have already lost some acceleration, or kinetic energy from the motor already being at max rpm's under the given motor timing and boost? If that happens, the motor and ESC will have to work harder and draw more current to re-accelerate, compared to one continuous imperceptible acceleration?
I want the tires to chirp!

Just kidding. I agree with you 100%. It hits top end, then ramps up a little more until you let it fall away. I can hear it more than I see it on the track so far.
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Old 08-18-2009, 02:25 PM   #6266
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Wouldn't a properly configured setup with Motor Timing, Boost, and Turbo be imperceptible?

Seems to me that if you can visually see the Turbo kick in, than you will have already lost some acceleration, or kinetic energy from the motor already being at max rpm's under the given motor timing and boost? If that happens, the motor and ESC will have to work harder and draw more current to re-accelerate, compared to one continuous imperceptible acceleration?
this is what i had in mind... with the my current setup, when the turbo comes on, you can very easily see it visually...

i'll test with lower boost and then higher fdr and will recompare... i tend to agree that a smoother transition will result in less loss.... much like a close ratio gearbox, i believe

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Old 08-18-2009, 02:26 PM   #6267
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I want the tires to chirp!

Just kidding. I agree with you 100%. It hits top end, then ramps up a little more until you let it fall away. I can hear it more than I see it on the track so far.
Right - this is what my cars do, you just keep hearing it accelerate towards the end of the straight, but on the infield I am on and off the throttle partially enough to keep it from coming on.

So I don't know guys, if you can suddenly see a change in the car, I think it is geared or timed wrong. I will try 2-3 less teeth on the pinion this weekend and up my Turbo to see how it works. I want the Turbo already on before the first 1/4 of the back straight, not half way or more down it.
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Old 08-18-2009, 02:27 PM   #6268
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You don't see a "kick" .
I certainly do. Off the ground, the tires spin and ramp up in what seems like a linear fashion to the point it seems like they are going to spin off. ON the ground, the car seems to "snap" to a second speed.
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Old 08-18-2009, 02:48 PM   #6269
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Kn7671 is on to it!

That is exactly what you should be looking for. Not so much a "shift" in speed rather a long hard continuous pull...

That is when the will be "deceptively" fast as you can't see the shift rather it just keeps on going....like the little pink bunny!
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Old 08-18-2009, 03:09 PM   #6270
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Just so I got this right cuz I'm a little dense sometimes:

Gear down to maximize the infield rip and infield top speed. The turbo is then used to compensate for the what would be a normal loss of top end due to gearing down. The bonus is that it just keeps going like the bunny.
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