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Old 06-28-2011, 04:46 AM   #5431
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Originally Posted by TeamWTF View Post
I think he meant timing end...ie when the timing would reach its maximum value (Not including turbo)

Its common terminology for the tekin software
I agree that's probably what he means, but just want to be sure so that people don't get the wrong idea.


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Originally Posted by TeamWTF View Post
And boost has a huge effect on RPM's. Thats its job...

Thats why you would gear a non timed 17.5 around 3.5-4.0 and a timed 17.5 at 5.5 or above (Usually) and still have the timed car be much faster
I know, but I mean it in a different way.
(I've changed my original post to try to clarify it more)
My X12 has 3600 rpm/V, with an 2S lipo, Max RPM according to that would be 7.4x3600=26640

I drive 100kmh according to the speed trap on our track
With the 50mm roll-out I drive my pan car, this gives me a rpm of 33000...
Not so much more then what is rated for my motor.
This is what I mean.

You can take the KV ratings as a guideline for max rpm on which your timing should be set, atleast that's my findings for the HW esc.

The HW manual states that with timing, theoretically a stock motor can reach 120.000 rpm, so why is my car then not driving 300kmh?
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Old 06-28-2011, 05:14 AM   #5432
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Originally Posted by M7H View Post
according to your theory, if you put boost to 0 degree, your car would not run?
WHATEVER...




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Originally Posted by M7H View Post
On 0 degrees of timing, the motors KV rating come into account, this is the RPM it can reach without any boost timing added.
Actually, the KV ratings are the number you should look at, to give you an idea about the motors end RPM
I have been running TC boosted 17.5 on a VERY BIG track with this esc for over 12 months so id like to think i know a thing or two about getting speed out of it...

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Originally Posted by M7H View Post
under load, boost timing doesn't affect the end RPM much... (maybe +20%)
I think Your 20% is waaaaaay out of the ball park so id like you to explain more about how you came to this figure. You should also know that when a touring car or 1/12th is going flat out down a straight it technically does not have much load on it at all and thus the reason why turbo is now separated to take advantage of this low load situation...

Quote:
Originally Posted by TeamWTF View Post
And boost has a huge effect on RPM's. Thats its job...

Thats why you would gear a non timed 17.5 around 3.5-4.0 and a timed 17.5 at 5.5 or above (Usually) and still have the timed car be much faster
What he said...
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Old 06-28-2011, 05:39 AM   #5433
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Originally Posted by M7H View Post
I agree that's probably what he means, but just want to be sure so that people don't get the wrong idea.




I know, but I mean it in a different way.
(I've changed my original post to try to clarify it more)
My X12 has 3600 rpm/V, with an 2S lipo, Max RPM according to that would be 7.4x3600=26640

I drive 100kmh according to the speed trap on our track
With the 50mm roll-out I drive my pan car, this gives me a rpm of 33000...
Not so much more then what is rated for my motor.
This is what I mean.

You can take the KV ratings as a guideline for max rpm on which your timing should be set, atleast that's my findings for the HW esc.

The HW manual states that with timing, theoretically a stock motor can reach 120.000 rpm, so why is my car then not driving 300kmh?
Martin, i don't know exactly how to calculate the revs/min from my rollout and topspeed. My motor has 3.300 kv. I have 36mm rollout. Our speed is not so much different, maybe a few km/ slower say 95 or so. What are the revs of my motor at top speed?
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Old 06-28-2011, 05:40 AM   #5434
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I think Your 20% is waaaaaay out of the ball park so id like you to explain more about how you came to this figure.
See the post above yours.....
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Old 06-28-2011, 05:48 AM   #5435
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Originally Posted by 2wdrive View Post
Martin, i don't know exactly how to calculate the revs/min from my rollout and topspeed. My motor has 3.300 kv. I have 36mm rollout. Our speed is not so much different, maybe a few km/ slower say 95 or so. What are the revs of my motor at top speed?
44000 Alex is your rpm then.

Indeed 20% is underrated by me , but I hope people get my idea....
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Old 06-28-2011, 05:54 AM   #5436
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I'm not actually running in this class/event, but I'm interested in understanding the settings and the approach to get them right.
Phil.
YGPM I dont want to fill the thread with my un educated drivel
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Old 06-28-2011, 06:01 AM   #5437
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Wow almost double the rpm and my motor is between 55-65 degrees C after 7 minutes

I love my xerun


BTW I found out this weekend that running the same rollout as above without turbo and only 10 boost makes the speed like a mabuchi silvercan haha.
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Old 06-28-2011, 06:06 AM   #5438
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Quote:
Originally Posted by M7H View Post
I agree that's probably what he means, but just want to be sure so that people don't get the wrong idea.




I know, but I mean it in a different way.
(I've changed my original post to try to clarify it more)
My X12 has 3600 rpm/V, with an 2S lipo, Max RPM according to that would be 7.4x3600=26640

I drive 100kmh according to the speed trap on our track
With the 50mm roll-out I drive my pan car, this gives me a rpm of 33000...
Not so much more then what is rated for my motor.
This is what I mean.

You can take the KV ratings as a guideline for max rpm on which your timing should be set, atleast that's my findings for the HW esc.

The HW manual states that with timing, theoretically a stock motor can reach 120.000 rpm, so why is my car then not driving 300kmh?

The reason your car can't reach 300kmh is because you never got to 100kmh in the first place.
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Old 06-28-2011, 06:14 AM   #5439
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you never got to 100kmh in the first place.


Yes I do.
106 I even reached...

Our track has a speed trap build in connected to mylaps.
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Old 06-28-2011, 06:14 AM   #5440
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^^^ not sure how to read your post but his speed with his 10.5t x12 has been clocked by a speedtrap at 105+km/h. It is no speedruns.... it is on a rc track where you need to gear for the infield and for a 7 minutes race.
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Old 06-28-2011, 06:56 AM   #5441
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wow i mean no hard, many of you fear new rpm log as replacements no, it will not as it would be option, if you dont like it you dont have to use it.
and i dissagree if you think hobbywing cant do better than gm or novak, on its rpm log, anyone say cant, michael say can...
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Old 06-28-2011, 07:23 AM   #5442
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anyone say cant, michael say can...
Yes, but with "can" he means:
Yes, can make ESC for Speedpassion.
Yes, can make ESC for Orion.
Yes, can make ESC for..... (probably not CC... )
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Old 06-28-2011, 08:11 AM   #5443
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dont want to argue just allow more to features that was possible, anyway hw already implement its firmware with rpm log, but still unavaliable for user to read, yet. according to many programmer , current rpm is always recorded during run, to detect rpm, to start the timing advanced,
its michael who tell me about the rpm log , ..
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Old 06-28-2011, 09:02 AM   #5444
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Originally Posted by 2wdrive View Post
^^^ not sure how to read your post but his speed with his 10.5t x12 has been clocked by a speedtrap at 105+km/h. It is no speedruns.... it is on a rc track where you need to gear for the infield and for a 7 minutes race.
going to have to agree with these guys i run same motor on 2s in my 1/10 pan, with 46mm roll out im hitting around 90 klmh,it would go faster but im out of track by then
2s with boost/turbo in a pan car is unbelievably fast.
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Old 06-28-2011, 10:10 AM   #5445
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Originally Posted by irgo View Post
dont want to argue just allow more to features that was possible, anyway hw already implement its firmware with rpm log, but still unavaliable for user to read, yet. according to many programmer , current rpm is always recorded during run, to detect rpm, to start the timing advanced,
its michael who tell me about the rpm log , ..
Again, your not getting it.
The software have to read the rpm, however that won't be as a logging function (as in storing the value), and most likely a "live" feed.
Why?
There isn't the space on the already maxed out memory circuit, in which case you will have to take a feature or two off to allow for storage of that data... and as previously mentioned if it's a single value stating the highest rpm, then that is about as much use as a chocolate teapot. More meaningful data means more storage space, and that does mean reduced functionality. End of.

As Angelo has mentioned before, yes it can be done, but is it worth it? Simple answer, No.
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