Kbb34 repower, unbelievable!

[kfxguy]

Most of you guys know that I had a mgm Esc I exploded. Well something happened with the lehner at the same time that caused the kv to change to like 4400kv according to my tester. I already had a sf300 lite to go in it. Then I had a 1527 1500kv as a spare. Last time I ran that 1527 on 6s with an m447 it went 51. Then I did up an abc prop to try out and I was thinking maybe 58-60 mph. When I brought the boat in I was amazed. This is what she looks like with the neu and sf Esc.





6s 1500kv 48mm 1.5 pitch prop.



7s



8s

[kfxguy]

Here's the video. I didn't get the 84.7 on on video. I made so many tuning passes my son got tired of videoing.

[kfxguy]

Ps... I put unbelievable because the first time I ran this motor it only went 51mph with the same prop that the lehner went 69mph on the same amount of cells.

[srislash]

Nice, and no BOOM...

[Brushless55]

8S

Dude, you are a mad man !

[kfxguy]

Nice, and no BOOM...

I know! I made I think 3 or 4 8s passes. No flipping. No boom. Motor was a little warm. Maybe 115 degrees. Here's the log. There was some sort of spike when I let off the throttle. Only saw that once. Probably a fluke or something.

[kfxguy]

8S

Dude, you are a mad man !

It's only 1500kv. It was turning 37k rpm. Isn't "saw" rpm over 40k? So technically this is my "sport" setup. The amps weren't over 170 at full throttle. I should have more room to play. Hint....9s will fit in the boat. Lol.

[Brushless55]

It's only 1500kv. It was turning 37k rpm. Isn't "saw" rpm over 40k? So technically this is my "sport" setup. The amps weren't over 170 at full throttle. I should have more room to play. Hint....9s will fit in the boat. Lol.

Your graph shows over 37k.. it shows a ceiling of 37,919 in the program
should be somewhere closer to 43-44k on 8s

[kfxguy]

Your graph shows over 37k.. it shows a ceiling of 37,919 in the program
should be somewhere closer to 43-44k on 8s

The ceiling in the graph is 37,919...that's because that was the max Rpm it recorded. If I go run it again on a different voltage, that ceiling will change again to the max rpm it saw.

[Brushless55]

What I am saying is the top of the log is the ceiling in the program for that run..
if you look at the top you will see it basically crushed it and possibly ran higher that what the screen is showing you
each line goes up 3,381 rpms and tops out at 37,919 in that program on the screen
if you could go up another two lines you would see the next line read 41,300rpms and the next read 44,681rpms and even a third read 48,062
it's not letting you see the actual peak rpms cuz it is crushing the ceiling of the program on that screen shot.. if that makes sense

[kevinpratt823]

What I am saying is the top of the log is the ceiling in the program for that run..
if you look at the top you will see it basically crushed it and possibly ran higher that what the screen is showing you
each line goes up 3,381 rpms and tops out at 37,919 in that program on the screen
if you could go up another two lines you would see the next line read 41,300rpms and the next read 44,681rpms and even a third read 48,062
it's not letting you see the actual peak rpms cuz it is crushing the ceiling of the program on that screen shot.. if that makes sense

I don't think so......anytime the sf loads data with the rpm as the vertical left line, the ceiling changes to the max rpm, which is the purple graph line. The blue line is throttle input, which flattens out at 100%, right where the rpm reaches the top of the graph.....37,919 was his peak rpm(loaded) on that run. Though his unloaded rpm would be over 44,000.

[kfxguy]

I don't think so......anytime the sf loads data with the rpm as the vertical left line, the ceiling changes to the max rpm, which is the purple graph line. The blue line is throttle input, which flattens out at 100%, right where the rpm reaches the top of the graph.....37,919 was his peak rpm(loaded) on that run. Though his unloaded rpm would be over 44,000.

Exactly what I was trying to say. If anyone know how to make the graph go higher, let me know. Thx

[kevinpratt823]

Exactly what I was trying to say. If anyone know how to make the graph go higher, let me know. Thx

That's easy, run 9s lol.

[kfxguy]

That's easy, run 9s lol.

That may be in the cards. I've got to get it tweaked on 8s first. I've always felt like just throwing more voltage at it without lining it out first on the voltage I have, is not the best thing to do lol.

[kevinpratt823]

I agree, but didn't you already just go from 6, to 7, to 8s in one day?