UL-1 Eagle Tree data with Grimracer L40x57 3 blade prop

[detox]

I do not think so.

[Brushless55]

Have you tried the S220 yet?

[LuckyDuc]

Not yet. The L42x66 and Prather S220 just arrived yesterday. I'm almost done B/S the L42x66. Then I will start filing on the S220.

[detox]

LuckyDuc, New batteries will make your UL-1 haul Ace. The Maxamps 2s 30c 5250 packs would be quicker than your older 4s packs.

http://maxamps.com/categories.php?cat=8

...

[jingalls007]

I have these packs and my boat hauls ass on them. I don't have a gps (in the bottom of the lake) but it looks quite a bit faster then most UL-1 videos I see on youtube with 25c lipos. It could be because video makes things look smaller and slower?? Duc, if you can swing a few of these packs you'll be very happy and we'll get to see the difference with your nifty eagle tree data...thing.

[Brushless55]

I'm only getting 40.4mph with my 5000mah 12c spc packs

[jingalls007]

I'm only getting 40.4mph with my 5000mah 12c spc packs

12c?? it's highly suggested to run 20c or better in the UL-1. your in Colorado right? hit me up if your ever down around Wash Park, we can meet up with Jesse J and Camel and runnnnnn the boats.

[LuckyDuc]

LuckyDuc, New batteries will make your UL-1 haul Ace. The Maxamps 2s 30c 5250 packs would be quicker than your older 4s packs.

http://maxamps.com/categories.php?cat=8

...

I'll have to give those packs a try. I just hate buying lipo packs that I can only use in one vehicle.

[jingalls007]

I'll have to give those packs a try. I just hate buying lipo packs that I can only use in one vehicle.

Maxamps also make a 6500mAh pack in the 30c. I have the 5250 30c's and love them. I get 10 minutes of full throttle run time and still have about 7.5 volts left on the pack when i get home. I will try to get a video later today (it's snowing right now but weather changes quick in Colorado as you know) so you can see the difference between the 25c and 30c packs.

http://www.maxamps.com/products.php?cat=46

[detox]

**** As a disclaimer I should mention that I'm using an external 6v ParkBEC to take the step down work off the stock ESC.

What was the purpose of doing this? Do you think this protects your ESC from popping a capacitor?

[LuckyDuc]

What was the purpose of doing this? Do you think this protects your ESC from popping a capacitor?

Most of the built in BECs that you find in ESCs are linear. Linear BECs are not as efficient at stepping down the voltage for the receiver as switching mode BECs. As a result, many ESCs tend to build up excess heat and fail when used with 4S or higher voltage packs. I learned my lesson a few years ago with EDF jets. I now use external switching mode BECs in all of my RC gear that utilizes 4S or higher packs. I haven’t lost an ESC due to BEC failure since.
Castle Creation makes one, as do other companies. I prefer Dimension Engineering’s ParkBEC. Link

External BECs are cheap insurance

[Brushless55]

Just got my bec in the mail today and will be putting it on my UL-1 just in case...

[detox]

Most of the built in BECs that you find in ESCs are linear. Linear BECs are not as efficient at stepping down the voltage for the receiver as switching mode BECs. As a result, many ESCs tend to build up excess heat and fail when used with 4S or higher voltage packs. I learned my lesson a few years ago with EDF jets. I now use external switching mode BECs in all of my RC gear that utilizes 4S or higher packs. I haven’t lost an ESC due to BEC failure since.
Castle Creation makes one, as do other companies. I prefer Dimension Engineering’s ParkBEC. Link

External BECs are cheap insurance

Thanks for the explanation.

[Drag Boat Bob]

LuckyDuc,

Does the ESC still provide input voltage to the BEC or are you using and external source?

[Drag Boat Bob]

I found the installation file and figured it out...