Speed Calculator

[BrianG]

What category is that (MT, 2.2", tr/buggy, off/onroad, etc)? Sorry, I'm not as up on the tire brands/models as I am in electrical stuff.

Thanks though! I have a few measurements I can take of what I have and then average out the various measurements to get a decent estimate.

Ohhh ooops lol, forgot that

Those are the 2.2 moabs, for like a stampede rusty kind of truck

Brian,

You should put the NEU 1509 series motors in the calculator

[BrianG]

Added the Neu 1509 series motor data.

Also added some notes at the bottom of the "Lipo Pack Wiring" page for the balancer Y section.

Still have to fix the bug with the picture viewer, but that'll have to wait for now...

I dont see them on there?

There added in the speed calculator under motors? They dont show up

[BrianG]

I just checked and they are in fact there. Look at the bottom of the Neu motor section. All the pages use the same library "database" file, so if whatever shows up in one page will show up in all pages. Try clearing your internet cache if you still can't see them.

I cleared my cache, and it works now

Thanks Brian!

[BrianG]

I was just at my site's web stats page and found something kinda interesting. Below are all the sites that have linked back to the Speed Calc, some of which I've never heard of:

RCGroups
RC-Monster
Traxxas
RCTech
NitroKillers
WattFlyer
RCUniverse
RCDesign
RCThai
brushlessmania.forumpro.fr
HeliFreak
RadioControlZone

I was surprised to see that RCGroups had higher hits than from here. Go figure...

[snellemin]

It's a compliment nonetheless though.

BTW, are you going to add hacker motor specs to your database?

[BrianG]

I was thinking about adding all the motors I could find (Hacker included), but figured I would limit it to just what Mike has listed in his store. I know I don't technically "need" to, but it's a professional courtesy.

[jhautz]

Brian... Where did the KV numbers for the Lehner 19xx series motors come from. The numbers in your calculator dont match the kv numbers on the Lehner website.

Are these possibly unloaded numbers vs the loaded kv numbers that Lehner uses? If so where did you get them?

[neweuser]

I think one is loaded and the other is unloaded, I would assume Brian used loaded kv ratings.

[BrianG]

I don't remember where I found the values, but the "U" and "L" after the motor kv in the drop-down lists says whether the kv listed is loaded or unloaded. I tried to use unloaded wherever possible because the loaded value depends on current draw and that is too variable for my liking.

[lutach]

I think Lehner's spec is somewhat loaded. I think I saw some one in another forum saying this.

[jhautz]

All I know is I was looking up the 1950/7 on the Lehner site and its different than in the speed calc. I thought maybe there was a reason for it, but if not it looks like many of them are incorrect. Just pointing it out so you can update it if its not correct.

I do know that Lehner uses a loaded kv value.... but they dont publish what the load is so who knows what that actually means.

I will say this though. In my own calculations I use the Lehner loaded values and the nominal cell voltages (for example 14.8v for 4s) without any voltage drop and the speeds that are calulated are dang close to the real world speeds I get. When using the unloaded values from other motor you have to account for the voltage drop for the calculated speed numbers to match real world.