Hopefully you haven't updated it yet. I am looking for the Losi MRC ratios right now...

Edit: Copy and pasted from RC-Driver:

Nope, no updates until I get the data requested in this post. I usually post my intent to update and wait a couple/few days for the responses. Seems to limit the late requests...

Ok lets start with the external 2 speed. Not sure if you will add that info (guess the spur sizes could go in the "spur section" under Lst)?

1st - 70/18
2nd - 63/25

Now here are the internal ratios:

LST FOC (this is the losi kit, also the internals of the aftershock are the same as this) - 23/22 primary 30/15 secondary

The Lst and Lst2 have a manually selectable high/low internal gearing, all other lst based trucks have the FOC listed above.

Lst/Lst2 low range internal gearing - 30/15 primary 30/15 secondary
Lst/Lst2 high range internal gearing - 23/22 primary 30/15 secondary

Also your "swap mod" info is correct.

I am sure no one care about the ratios for the mech reverse, so I will not bother looking them up.

Question brian or anybody for that fact.

On a tc5 the fron and rear diffs are 40t the 2 pulleyes atached to the spur are 20t. Would I be correct in assuming the calc inputs should look like

F\r diffs: 2/1
Tranny: 1
add gear ratio: 1
spur: 80 (stock gear)
pinnion: 30 (since thats what I ordered)
Battery: 7.2v 6s 1.2 (since I don't have any 2s lipos yet)
motor: 5400 ( 7.5 novak drift motor)
wheels: 2.5

Not sure what the rest of the optional data is value wise.

So whens the update comin?

That looks right to me. You only have two ratios to deal with. The 2:1, and your pinion/spur ratio. Everything else would be 1:1.

Thanks nitro.

OK, I finally made an update:

- Added several brushed motors.

- Fixed LST/LST2 transmission ratios.

- Added LST/LST2 FOC transmission ratio.

- Added Hot Bodies D8 differential ratio.

- Added a note for the old RCM slipperential stating V1 is discontinued.

- Added Mod 1.5 gear pitch.

- Added Losi MRC transmission ratio.

- Removed battery charger data table, selection box, and all code relating to pre-set battery charger information.

- Added new feature to the Power Calculator page. Once the user enters the data into the form and calculates the power figures, it will also provide a table listing estimated pack capacities to get the same runtime at different voltages.

- Removed the Sky & Technologies link (Quark) since the address is no longer active.

- Removed the Beta alert on the BL Parameter Comparison page.

any chance you could add the novak/speed passion "1/8" motors??

and the basic ROAR leagl ones too...

I'm not sure. Those brushed motors were added by request and I believe they are normal 540 size. Most likely, a larger motor with the same turn count will have a lower kv, but exactly what, I don't know.

:sigh: Lol, I did ask everyone for any other suggestions so that the update would include everything. But every time I post an update, there's always one more thing.

I generally shy away from adding just any motor. This site is not affiliated with RCM, but it IS meant for the members here, so I try to stick with what Mike had. Besides, the motor list is getting VERY long. At some point, it will become very cumbersome. But, if demand is high enough, I guess I could add Novak stuff. Post things like kv, size, etc and I'll add them.

size turn watts KV wight shaft WORTHLESS INFO
<TABLE cellSpacing=1 cellPadding=2 bgColor=#ffffff border=0><TBODY><TR height=16><TD noWrap align=left bgColor=#000000 height=16>HV4.5</TD><TD noWrap align=middle bgColor=#ffff99>3524</TD><TD noWrap align=middle bgColor=#ffff99>Sensored</TD><TD noWrap align=middle bgColor=#ffff99>550</TD><TD noWrap align=middle bgColor=#ffff99>4.5</TD><TD noWrap align=middle bgColor=#ffff99>890</TD><TD noWrap align=middle bgColor=#ffff99>5,000</TD><TD noWrap align=middle bgColor=#ffff99>8.36</TD><TD noWrap align=middle bgColor=#ffff99>5mm</TD><TD noWrap align=middle bgColor=#ffff99>Large</TD><TD noWrap align=middle bgColor=#ffff99>High / High<SUP>S</SUP></TD><TD noWrap align=middle bgColor=#ffff99></TD><TD noWrap align=middle bgColor=#ffff99>Y</TD><TD noWrap align=middle bgColor=#ffff99>Y</TD><TD noWrap align=middle bgColor=#ffff99>Y</TD><TD noWrap align=middle bgColor=#ffff99>Black</TD><TD noWrap align=middle bgColor=#ffff99>Ribbed</TD></TR><TR height=16><TD noWrap align=left bgColor=#000000 height=16>HV5.5</TD><TD noWrap align=middle bgColor=#ffffff>3525</TD><TD noWrap align=middle bgColor=#ffffff>Sensored</TD><TD noWrap align=middle bgColor=#ffffff>550</TD><TD noWrap align=middle bgColor=#ffffff>5.5</TD><TD noWrap align=middle>800</TD><TD noWrap align=middle>3,700</TD><TD noWrap align=middle>8.36</TD><TD noWrap align=middle>5mm</TD><TD noWrap align=middle>Large</TD><TD noWrap align=middle>High / High<SUP>S</SUP></TD><TD noWrap align=middle></TD><TD noWrap align=middle>Y</TD><TD noWrap align=middle>Y</TD><TD noWrap align=middle>Y</TD><TD noWrap align=middle>Black</TD><TD noWrap align=middle>Ribbed</TD></TR><TR height=16><TD noWrap align=left bgColor=#000000 height=16>HV6.5</TD><TD noWrap align=middle bgColor=#ffff99>3526</TD><TD noWrap align=middle bgColor=#ffff99>Sensored</TD><TD noWrap align=middle bgColor=#ffff99>550</TD><TD noWrap align=middle bgColor=#ffff99>6.5</TD><TD noWrap align=middle bgColor=#ffff99>730</TD><TD noWrap align=middle bgColor=#ffff99>3,400</TD><TD noWrap align=middle bgColor=#ffff99>8.36</TD><TD noWrap align=middle bgColor=#ffff99>5mm</TD><TD noWrap align=middle bgColor=#ffff99>Large</TD><TD noWrap align=middle bgColor=#ffff99>High / High<SUP>S</SUP></TD><TD noWrap align=middle bgColor=#ffff99></TD><TD noWrap align=middle bgColor=#ffff99>Y</TD><TD noWrap align=middle bgColor=#ffff99>Y</TD><TD noWrap align=middle bgColor=#ffff99>Y</TD><TD noWrap align=middle bgColor=#ffff99>Black</TD><TD noWrap align=middle bgColor=#ffff99>Ribbed</TD></TR><TR height=16><TD noWrap align=left bgColor=#000000 height=16>HV7.5</TD><TD noWrap align=middle bgColor=#ffffff>3526</TD><TD noWrap align=middle bgColor=#ffffff>Sensored</TD><TD noWrap align=middle bgColor=#ffffff>550</TD><TD noWrap align=middle bgColor=#ffffff>7.5</TD><TD noWrap align=middle>620</TD><TD noWrap align=middle>3,000</TD><TD noWrap align=middle>8.36</TD><TD noWrap align=middle>5mm</TD><TD noWrap align=middle>Large</TD><TD noWrap align=middle>High / High<SUP>S</SUP></TD></TR></TBODY></TABLE>

I don't use Novak anymore but I do use your site Brian and I appreciate every thing you do. :great:

I prefer not to, but they do make nice motors for a mid size conversion:yes:

Thanks, I'll put that in my next update...

No problem! And thanks!

For the price, a 60mm or 70mm Medusa is better IMO.

not when you picked up a working motor/esc combo for $25...:yipi::angel:

Latest update:

- Added Traxxas Revo and Jato shock values.

- Added Novak HV motor data.

- Added the motor style/size to the brushed motors.

- Added Castle Creations Mamba Max 9000kv motor.

- Added Castle Creations Mamba Monster 2650kv and 2200kv motors.

- Added new feature to the Power Calculator page. Once the user enters the data into the form and calculates the power figures, it will also provide a table listing estimated runtime figures when using the same pack capacity at different voltages.

anyone have the mini e-revo and e-slayer tranny and diff ratios?

brian- that runtime feature will be awesome!!

And is it just me or do I not see 2.2 truck gladiators?

You don't. I looked for them the other day for my friends pede. i just used dirt hawgs.

Seems like most of the offroad 2.2 truck tires are 4", which is what the gladiators are. Some people don't know that though.. Maybe Gladiators can be put on the list for the next update? :whistle:

what motor should i pick if i had a traxxas velineon motor. its the one that comes stock with the vxl slash.

Another update:

- Added Ofna Jammin CRT.5 shock values.

- Added 1/16 Revo and Slash (VXL) tranny and diff ratios, and the spurs. Not positive if these ratios are 100% correct, but I believe they are. I looked at the exploded diagrams at the TRX site and counted teeth. Also, I do not know the pitch value for the spurs.

- Re-added code to the "Lithium Battery Chargers" page to auto-fill the various values (max amps, max cell count, power limit, and efficiency). But, no other data was re-tained (such as other features).

keep up the good work BrianG

I'm trying to figure out the amp draw I'll have in my crt .5. I'll have the medusa 3300 (.007ohms) and I want to know the amp draw for 3s and 4s lipo.

I went to the ohms law calculator and plugged in the numbers. I got like 2,000 amps and 30,000 watts. What am I doing wrong? Is ohms supposed to be in micro-ohms or something?

to find amps use this...

http://scriptasylum.com/rc_speed/_power.html


On the speed calculator the output power is dependant on the amperage you put in...

Motors don't have a constant resistance while running.

Sounds like you are using the motor's DC resistance value, which is very low.

For simplicity, let's assume the PWM switched DC output of an ESC is AC, because it is.

A coil, being just a relatively short piece of wire, will have very low resistance. But, as soon as you use AC voltage to drive it, the alternating current causes a fluctuating magnetic field to form which counters the current. This looks like resistance to the supply because it is opposing. The amount of this resistance, called impedance, will vary with frequency, specific coil, and mechanical load placed on the motor. This is why getting a current value is near impossible.

The best you could do is get a runtime measurement based on your current setup, and calculate the average current draw using runtime and pack capacity used. The peak or burst current will be around 6-10X that value depending on drivestyle, esc settings, etc, but it gets you in the ballpark.

Or, use the following page once you have that data: http://scriptasylum.com/rc_speed/_power.html

Brian, I have a quick question, what settings do I need to use for Losi 8ight Buggy transmittion, differential and ratio. thanks

for the front/rear diff : 4.3 = Typical ........ 43/10

and

transmission: 1 = direct drive/center diff 1:1 for the transmission

and

additional gear ratio: 1 = default

A small update has been uploaded:

- Added more lipo charging adaptor options for packs with the typical balance connector layout.

- Added Xray XT8 differential ratio and stock spur gear.

- Added "1:1 rollout" rule to the Top Speed Estimator page. Implemented in the pinion table and at the bottom of the results section.

- Removed alert box messages and replaced with HTML code.

Click the little help question mark.

Ok, another update:

- Fixed differential manufacturer typo.

- In the Top Speed Estimator, removed the suggested "1:1 rollout" pinion in the results section. This was changed to show the current rollout ratio. The pinion tooth count to achieve a 1:1 rollout is still listed in the pinion table (click the gears icon in the results section). Added more verbiage to explain rollout and the "1:1 Rollout" rule (in the help function). Also changed the error message to be more appealing.

- Changed the color of the help window from drab gray to something that stands out a little more.

I know I'm partial to the rollout calc, but you did a great job, it's exactly what I had in mind.

I think everyone will see now that it's not a big change or whole new way of doing things.

1:1 for my Muggy is around 9T, ideal gearing so far seems to be 14T. No offense but I think that theory doesn't work so well. With a 9T pinion I'd be over-revving the motor and have no speed at all.

Another update:

Added option for Traxxas EVX2 to the wiring page. I used the info from Neil's diagram (which he originally got from me :smile:). I made it so certain other options (BEC and LVC) were disabled when this ESC is chosen.

What about the amp draw calc donated by B4maz? Here's my vote.:smile:http://www.rc-monster.com/forum/show...motor+amp+draw