So, the other savages just have in input gear, idler, and output gear? I can't remember all the details, but the 30/31 was something someone told me. I remember that because I thought it was odd.

NVM, I think I have it figured out.

Actually, if there is no 30/31 gears in any of the savages, what are the ratios for them?

Update:

- Added Proline Switch (Slash) tires to the Proline 2.2" rim section for the tires.

- Changed Baja spur gear pitch is Mod 1.5. Thanks to RCM forum member doo540 for this info.

- Alphabeticalized tire list.

- Added a BL Parameter Comparison page which graphically displays the effect that gearing, motor kv, and voltage play in speed, temps, and current draw. In BETA right now for user input.

- Removed Savage transmission ratios until I get the proper gear tooth counts.

Play around with the new page ("BL Parameter Comparison" under the "Other Stuff" section). If it seems confusing or isn't right, I'll just remove it.

That was quick, thanks!

I think the Brushless Parameter Conversion is a nice tool but a bit to abstract. In my opinion it would be nice if you could put the dropdown menu from the Top Speed Estimator where you can select the different motors under the Motor KV column. I would also add a scale from 5V to 50V to the Voltage culumn. Then i would set that for example the green range of Feigao motors ist 27k rpm - 33k rpm. And if you now are for example selecting a Feigao 8XL, the voltage controller jumps to around 15V.
I think the Gearing column is just nice how it is now, it depends too much on vehicle type, tire size, estimated speed, the place where you are driving around and so on.
I don't know if it can be realized or if it's worth spending that much of your time on it, but that are just my ideas. I hope you can understand what i'm trying to explain :)

Yeah, I too think something is missing, but not sure what. I don't want to add "absolute" values (like voltages or motor rpms) because it is intended to show the relative effects on speed/temp/amps from varying the input parameters. Its intent is to give someone a general feel for how a setup operates, not to suggest a setup. So, in that sense, it is supposed to be abstract. I dunno, I might just remove it.

Ah, ok. Maybe you could just split the result column in three singe columns: Temperature, current and speed. And if you then for example select the lowest motor kv and the highest voltage together, the amps and the temperature are low but the speed is normal. That would show the advantage of going HV quite well. Just another idea.....

Brian:

The Savage Flux tranny is 2.2153:1 based on the following internal gears, 44:18 and 29:32.

Correct, those are also the same ratios for the 1ST GEAR in the 2 speed savage x, 25, ss kit, and all other savage trannies that have a 2 speed.

Brian 2nd gear was correct in your calc for the 2 speed savage. Just the second ratio in the tranny. (idler to output) was wrong. I have no idea where the 30/31 came from, but it is wrong.

Is there any chance you can make the "export values" feature compatible with the Opera browser? I don't think I could ever change...

Maybe he got that from a savage 3 speed. It seems to be a little different any way.

Uploaded update:

- Fixed the export values for Opera.
- Savage tranny ratios are sorted out (hopefully)
- Fixed a couple of dead help window links.

Thanks Brian! What troubles do you have to go through to change that compatability? You're da man!:party:

It wasn't really a big deal once I figured out why it wasn't working. More details are in the release notes (on main page) if interested...

ear mark
Great info

SO many choiuces in Batteries and motors it's hard to figure out what battery amperage to use with what motor , esc setup
Still trying to figure it out
I'll have to finish reading this later, hopefully I will find the answer in here

I was wrong, the Matrix TR ratio is 11/38

I beleive the buggy is 9/26


edit- why does the Slipperential have its own ratio?

Both the Buggy and the TR use both the 11/38 and the 9/26. I'm not sure which gets which ratio diffs but depending if its the RTR version or the FTE both the buggy and the truggy come with differant ratio gears. One or the other of those 2 ratios.

...and to make it even more confusing I think they are opposite ratios for the buggy and the TR. For example the RTR buggy has the same ratio and the FTE truggy and the FTE buggy has the same ratio as the RTR truggy.

The FRE (i have one) has the 11/38, so this leads me to beleive that the RTR's run 9/26..

Way too confusing

Hey Brian, found something you need to fix:yipi:

Anyways, it is the LST 1st gear (low range). You have the primary reduction listed as 70/18, that is actually the 1st gear ratio of the 2speed on the outside of the tranny.

The correct ratio is 30/15, coupled with the bevel output ratio of 30/15 you get 4 to 1 reduction when the tranny is in low range.

Just figured that I would point that out... Thanks for the great tool again, I use it daily! (that sounded questionable)

Any chance you could add mod 1.5 to the gear diameter calculator. It would be handy with figuring stuff out for the baja 5b and 5t.

the first version of the slipperential was multi-geared (like a tranny) and built for maxx based trucks. disregard that ratio for the current version of the slipperential

Just wanted to say thanks Brian. Been a little while since I've been to the speed estimator part and just saw the little gear icon by the speed. Clicked on it and wow! That is cool! Nice work once again.

lol, thanks!

Which reminds me; Hopefully sometime this week, I plan on compiling a list of changes to add. So if anyone wants something specific, now is the time to ask! And if you want a ratio added, please provide the exact tooth counts...

The diff gears in a Hot Bodies D8 is 43/10 (typical truggy ratio). It may be useful to some people, because I really messed up on my motor choice and gearing because I assumed it had a normal buggy ratio.

when I click on the link on the first page it always has to redirect me to the current version. Those 4 seconds before I click on the link suck. Can you update that link?:whip:

Have 4 seconds back on your life...

YEAH!!:yipi::wink::smile::mdr::oh::oh::intello::ye s::angel:

:lol:

No way! It's fun to have people waste those precious 4 seconds. :smile:

Argg! Can someone verify this? Something like:
Matrix TR RTR: ?
Matric TR FTE: ?
Matrix buggy RTR: ?
Matrix buggy FTE: ?

OK, I really don't want to download the PDF and figure this out. So could you list all the gears used for each speed?
LST 1st gear: ?
LST 2nd gear: ?
List the gear pairs like so: output/input, output/input, etc. Similar to how I have the revo tranny listed in the calc. That would be the most helpful to make sure I have the right data.

And yeah, I'll add the Mod1.5

Yeah, what _paralyzed_ said. I'll differentiate between the two somehow. Might just remove the existing one or something.


So, a summary of the list of changes:

- Add Hot Bodies D8 diff: 43/10

- Sort out the LST tranny ratio

- Remove V1 Slipperential (or somehow note it is V1)

- Add V2 Slipperential "transmission": 1:1 (since there is no actual transmission).

- Sort out the Matrix ratios between the buggy and truggy, and for the RTR and the FTE.

- Add Mod1.5 gears to the diameter calc.

- Add brushed motors for crawlers:
10t = 6526 rpm/volt
15t = 4317 rpm/volt
17t = 3753 rpm/volt
20t = 3216 rpm/volt
21t = 3082 rpm/volt
23t = 2790 rpm/volt
25t = 2588 rpm/volt
35t = 1565 rpm/volt
45t = 1210 rpm/volt
55t = 987 rpm/volt
65t = 837 rpm/volt

- Add Berg and Clod ratios:
Enroute Berg: ?/?
Tamiya Clod: ?/?

Is that it? People have a tendency to come up with other things after I make changes and upload the new version. :no:

FRE truggy/buggy- 11/38
Standard Bugyg truggy 9/26

Could you add a clod and a berg into transmission - pretty please along with maybe some brushed motors 35t, 45T, 55t, 65t? pretty please with a cherry on top

Going for worlds fastest crawler chris? :lol:

I'm running the berg with 35T on 3s and 13t - Its pretty nippy...

Debating on converting SPV2 to a rock racer but son likes going slow...

Hmm. I can add the tranny/diff ratios as long as you provide the gear tooth counts. However, I am hesitant to add brushed motors; they are so '90's. :smile:

Hello BrianG can you put me in the right side please.
When I use your Speed Calculator I know all the field except the ballooning field I'm not sure what i put there.
for example i use MT badlands tires + 42 mph speed so with setup what should i put in the ballooning field

Thanks

btw: why you dont add a page for ESC's info.. just like charger's table info that you have there

Berg 36.67:1
Clod 30.1:1

Ballooning depends on the tire. I am not familiar with all types of tires so I can't really help you there. But, what I do sometimes is pick the vehicle up so no tires are touching the ground and give it full throttle. Then I try to estimate the amount of ballooning that way. And use the added radius as the ballooning value:

http://scriptasylum.com/rc_speed/images/ballooning.gif

And I was actually going to remove the charger data. It's difficult enough to keep track of all the CD/tranny ratios and motors. The charger data really has no use there except to auto-fill the fields in this page, and that list is really out of date now. ESC data would be even more irrelevant except to be able to compare specs side by side. It would be much easier to have this database driven, but as this is cleint-side script driven, data entry is cumbersome.

From holmes

10t = 6526 rpm/volt
15t = 4317 rpm/volt
17t = 3753 rpm/volt
20t = 3216 rpm/volt
21t = 3082 rpm/volt
23t = 2790 rpm/volt
25t = 2588 rpm/volt
35t = 1565 rpm/volt
45t = 1210 rpm/volt
55t = 987 rpm/volt
65t = 837 rpm/volt

What motors are those numbers for? Any normal 540 size motor? That is if I decide to add them. :wink:

Umm, tooth counts? And as I am not familiar with those vehicles, specific makes and models would be helpful.

Enroute Berg and Tamiya Clod

No idea on teeth - too many...

lol, well, I'm not gonna count them! I use tooth counts to prevent rounding errors as much as possible.

The stock Berg ratio assumes a 12T pinion. Not sure about the other gears.