Speed Calculator

[Metallover]

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?

[Arct1k]

Originally Posted by Metallover

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?

Have 4 seconds back on your life...

[Metallover]

Originally Posted by Arct1k

Have 4 seconds back on your life...

YEAH!!:ye s:

[BrianG]

Originally Posted by Metallover

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?

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

[BrianG]

Originally Posted by jhautz

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.

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

Originally Posted by lincpimp

Hey Brian, found something you need to fix

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.

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

Originally Posted by brushlessboy16

...edit- why does the Slipperential have its own ratio?

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.

[lincpimp]

Originally Posted by BrianG

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

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.

[NoControl]

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.

[What's_nitro?]

Originally Posted by NoControl

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.

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.