Speed Calculator

[sleebus.jones]

Forbidden
You don't have permission to access /rc_speed/ on this server.

Looks like we might have a permissions problem on the server?

[BrianG]

No, I think they are restoring things again and that's just temporary. Yesterday, you would get a "Page cannot be displayed" error message, so there is progress.

[RC-Monster Mike]

I can host this page on my server if needed, Brian. :)

[BrianG]

lol, I thought of that, but figured you had enough traffic. I already have access to a "certain directory" anyway, but wouldn't want people to poke around trying see what else is in there.

But, if you don't mind, you could create an "rc_calc" directory on there, and give me ftp access. I suppose it wouldn't hurt to have a mirror of the site somewhere. Thanks for the offer!

[BrianG]

BTW: The site seems to be back up now.

I also uploaded today's updates...

[BrianG]

Update:

Added shock dimension table, and a few of the shocks that I have in my parts bin. Hopefully useful for those doing custom jobs and need to know what fits...

[doo540]

Brian I think something is wrong with the gear ratio's for the HPI 5B and 5T, its telling me the ratio is .4...... which gives me a top speed of 360 mph I knew it was going to be fast but....... lol
Also I cant confirm it yet, but I was under the impression that the 5B and 5T were using the same tranny and gears. I will ask on the Baja forum to make sure.
Many thanks for adding the Baja data.

[BrianG]

lol, yeah, the ratio is messed up. It should be ~2.4. I swapped the input and output gears around.

Just take the reciprocal of the current ratio of 0.4167, which gives you the correct ratio of 2.3998080153587712982961363090953. Yeah, you can round that to 2.39981 if you want.

And if the ratio is different for the B vs the T, let me know. I add what people tell me and I assume they are correct.

[Unsullied_Spy]

Originally Posted by BrianG

And if the ratio is different for the B vs the T, let me know. I add what people tell me and I assume they are correct.

It is different. I posted the gear sizes for both a few pages back. IIRC the top gear on the B is 20T and the T is 19T. I checked HPI's website to be sure.

[BrianG]

Uploaded update.

Fixed error with HPI Baja 5T/B tranny ratios.

Added Baja 5B/T tire sizes.

Added nitro 4-tec tranny and diff ratios.

[BrianG]

Something interesting... or at least I think so.

http://www.offshoreelectrics.com/inf...s_Tips_&_Info_

(top two)

And yes, they asked permission.

[George16]

Good job Brian. Congrats.

[What's_nitro?]

Great idea. Congrats on your "exposure"! Now how do you make money from that???

[BrianG]

OK, I changed the order in the speed vs pinion table. Critics!

I'll take a look at the Flux tranny diagrams sometime soon.

As far as the other diffs, etc is concerned: To be totally clear, post the model and the tooth counts of the diffs and I'll add them.

[BrianG]

Ok, I added the diff for the HPI Flux, but am having a little trouble deciphering the tranny. I've attached the PDF excerpt from the manual showing the tranny.

86087 looks like the input gear, but there are two which is common for two-speed trans. Then I see the output shaft with one gear (86098), simple enough. But then I see what I think is the idler shaft with only two gears on it (100905 & 86084). If this is two speed tranny, where is the intermediate gear on the idler shaft (the one that contacts the output gear)? If this is a single speed tranny, where is there a dual input gear and two output gears? It looks like maybe this is a single speed tranny that is set up for future dual speed use. So, until this is cleared up, I'm not going to include the Flux tranny.