Speed Calculator

[jnev]

If you can add the ratio's of the RC10GT, that would be great. I can't seem to find the ratio's of the tranny, but I'll keep looking.

Originally Posted by jnev

If you can add the ratio's of the RC10GT, that would be great. I can't seem to find the ratio's of the tranny, but I'll keep looking.

The ratio is 2.60:1...

Bye

[BrianG]

Even though the ratios are nice to have, I actually need the two gears that make up the ratio. I've found that people tend to round up/down ratios and I'd like to keep the precision as high as possible. So, if you could provide the tooth counts of the two gears that make up the ratio, that would be better.

[jnev]

Which two gears are used for the ratio? I am re builidng the tranny in the RC10GT hopefully today so I should be able to find the tooth count on the gears.

[BrianG]

Some systems are a little more difficult to calculate the ratio because the diff is part of the tranny. If you can find an exploded view of the tranny that has enough detail, I can figure it out...

[lutach]

BrianG,

You should add the Neu Motors 1521 and 1527 series to your motor selection in your speed calculator.

[jnev]

I found this exploded view:
http://www.teamassociated.com/shusti...gs/dsf_gt3.pdf
And this link for the part numbers:
http://www.teamassociated.com/misc/d...e/db_kitgt.htm

Is that all you need?

[BrianG]

I'll look into adding the 1521/27 series motors. I was trying to limit to what Mike has in the store, but we'll see.

I looked at the RC10 exploded views and found that there are two spur options; 64T and 66T, both 32P. The diff "ring gear" is 52T, but nothing on the TA site says how many teeth on the pinion part of the diff. Also, it doesn't say how many teeth on the idler gear.

So, in order to add this truck to the list, I'll need the main shaft pinion (#6571) and the idler (#5570) tooth counts.

[BrianG]

OK, added the Neu 1521/27 series motors. Also did a couple other small things, but nothing visible to you guys. I'll wait to add the RC10gt stuff until I get more info...

[lutach]

Originally Posted by BrianG

OK, added the Neu 1521/27 series motors. Also did a couple other small things, but nothing visible to you guys. I'll wait to add the RC10gt stuff until I get more info...

Very nice. If I use my 1521 1y with 10S lipos, I'll be able to hit around 119MPH. I'll be happy if it goes 80 or 90MPH LOL. I'll run it first with my 2 11.1v 5000mAh KongPower packs to see how it does. On 22.2v it shows a possible speed of 60MPH give or take a few.

[jnev]

There are actually a lot more spur gear options than that. They range from a 67t spur to a 54t spur.
http://www3.towerhobbies.com/cgi-bin...gear&search=Go

I'll keep on looking for the idler and main shaft pinion gear counts. I'll probably just end up emailing Associated...

[Patrick]

If you're be building it, can't you just count the teeth while it's apart?

[jnev]

I didn't get a chance to rebuild the tranny today unfortunately. I was busy all day. I'll try to get it all done next weekend, as well as updated pics of the RC10GT that will be just about ready to bash.

[BrianG]

Originally Posted by jnev

There are actually a lot more spur gear options than that. They range from a 67t spur to a 54t spur.
http://www3.towerhobbies.com/cgi-bin...gear&search=Go

I'll keep on looking for the idler and main shaft pinion gear counts. I'll probably just end up emailing Associated...

Yeah, I kinda figured there were more spur options, but it's funny that they list the tooth count and pitch for some gears and not others. I suppose if you know the EXACT tranny ratio, I could work backwards to figure out the pinion. And speaking of that, I really don't need the idler gear tooth count since it doesn't do anything but reverse rotational direction.

[jnev]

Got an email back from Associated the next day... very fast response, and I emailed them on Sunday. This is what they said:

The top shaft gear #6571 is 20 tooth, and the idler gear #6570 is 26 tooth.