Spur Gear

[yuhaoyang]

72:1 ratio.... riiiggghhhttttt
Normal gears are ~19:1, high torque are ~21:1, high speed ~16:1
Buy a set of XYT gears as temp replacements, they're $8 and cheap steel.
With a ratio of 72:1, you'll be getting like 3 RPS
Or get these http://www.ebairsoft.com/double-torque-gear-p-2035.html
At stock CA velocities, you should be able to run high speed gears, give whatever you want a try and see the results, if you go to the parts section, there are double, triple and max torque sets, along with high and ultra speed sets.

[scurvythepirate]

Originally Posted by yuhaoyang

72:1 ratio.... riiiggghhhttttt
Normal gears are ~19:1, high torque are ~21:1, high speed ~16:1
Buy a set of XYT gears as temp replacements, they're $8 and cheap steel.
With a ratio of 72:1, you'll be getting like 3 RPS
Or get these http://www.ebairsoft.com/double-torque-gear-p-2035.html
At stock CA velocities, you should be able to run high speed gears, give whatever you want a try and see the results, if you go to the parts section, there are double, triple and max torque sets, along with high and ultra speed sets.

Oh god, "Partly made of steal". I wouldnt buy anything internal from EB Airsoft, ever. Knowing their stuff you'll just f-up your gun.

[yuhaoyang]

it's temporary, a gap filler.
I say buy it =/ I ran a CA on a XYT sector gear for half a year, and it worked fine.

[TokyoSeven]

http://www.airsoftparts.ca/store2/in...roducts_id=567

Problem solved.

Oh look you can buy just a spur gear as well.

http://www.airsoftglobal.com/product...oducts_id=1161

http://www.airsplat.com/Items/AC-UPI-ICS-MC08.htm

Shop around and find a retailer with the lowest shipping and your set.

It appears you can source parts directly from CA, although the lack of pricing seems to lead me to believe that they may not be full operational in sales. http://www.classicarmy.com/products.php?cPath=23_99

[yuhaoyang]

TM gears won't fit in CA box, at least not the V2 I had before.
More specifically, all the gears fit fine except for the sector gear, which strikes the post that the switch spring is attached to

EDIT: http://shop.ehobbyasia.com/upgrade-p...g-gearbox.html
see, steel; I've handled 4 of these sets so far, found no lemony bits. Plus the $8 shipping makes it quite economical.
But they do cost 1/4 prometheus gears, so maybe just buy those.

[Skruface]

I am surprised that no one has suggested Modify gears (the standard ones; not the ones with the bracket). At $50-ish bucks a set, they're fairly priced and Modify has an excellent reputation.

[turok_t]

Originally Posted by TokyoSeven

http://www.airsoftparts.ca/store2/in...roducts_id=567

Problem solved.

Oh look you can buy just a spur gear as well.

http://www.airsoftglobal.com/product...oducts_id=1161

http://www.airsplat.com/Items/AC-UPI-ICS-MC08.htm

Shop around and find a retailer with the lowest shipping and your set.

It appears you can source parts directly from CA, although the lack of pricing seems to lead me to believe that they may not be full operational in sales. http://www.classicarmy.com/products.php?cPath=23_99

Hey T7, didnt u say that i should be getting all gears from the same brand to ensure fitment? I was thinking about just buying the spur gear as well, but what happens if it doesnt fit with the other 2 CA gears?

Also, is 72:1 ratio really bad?? What does 72:1 translate to in terms of ROF?

On the King Arms website, it says that "normal" is 72:1, but tYuHaoYang said its 19:1.. which is right?

[yuhaoyang]

quite literally like 3 bps.... a high torque set has the sector spinning once every 21 bevel cycles, 72:1 means the bevel spins 72 times every 1 sector spin.

[TokyoSeven]

Originally Posted by yuhaoyang

TM gears won't fit in CA box, at least not the V2 I had before.
More specifically, all the gears fit fine except for the sector gear, which strikes the post that the switch spring is attached to

Thats an interesting tid bit, I will keep an eye out for that the next time I look in a classic army V2. I havent worked on a CA in a very long time, since back in the buy a CA and drop a TM mechbox and throw the CA mechbox in the garbage days.

Originally Posted by turok_t

Hey T7, didnt u say that i should be getting all gears from the same brand to ensure fitment? I was thinking about just buying the spur gear as well, but what happens if it doesnt fit with the other 2 CA gears?

I did state that one should attempt to keep everything to one brand, however you stated that you wished for something temporary so I provided you with suggestions.

The non TM gear that I listed was quoted to be Classic Army compatible. Since I am not the retailer I can not confirm or deny whether or not the gear is compatible. Your best bet would be contact the retailer and ask them for sure. In the end if you purchase the gear and it is not compatible then you can contact the store you bought it from and give them shit for being dirty liars and demand a refund.

Do you have any more what ifs I can attempt to answer for you?

What if the retailer is out of stock on the gear I want?
- Find another retailer
What if it doesnt fit?
-Send it back for a refund
What if they dont take it back?
-Im sure you will be able to work something out
What if my mechbox explodes and I die?
-You should probably learn to shim better.
What if my new spur gear causes my hair to go green?
-Buy some purple pants and matching jacket and pretend youre the joker
What if I discover I enjoy anal stimulation?
- Its all apart of growing up

[turok_t]

So ive been doing alot of research about gears and ratio on / off ASC. To my understanding, the higher the ratio, the more revolutions the bevel gear spins in order to make the sector gear complete 1 revolution. So for example, a 72:1 bevel gear will have to spin twice as much as a 36:1 bevel gear in order to produce 1 revolution of the sector gear.

So shouldn't the 36:1 gear have HIGHER torque than the 72:1, because it is able to produce more power? I just wanted to verify this to make sure I understand. Please do not flame my ass

[chaosnemesis]

umm. no.. think of it like your bicycle going up hill. On the easiest gear you'd have to pedal (bevel) 72 times to make the wheel(sector) turn once. You'll make it up the hill, albeit very slow, but you'll make it. On the hardest gear( we'll say it's 2:1) you won't even be able to start the climb.

Why you ask??? You are the motor, and you only produce a constant 1/3 horse power. So everytime(on easy gear) you cycle once, you're putting one full cycle of power on 1/72 nd of the sector wich means you were putting in 72 times 1/3hp per sector cycle. Lots and lots of torque. That's why your were able to make it up the hill.

On the hardest gear all your power is spread over 1/2 of the sector. so only 2 times 1/3hp. Very low torque but very very fast sector rpm.

[turok_t]

Originally Posted by chaosnemesis

umm. no.. think of it like your bicycle going up hill. On the easiest gear you'd have to pedal (bevel) 72 times to make the wheel(sector) turn once. You'll make it up the hill, albeit very slow, but you'll make it. On the hardest gear( we'll say it's 2:1) you won't even be able to start the climb.

Why you ask??? You are the motor, and you only produce a constant 1/3 horse power. So everytime(on easy gear) you cycle once, you're putting one full cycle of power on 1/72 nd of the sector wich means you were putting in 72 times 1/3hp per sector cycle. Lots and lots of torque. That's why your were able to make it up the hill.

On the hardest gear all your power is spread over 1/2 of the sector. so only 2 times 1/3hp. Very low torque but very very fast sector rpm.

Thanks for your reply! I finally get it now after doing some research online regarding the physics and dyanamics of gear mechanics. Anyways, what is the usual gear ratio range in airsoft? In other words, what is the highest (max torque) and lowest (highest speed) gear ratios in airsoft?

[m102404]

Go to airsoftmechanics.com and read up on gear ratios there. RiotSC has written up whole articles on gear ratios, calculations on theoretical ROF and even designed a dual sector gear (shoots twice with each rotation...neat).

Another way to look at it is that the Modify High Torque gear set has a ratio of 21.6:1 and their High Speed gear set a ratio of 16.32:1. A "normal" ratio is somewhere inbetween there.

Another way to find out more is to read some of the stickied upgrade guides on this site. There's talk about the different gear sets...more general stuff vs. specific numbers.

A point to note is that unless you're going to get into the math of it (and I haven't seen that on this site...try airsoftmechanics), it's not worth locking into a specific set of numbers.

Do some more searching yourself...the info is right there in front of you.

[turok_t]

Originally Posted by m102404

Go to airsoftmechanics.com and read up on gear ratios there. RiotSC has written up whole articles on gear ratios, calculations on theoretical ROF and even designed a dual sector gear (shoots twice with each rotation...neat).

Another way to look at it is that the Modify High Torque gear set has a ratio of 21.6:1 and their High Speed gear set a ratio of 16.32:1. A "normal" ratio is somewhere inbetween there.

Another way to find out more is to read some of the stickied upgrade guides on this site. There's talk about the different gear sets...more general stuff vs. specific numbers.

A point to note is that unless you're going to get into the math of it (and I haven't seen that on this site...try airsoftmechanics), it's not worth locking into a specific set of numbers.



Do some more searching yourself...the info is right there in front of you.

Yes I did the researching already. I already read through that article on airsoft mechanics yesterday and how they derived these formulas to caculate using your motor's RPM and ratio.. pretty neat

[turok_t]

Ahh, so i just installed my new G&P gears and everything worked fine! It was my first time opening up and tweaking my CA mechbox and it wasn't as hard as I thought. I just followed mechbox.com and some other videos as well.

Anyways, I have a Prometheus 6.03 inner barrel with G&P hop up. I realized that if I dont put the hop up on, it shoots fine. But if i turn on the hop up, the bb's start to dribble out of the gun, showing that there are probably 2 bb's in the barrel and the one that is fired is sitting in front of the next bb in the chamber. Anyways, how do i turn on the hop up so its enough to hold the bb in place, but not cause it to get stuck?