Find me a sprocket like this, only for #25 chain.
- Thread starter Eli
- Start date
Actually, I'll be enthused if anyone can find me any #25 sprockets that aren't 3/4" thick at the hub...
McMaster doesen't have sprockets like karting supply places do, but karting supply places don't have #25 stuff.
I don't want to have to machine a bunch of sh!t off and drill holes if I don't have to.
McMaster doesen't have sprockets like karting supply places do, but karting supply places don't have #25 stuff.
I don't want to have to machine a bunch of sh!t off and drill holes if I don't have to.
Damn peoples y'all need to drink or smoke sumtin' and calmmy down alittle, k?
Isn't this a holiday weekend back in the States?
Isn't this a holiday weekend back in the States?
We were going to.. the motor already has a 15mm PowerGrip pulley on it... but it seems they're more expensive than chain sprockets.
Or perhaps I've misunderstood the meaning of "cog belt"..
Timing belt, right?
Originally posted by: Kvaerner Masa
Damn peoples y'all need to drink or smoke sumtin' and calmmy down alittle, k?
Isn't this a holiday weekend back in the States?
Eli knows I'm kidding...
cog belt
Yes it's a positive drive belt, non slip.
A hand truck? LOL you know you're gonna have to put four wheels on that and a removable seat!
A poly-v will work too. Think snapper self propelled mower and yes you can use the CVT (spinning disk) from it too and have variable speeds forward and backwards.
Yes it's a positive drive belt, non slip.
A hand truck? LOL you know you're gonna have to put four wheels on that and a removable seat!
A poly-v will work too. Think snapper self propelled mower and yes you can use the CVT (spinning disk) from it too and have variable speeds forward and backwards.
Yeah.Originally posted by: Kvaerner Masa
cog belt
Yes it's a positive drive belt, non slip.
A hand truck? LOL you know you're gonna have to put four wheels on that and a removable seat!
A poly-v will work too. Think snapper self propelled mower and yes you can use the CVT (spinning disk) from it too and have variable speeds forward and backwards.
This is electric motor powered, btw. Using a scooter motor. I looked around at cog belt pullies, but for as big of one as we need.. they're really expensive, heh.
Even with a 9 tooth drive and 80 tooth driven, with the 13" tires(yeah, it's beefy) and ~1400RPM @ 12V of the motor.. we'll still be doing 6MPH. That's a pretty brisk walk..... lol
Granted, it will be on a PWM controller.. but yeah.
The reason I said one that looked like that, is because.. I think with that bolt cut pattern, it will fit the rims on the hand truck.. a 5 bolt pattern.
If you need all those holes, it's gonna be special. A PT supply house will not have something like that. Without those holes won't be a problem (but you probably know that already, I suspect). A normal sprocket like that (called an a plate.. for example what you want is like a 25A72) but you'll just have a small, say, 1/2" pilot bore in the middle.
Any competent PT place should be able to order a 25a72 for you, but it won't have those funky bolt holes around the middle of it.. that's special. Might be cheaper/easier for you just to drill those out yourself.
Any competent PT place should be able to order a 25a72 for you, but it won't have those funky bolt holes around the middle of it.. that's special. Might be cheaper/easier for you just to drill those out yourself.
Actually, "cog" belts are generally what a V-Belt is called that has teeth cut out on it (have an X prefix). What you are talking about is a synchronus belt drive.. a Timing belt is a style, but there are far better out there.Originally posted by: Eli
We were going to.. the motor already has a 15mm PowerGrip pulley on it... but it seems they're more expensive than chain sprockets.
Or perhaps I've misunderstood the meaning of "cog belt"..
Timing belt, right?
If you are using this on a cart, you should be OK, but be careful, chain is not always a good substitute for those. Some of the HTD/Powergip/Polychain/QT Powerchain (all belt) drives will actually carry more power than chain.. actually I would go so far as to say the all will depending on the size. If I had my horsepower tables at home I would tell you exactly what you need and if the 25R can do it.
And you are correct.. chain will be cheaper, but there is a reason for it. But, like I said (and you pobably know) a small chain may very well do the job for you.
That's just what McMaster Carr calls them..Originally posted by: bernse
Actually, "cog" belts are generally what a V-Belt is called that has teeth cut out on it (have an X prefix). What you are talking about is a synchronus belt drive.. a Timing belt is a style, but there are far better out there.Originally posted by: Eli
We were going to.. the motor already has a 15mm PowerGrip pulley on it... but it seems they're more expensive than chain sprockets.
Or perhaps I've misunderstood the meaning of "cog belt"..
Timing belt, right?
If you are using this on a cart, you should be OK, but be careful, chain is not always a good substitute for those. Some of the HTD/Powergip/Polychain/QT Powerchain (all belt) drives will actually carry more power than chain.. actually I would go so far as to say the all will depending on the size. If I had my horsepower tables at home I would tell you exactly what you need and if the 25R can do it.
And you are correct.. chain will be cheaper, but there is a reason for it. But, like I said (and you pobably know) a small chain may very well do the job for you.
I hadn't really thought about that much, but I don't think it will be a big deal.. The motor we're using is rated at 200W at 24V, and we're only going to be running it at 12.. It's not a monster, but it should be adequate with all the torque from the high gear ratio we want to run.
Yes I was not referring to a positive drive (no slip) for this specific application, hell for fractional hp a simple v belt will be fine.
Why underdrive the motor if you have a controller?
Why underdrive the motor if you have a controller?
Oh heck. Kvaerner is right. You could probably use darn near anything... whatever is cheapest and physically have the room for. If width is an issue (You seemed to imply that 3/4" wide hub for the sprocket was too big?) then an A plate sprocket probably will be the narrowest way to go. But, a single 4L/A belt should be fine for you... espescially if it's going to be a fairly large sheave and have the width.
Well, realistically I'd like to keep it as efficient as possible... I wasn't really sure which would be more..
Amp hours are at a premium.
It seems to me that a big 15mm thick belt would have more drag than #25 chain, but I don't know.
LMAO!
Nah.. This is actually to do work.
Well, the building it part is for play... but we won't be riding it.. lol.We like to go camping on the beach, but you have to hike a mile or more in.. Normally you can't stay more than a couple of days because you have to carry your water in.
So it's going to be our "carry-all" of sorts. We have a big 60 quart cooler that we're adding a monster peltier to, and it's going to be strapped to the hand truck.. along with whatever else we can fit.
peltier hooked up to 115Ah deep cycle battery
Reading on DMM is cold side temp in ºF, ambient is about 80ºF.
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