What is this thing on my wheels?

[moun10biker]

I have this thing on my tires. I have no Idea what is its, and if it is needed.
It says "Falcon" on it. Do i need this, As I think it may affect the sprocket.
The bike is made by Pacific, but I don't know the model name.

 

[fetor56]

It's your coaster brake arm...without it u would have no rear brake.

 

[moun10biker]

I cant attach my sprocket on the rear wheel because of it. What do it do?

 

[scottyo]

I bent mine a bit to make it fit then I had to dremel the opening on the drive sprocket because the brake arm was touching the sprocket. Word of advice: assemble the back wheel and sprocket to see if you will need to dremel the hole larger. if there is still contact between the arm and the sprocket then dis-assemble and dremel to increase the hole's diameter.

 

[Al.Fisherman]

You will find out that after you remove the coaster brake arm to install the gear, the rear gear will not fit over the dust cover to the rear bearings. You have a couple of options. The first I don't like and there are some here that use this option and that is to do away with the bearing dust cover. The second option and the one that I did was to make the gear fit over the dust cover. This is not hard to do if you have access to a drill press. Some use a file, as a third option...good luck. I have a video as to how I did mine at home, took about 15 minutes including set up.

http://www.youtube.com/watch?v=_HPtY0OmS8Y

Although I don't have eye protection on doing the video, I did in fact when I was doing the mod. I did the video after I had already made the mod.

One more thing and that is I added a second brake clamp over that arm as insurance...you won't like what happens should that flimsily clamp fail. A worm gear hose clamp works well.

 

[motorpsycho]

dude, if you don't know what that is...then how are you going to put a motor AND the rear sprocket on your bike, and keep it tuned and running right?
you will need to remove the arm, put the sprocket on and then re-install the arm. you will need to either remove the bearing dust cover OR have the center of the sproket machined out big enough to go over the dust cover. The sprocket bolts might hit the arm, so you may need to slightly bend the arm, OR get the sprocket bolt holes counter sunk and use flat button head stle bolts instead of the ones that come with the kit.
I hate to sound so harsh, but putting a motorized bike together, getting it running, and KEEPING it running good is not for someone who does not have mechanical knowledge. Not knowing what a coaster brake arm is scares me.

 

[HoughMade]

You will find out that after you remove the coaster brake arm to install the gear, the rear gear will not fit over the dust cover to the rear bearings. You have a couple of options. The first I don't like and there are some here that use this option and that is to do away with the bearing dust cover. The second option and the one that I did was to make the gear fit over the dust cover. This is not hard to do if you have access to a drill press. Some use a file, as a third option...good luck.....

Fourth option- just trim the very edge off of the dust cover on a grinder or with a Dremel.

Thanks to member Charlie for the pics:

 

[AussieJester]

4th and safest option put on a different hub and get a decent brake, you shouldnt be using ONLY a coaster brake on a motored bike in the first place IMO... if you don't have a decent front brake i strongly suggest you get one.

KiM

 

[moun10biker]

dude, if you don't know what that is...then how are you going to put a motor AND the rear sprocket on your bike, and keep it tuned and running right?
you will need to remove the arm, put the sprocket on and then re-install the arm. you will need to either remove the bearing dust cover OR have the center of the sproket machined out big enough to go over the dust cover. The sprocket bolts might hit the arm, so you may need to slightly bend the arm, OR get the sprocket bolt holes counter sunk and use flat button head stle bolts instead of the ones that come with the kit.
I hate to sound so harsh, but putting a motorized bike together, getting it running, and KEEPING it running good is not for someone who does not have mechanical knowledge. Not knowing what a coaster brake arm is scares me.

That's why i'm here! There's a first time for every thing, and I am learning alot about mechanics, and how engines work. Thanks for your concern.

I got the dust cap grinded enough so i can fit it on. Thanks for the pictures. They helped me a bit. I had to make the center hole of my sprocket larger from 3.5cm to 4 cm to fit it closer to the spokes. I also made the uncut rubber bushing thinner. I am going to get some front disk brakes, or get some high quality linear-pulls. I am adding a rear side pull caliper to add to the braking. Thanks a ton for all the help.

 

[Porkchop]

That's why i'm here! There's a first time for every thing, and I am learning alot about mechanics, and how engines work. Thanks for your concern.

I got the dust cap grinded enough so i can fit it on. Thanks for the pictures. They helped me a bit. I had to make the center hole of my sprocket larger from 3.5cm to 4 cm to fit it closer to the spokes. I also made the uncut rubber bushing thinner. I am going to get some front disk brakes, or get some high quality linear-pulls. I am adding a rear side pull caliper to add to the braking. Thanks a ton for all the help.

You go for it pal ! We've all been 14 at one point in our lives. I don't understand what you're talking about as far as linear pull brakes, if that's the same thing as cantilever brakes, your bike will need to have mounting lugs for them. Chances are great that if the bike you're working with has a rear coaster brake, it will not have lugs to attach a cantilever brake. If you don't understand, let me know and I'll try to explain and/or post photos. Do your self a big favor and do you homework. If you start with a bike that's not a good candidate to start with, you'll end up getting discouraged and spend a lot of wasted time and more MONEY than it's worth. Better to spend a few dollars on a good bike to start with. Don't be afraid to ask for help here on the forum. Hope this helps.