We do not have any gear motors with sprockets for #35 chain. The gear motors that we carry have sprockets for either #410 chain, or #41 / #420 chain (#41 and #420 chain are the exact same size however #420 is stronger than #41).
We sell off-the-shelf and custom-made sprockets for #410 and #420 chain: https://electricscooterparts.com/sprockets.html
Our 24 and 36 Volt gear motors that are 450 Watts and under have sprockets for #410 bicycle chain, while our larger 36 Volt 650 Watt gear motors have sprockets for #41 and #420 chain.
For beach wagons that will not carry too much weight and will be geared for walking speed most people use a 24 Volt 350 Watt gear motor, and for beach wagons that will carry heavier loads the 36 Volt 650 Watt gear motors are typically used.
Do you know how much weight the beach wagon will need to carry, and if it will need to go up any steep hills?
Hi, it's disappointing that you don't carry the sprocket for the #35 chain. Would you be able to order one or could I order one to fit to one or your motors? I assume that also means you do not have the chain that fits the #35 chain either? If this is the case, could you or I get this in the same location as the sprocket? Another question I have is regarding the motor. Let's say if the motor is off or the batters were not charged, will I be able to move the wagon?
Do I need to get something that that will enable the wagon to freewheel? If so can I attach it to the motor sprocket or does it need to be attached to the wheel sprocket. To answer your questions the total distance from my home to the beach is about 250 yards. There is a slight incline going from my home to the beach. This distance is on a paved road. At this point you reach the entrance to the beach and proceed down a slight decline on the sand. Naturally going back this travel will be reversed. The incline will be on the beach and the decline will be in the paved road. The wagon weighs approximately 90 lbs. if you were to add another 90 lbs. in "beach stuff" that would be 180lbs. So with the motors and batteries if you were to use 200 lbs. I think that would be more than enough. I'm trying to do as economically as possible. Lastly although I really like your site. Thanks for any assistance you can give me. Regards...Nick
We also have dozens of other beach wagon and beach cart kits available at this link:
These kits can be modified with different parts such as larger or smaller batteries, different throttle, etc. upon request.
We can custom-make a sprocket with 2-7/8" bolt circle diameter. Here is a link to our custom-made sprockets order page:
If you decide not to use a freewheel then a sprocket with a 2-7/8 bolt hole circle for #410 chain could be ordered for use in conjunction with our 450 Watt and under gear motors. Or if you prefer a 36 Volt 650 Watt gear motors which has a sprocket for #41 or #420 chain then a sprocket could be order for that size of chain.
If you want to have a freewheel then there is a solution for that which some of our customers have used. The wheel bearing in your photo looks to be around 1-3/8" OD, and our freewheel mechanisms have a 1.375" ID, so there is no way I can see to weld a freewheel adapter onto that rim. The largest ID bore of our freewheel adapters is 1" because there needs to be a little material left on the adapter between its inside diameter bore and outside diameter threads. To install a freewheel adapter onto that wheel would require a flange to be fabricated with a 1" ID bore and 3-1/2" or larger OD that would bolt onto the wheel and the freewheel adapter would be welded onto. A metal fabrication shop could make this flange and weld the freewheel adapter onto it. This flange would basically be a huge 1" ID x 3.5" OD flat steel washer with four holes in it to mount to the wheel. It looks like it might need to be spaced away from the rim a little with washers to clear the end of the bearing. Here is a drawing of this idea.
Here is a photo of the freewheel adapter with 1" ID.
Attaching the freewheel to the sprocket is simply a matter of bolting the two parts together. We have sprockets for #410 chain that are sold with freewheels and bolts so there is no guesswork involved. Here is a photo of this part.
The freewheel in the middle of the sprocket threads onto the freewheel adapter.
It looks like this setup would place the sprocket around 1/2" further away from the wheel than it is now, however the freewheel adapter could be shortened on its back side by cutting, sanding, or machining it to make the sprocket fit closer to the rim if necessary.
A freewheel disengages the axle or wheel from the chain sprocket when the axle or wheel rotates faster than the chain sprocket. When the chain sprocket rotates faster than the axle or wheel then the freewheel engages to transfer the power from the sprocket to the axle or wheel.
In the photos that you attached the wheel has bearings which isolate its rotation from the axle, so the axle does not rotate and is stationary, which is referred to as a dead axle. With a dead axle drivetrain the freewheel engages the wheel itself, and not the axle, so the freewheel is mounted onto the wheel instead of the axle.
In a different type of drivetrain than your beach wagon has, with a live axle, the freewheel would be mounted onto the axle and engage it when the sprocket was spinning faster than the axle.
Here is a drawing showing how freewheels work.
We sell freewheels and freewheel adapters that engage and are threaded in both clockwise and counterclockwise directions.
We do not sell any freewheel sprockets that fit our gear motors because they are not mass produced. We do sell a freewheel sprocket that fits our Currie electric scooter motors however the output shaft on these motors spins to fast for the motor to be used on a beach wagon.
If the sprocket was attached directly to the rim with bolts then that would bypass the freewheel and it would not be functional. The freewheel would only work when attached to the axle with a live axle type of drivetrain.
Please let us know if you have any questions.
Here is a drawing of the side view with the sprocket and freewheel threaded onto the adapter and flange.
It sounds like you understand my freewheel to rim adapter idea perfectly from your description.
Please do not hesitate to let us know if you have any further questions.
I can put together a kit for the project. We will just need to narrow down which parts to include with it.
If you will be installing a freewheel in the drivetrain then the beach cart would not move when the motor is in reverse. To have reverse would require the sprocket to be mounted directly to the wheel without a freewheel.
We have full length twist, half length twist, and thumb throttles that fit 7/8" OD handlebars, and a full length throttle that fits 1" OD handlebars. The throttles that fit 7/8" OD handlebars are available with battery meters, and some of them with switches that could be used for the power switch. The throttles that are compatible with a 24 Volt system are on the following pages: