Magwheel problems

[uhnonimaus]

Hi all, I posted a few months ago talking about my plans for a bike tour this summer. Well I decided to get some magwheels because I didn't want to have to deal with constantly having to "true" the spokes( whatever that means). This has ended up being a little more complicated than I was thinking it should be though. When I first bought them I didn't realize I needed to also get a freewheel sprocket to replace the old one.

So the magwheels and the freewheel sprocket i both got from bikeberry. Now the problem is that freewheel is too wide and when i attach it theres not enough space for the wheel to sit. I reached out to Bikeberrys customer service to see if they could set me straight; but im really just more confused. They told me
"The problem is that the spacing of the bike frame is too narrow, so spacers are being used to widen the clearance of the frame and the freewheel. If you can't find a lock nut spacer, you can use just washers. Once the axle nut is tightened, it will clamp the washers in place."

Like am i gonna have to bend the frame of my bike or something to get this to fit? Any help would be greatly appreciated. Bike is a huffy cranbrook if it matters

 

[Gordy]

You will need some spacers on the axle and spread the rear dropouts first.

 

[DAMIEN1307]

So the magwheels and the freewheel sprocket i both got from bikeberry. Now the problem is that freewheel is too wide and when i attach it theres not enough space for the wheel to sit. I reached out to Bikeberrys customer service to see if they could set me straight; but im really just more confused. They told me
"The problem is that the spacing of the bike frame is too narrow, so spacers are being used to widen the clearance of the frame and the freewheel. If you can't find a lock nut spacer, you can use just washers. Once the axle nut is tightened, it will clamp the washers in place."

Like am i gonna have to bend the frame of my bike or something to get this to fit? Any help would be greatly appreciated. Bike is a huffy cranbrook if it matters

You will need some spacers on the axle and spread the rear dropouts first.

Here's how to do it...lol.

I don't recommend this method on an aluminum frame because it would probably crack and break, but this is what i did on my Steel Frame Hyper Beach Cruiser to accomodate the rear sprocket and disk to fit within the dropouts and frame.

On my bike, (steel frame ONLY), i had to "stretch" the rear forks apart by hand, about 1/2 an inch to put the rear wheel with sprocket/rotor attached, and then use a spare 15MM axle nut on the sprocket/rotor inside of the drop down, threaded to the axle with blue locktite, to maintain that amount of "stretch" to accommodate the amount of of clearance space the rotor needs so as not to be pressed against the frame.

It helps to have a buddy with a strong pair of hands to help in this proceedure like I did...lol.

EDIT Monday, July 10th, 2023:
This link below will show you how to make a frame stretcher tool for spreading the rear of the frame if your going to use mag rims with disk brakes on your bike.....Beware, do NOT attempt stretching aluminum frames as they will crack and break.

Spreading rear bike frame (steel)

It’s nice to have an unusually strong friend around to help you stretch out the rear frame for modified rear wheel accommodation.

motoredbikes.com

And this link showing pics of how it is used to stretch the frame.

Spreading rear bike frame (steel)

It’s nice to have an unusually strong friend around to help you stretch out the rear frame for modified rear wheel accommodation.

motoredbikes.com

You will also need a freewheel sprocket for the pedal chain side of things as well and will probably need to add chain links to the pedal side as well since the freewheel is larger than the stock coaster brake pedal sprocket.

https://www.amazon.com/Sunlite-Single-Speed-Tooth-Sprocket/dp/B00LOXYASK

Ps...I also eliminated having to use a chain tensioner by cutting the drive side chain down to custom fit like a motorcycle chain when i also did the pedal side chain sizing so they are now both custom fit for the bike.

 

[robe]

Some of these wheels have the disc brake mounting flange so far out board that you need to off set the sprocket closer to the wheel.

You can buy adapters or make your own. Something like this can work.

The reason this picture is called RagJointHardware is because I used the rag joint hardware as spacers. Took some grinding and filing to make it happen.