Front suspension on a cruiser

[DAMIEN1307]

I don't have enough room for the disc brake rotor on the rear at all. The rotor hits the frame and I don't see how it fit.

First off, you will need a 203mm disk rotor with a 36 tooth sprocket in order to use a rear disk brake setup.

In order to not hit the frame, you will need to "stretch" the frame out by about a half an inch.

Here are the instructions on how I did it, it is in my tutorial on how I built my bike.

Whats the best bike for a 2 stroke?

Were miles away, but I bet our side of the railroad tracks are pretty similar. Before I found cranbrook in trash, I picked up a 74 schwinn world traveler & a 74-75 schwinn varsity people were throwing away, was going to build 1 of them, but long skinny front forks were scaring me. They can be...

motoredbikes.com

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

 

[Sidewinder Jerry]

Suspension doesn't matter, I just wanted the forks with the disc brake mounts to make things easier but Damien has a good plan also. Thanks for all the info I will keep you all updated and take some pics soon. I have to say the grey tri spoke mag rims look good as hell. Especially with the tires I got. I don't have enough room for the disc brake rotor on the rear at all. The rotor hits the frame and I don't see how it fit. Can't use rim brakes on the mag rims so I might be stuck with just the front brakes, that's why I want them to work good lol. I have the old Murray Monterey cruiser, wonder if the rear set up would work on that bike. But jeeez I already have the wc80 on that one. I may as well just get the front forks though. Seems to be the easiest lol.

Unless you're riding on very smooth roads; suspension can make a huge difference in comfort. I have suspension forks, adjustable suspension seat post, adjustable spring seat. Due to back surgery I wouldn't be able to ride without it.

 

[cloakedvillain]

Suspension saddle from cloud 9 and 100mm of travel ought smooth out any road.

 

[sherron82]

Or I have thought about taking the mag rims back and getting these, could I use rim brakes on these? I've seen a lot of people have these same rims on there bikes. Some people say there laced wrong but others say there awesome... Any thoughts on those?

 

[cloakedvillain]

You can but its very bad at braking. I think just replacing the fork and getting a rear that works with rim brakes will be a good middle point between ease of install and money spent.

This wheel is disc or v brake. And affordable compared to many other options. Option out as rear only and 7 speed. Problems with it: only 14g spokes. And quick release hub.

MTB Bike Wheelset 26 inch Bicycle Wheels Disc Brake Cassette 7-12 speed alloy | eBay

The wheels with Double-wall Aluminum alloy rims and 14G spokes, which provide high strength while reducing weight. It can fit7/8/9/10/11/12s Cassette system. Wheel Hub Aluminum with sealed bearings, for Cassette only.

www.ebay.com

This Bikeberry wheel isn't horrible but it is overpriced for what it is. https://www.bikeberry.com/products/...-inch-x-1-5-inch-rim-1?variant=42437994545318

Spec with disc brake ready and freewheel. It will fit the rear spacing, and you can use V brakes with it. With these it will brake well.

 

[sherron82]

That will work but you miss out on suspension. You can get a suntour fork for not too much. Around 97 usd with free shipping.View attachment 212936

That's the ones I'm gonna get, I found them on bens cycle for 70

 

[sherron82]

If all you want is a disk brake mount, You can always do what I did then...Use the black caliper adapter that forks over your axle and then just attach the appropriate size "Adel" clamp to your front fork to hold it firmly in place.

I've been riding mine like this for years now with no problems.

View attachment 212938

View attachment 212939

Do you have the adel clamp on the rear as well?

 

[DAMIEN1307]

Do you have the adel clamp on the rear as well?

Nope, I made my own rear frame to caliper adapter from military grade 7075 T-6 aluminum.

 

[sherron82]

You can but its very bad at braking. I think just replacing the fork and getting a rear that works with rim brakes will be a good middle point between ease of install and money spent.

This wheel is disc or v brake. And affordable compared to many other options. Option out as rear only and 7 speed. Problems with it: only 14g spokes. And quick release hub.

MTB Bike Wheelset 26 inch Bicycle Wheels Disc Brake Cassette 7-12 speed alloy | eBay

The wheels with Double-wall Aluminum alloy rims and 14G spokes, which provide high strength while reducing weight. It can fit7/8/9/10/11/12s Cassette system. Wheel Hub Aluminum with sealed bearings, for Cassette only.

www.ebay.com

This Bikeberry wheel isn't horrible but it is overpriced for what it is. https://www.bikeberry.com/products/...-inch-x-1-5-inch-rim-1?variant=42437994545318

Spec with disc brake ready and freewheel. It will fit the rear spacing, and you can use V brakes with it. With these it will brake well. View attachment 212984

Do those bike berry wheels come true and all?

 

[DAMIEN1307]

Do those bike berry wheels come true and all?

Mine did...lol...If they hadn't you wouldn't see me recommending them...Only the 3 spoked ones though.