16 inch front wheel with disc brake

[mudflap5]

Posted this in the E-Scooter section, but did not a response, so I thought I would try it here.


In the process of building and modifying this scooter:

Razor EcoSmart Metro Electric Scooter

http://www.razor.com/products/electric- ... art-metro/

Right now, this thing no front brakes at all!!! Trying to locate a front 16" wheel with disc brake hub. The rear wheel will be replaced with a hubmotor (48v 25a) that has a disc mount. I would like to mount a disc on the front wheel. Does anyone know where I can find a 16" wheel with a disc mount? A solid cast wheel or a spoked one will be ok.


Found this, but do not know how wide it is. It is for the Razor MX 650 dirt bike. May be too heavy duty.

http://shop.razor.com/Front_Wheel-W15128190049/

 

[Dauntless]

Dang, I have some of those wheels, on those bikes, let's not get carried away with the thoughts of heavy duty. A couple years ago that wheel was I think $33.

I guess this is the one you meant. http://www.razor.com/products/electric-scooters/ecosmart-metro/

Now for the interesting comparison: I assume the dirtbikes have their wheel size measured at the wheel itself, for 12.5". And the Echosmart is probably a bike wheel, measured at the full height of the tire. Dang, how close in size are they really?

I'm just guessing, but I don't think the wheel will fit into that fork. ANY 16" wheel with a disc is bound to be wider.

There are adapters out there, I've never tried one. Some use a rear freewheel, so if you get one 16" you're in business. Supposedly some can fit right on a regular front wheel, not sure how that can fit.
http://www.leafmotor.com/accessories-shop.html

[youtube]5g_-LSBYWXU[/youtube]

 

[mudflap5]

Dang, I have some of those wheels, on those bikes, let's not get carried away with the thoughts of heavy duty. A couple years ago that wheel was I think $33.

I guess this is the one you meant. http://www.razor.com/products/electric-scooters/ecosmart-metro/

Yep, that's the one!




Now for the interesting comparison: I assume the dirtbikes have their wheel size measured at the wheel itself, for 12.5". And the Echosmart is probably a bike wheel, measured at the full height of the tire. Dang, how close in size are they really?

I'm just guessing, but I don't think the wheel will fit into that fork. ANY 16" wheel with a disc is bound to be wider.

You are probably right about the sizes.





There are adapters out there, I've never tried one. Some use a rear freewheel, so if you get one 16" you're in business. Supposedly some can fit right on a regular front wheel, not sure how that can fit.
http://www.leafmotor.com/accessories-shop.html



[youtube]5g_-LSBYWXU[/youtube]

That is an interesting gizmo.






If parts for the disc brake cannot be located (mainly the wheel), I may just use a caliper brake on the outer edge of the rim.

Something like this:

http://www.amazon.com/SRAM-Apex-Rear-Brake-Caliper/dp/B003TIP7GM/ref=sr_1_14?s=cycling&ie=UTF8&qid=1402266842&sr=1-14

 

[Dauntless]

That is an interesting gizmo.

Calling it a "Gizmo" almost makes it sound mysterious. I think it's rather conventional. They even make adapter plates for mounting a disc brake caliper to the axle rather than the fork. The idea of finding a way to just put it on the existing wheel, much like they way they add the rear sprocket for the China Girl moped kit, there's a mystery that intrigues me.

If parts for the disc brake cannot be located (mainly the wheel), I may just use a caliper brake on the outer edge of the rim.

Something like this:

http://www.amazon.com/SRAM-Apex-Rear-Brake-Caliper/dp/B003TIP7GM/ref=sr_1_14?s=cycling&ie=UTF8&qid=1402266842&sr=1-14

Again, the good ole' fashioned side pull. You can find those on $10 garage sale bikes you scrap for parts, perch, lever and all.

 

[Marc S.]

For a 16" wheel try Sturmey Archer 70mm drum brake hubs instead of a disk brake.
Most trikes and velomobiles come with these brakes in their 20" front wheels.

They provied enough stopping power in these small wheels and are nearly maintanance free.
I had to swap the drum brake pads in my trike after about 10,000km.

 

[chisixer6]

I built a twin 16" ebike last year with disc brakes front and rear. I use shimano 36H mt hubs with disc mounts, I got a pair of 16" rims and measure and cut the spokes and thread them.using 3 cross on front and 2 cross on rear. see bike picture in avatar.

 

[mudflap5]

Never a shortage of great ideas around here!

Decided to go with this:

http://www.mtbr.com/cat/tires-and-wheels/hub/shimano/deore-m525-disc/prd_361202_127crx.aspx

The rear wheel was replaced with a hub motor. I hoping to lace up the new hub to original rear wheel and spokes, install the disc and mount the caliper.

Now I have to figure out how in the heck to lace up a wheel!

 

[chisixer6]

mudflap5;

that's what a majority of my hubs are shimano deore m525. I paid in the neigborhood of around $25 to $30.

 

[mudflap5]

Looks like I ordered the wrong hub! The new hub has 36 holes and the wheel has only 28 holes. Any way to make this work, or do I need to get a 28 hole hub?

 

[Dauntless]

I guess what you have to to do is look into 28 hole hubs AND 36 hole 16" rims. Figure out what is most viable. I find it easy to believe you're going to have a problem here.

 

[Marc S.]

Looks like I ordered the wrong hub! The new hub has 36 holes and the wheel has only 28 holes. Any way to make this work, or do I need to get a 28 hole hub?

Well, Sheldon Brown has the answer to your problem: http://sheldonbrown.com/mismatch/index.htm but you need spokes in four different lenght. Thats some pretty advanced wheelbuilding...

Or you can try a 24 hole rim and lace them to the 36 hole hub while leaving every third hole empty. Much easier to do, I guess.

 

[mudflap5]

I guess what you have to to do is look into 28 hole hubs AND 36 hole 16" rims. Figure out what is most viable. I find it easy to believe you're going to have a problem here.

36 hub holes and 28 rim holes, the math does not work out to just skip holes.

This is the first time I have ever purchased a hub, and thought that all hubs were created equal! Learn the hard way.

Found a 28 hole hub on ebay:



http://www.ebay.com/itm/Enduro-bearing-Bt02-CNC-Front-MTB-Mountain-Bike-Hub-32H-169g-Black-/231058383097

Enduro bearing Bt02 CNC Front MTB Mountain Bike Hub 32H 169g Black

Being shipped from Tiawan, so it won't be here for 3-4 weeks. Gives me plenty of time to read up on how to lace it up (which I have no clue on how to do).

 

[mudflap5]

Looks like I ordered the wrong hub! The new hub has 36 holes and the wheel has only 28 holes. Any way to make this work, or do I need to get a 28 hole hub?

Well, Sheldon Brown has the answer to your problem: http://sheldonbrown.com/mismatch/index.htm but you need spokes in four different lenght. Thats some pretty advanced wheelbuilding...

Or you can try a 24 hole rim and lace them to the 36 hole hub while leaving every third hole empty. Much easier to do, I guess.

Thanks for the link. That site is loaded with good info. Decided to just buy a 28 hole hub.

 

[chisixer6]

Mudflap5;

why are you ordering a 32 hole hub from ebay, when you have a 28 hole rim(I presume 16") and a 36 hole hub? Why don't you just order a 36 hole rim?

http://www.niagaracycle.com/categories/sun-m-14a-rim-16-36h-black

with a Sun rim you have a good chance of having the rim diameter in a spoke calculator's database, and also Shimano m525 hub will have all the info too. Now all you need is to run the calculation and have some cut and thread your spokes. Now you can build your wheel.

 

[chisixer6]

Mudflap5;

I take it that you never built a wheel before. I got frustrated when I wanted to get some small wheels built, and bike shop gave me the run around. So I went to utube and looked for a wheel lacing video, the link below I found to be pretty good, the kid made it simple,and I used it to reference, building my wheels, about 12 wheels in the last 2 years.

http://www.youtube.com/watch?v=hbUm9NFRtHQ&list=TLIbt8YKPWoU4xY0uafk2nADcINMERUeBy

 

[mudflap5]

Mudflap5;

why are you ordering a 32 hole hub from ebay, when you have a 28 hole rim(I presume 16") and a 36 hole hub? Why don't you just order a 36 hole rim?

http://www.niagaracycle.com/categories/sun-m-14a-rim-16-36h-black

with a Sun rim you have a good chance of having the rim diameter in a spoke calculator's database, and also Shimano m525 hub will have all the info too. Now all you need is to run the calculation and have some cut and thread your spokes. Now you can build your wheel.

That link was incorrect. This is what I ordered:

Enduro bearing Bt02 CNC Front MTB Mountain Bike Hub 28H 169g Black

It is a 28 hole hub. Hopefully the spokes will be the right length!

Bookmarked the link for the wheels. Thanks.

 

[mudflap5]

Mudflap5;

I take it that you never built a wheel before. I got frustrated when I wanted to get some small wheels built, and bike shop gave me the run around. So I went to utube and looked for a wheel lacing video, the link below I found to be pretty good, the kid made it simple,and I used it to reference, building my wheels, about 12 wheels in the last 2 years.

http://www.youtube.com/watch?v=hbUm9NFRtHQ&list=TLIbt8YKPWoU4xY0uafk2nADcINMERUeBy

I'll check it out when the hub arrives.