19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)

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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby cal3thousand » Fri Feb 17, 2017 1:50 pm

Rix wrote:Just stumbled across this vendor. Looks like he stocks 19x1.6 and 17x1.6 rims laced to 20mmx110mm DH hubs. https://electricrt.myshopify.com/collec ... ont-wheels. Don't know anything about this company though. Has anyone had any experience?


I personally know Alan, the owner. He's a good guy, located in LA. One man operation at the moment. He's active on ES Facebook if you want to chat him up.
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby litespeed » Fri Feb 17, 2017 2:56 pm

He/they built my wheels! Excellent job in my opinion.

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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby brumbrum » Fri Feb 17, 2017 4:28 pm

@Baron, Try a knife or grinder on the outer edge of the tyre knobbles IF you do get any rubbing.
Last edited by brumbrum on Fri Feb 17, 2017 4:29 pm, edited 1 time in total. View post history.
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby ecycler » Fri Feb 17, 2017 5:04 pm

brumbrum wrote:@Baron, Try a knife or grinder on the outer edge of the tyre knobbles IF you do get any rubbing.


That is one way to get rid of the 'chicken strips' hahaha
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby parabellum » Fri Feb 17, 2017 9:22 pm

brumbrum wrote:@Baron, Try a knife or grinder on the outer edge of the tyre knobbles IF you do get any rubbing.

Good idea, last time I used carpet knife and did cut every knob one by one, it solved the problem but looked very strange esthetically. Grinder may result a good idea, I would spin the tire at good speed and try to grind the edge in question with geometrical caution (in rotation direction). Then share the result with the rest of us. :D
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby joe81 » Sun Feb 19, 2017 7:46 am

sorry to interrupt.
wheel builders, i need your guesstimation:
my brand new 19" rear wheel (bldc, single cross lacing) is centered over the motor but not relative to the axle mounting points. spokes on both sides seem to be the same length. the rim must move about 8mm to the left. the guy at the shop i asked to do the centering thinks that is not possible so we didn't try.
what do you think, how much can the rim be moved per each full turn of all the spoke nipples on each side (losen one side and tighten the opposite side)?
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby Rix » Sun Feb 19, 2017 9:09 am

joe81 wrote:sorry to interrupt.
wheel builders, i need your guesstimation:
my brand new 19" rear wheel (bldc, single cross lacing) is centered over the motor but not relative to the axle mounting points. spokes on both sides seem to be the same length. the rim must move about 8mm to the left. the guy at the shop i asked to do the centering thinks that is not possible so we didn't try.
what do you think, how much can the rim be moved per each full turn of all the spoke nipples on each side (losen one side and tighten the opposite side)?


What you are referring to is called "dishing" and its very possible. Bicycle manufactures have to dish the rim to be centered when mounted, even though the gear side (cluster or cog set) side has much more space from the spoke flange to the axle face than the disk brake side. To dish your rim, you will need shorter spokes on the left side to pull the rim over the 8mm you need. Justin's spoke calculator at Grin Cyclery www.ebikes.ca will help you determine the length of spoke needed.
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby kneedeep » Tue Feb 21, 2017 1:13 am

Does anyone know of new suppliers for 12g moped nipples? I am building a set and holmeshobbies no longer carries them.
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby joe81 » Tue Feb 21, 2017 8:03 pm

thanks Rix.
the thing is my bike shop here in a small city in china says they cannot source other spokes anyway.
after a long search this is the only shop that i found to have the proper tools and the mechanic seems to know what he is doing (very rare in china..).

..but the description in to the spoke calculator got me thinking.. if really no chance to fix it we could relace with all spokes on one side inside of the flange and on the other side on the outside.. maybe even radial if they are way too short.
i know all that will be bad for the wheel build quality..
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby Rix » Tue Feb 21, 2017 11:36 pm

joe81 wrote:thanks Rix.
the thing is my bike shop here in a small city in china says they cannot source other spokes anyway.
after a long search this is the only shop that i found to have the proper tools and the mechanic seems to know what he is doing (very rare in china..).

..but the description in to the spoke calculator got me thinking.. if really no chance to fix it we could relace with all spokes on one side inside of the flange and on the other side on the outside.. maybe even radial if they are way too short.
i know all that will be bad for the wheel build quality..


All you need are some short spokes for the one side. As far as custom cut to length spokes go, I have sourced them from China, Kingstar is legit as it gets. http://www.ebay.com/usr/kingstar-cn?eui ... xe,ext=ext you can watch a youtube video how to dish a wheel and you would be set.
Last edited by Rix on Tue Feb 21, 2017 11:36 pm, edited 1 time in total. View post history.
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby brumbrum » Wed Feb 22, 2017 4:06 pm

I just ordered one of these... https://www.electricrt.com/collections/front-wheels/products/19x-1-6-front-moto-rim-20mm-hub which have just been reduced from 200usd to 150

Thinking of getting either one of these front tyres in 70/100 profile...
http://www.maxxis.com/catalog/tire-95-113-maxxcross-it
http://www.maxxis.com/catalog/tire-97-113-maxxcross-si

Both have a section width of 83mm.

Yes it will add even more weight to my ride, but with the confidence and grip my 3.5" trials tyre has given me i have to try a proper mx tyre on the front.

Image
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby Rix » Wed Feb 22, 2017 10:11 pm

Brumbrum, your machine is seriously wicked, I like it. Some folks dont realize just how big a 3.5" wide rear tire is, from you pic, its obvious.
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby brumbrum » Thu Feb 23, 2017 3:21 am

Rix wrote:Brumbrum, your machine is seriously wicked, I like it. Some folks dont realize just how big a 3.5" wide rear tire is, from you pic, its obvious.

As a size comparison, keep in mind the front tyre is not skinny! 24"x3" which has a 26" diameter and a 73mm width(vuelta usa)
Once you go beyond a 3" tyre you are definitely into a new realm, as you yourself stated earlier in this thread. It was a nightmare to mount onto the rim until i finally got my technique down with three tyre irons and a bead buddy. The new tyre is also slightly out of balance, something i can live with but at high speed i can feel a slight oscillation. 12psi is all thats needed as the tyre is designed for this purpose with soft but strong sidewalls with the radial construction. Tread is about 12mm deep. Though the weight penalty of this fat radial tyre may take its toll as time goes on. I picked up the tyre very cheaply as new old stock. Nothing ventured, nothing gained. The front maxxis tyres linked to above should in theory be much lighter as they are two ply tyres which i guess means two nylon layers on the sidewalls and two on the tread?
Last edited by brumbrum on Thu Feb 23, 2017 3:24 am, edited 1 time in total. View post history.
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby litespeed » Thu Feb 23, 2017 9:08 am

Your bike does look awesome brumbrum! That is the same front wheel I have but I did the 19 x 2.75 Shinko 241. Its slightly harder than the rear 17 x 3.00 but feels solid on concrete turns with out wander where the rear is a little more "loose." On the dirt both ends are planted!

I gotta say I dig the monster rear tire and really like the look of full knobbies on our bikes.

I know you already told me but is your mudhugger a short or long one? Look like you have an extension on yours. I was planning on the "long rear mudhugger" and adding the "rear fathugger upgrade kit" if needed for width.

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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby brumbrum » Thu Feb 23, 2017 12:00 pm

litespeed wrote:Your bike does look awesome brumbrum! That is the same front wheel I have but I did the 19 x 2.75 Shinko 241. Its slightly harder than the rear 17 x 3.00 but feels solid on concrete turns with out wander where the rear is a little more "loose." On the dirt both ends are planted!

I gotta say I dig the monster rear tire and really like the look of full knobbies on our bikes.

I know you already told me but is your mudhugger a short or long one? Look like you have an extension on yours. I was planning on the "long rear mudhugger" and adding the "rear fathugger upgrade kit" if needed for width.

Tom


Yes i have had to extend the mud hugger, i used the standard extender, it is also the standard size mudhugger and its still letting a lot of mud get over my back :cry:
Go for the longer version, but the width will be fine for up to a 3" moto tyre. I had to widden mine with a heat gun for the monster truck 3.5 tyre on the rear lol.

Knobbles are great for me, on a 23 mile ride the other day i probably only rode 600m of road. I could never get away with using this bike on public roads without constantly checking over my shoulder to see whose watching.

I just weighed a few tyres i have... Approx rounded up weights as the digital scales i have are very sensative
3.00x17" CST C186 - 3kg
3.00x17" CST C183a - 3kg
3x24" mtb tyre Vuelta usa - 1.5kg
I imagine my vee rubber vrm308 3.5" tyre is 5kg though i have not weighed it.
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby FluxZoom » Thu Feb 23, 2017 3:02 pm

Sorry if this has been asked a dozen times, the search ignores 24". Would a 24" bicycle tire fit on a 20" motorcycle rim? Beyond 16" motorcycle rims and 20" bicycle tires, are there other bicycle tires that fit other motorcycle rim sizes?

Per http://www.sheldonbrown.com/rim-sizing.html the bead seat diameter for a 24" rim is 507mm or just about 20". I don't know if there is much for 20" motorcycle rims, though.
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby markz » Thu Feb 23, 2017 4:06 pm

spinningmagnets did an article on that.

https://www.electricbike.com/moped-rims ... hubmotors/
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby Eskimo » Sun Feb 26, 2017 2:59 am

My latest build. MXUS 500W DD, 19" 1.35 rim, 2.25 moped tire. Total weight with freewheel, torq arm, nuts 10,0kg sharp. Spoke washers? Never seen those anywhere, never used those. Spokes are custom-made 130mm 3mm stainless steel. 46 spokes (i ordered 40) and nipples with postage 71 euros. 19" is very easy size to find street tires compared to 21".

Wheel.jpg
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby FluxZoom » Sun Feb 26, 2017 10:47 am

Eskimo wrote:My latest build. MXUS 500W DD, 19" 1.35 rim, 2.25 moped tire. Total weight with freewheel, torq arm, nuts 10,0kg sharp. Spoke washers? Never seen those anywhere, never used those. Spokes are custom-made 130mm 3mm stainless steel. 46 spokes (i ordered 40) and nipples with postage 71 euros. 19" is very easy size to find street tires compared to 21".

Wheel.jpg


Where did you find the rim? Any reason you went with 2.25 moped tire? Which tire and how much does it weigh? What is the inflated diameter?
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby Eskimo » Sun Feb 26, 2017 12:31 pm

FluxZoom wrote:Where did you find the rim? Any reason you went with 2.25 moped tire? Which tire and how much does it weigh? What is the inflated diameter?


Rim is from here, local moped parts shop: http://www.moposport.fi/vannekeha-19
This tire is pretty light, 1,7kg, it"s 2-ply. It"s pretty optimal for me. Stronger than bicycle tire but much lighter than motorcycle tire.
Tire is from the same shop: http://www.moposport.fi/rengas-2-25-19- ... 853-mitroc
Last edited by Eskimo on Sun Feb 26, 2017 12:33 pm, edited 1 time in total. View post history.
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby brumbrum » Tue Feb 28, 2017 2:40 pm

Shinko tyre weights...

SR244 http://tiresunlimited.com/ALL%20TIRES/Shinko/shinko_sr244_dual_sport.htm
SR241 http://tiresunlimited.com/ALL%20TIRES/Shinko/shinko_sr241_trials.htm


The website has many differing tyres with their approx weight. I have been looking for an mx tyre size 70/100 19" and it seems that dunlop do one of the lightest at 6lb maxxis and pirelli equivalent tyres seem heavier.
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby kneedeep » Wed Mar 01, 2017 9:27 am

Rix wrote:Just stumbled across this vendor. Looks like he stocks 19x1.6 and 17x1.6 rims laced to 20mmx110mm DH hubs. https://electricrt.myshopify.com/collec ... ont-wheels. Don't know anything about this company though. Has anyone had any experience?

I ordered the front I will review upon arrival..
Chinese Ebay build in progress viewtopic.php?f=12&t=86149 , been through half a dozen scooter ebikes..No More of those.

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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby brumbrum » Wed Mar 01, 2017 2:24 pm

kneedeep wrote:
Rix wrote:Just stumbled across this vendor. Looks like he stocks 19x1.6 and 17x1.6 rims laced to 20mmx110mm DH hubs. https://electricrt.myshopify.com/collec ... ont-wheels. Don't know anything about this company though. Has anyone had any experience?

I ordered the front I will review upon arrival..



I have just ordered one as well from same vendor.
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby kingjamez » Wed Mar 01, 2017 2:30 pm

I've bought a lot from Alan / Electricrt. I've already received my on-sale 17" moto rim/hub from him along with a QS205V3 in the same 17" Rim. I'll be putting 2.75" Gazelle's on the rims tonight, but I'm very happy with the purchase so far.

-Jim
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Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tir

Postby Quokka » Thu Mar 02, 2017 1:17 pm

brumbrum wrote:
kneedeep wrote:
Rix wrote:Just stumbled across this vendor. Looks like he stocks 19x1.6 and 17x1.6 rims laced to 20mmx110mm DH hubs. https://electricrt.myshopify.com/collec ... ont-wheels. Don't know anything about this company though. Has anyone had any experience?

I ordered the front I will review upon arrival..



I have just ordered one as well from same vendor.


I always thought they were re selling motors/ wheelsets from QS. Be sure to put up some pics
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