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

[fechter]

I'm using a 16" moped tire on a 20" bicycle rim. It's a double walled rim. I think the real problem would be the tire bead has little ridges that run radially. Those would leak against the rim.

Anyway, I have the tire off and changed the inner tube already. I managed to snake bite two tubes putting the tire on. What a pain. I think I finally got it. It takes a really big tire lever to pull that tire on the rim and I think the tip was just a bit too long or my technique sucks.

 

[macribs]

Did you see the link I posted, there they did the tubeless on MTB rims. There are also videos on youtube about this.

 

[litespeed]

I converted to motorcycle rims/tires earlier this year and have to say it's probably been the greatest decision I made since I got into ebiking. Running a QS205/MaxE with a 20s15 pack the Shinko 241 19 front and 17 rear adds so much confidence to run the trails fast ( 20 to 30 mph ) and on the street. Braking is so solid as is the cornering bite on pretty much every surface I have tried. Now with Hubsinks and ferrofluid I can't even get a break while riding....have to go till the battery is dead now!

Other than a newer 20s13 or 15p of some VTC5 cells which I plan on getting this winter and maybe some fenders I say I have the perfect bike for me.

Tom

 

[madin88]

with a 20s15 pack the Shinko 241 19 front and 17 rear adds so much confidence to run the trails fast ( 20 to 30 mph ) and on the street. Braking is so solid as is the cornering bite on pretty much every surface I have tried.

Other than a newer 20s13 or 15p of some VTC5 cells which I plan on getting this winter and maybe some fenders I say I have the perfect bike for me.

all my bikes are built for street so i'm running only street tires (SAVA MITAS MC11 17x2,5/2,75") but for offroad i would pick the shinko as well. that tire is used and mentioned so often it must be great

i wonder why you go from 15p to 13p. does the actual battery sag so much?
VTC5 are great, but EXPENSIVE compared with 25R which have very similar performance.

 

[Rix]

I converted to motorcycle rims/tires earlier this year and have to say it's probably been the greatest decision I made since I got into ebiking. Running a QS205/MaxE with a 20s15 pack the Shinko 241 19 front and 17 rear adds so much confidence to run the trails fast ( 20 to 30 mph ) and on the street. Braking is so solid as is the cornering bite on pretty much every surface I have tried. Now with Hubsinks and ferrofluid I can't even get a break while riding....have to go till the battery is dead now!

Other than a newer 20s13 or 15p of some VTC5 cells which I plan on getting this winter and maybe some fenders I say I have the perfect bike for me.

Tom

I am running MC tires front and rear on my Alpha and I like it. Does come at a weight penalty though.

 

[liamcaff]

all my bikes are built for street so i'm running only street tires (SAVA MITAS MC11 17x2,5/2,75") but for offroad i would pick the shinko as well. that tire is used and mentioned so often it must be great

Where can you get SAVA MITAS MC11 17x2,5/2,75" in Europe? Looking for something similar

 

[madin88]

Where can you get SAVA MITAS MC11 17x2,5/2,75" in Europe? Looking for something similar

IIRC i bought a set online at www.oponeo.at and before i got them from a local moped shop here in austria.
better you using google and check a few online tire shops (most car tire shops have moped and motorcylce tires as well).

I also have one 80/90 17" BT39 battlax racing tire with very soft compount, but have not tried it out yet.
From the size it is between 2,5 and 2,75" (more 2,5 ish), but it is way more heavy and the wire bead is much bigger. I hope it gives me better traction on my hubmotor bike when cornering on uneven roads. Soft rubber compound together with low air pressure should imporve the handling of heavy hubs.

 

[OCD Garage]

A question for Rix or anyone else in the know:

I have a moto wheel set to build for an up coming project, the rear went fine as it was 1x, but I wasn't thinking about the effect of the angled holes on the front and so ordered spokes for 3x like a normal wheel. Of course it turns out this puts some of the spokes on the opposite angle to the hole drilling. Is single cross on the front wheel the only choice too? I have since noticed that the pre-built front moto-wheels from QS motor are only available as single cross.

Thanks

 

[madin88]

Of course it turns out this puts some of the spokes on the opposite angle to the hole drilling. Is single cross on the front wheel the only choice too? I have since noticed that the pre-built front moto-wheels from QS motor are only available as single cross.
Thanks

it should not matter if one, two, or three cross.
could it be that your spokes don't have the right length?
check google for pictures or tutorials of how 3-cross needs to be done.

 

[Rix]

I have to agree with Madin OCD. Unless the rim was intentionally drilled for 2X paired lace which I have only seen on old classic MCs, there shouldn't be an issue.

 

[litespeed]

with a 20s15 pack the Shinko 241 19 front and 17 rear adds so much confidence to run the trails fast ( 20 to 30 mph ) and on the street. Braking is so solid as is the cornering bite on pretty much every surface I have tried.

Other than a newer 20s13 or 15p of some VTC5 cells which I plan on getting this winter and maybe some fenders I say I have the perfect bike for me.

all my bikes are built for street so i'm running only street tires (SAVA MITAS MC11 17x2,5/2,75") but for offroad i would pick the shinko as well. that tire is used and mentioned so often it must be great

i wonder why you go from 15p to 13p. does the actual battery sag so much?
VTC5 are great, but EXPENSIVE compared with 25R which have very similar performance.

Right now I have a 20s15p of Konion cells and is a 22.5 amp pack. It sags about 7 to 8 volts at 196 amps (as shown on the MaxE screen) so I figured next pack I could go slightly lighter 13p and save a couple pounds and still have a 33.8 amp pack or just go for the same size with a 39 amp pack. I like the Koinion because they are rated as 30 amp cells not 20 like the 25R. With this big beast I'm running more overhead is better.

Having run the koinion already I like the way they perform and stay balanced. I'll definitely see what the best deal is once I'm ready to buy and take that into consideration. One thing I've found out with the QS205 motor is I like to run it hard and lots of throttle....I believe that make the VTC5 my best choice.

Tom

 

[atarijedi]

To all you running motorcycle rims, what front hub did you use?

It needs to be 36H and able to mount a bicycle disc brake on it, and take like, 12G spokes. Having a hard time finding one.

Thanks!

 

[macribs]

@litespeed I've seen Sony VTC 6 @3100 mah also 30A discharge for under 6 €, can't remember where it might have been nkon site.
AFAIK the vtc 5 is 2600 mah so the vtc 6 will give noticeable more Ah. For a 20s15p you will have 46,5 Ah. And for 20s13p 40,3 Ah.

That mean for your 300 cell battery if you sink another 100-150€ you get the higher mah vtc 6. Expensive I know, but 30A discharge and high capacity.

 

[Merlin]

Interesting how the real world statistics are if you push the 18650 to the rated amps and how long they live....

http://www.mountainprophet.de/2016/07/22/eine-stichprobe-cyclelife-test-sony-vtc6-vs-lg-hg2/


Sry it's in German.

But pretty sure you can see that the Sony vtc6 lost after 25 cycles all ready 20 percent capacity and that means they are finish...
Let's say LG does 50 cycles....

18650 had double cycle lifetime as lipo?
Safety yes.... Worth the double /triple money?..... Your decision.



Ontopic

A 17 inch Michelin gazelle m62 (3.00 wide) has an outside diameter of 1863mm.

Thats really huge and 9cm near to a 19 inch 2.75 tire.

 

[litespeed]

@litespeed I've seen Sony VTC 6 @3100 mah also 30A discharge for under 6 €, can't remember where it might have been nkon site.
AFAIK the vtc 5 is 2600 mah so the vtc 6 will give noticeable more Ah. For a 20s15p you will have 46,5 Ah. And for 20s13p 40,3 Ah.

That mean for your 300 cell battery if you sink another 100-150€ you get the higher mah vtc 6. Expensive I know, but 30A discharge and high capacity.

I think I'd probably stick to the VTC5 only because they have been around so long and the 6s are still relativity new still. I'm not sure my butt could take a 46.5 amp battery.....after 2 hours I'm ready for a break. I'm hitting about an hour and 15 to 30 mins on the pack I have if ridden hard.

I guess as I mentioned before I'll see what ever the best option is when I'm ready to drop the cash. It will be early next year at soonest.

Thanks for the input.

Tom

 

[litespeed]

Interesting how the real world statistics are if you push the 18650 to the rated amps and how long they live....

http://www.mountainprophet.de/2016/07/22/eine-stichprobe-cyclelife-test-sony-vtc6-vs-lg-hg2/


Sry it's in German.

But pretty sure you can see that the Sony vtc6 lost after 25 cycles all ready 20 percent capacity and that means they are finish...
Let's say LG does 50 cycles....

18650 had double cycle lifetime as lipo?
Safety yes.... Worth the double /triple money?..... Your decision.

That would suck to buy and build a pack with that short of a lifespan.....another anxiety to have, great!

Thanks for the heads up.

Tom

 

[madin88]

That would suck to buy and build a pack with that short of a lifespan.....another anxiety to have, great!

Thanks for the heads up.

Tom

yes the 20A cylce performance suck, but only because the rated specs form the manufacturer are nine time out of ten equatable with BIG ABUSE!
Those 18650cells will get way too hot at the end of such 20A continuous dicharge, and heat is known to highly accelerate aging.

If you push the LiPos at the Limits (16Ah Multistar at 160A cont / 10s 320A), i doub't you will see better cycle Life. Furthermore you probabaly will see many puffed cells after a few of such cylces and you could be lucky if they don't get up in flames.

For most Li Batteries, you better see the continuos rating more as peak rating (for 5-10sec or so), and for real continuos use you should devide it at least by two if you want any usable cycle life (or not exploding battery pack)

 

[ziltoid81]

Just talk to some rc guys........on the rc cars or planes you pull these high amps with just one or 2 packs.
And surprise......these packs dont live long.

The test is interesting but for ebikes its nonsense.
How long can you pull max. amps?
I reach 80kmh in a few seconds.........i dont ride at the highway so often.
Once you hit your cruising speed 45-70kmh, the amps are back down.

On topic.

After 2500km im very pleased with the cheap vee rubber vrm015 in 18x2.5.
No noticeable wear, very good on the street and LIGHT offroad like dirt roads.
I came from a shinko 241 and dont get me wrong the 241 is a beast.......but i expected the vee rubber to perform worse.

Im completely pleased for ~20€.

 

[Rix]

Interesting how the real world statistics are if you push the 18650 to the rated amps and how long they live....

http://www.mountainprophet.de/2016/07/22/eine-stichprobe-cyclelife-test-sony-vtc6-vs-lg-hg2/


Sry it's in German.

But pretty sure you can see that the Sony vtc6 lost after 25 cycles all ready 20 percent capacity and that means they are finish...
Let's say LG does 50 cycles....

18650 had double cycle lifetime as lipo?
Safety yes.... Worth the double /triple money?..... Your decision.



Ontopic

A 17 inch Michelin gazelle m62 (3.00 wide) has an outside diameter of 1863mm.

Thats really huge and 9cm near to a 19 inch 2.75 tire.

I would like to see some lifespan data on 30Q cells, not charging above 4.07 volts per cell, and not discharging below 3.15 volts per sell, and only bursting max C and running about 2.5C constant. Anyone have any idea? I have about 65 cycles now on my 18s 21Ah pack and have noticed ZERO decrease in volt sag and performance.

 

[Merlin]

Not only 19" Wheels to be ontopic but some Infos about weight from different Rims....

 

[joe81]

anybody here using 19" with 20mm axle in the front?
single cross pattern? which spoke gauge and hub maker?

 

[Merlin]

19" yes
20mm axle yes

1cross????? nope....absolutley to weak.

 

[Rix]

19" yes
20mm axle yes

1cross????? nope....absolutley to weak.

What Merlin said, here is a properly laced 19x1.40 wheel to a Marzocchi DH Hub with a 20mm axle. 3X lace pattern.

 

[Jimboyr6]

Hey rix are those forks the marzocchi 380 c2r2
Are thay anygood?

 

[Rix]

Hey rix are those forks the marzocchi 380 c2r2
Are thay anygood?

Yes, and they are good, after they break in, which takes a while. They could benefit from a revalve and skf teflon impregnated seals though.