QSMOTOR,0.5-12kW Electric Hub Motor & Mid Drive Motor Manufacture China

[Silvitron]

Hello @QSMOTOR, Do you have any test results for the QS 205 3000W V3 50H 3T that could be used to prove the motor's characteristics in an official manner?

The style of report that I found in this thread so far is only useful for reference but is often missing clear indications of the model being tested or any indication that this information is officially released by QS Motors.

The attached results for example have no use outside an informative purpose.

 

[glyndwr]

Hi @QSMOTOR
I am wanting to buy a 5000w continuous 17" wheel hub motor for a electric motorcycle upgrade. I am wanting to acheive a max speed of 60mph. I will be using a 60v 45ah battery and a fardriver FD72450 controller.
Can you recommend a motor please, the price, and shipped into the UK please.
Thank you
glyndwr.

 

[Ciclon]

I ordered a Hairpin motor kit from Alan and everything is fine. Problem is it comes with a 08B sprocket for the jackshaft and it has been impossible for me to find sprocket for 08B chains here in the U.S. Does anyone know of a vendor that makes 08B sprockets for gokarts? I am specifically looking for one for the axle which as a 6x bolt patters in 5 1/4" with a 4 9/16 bore.

 

[amberwolf]

A quick google for "08B chain sprocket USA" finds these, if it's helpful:

08B Metric Roller Chain Sprockets

Purchase 08B chain sprockets at the best prices! We offer an extensive selection of metric roller chain sprockets available in different sizes for a variety of applications.

www.usarollerchain.com

ISO Metric 08B Roller Chain - 10ft Box

08B roller chain is made to ISO metric dimensions and British Standards. Our high-quality 08B chain is a top performing roller chain with an economical price point. Shop 08B roller chain now!

www.usarollerchain.com

I don't know anything else about them, though.

 

[Ciclon]

A quick google for "08B chain sprocket USA" finds these, if it's helpful:

08B Metric Roller Chain Sprockets

Purchase 08B chain sprockets at the best prices! We offer an extensive selection of metric roller chain sprockets available in different sizes for a variety of applications.

www.usarollerchain.com

ISO Metric 08B Roller Chain - 10ft Box

08B roller chain is made to ISO metric dimensions and British Standards. Our high-quality 08B chain is a top performing roller chain with an economical price point. Shop 08B roller chain now!

www.usarollerchain.com

I don't know anything else about them, though.

Yes I found them earlier. However, $300 minimum order . I only need 1.

 

[JRP3]

Have you tried McMaster-Carr?

 

[A-DamW]

I ordered a Hairpin motor kit from Alan and everything is fine. Problem is it comes with a 08B sprocket for the jackshaft and it has been impossible for me to find sprocket for 08B chains here in the U.S. Does anyone know of a vendor that makes 08B sprockets for gokarts? I am specifically looking for one for the axle which as a 6x bolt patters in 5 1/4" with a 4 9/16 bore.

Custom-Made Sprockets - ElectricScooterParts.com

Custom-made chain sprockets electric; scooters, bikes, bicycles, go-karts, beach wagons, and beach carts.

electricscooterparts.com

Also, what does the counter shaft look like?
I may be easier to find a counter shaft sprocket with a more common chain size.

 

[amberwolf]

Yes I found them earlier. However, $300 minimum order . I only need 1.

Ah, then this was very incomplete information:

it has been impossible for me to find sprocket for 08B chains here in the U.S.

as you did find those sprockets here in the U.S., but simply didn't want to spend that much money or bother to mention either of those things.

I think I'll wait to spend any more of my time to try to help you find a source until you have made a complete list of all of the places you have found and checked and a complete list of all of your exact requirements, budget, etc., so that I don't waste any of your time or mine with things you already know and/or have decided not to use.

 

[Ciclon]

So one can either change the jackshaft sprocket from the 08B the motor comes with to a standard chain size like 41/420 or change the axle sprocket to an 08B from the standard gokart chain/sprocket sizes which are 25/35 or even 40/41. I chose to change the rear sprocket to 08B but it will need machining.
This is what I bought in the 45 tooth version. It will require lathe work in the way of boring out and drilling a 6 bolt pattern in 5 1/4" diameter but I don't believe there is a better option at least in the U.S.

1/2" 08B , Motor Gear Sprocket 10 ~ 45 Teeth for Go Kart eScooter, Pitch: 12.7mm | eBay

Application scope: Can be used in machinery, aerospace, engineering machinery, CNC machine tools, and so on. Model: 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 45 Teeth.

www.ebay.com

 

[tobyw]

Hey all.
Qs8000w?
Fardriver nd721000B.

Any information about these would be great.
New Zealand