surron bicycle with qs205 middrive

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bionicon   1 kW

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surron bicycle with qs205 middrive

Post by bionicon » Apr 08 2019 2:31pm

Hello, dont know if i am posting this in the right section, buts its complicated.
I was looking for a middrive and i liked alot the style of the surron, but this is a moped and not a bicycle, here in Belgium when driving into the woods a bicyle is more accepted then a moped. So i decide to modifie the surron frame to a bicycleframe, made a pedal chainsystem(that i actual can pedal) also i dont like the wining noice of a high rpm middrive i want the silent qs205(4T) as a middrive. Also made a new battery with q30 samsung cells in a 20S 16p configuration. For the controller i use a modified sabvoton 72150 (new fets and caps) and its set at 180dc and 400faze amps,also did make the most parts myself like the batterycover is made out of carbon.Just made my first ride in the woods with my qulbixfriends, i post a little video at the bottom of the page. Here are some pictures of the build:
mini_frame globaal.jpg
mini_frame 4.jpg
mini_last2.jpg
mini_last2.jpg (42.43 KiB) Viewed 2156 times
mini_last3.jpg
mini_kettingspanner.jpg
mini_kettingoverbrenging.jpg
mini_zadel 1.jpg
mini_zadel 1.jpg (42.52 KiB) Viewed 2156 times
mini_zadel2.jpg
mini_zadel2.jpg (36.66 KiB) Viewed 2156 times
mini_trappers.jpg
mini_batterijbox(1).jpg
mini_mal.jpg
mini_batterij.jpg
mini_fietske.jpg
mini_sabv2.jpg
mini_sabv1.jpg
mini_chinese spagetti.jpg
mini_screen.jpg
mini_al black.jpg
mini_ready to go.jpg
https://www.youtube.com/watch?v=5GPk5EB ... VaHVotL6Ag

OnlyEbay   1 µW

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Re: surron bicycle with qs205 middrive

Post by OnlyEbay » Apr 08 2019 2:41pm

EPIC :flame:

coleasterling   100 W

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Re: surron bicycle with qs205 middrive

Post by coleasterling » Apr 08 2019 2:52pm

Okay, that super cool...But I'm confused. Did you buy a surron and disassemble or were you able to buy the frame alone, or what?

bionicon   1 kW

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Re: surron bicycle with qs205 middrive

Post by bionicon » Apr 08 2019 2:58pm

Found somebody on alibaba tat sells a frame only, not that i recommend that salesman

bionicon   1 kW

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Re: surron bicycle with qs205 middrive

Post by bionicon » Apr 08 2019 3:05pm

i had mine from alibaba but te salesman was a pain in the ass :?

markz   100 GW

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Re: surron bicycle with qs205 middrive

Post by markz » Apr 08 2019 6:39pm

I hope the build quality is good and the welds hold up!

Grantmac   1 kW

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Re: surron bicycle with qs205 middrive

Post by Grantmac » Apr 08 2019 7:05pm

What was the frame cost?

bionicon   1 kW

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Re: surron bicycle with qs205 middrive

Post by bionicon » Apr 09 2019 12:17am

the frame starts at 800usd but ended at almost 1500usd deliverd at home because the salesman came always wit some extra's :(

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fechter   100 GW

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Re: surron bicycle with qs205 middrive

Post by fechter » Apr 09 2019 10:35am

Wow, that's really different. The pedal setup looks way, way better than the Sur-ron pedal kit.
"One test is worth a thousand opinions"

Baron   100 W

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Re: surron bicycle with qs205 middrive

Post by Baron » Apr 09 2019 6:02pm

Looks sweet, the pedals and motor look a little close to the ground tho. Do you mind sharing the alibaba link to the frame you bought?

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efMX Trials Electric Freeride   100 kW

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Re: surron bicycle with qs205 middrive

Post by efMX Trials Electric Freeride » Apr 09 2019 6:12pm

Baron wrote:
Apr 09 2019 6:02pm
Looks sweet, the pedals and motor look a little close to the ground tho. Do you mind sharing the alibaba link to the frame you bought?
you can get the surron frame kits now from Aebikes.com .. a trusted surron dealer..
some ride & sk8 videos:
metacafe.com/channels/NATAS666DAMIEN
http://www.youtube.com/natas666damien
i have nothing for sale.. :)

bionicon   1 kW

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Re: surron bicycle with qs205 middrive

Post by bionicon » Apr 10 2019 5:15am

Yes i think also aebikes is the best supplier for the frame , i dont want that someone gets the same miserie i have got with the chinees salesman.
I have ordered a shorter crankset already noticed it also on the first trip.

benjamin84   100 W

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Re: surron bicycle with qs205 middrive

Post by benjamin84 » Apr 10 2019 5:58am

Wow, really cool project! Totally support the choice of QS205 over the high RPM engine from the regular Sur-Ron. Looks really cool with that frame, amazing work.

Edit: And the video made me seriously envious, we still have too much snow in Norway to go out riding in the forest!

2old   100 kW

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Re: surron bicycle with qs205 middrive

Post by 2old » Apr 10 2019 11:20am

Excellent design and execution.

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Re: surron bicycle with qs205 middrive

Post by croydon » Apr 10 2019 12:59pm

also upgraded the sabvoton 72150 with stronger fets end stronger capasitors i call it franckenstein upgrade :D .

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icherouveim   1 kW

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Re: surron bicycle with qs205 middrive

Post by icherouveim » Apr 13 2019 4:47am

I have just to say WoW! This is the ultimate project!

From what I can hear in the video it should be much quieter now!
(I couldn't understand what you were saying with your friends because you speak a foreign language).

What is the top speed now?
Does the motor get warm ?
What is the front & rear sprockets ratio ?
I can guess the torque is not bad even that the ratio seems to be small.

bionicon   1 kW

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Re: surron bicycle with qs205 middrive

Post by bionicon » Apr 13 2019 1:40pm

its very quiet almost nothing just a little chainnoice. The topspeed is arround 80km/u( with field wakening) Front sprocket is 17 t rear 25t so the torque is fun wheely on trottlecommand. Never had the motor to hot. Its a really fun machine.( the language is dutch we are a group of bikenerds from flanders😀)

bionicon   1 kW

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Re: surron bicycle with qs205 middrive

Post by bionicon » Apr 15 2019 3:35pm

here is a video from last trip near Brussels,my bike comes shortly in the picture, but it gives a good impression of the speed we mostly driving :D
https://www.youtube.com/watch?v=4zomYep ... YlFt0q0rtE

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icherouveim   1 kW

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Re: surron bicycle with qs205 middrive

Post by icherouveim » Apr 16 2019 5:23am

Very Very beautiful trail in the forest with lakes and everything, it looks like a dream!
Why your friend with the NYX frame felt down?
Is it because the ebike is overpowered more than 15.000W?
Is he a new rider ? Is the geometry of the frame wrong? Small wheel at the back and big at the front maybe?
The guy at the front with the camera goes very fast in the forest, it looks like 60-70 km / h !!!

bionicon   1 kW

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Re: surron bicycle with qs205 middrive

Post by bionicon » Apr 16 2019 8:00am

we all go that fast :D the guy on the nyx just slips that happens time to time this has nothing to do with the frame :roll:

larsb   100 kW

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Re: surron bicycle with qs205 middrive

Post by larsb » Jul 28 2019 11:37am

How did i miss this :D great work!
What happened to the QS 3000w mid?
What's the weight of the frame kit?
Ride on :D

j bjork   100 W

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Re: surron bicycle with qs205 middrive

Post by j bjork » Jul 28 2019 12:52pm

Really nice :thumb:
If you are using it like a middrive, why not the 3T or 3T-?

flat tire   1 MW

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Re: surron bicycle with qs205 middrive

Post by flat tire » Jul 28 2019 2:05pm

It looks better than a stock sur-ron. Nice job. People don't look too hard when you ride by?

bionicon   1 kW

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Re: surron bicycle with qs205 middrive

Post by bionicon » Jul 29 2019 9:31am

larsb wrote:
Jul 28 2019 11:37am
How did i miss this :D great work!
What happened to the QS 3000w mid?
What's the weight of the frame kit?
The 3000mid is still on the senda, just needs new controller,just keep it as a spare-drive :wink:
the bike complete weight arround 65 kilo's didn't weight the frame alone.
flat tire wrote:
Jul 28 2019 2:05pm
It looks better than a stock sur-ron. Nice job. People don't look too hard when you ride by?
We mostly drive at mtb tracks in the forrest, sure people look when we ride by, they never seen a "bicycle like that :shock: ,but thats the same with the qulbix,and nyx frame's :roll:
j bjork wrote:
Jul 28 2019 12:52pm
Really nice :thumb:
If you are using it like a middrive, why not the 3T or 3T-?
I like the torque of the 4t ,now i have a 14tooth in the front and a 25 rear so its arround 1.8 on 1. Maybe next year i will rebuild it then i would use a 5t with a 30s battery for even more torque :D

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Re: surron bicycle with qs205 middrive

Post by Tommm » Jul 29 2019 11:14am

My friend, the noise comes from the square wave controller and the chain drive.
If you use chain drive from your hub, it will be louder and heavier than a belt drive sur ron.

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