Search found 142 matches

by tylerwatts
Mar 09 2021 11:25am
Forum: Motor Technology
Topic: QS 3000w midmotor
Replies: 640
Views: 88508

Re: QS 3000w midmotor

You don't need any special tool to remove the pulley just have a rubber mallet and a triangular shaped shim to insert between the pulley and the motor flange. With a few small blows of the mallet the pulley will come out. If you damage the seal it is easily replaced. The reference is written on it,...
by tylerwatts
Feb 08 2021 8:48am
Forum: EScooters/EMotorcycles
Topic: New conversion project for Piaggio Zip 50
Replies: 33
Views: 4358

Re: New conversion project for Piaggio Zip 50

I'm not Votol expert. But the regen should be limited proportional to battery voltage yes. I don't know if the controller or BMS manage this. Regarding coasting, without regen the motor won't produce current because it has no circuit to flow through. The controller IGTs are 'open'. So it should be s...
by tylerwatts
Feb 03 2021 6:35pm
Forum: EScooters/EMotorcycles
Topic: New conversion project for Piaggio Zip 50
Replies: 33
Views: 4358

Re: New conversion project for Piaggio Zip 50

Gianluca I am very sorry for you, that was a good looking machine. Must have been some fault in the controller if you did not change settings and the wiring was correct. I assume it was since the scooter ran for some time before it failed. Hopefully you can be refunded and I encourage you to try aga...
by tylerwatts
Feb 01 2021 3:17pm
Forum: EScooters/EMotorcycles
Topic: New conversion project for Piaggio Zip 50
Replies: 33
Views: 4358

Re: New conversion project for Piaggio Zip 50

Wow that sounds very alarming, sorry to hear it. Sounds like a major failure in the controller that caused a short circuit and when you re-closed the contactor it continued and melted the controller then overheated the battery. That is very unusual. I would complain to the vendor. They should issue ...
by tylerwatts
Dec 24 2020 7:58pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KTM 200 exc goes electric
Replies: 234
Views: 41506

Re: KTM 200 exc goes electric

I agree larsb. And bjork. The western offerings are like we wish but more costly. Curtis and Sevcon are good examples. Time will change things. Also modifying recycled OEM parts will develop like we already see, as availability increases.

Cheers
Tyler


by tylerwatts
Dec 24 2020 1:58pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KTM 200 exc goes electric
Replies: 234
Views: 41506

Re: KTM 200 exc goes electric

I agree but it isn't an expectation that electric drive systems are offered like this to consumers so this isn't an adopted option for many. It would be great if we could simply adjust the controllers. It also boils down to liability and warranty and the OEM is not willing to honour their product wa...
by tylerwatts
Dec 24 2020 12:45pm
Forum: EScooters/EMotorcycles
Topic: FINALLY DONE! 1970 Vespa 50s electrification project
Replies: 132
Views: 21481

Re: 1970 Vespa 50s electrification project

The build is looking good. Did you consider making polyurethane bushes for the swingarm for some vibration damping? Those seem ideal thickess for PU.

Cheers
Tyler

by tylerwatts
Dec 19 2020 5:40am
Forum: Large EV General Discussion
Topic: Electric Quad ATV
Replies: 3
Views: 1199

Re: Electric Quad ATV

That motor and controller can easily handle 9kw continuous, proven by countless others in the forum. So don't worry about that. Make sure your quad can handle the torque it'll throw out or you'll have to tune it to less torque to protect your drivetrain and safety.

Cheers
Tyler

by tylerwatts
Dec 10 2020 7:02am
Forum: Items for Sale - New
Topic: N.E.S.E. the no solder module
Replies: 477
Views: 83116

Re: N.E.S.E. the no solder module 21% OFF WINTER SALE

@klemkas are those packs the same size? 7s7p. Or are there more cells in the Vruzend? I always worried the NESE aren't as dense but these look great! Winter sale is tempting [emoji1]

Cheers
Tyler


by tylerwatts
Sep 28 2020 6:05pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KTM 200 exc goes electric
Replies: 234
Views: 41506

Re: KTM 200 exc goes electric

Excellent progress bjork. When will you take some videos of the bike in action? We're dying to see it!

Cheers
Tyler

by tylerwatts
Sep 27 2020 9:34am
Forum: EScooters/EMotorcycles
Topic: New conversion project for Piaggio Zip 50
Replies: 33
Views: 4358

Re: New conversion project for Piaggio Zip 50

That sounds great, just like I plan for my dragster. Please share the design when you know it.

Cheers
Tyler

by tylerwatts
Jul 01 2020 7:05pm
Forum: EScooter/EMotorcycle Build Threads
Topic: Ninja 250 "Clone" Made in China
Replies: 73
Views: 23127

Re: Ninja 250 "Clone" Made in China

Very nice progress and that battery box and aerogel is impressive! Nice job.

Cheers
Tyler

by tylerwatts
Jul 01 2020 6:01pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KTM 200 exc goes electric
Replies: 234
Views: 41506

Re: KTM 200 exc goes electric

Very nice progress Bjork and I'm pleased the Votol is working well.

Cheers
Tyler

by tylerwatts
Jun 20 2020 6:50pm
Forum: EScooters/EMotorcycles
Topic: Rieju 50cc conversion
Replies: 236
Views: 37159

Re: Rieju 50cc conversion

larsb that looks great, nice work! Don't regret not getting the bike ready for the summer riding! Get it wired ;)

Cheers
Tyler

by tylerwatts
Jun 08 2020 5:44pm
Forum: EScooters/EMotorcycles
Topic: Rieju 50cc conversion
Replies: 236
Views: 37159

Re: Rieju 50cc conversion

Really nice work on the box and fender!

Cheers
Tyler

by tylerwatts
May 22 2020 2:43am
Forum: EBike Non-hub Motor Drives
Topic: LR Big Block Motoped
Replies: 71
Views: 5830

Re: LR Big Block Motoped

.....A smaller wheel is like lower gearing. It reduces top speed and increases torque...... Not intending to be pedantic or critical, but that comment is misleading..(as im sure you are aware ) Reducing the wheel diameter will reduce the speed, but does not change the “torque” (Nm) at the wheel, it...
by tylerwatts
May 20 2020 5:48pm
Forum: EScooters/EMotorcycles
Topic: Rieju 50cc conversion
Replies: 236
Views: 37159

Re: Rieju 50cc conversion

That is looking great larsb. The new wheels are very cool too! And performance sounds excellent. Good thing the brakes are bigger! One thing I notice, your battery is mounted very high and there looks like plenty space to stack them vertically inside the frame, do they not fit? Even parallel to the ...
by tylerwatts
May 19 2020 5:45pm
Forum: EScooters/EMotorcycles
Topic: Rieju 50cc conversion
Replies: 236
Views: 37159

Re: Rieju 50cc conversion

Wow that looks promising! I'm sure the qs motor will safely do those rpm but just be careful how many amps you are using at that voltage. Good to think about it as kVA max so more V means less A for given max kVA otherwise insulation starts failing because of heat and wear and high voltage spikes qu...
by tylerwatts
May 19 2020 4:55pm
Forum: EScooters/EMotorcycles
Topic: Homemade light trial mid drive outrunner
Replies: 17
Views: 1400

Re: Homemade light trial mid drive outrunner

This looks very well thought out lefortbron and a very functional Nd effective build. Nice work so far.

Cheers
Tyler

by tylerwatts
May 18 2020 3:08pm
Forum: EScooters/EMotorcycles
Topic: Rieju 50cc conversion
Replies: 236
Views: 37159

Re: Rieju 50cc conversion

I thought you were just switching to chain drive Lars. Looks like a full rebuild is kicking off... Hope it goes well, bike will be great by the looks of it.

Cheers
Tyler

by tylerwatts
May 16 2020 3:57am
Forum: EScooters/EMotorcycles
Topic: New Project " help Please" Honda st1300 Conversion
Replies: 54
Views: 6403

Re: New Project " help Please" Honda st1300 Conversion

Hi Tony. No problem. This would give you more torque because the gearing is a multiplier. So if your ratio is 1.5 motor turns to 1 shaft turn, you get 1.5x the torque at the wheels. So better acceleration, climbing power etc. More likely to sustain motorway speeds as the power needed above 60 will b...
by tylerwatts
May 15 2020 3:59pm
Forum: EScooters/EMotorcycles
Topic: New Project " help Please" Honda st1300 Conversion
Replies: 54
Views: 6403

Re: New Project " help Please" Honda st1300 Conversion

Hi Tony I'm sorry I've taken so long to respond, and my sketching is rubbish tonight, but here's the idea. Use a flat mount bearing mounted to a plate perpendicular to the drive shaft uj. Mount uj (or adapter shaft to uj) through bearing and mount pulley to other side. I'd use something off the shel...
by tylerwatts
May 14 2020 4:40am
Forum: EScooters/EMotorcycles
Topic: New Project " help Please" Honda st1300 Conversion
Replies: 54
Views: 6403

Re: New Project " help Please" Honda st1300 Conversion

Hi Tony There's an opportunity to have more space by mounting the motor below and behind the shaft output with a simple belt reduction between them. Really simple setup that can be part of the battery mount cage and save weight and cost also. Just food for thought that this wouldn't cost a lot and t...
by tylerwatts
May 13 2020 6:25pm
Forum: EScooters/EMotorcycles
Topic: New Project " help Please" Honda st1300 Conversion
Replies: 54
Views: 6403

Re: New Project " help Please" Honda st1300 Conversion

Hi guys , after quite a bit of digging on out forum I found : Final Drive: Enclosed shaft with integrated dampers, 2.833:1 Therefore I believe for every 2.833 turns of the input splined shaft , I should have one full revolution output of the wheel..... therefore if have up to 6000 turns of the inpu...
by tylerwatts
May 11 2020 7:31am
Forum: Motor Technology
Topic: Mid-drive IPM motor options?
Replies: 42
Views: 2923

Re: Mid-drive IPM motor options?

Thank you

Cheers
Tyler