Has anyone dealt with wimbikes ?

[Deus]

http://www.wimbikes.co.uk/index.html

 

[martin@onbike]

The motor alone appears to weigh 11kg.

 

[pn_day]

Direct drive cromotor. Are these not popular on endless sphere? Not sure how road legal a 6kW motor is though!
Ebikes.ca also do cromotor and 9c if direct drive is your thing.

Seems expensive but maybe once you take import duty in to account it is not so far from other suppliers?

 

[Deus]

It sure looks powerful some of the specs for range look very good ill have a look on Endless Sphere thx

 

[WIMBIKES]

Hi Daniel here from wimbikes,
we are parts suppliers and builders of electric vehicles mainly bikes but have quads trikes buggies atv and cars in future projects.
We offer guidance advice to everyone we don't only suggest the products we sell and can suggest solutions, if struggling or want a new set of eyes to look at problem can bring to us to solve.
Our range is limited at moment, based around first few commissions for high powered hub bikes heavy hub yes but zelena vozila products handle high power without failure or overheating and rated to run levels required for customers briefs we build to last everything works at levels required until power gone we don't claim it's lightest we claim it's the most powerful hub motor designed to be used in a bicycle frame.and haven't found anything that pulls as hard for as long yet in hubs.
Range is expanding and new lines are been added such as crystalyte full range grin products kelly,and many many more,have few own products in development.all stocked in UK with UK aftercare and support.

We build bikes on commission basis for people who don't have confidence or competence to do so them selfs for a modest price we never charge for advice and often direct customers down lower powered routes. We sell parts as parts, kits or can build custom enclosures and cnc work and return turn key bike with charge systems. Customer chooses parts or can supply own. We build to the customers brief not to the law, we inform customers of the law and build bikes to be used off road if too powerful to be classed as road legal, if wanting a fully road legal bike and want lower powered components this can be done. The briefs we have had so far for is for high powered ebikes why our range based around high powered components first.we have a "wim blade" in manufacture stage that is road legal 200 mile range race style bike.
and also a cruiser style in drawing stages.
Also have high powered mammoth designed to be lightweight motorcycles for private land or the many electric bike parks opening around the country. So can have power and thrill of motor cross closer to residential areas without noise pollution.
http://www.warringtonguardian.co.uk/news/11227848.Get_on_your_bike_at_new_Preston_Brook_bike_centre/

We plan to offer both road legal and off road turn key bikes in future but for now on commission basis and sell prebuilt 1 off bikes / prototypes every now and again. And we plan to stock other manufacturers bikes later down line when shop is finished and open fully.

we can build anything that you want to be build if your struggling to build it yourself.we also repair or can upgrade any products in EV area. Again our unit is under construction as business new and still getting up and running.we are hear and trading working around the clock in all areas.can only take on 2 commissions / repairs at a time and already have waiting list we are taking on more staff soon so can increase work load. Everything free p&p to UK


If ever need us we are here.
Www.wimbikes.co.uk
Electrically we can do anything!
WIMBIKES LTD
A Official UK resellers of zelena vozila products (cromotor, greyborg)
A Official UK resellers of Grin technologies (ebikes.ca)
Many more to come, website under constant construction and due for attention after first commissions complete
Thanks for taking time to read and if you did can extend a £5 discount for any1 quoting pedelecs.co.uk on orders over £50 through our website,just add in message of PayPal and will be issued a £5 refund on delivery

 

[Deus]

I got a fast and detailed response to my enquiry from Wimbikes they seem a very capable outfit

 

[shemozzle999]

Welcome to the forum - Excellent thread - and posted in the correct section too

 

[bmc]

Ordered a Grin tech torque arm from this guy on ebay and received this message :-

"Thanks for your order item will be posted on monday to arrive tuesday. If ever need any help or advice with your ebike build don't hesitate to ask we are hereDanielWww.wimbikes.co.ukElectrically we can do anything "

Good communication and certainly trying on the customer service side of the business.

And it did arrive on Tuesday and is a quality piece of kit.

Bill

 

[Deleted member 4366]

I hope it has the right slot for your motor. You need 10 x 12mm for Bafangs, Cutes, MXUS, etc. Ezee, MAC and most USA motors have 10 x 14mm. I wouldn't advise using a 10 x 14 with a 10 x 12 motor. I've seen two twist out- both were different makes.

 

[halfer]

Hmm, the website could do with some pictures! Can't see any on the complete bikes page, nor the photos/videos page...

 

[WIMBIKES]

Thanks for reviews we aim to please.
After trying a lot of torque arms a lot fail these where the best quality we found are thicker gauge than some others used we found online and highest quality steel in this design and style found these to be the strongest, so stocked this line from grin v3 and v4 on next order we have samples testing but a lot of time going into custom builds for customers.

Regards to the 10 x 14 torque arms Using with 10 x 12 hubs mechanically speaking if flats are in good condition and true 10 then the torque is applied to the flats most at opposite ends of flat from direction of motor. So the lack of gap wouldn't improve strength if was square and not round where gap is then would be different but because round butting the round edge to metal wouldn't gain strength to spinning out, i don't believe the gap would decrease the spin out resistance of the TA this lies with the quality of the steel used thickness of plate and width of surrounding metal if the flats deform on the arm to allow spin then the gap would be a insignificant factor in reality the difference in strength would be minimal. Meaning if it span with the gap it would of still spun without it. If worn axels from previous wear / slips before TA? so the spin out effectiveness is equal on both with and without gap.
The free space would allow lateral movement meaning if was using regen and axel bolts not nice and tight to not allow lateral movement in rough off road or high power setups with regen if was sliding up and down in that would transfer the initial stress back to the dropouts particularly if using single side TA, keeping bolts tight checking regular would prevent this.
If upping power to high levels then would use on both sides to be safe stop axel twisting and lifting out on opposite side, or forks snapping dropouts.
There is no substitute for 1 piece Solid TA fixed to frame built for the hub.but these are best we have come across so far we don't name and shame but tried 4 different suppliers grin wasn't cheapest but was highest quality steel and best cut flats.if upping power we are making large range of 1 piece TA for pacific makes and models of forks and frames. As have use of a cnc machine everything we make will list on site. next month or so have our own line of products launching including Torque solid arms 235mm/245mm/255mm brake discs and adapters.anyone wanting torque arms for there forks and frames will start taking in next month as long as cover postage can make custom arms for exact hub and frame / fork if haven't already made them then add to inventory.
If can get good quality 10x12 TA for 10x12 hub this is way to go put right size nut on right size bot but sacrificing quality of steel and precision cutting for losing gap then like swapping the nut for plastic nut quality of steel is main factor.to reiterate flats that is doing work.you can't hold a round surface the gap doesn't change spin out resistance.
Daniel
Wimbikes

 

[WIMBIKES]

Hmm, the website could do with some pictures! Can't see any on the complete bikes page, nor the photos/videos page...

Website be updated with pictures and in detail wright ups we have so much work in we are snapping everything then be working on site more. Are changes and progress been made on site daily buy holding back a lot of content till builds leave shop customers first to see there commissions only a week away from first 2 going out. Our Borg build been put on hold till completed builds.we are doing as much as can are taking on more staff and growing as fast as we can and trying to get as much done as possible we are new business and were working as hard as we can not enough hours in the day hence time of post we are working around the clock bear with us

 

[Deleted member 4366]

Regards to the 10 x 14 torque arms Using with 10 x 12 hubs mechanically speaking if flats are in good condition and true 10 then the torque is applied to the flats most at opposite ends of flat from direction of motor. So the lack of gap wouldn't improve strength if was square and not round where gap is then would be different but because round butting the round edge to metal wouldn't gain strength to spinning out, i don't believe the gap would decrease the spin out resistance of the TA this lies with the quality of the steel used thickness of plate and width of surrounding metal if the flats deform on the arm to allow spin then the gap would be a insignificant factor in reality the difference in strength would be minimal. Meaning if it span with the gap it would of still spun without it. If worn axels from previous wear / slips before TA? so the spin out effectiveness is equal on both with and without gap.

Looks like you'll be learning the hard way, like myself and others did!

 

[WIMBIKES]

Looks like you'll be learning the hard way, like myself and others did!

I have destroyed many arms I've had some fron San Francisco, some from china, some uk, some Russia tried all I could find I don't doubt your hub span or even that it cut up your torque arm for instance San Francisco was good upto 5000watts but second hit regen clink rewire even pulled a hall leg out of a 3525 when span wire. Tried 2 and 3 even did 4 which worked didn't spin but with hard regen rocked enough to lift out of drop outs but not spin don't know how many miles done but was 10mm away from dropouts these were not grin in picture was 1 of many we tested.
Ran 9kw for short burst with that setup other side has 2 also.

Grin These where the best we found and we all agreed as a 2 piece torque arm these had widest dia metal took the most pressure before bending (to determine quality and strength of metal)and had the closest cut eyelets if notice on warp frames slots are long and we don't use torque arms on this frame as is strengthen high grade steel and flats doing the work have gap on both sides with motor

Now I have run peaks of 18kw with gaps either side and never had a problem wheat over ponderosa 3 peaks up roughest terrain destroyed a tyre in hours to nothing but never even consider torque arms as flats are strong.the screws pull flats down hard as flats hold the hub the hubs have gaps both in front and behind the flats being pulled down on flats helps why the cut is important.



Here is one of our high power custom builds we are finishing this week.notice again the gap in front and behind bolt have tested 10kw and again weld a strengthen steal flat slot and don't give a second thought to it after done tried and tested not guessing this thick plate strong enough to hold without bolts bolts there to hold wheel in place not to stop spin as such. It's the flats doing the work if hole warps shape then steel to mild, a good torque arm will cut when it goes not bend.
A 2 piece torque arm is a compromise good up to a degree but if running beyond 3,5kw then double up. If running really high power then can have custom arms made up for the price of going through 2 torque arms made in steel bolting to frame solid.
But again just to state having a gap does nothing to the spin retention of the steel on grin torque arms at least as the strength in the metal and gauge of plate is the determining factor I can agree in thinner torque arms as I suspects when it failed the hole stretched so it span? If this is so the metal must have been low grade as a good grade would cut round. As hub shaft is round with 2 flats when cuts opposite ends of the flat turn into the metal cutting away from the round edge the round edge isn't actually in contact as without the flats it would spin why there are flats. So at point of slip would cut down and up in opposite corner the grin don't stretch of deform they are thick if fail will cut the metal not stretch the hole. Again on some of 2mm thick arms tested warped in this way but grade and thickness is determine factor not gap around flat, on 2mm plate gap would make a difference as would help stop hole stretching with milder steel. But not for long. If could draw out better explain haha imagine your hub in a perfect hole if cut metal it's in round it's only the flats cut away as side are already round during the movement there is no friction on the round surface like a washer.

If one of arms fails from running power under say 3kw peaks of 5kw and deforms the metal I will personally fabricate a solid 1 piece arm for you if running silly KWs then already spending money on cells and controllers ect just invest 20 to 60 on good custom made arms. If running high power should be pushing from rear wheel as can't use all the power get slip losses from front. Against don't doubt yours failed but where they grin? Metal isn't metal you see and thickness every mm counts for a lot.
Hope the further explains my reasoning not all are same even if same shape the type of steel the thickness and how cut lazer or punched. Can't compare flaws from 1 plate and assume same floors exists in other products these are perfect for there intended use front mount motors if running enough power through the front to brake a grin torque arm I will build 1 for forks for you.if running high power then plan ahead use 1 on each side why hope 1 will do when 2 surely will. If need any more than that on front then running crazy power and if for whatever reason your doing this to front wheel. Ours is not to reason why. But would advise move power to back if not wanting to, then let us fab you a good solid arm
Speak soon all sorry for going on.
Just wanted to clarify 2 years R and D we have been there many times we have melted many hubs cooked through full strips of Honeywell halls popped countless fets and popped a few capacitors and burned out many contacts switches and wires. We test at recommended then slightly more then till it breaks.we are testing modding and testing and have many products to come if feel good enough quality and fit for purpose we sell if doesn't meet criteria we don't we stand behind the grin products we sell and reiterate I have had just as many 10x12 TA bend when up the amps.the grin out held the 10x12 we found as find other products if out perform current range will look to ad to range.