Either that or look ahead and stop pedalling before you need to stop!!

So should I go for 36v250w, 48v250w, 36v350w, 48v350w, or 48v750w...

Has anyone tried any different models??

I think the 36v250w can only handle 15A, is this enough??

Ideally I want to build a brutish off-road beast!!! :-))

Either that or look ahead and stop pedalling before you need to stop!!

So should I go for 36v250w, 48v250w, 36v350w, 48v350w, or 48v750w...

Has anyone tried any different models??

I think the 36v250w can only handle 15A, is this enough??

Ideally I want to build a brutish off-road beast!!! :-))

 

Then I suggest you start another thread in the appropriate section.

Sorry, I thought this section was about the 8fun crank drive kit!!

Sorry, I thought this section was about the 8fun crank drive kit!!

 

Hi st1vo,

 

this section is for:

 

 

Forum: Electric Bicycles

 

General discussion about electric bikes, e-bikes, pedelecs, pedal-assist. The current UK law states maximum power output of 200 watts (250w Europe, yes we are in Europe!) and a motor that should not propel the e-bike past 15mph. Please ensure all conversations respect the current (albeit slightly foggy) legislation.

 

If you want to discuss off road bikes with or without 8fun crank drive kits then use this one:

 

 

Forum: UK off-road, S Pedelecs & overseas

 

Any conversations regarding use of electric bikes on private land, outside Europe and discussing motor propulsion beyond 15mph or maximum power outputs above 250w, please keep conversations in here.

 

I hope that helps.

What's the matter with you complaining whenever anybody types a number bigger thsn 250. He's asking if the 250w is enough. You should answer yes or no and justify your answer.

OK, I'll re-word my post...

Is the 36v250w version enough??!

I'm wondering if anyone has experience of the differing power options??

What's the matter with you complaining whenever anybody types a number bigger thsn 250. He's asking if the 250w is enough. You should answer yes or now and justify your answer.

 

Ideally I want to build a brutish off-road beast!!! :-))

Ideally I want to build a brutish off-road beast!!! :-))

Do you want to build a brutish beast with a 250w motor, or would you like me to recommend to you some even more brutish ones?

Just as well shut-down all the other sections & just have the Offroad one then.

 

Ho - Hum...

Do you want to build a brutish beast with a 250w motor, or would you like me to recommend to you some even more brutish ones?

 

I think I'd like to explore the more brutish options... but maybe not in this thread!!

Don't want to annoy anyone!!

I'd like a cool lcd display too showing everything I can think of!!

I think I'd like to explore the more brutish options... but maybe not in this thread!!

Don't want to annoy anyone!!

I'd like a cool lcd display too showing everything I can think of!!

 

Keep it on here the mainstream thread as some of us would like too see what you try or eventually buy,apart from the boring brigade who will probably die before they have lived,even flecc used to ride a 22mph electric bike they are great fun, in my opinion you get far more smiles per mile on a more powerful bike.

I

I'd like a cool lcd display too showing everything I can think of!!

The Cycle Analyst is pretty good, but you'd be doubling up on all the stuff on the 8Fun LCD. It not only gives all the electrical and battery info, you can use it to control parameters like maximum current/speed/temperature/etc, plus you can put a profile on the throttle response and do loads of other things.

 

The Speedict Mercury is also good for showing battery info. It also logs your journey via GPS, so you can see how much power/speed you had up your favourite hill. It transmits to an Android phone via bluetooth.

I think I'd like to explore the more brutish options... but maybe not in this thread!!

Don't want to annoy anyone!!

I'd like a cool lcd display too showing everything I can think of!!

 

Hi st1vo.

 

Just to reassure you that I am not annoyed by your posts.

 

As a new member I just wanted to advise you of new forum guidelines.

 

If you wish to pursue your own thread based on what you ideally want to achieve then the section mentioned would be the correct place to start it.

Fair enough... I've started my own thread on my build plan and would appreciate any input b4 I blow £750

Fair enough... I've started my own thread on my build plan and would appreciate any input b4 I blow £750

 

Many thanks, good luck with your quest.

It seems as if there still a lot of confusion over the different types of motor available due to a lack of information direct from the manufacturer.

8fun the European distributor has removed all reference to the product and there is only a compilation of broken information circulating around the web.

Missed this French video as the title was incorrect :

 

Moteur pédalier BDS01 adaptable sur vélo classique - YouTube

Italian Company has CNC'd a smaller 42T chain wheel for the BBS01 to help with off-road:

 

http://www.alcedoitalia.it/13818/nuova-corona-42t-cnc-per-bafang-centrale-bbs01/

Edited November 11, 201312 yr by shemozzle999

I'm a new member and, based on my interpretation of the advice I've had so far, am interested in converting my bike (photo attached) with a crank drive.

 

[ATTACH]7275.vB[/ATTACH]

 

I've not had the chance to try one yet but wondered what the forum thought about the 8Fun's power to get my 85Kg up our steep Yorkshire hills?

What's the best 48v frame mounted battery to go with the 750watt unit.

 

Sent from my GT-I9300 using Tapatalk

Hi we will be testing the new 750 watt motor soon with our 48 volt 15AH frame mount KUBE battery that has a 50A BMS

 

But will only be selling the complete Kit £1495

 

Frank

Edited November 11, 201312 yr by banbury frank

I'm a new member and, based on my interpretation of the advice I've had so far, am interested in converting my bike (photo attached) with a crank drive.

 

[ATTACH=CONFIG]7275[/ATTACH]

 

I've not had the chance to try one yet but wondered what the forum thought about the 8Fun's power to get my 85Kg up our steep Yorkshire hills?

 

Hi CoachMark, welcome to the forum.

 

The first consideration would be mechanical, would the motor be able to be physically assembled onto your bike without obstructing any existing cable runs. At present it is only offered with a 46T chain wheel and multi chain wheels cannot be used.

 

There are too many variants to consider when asking about power requirements, see the bicycle power calculator thread, to be able to give you a definite yes or no answer to your question.

 

There is a mechanical advantage to using this motor i.e. you feed the power through the chain and can change gear to accommodate varying inclines.

Hi CoachMark, welcome to the forum.

 

The first consideration would be mechanical, would the motor be able to be physically assembled onto your bike without obstructing any existing cable runs. At present it is only offered with a 46T chain wheel and multi chain wheels cannot be used.

 

There are too many variants to consider when asking about power requirements, see the bicycle power calculator thread, to be able to give you a definite yes or no answer to your question.

 

There is a mechanical advantage to using this motor i.e. you feed the power through the chain and can change gear to accommodate varying inclines.

 

Thanks Shemozzle999, I'll take a look at the power calculator thread this morning.

 

In terms of cable runs I think I'll be OK since it's a cross bike and all the cables run on top of the top tube, and I'll be removing the front mech completely because of the single chain ring. The cable for the rear mech runs down seat stay.

 

I was running a 50/34 compact chainset at the front and 11/23 cassette on the rear but since I suffered a medical problem last year (I have to keep my blood pressure as low as possible) this gearing would be far too hard for me now any way (hence the investigation into a Pedelec). I was thinking of putting a 11/34 cassette on and this should be OK with the 46T chain ring.

Sounds OK.

 

I can only think of one other problem, to overcome any motor run on you would need to fit these 2 wire switches at the wheel cable ends to retain your existing brakes. They would need to be spliced onto the cable form supplied.

 

Aliexpress.com : Buy electric bike brake sensor popular in Holland, Germany from Reliable sensor car suppliers on Golden Way Cycle (Hangzhou) Co., Ltd.

 

As for a battery solution perhaps this could meet your needs - 50 cell 36v,13Ah.

 

Aliexpress.com : Buy Newest 36v 13ah bottle battery LiNiCoMn for electric bike / e bike bottle battery from Reliable bottle cutters for sale suppliers on nne-bikes

Sounds OK.

 

I can only think of one other problem, to overcome any motor run on you would need to fit these 2 wire switches at the wheel cable ends to retain your existing brakes. They would need to be spliced onto the cable form supplied.

 

Aliexpress.com : Buy electric bike brake sensor popular in Holland, Germany from Reliable sensor car suppliers on Golden Way Cycle (Hangzhou) Co., Ltd.

 

As for a battery solution perhaps this could meet your needs - 50 cell 36v,13Ah.

 

Aliexpress.com : Buy Newest 36v 13ah bottle battery LiNiCoMn for electric bike / e bike bottle battery from Reliable bottle cutters for sale suppliers on nne-bikes

 

I've tried the power calc software and if I used it correctly says that I'd need to put in c300W at the pedals to climb a 10% gradient at 6mph; I don't know how much power I could comfortably apply myself though, although I would have thought that it would be at least 50W. Whilst useful these calculators are no substitute for trying a bike. I plan to hire a rear hub drive bike in a couple of weeks to see how I get on with that - trouble is that crank drives aren't as that common so probably would have to travel quite a way from where I live in Bradford to try a crank drive.

 

Is there much motor over-run? Thought of trying any splicing myself is pretty scary! [i'm OK with the mechanics but never been good with electrics or plumbing for that matter :-)]