Kit for this Kiddy carrier reverse trike

[NeilP]

I stopped and talked to a lady today, who had the bike below. Her kids go in the front, it has Nexus 7 speed hub, that would be necessary to keep.
Front drive is not an option, well possible I suppose but not practical and easy to do.

Speed not required, but torque and power on the hills is what is needed.
Plenty of room under the front seat for battery pack. Going to have to be a ping or headway pack I think for ease of use.
I had thought of the StokeMonkey kits and adapt one to fit forward, but they seem to be out of production now.

I would not want to get involved in a full fabrication of a drive system myself, it would need to be something that is bolt on and go.

I would not imagine a friction drive would have enough torque for a system like this

Are there any reliable torque sensor systems for non hub motor drive bikes? or will it have to be a throttle?

 

[Stone Meadow]

Why can't a 24v 200-250 watt rear hub motor work? Add a pedal assist sensor and she'd be good to go...and even all legal-like.

 

[NeilP]

it has Nexus 7 speed hub, that would be necessary to keep.

She still wants to be able to have gears,

 

[Trackman417]

Well, does the motor have to be small? I was thinking more along the lines of a HT3525.... Looks sleek and it can have up to 7 gears as well. Are those 24 inch rims as well?

 

[NeilP]

OK...you probably do not know what a Nexus 7 speed hub is.

It is an internal gear hub, built in the hub of the rear wheel...fit a hub motor and you loose the 7 Speed hub..so back to a single speed bike..which she does not want..she wants to be able to pedal and use the electric for assistance, not just use total electric.

 

[Trackman417]

Oh, I was not thinking at all when I read that first post!
What about a cyclone kit? That would be perfect.

 

[NeilP]

Ah yes, they look useful

I was thinking Stoke Monkey or iI have since found eco speed..
i had heard of cyclone, but I had not thought of them today

 

[Trackman417]

Yeah cyclone would also cut don't on wiring. The lower poet models come with a controller built into one unit. However I forget how powerful the little controller motor combo is. I'm guessing the hub isn't going to handle much more than a couple hundred watts of power?

 

[NeilP]

Yes, 360 watt kit, built in controller, just add battery and throttle and you are done

Ok mounting will require brackets making but all relatively straight forward

 

[SamTexas]

NeilP, I know you said she wants gears, especially the nexus gear hub. But may be that's the problem. With a very high torque hub, like a 9C 2812, one speed is sufficient, especially for Europe where the ebike limit is only 25kmh. Just a thought.

 

[flyinmonkie]

You can get a hub motor that allows for a standard 6 or 7 speed freewheel to be attached. That way you have gears for the pedals as well. It won't be internal like the nexus, but you still have pedal gears.

For the cyclone, you will want to make a new mounting bracket anyway. The one supplied is crap. Your best bet if you are going that route is to contact Paco at http://www.cyclone-e-bikes.tw/index.php?type=top&arem=104 and order the just the motor instead of the whole kit. Then get a decent throttle and make the mounting bracket your self. If the shipping looks crazy on the site, just email Paco and ask for a quote on shipping.

The easiest to install and maintain will be a hub motor in the rear wheel. Ask in the general section about which hub motors you can put multi speed freewheels on. They will have a better idea over there.

Clay

 

[NeilP]

I have 4 various hub motors and have set up more, so finding a hub that will take a 7 speed is not an issue
But mounting a derrallieur, (there is no mount point on the bike at the moment as it has the Nexus), would be a pain, plus more cost to buy one, then make mount and align it.
Then would need new shifter, which is integrated with brake levers, so then non matching brake levers left and right, so that ends up as complete replacement of handle bar hardware. It all just becomes too much, to fit a messy external gear system that needs more maintanence

I realise the power of decent hub motors, I run a 5304 at 100 volt and 90 amps
So yes, a single speed with just hub motor would work, and get her up all hills with no real pedal input.....until the day she gets low on battery and can't pedal it as gearing too high with fixed

No, definetly has to be mid mount, and I think Cyclone would be the one, or the Eco cycle
Coupled with 20 30 or 40 Ah x 24 or 36 volt in front box

 

[NeilP]

than a couple hundred watts of power?

that should be all she needs, but would probably go with a 500 Kit and turn it down if that is possible, so we could up the speed/power if she needs it.


What I am wondering about the Cyclone, is how it drives...can it use the original front sprocket? or do we have to fit the extended crank and fit the second front 44 tooth or 36 drive sprocket on the LH side of the crank..or is it optional..either drive on LHS with extra length crank or just apply the motor and drive sprocket direct to the original chain on the RHS?

 

[Thud]

Neil,
Cool bike.
You will definatly want the freewheling cranks with a cyclone set up. Its a potential saftey problem allways having the pedals spinning while under power. (prolly safer on a trike than a standard bike if you wrap a shoelace on a pedal)

That frame down tube looks like a nice shape to attempt to fab some mountings to....Any experiance in composits? it's a perfect solution to contend with some of those shapes & not introduce some nasty stress points with U-bolts.

Using U-bolts on a aluminum bicycle frame(or any bicycle IMHO) is a mortal sin.

 

[NeilP]

Neil,
You will definatly want the freewheling cranks with a cyclone set up. Its a potential saftey problem allways having the pedals spinning while under power. (prolly safer on a trike than a standard bike if you wrap a shoelace on a pedal)

Ah yes of course, had not thought about it that way
So can this freewheel crank unit be fittted either side? it looks as if it can . It probably has a cartridge bottom bracket bearing though, so then you have to find bearing cups/holders for the crank..as they do not supply them..only the longer crank

That frame down tube looks like a nice shape to attempt to fab some mountings to....Any experiance in composits? it's a perfect solution to contend with some of those shapes & not introduce some nasty stress points with U-bolts.

Using U-bolts on a aluminum bicycle frame(or any bicycle IMHO) is a mortal sin.

Would not be using composites, or horrid u bolts either , probably make up some blocks of shaped alloy clamps.

 

[Thud]

There are wide cartridge bb available for all modern bikes & wide solutions available for any thing you may have.
regarding left & right side, they are typicly right side drive for ease of compatability with standard freewheel internals.

you can look at all the peices-parts here:
http://www.sickbikeparts.com/catalog/index.php?cPath=23&osCsid=ijldn80mljs90f1r0evjf9bp71
I think you have a grasp of what you want & how to do it.
Hope this helps.
T

 

[Dingo2024]

Hi Neil,

if you plan on going the cyclone route get in touch with eclipsebikes (they are the UK cyclone suppliers) I got my kit from them and also been to the guys house (about 40 mins from me) to sort a controller out....would highly recommend them

although for some reason the website seems down as I type this

http://www.eclipsebikes.com

Ian

edit; this is their ebay store / add currently

http://www.ebay.co.uk/itm/26-Seagull-Electric-Bike-8Fun-250-Watt-Ebike-NuVinci-N360-CVP-Hub-/270982232904?pt=UK_Bikes_GL&hash=item3f17ccbb48

 

[NeilP]

Thanks Ian, great info.

I'll try their e-bay contact, other wise could you maybe PM me with e-mail or phone numbers if you have them

Thanks

Neil

 

[Samd]

That's the snappiest looking bakfiets I've seen, can you find out the brand of it please NeilP?

This thread will be of interest - same prob I think.
http://www.endless-sphere.com/forums/viewtopic.php?f=3&t=39542

 

[StudEbiker]

As far as using a rear hub motor goes. It looks to me that where the chain tensioner is currently mounted, you could hang a derailleur from the same place. Surely you have some extra derailleurs lying around. The Cyclone will be loud, and if she throws a chain ever (likely) then she will get her hands dirty. I think I would try to fit a rear derailleur on it with a hub motor first and see how it goes.

 

[NeilP]

No chain tensioner on the bike in question..the one with the chain tensioner picture is just a random net one to show a Nexus Hub. I used a different bike pic to show the hub better.



Bike name; Trio Bike




This project is for a lady who I do not know, we stopped and started discussing bikes on the road, and she wanted to power this bike.
She gave me her e-mail and I have sent her mails with ideas etc, but so far she has not replied to me, so can't get more info about the bike till she gets back to me.

But I Googled it
http://www.triobike.co.uk/default.asp?clicked=379

check out the video on the dis-assembly page..the front basket/pushchair comes off and it converts back to a normal bike...amazing
http://www.triobike.co.uk/default.asp?clicked=447

 

[TopCat]

+1 for eclipsebikes. I got my 1200w cyclone motor from them a few months back. Good to deal with, hassle free.

Regards
Tom

 

[pelle242]

Maybe a friction drive?

 

[flyinmonkie]

I'm pretty sure you can get dérailleur hangers that clamp into the drop outs with the axle. I'm not sure if they work with horizontal drop outs though.

If you check out the website, they make an electric version. It has a hub motor and a dérailleur. She might be able to get the parts form them.

http://www.triobike.co.uk/default.asp?clicked=553

Clay

 

[Eclu Lardbut]

But I Googled it
http://www.triobike.co.uk/default.asp?clicked=379

check out the video on the dis-assembly page..the front basket/pushchair comes off and it converts back to a normal bike...amazing
http://www.triobike.co.uk/default.asp?clicked=447

Ach, they already do a motorised version, a snip at 4,500 pounds sterling. No wonder she's keen to see if it can be done cheaper.