Woosh Carrera crossfire2 conversion

[Pentozoom]

Hello. I have a crossfire 2 which I am looking at fitting a Woosh geared hub kit. Can I get some advice as to which kit from the group please? Would like to go for rear geared hub with 17ah battery. TIA

 

[Woosh]

hi,
the Crossfire 2 is straightforward to convert, you can use one of these 4 kits:

1. XF07 front wheel conversion: easy to fit, low cost, lightweight.
https://wooshbikes.co.uk/cart/#/product/uid-192-xf07kit-13ah/xf07-front-hub-kit-with-13ah-battery

2. XF08C rear wheel conversion: takes a bit longer to fit, better traction, popular choice for commuting. Perfect all rounder.
https://wooshbikes.co.uk/cart/#/product/uid-121-xf08c-13ah/xf08c-rear-hub-kit-with-13ah-battery

3. BBS01B middle motor : easy to fit, expensive but incredibly flexible for all sort of rides.
https://wooshbikes.co.uk/cart/#/product/uid-164-bbs01-13ah/bbs01b-cd-kit-with-13ah-36v-hl-battery

4. 48V TSDZ2 middle motor: a bit fiddlier to fit on the Crossfire 2, you will need to move the gear cables that run under the bottom bracket to over the bottom bracket with new outercables, we can give you the outercables but it still take time to fit. Other than that, the TSDZ2 is also very flexible and has the highest performance of the 4.
https://wooshbikes.co.uk/cart/#/product/uid-207-tsdz2-12ah/tsdz2-cd-kit-48v-12ah

The best choice would depend on your weight, annual mileage, where you live.

 

[Pentozoom]

hi,
the Crossfire 2 is straightforward to convert, you can use one of these 4 kits:

1. XF07 front wheel conversion: easy to fit, low cost, lightweight.
https://wooshbikes.co.uk/cart/#/product/uid-192-xf07kit-13ah/xf07-front-hub-kit-with-13ah-battery

2. XF08C rear wheel conversion: takes a bit longer to fit, better traction, popular choice for commuting. Perfect all rounder.
https://wooshbikes.co.uk/cart/#/product/uid-121-xf08c-13ah/xf08c-rear-hub-kit-with-13ah-battery

3. BBS01B middle motor : easy to fit, expensive but incredibly flexible for all sort of rides.
https://wooshbikes.co.uk/cart/#/product/uid-164-bbs01-13ah/bbs01b-cd-kit-with-13ah-36v-hl-battery

4. 48V TSDZ2 middle motor: a bit fiddlier to fit on the Crossfire 2, you will need to move the gear cables that run under the bottom bracket to over the bottom bracket with new outercables, we can give you the outercables but it still take time to fit. Other than that, the TSDZ2 is also very flexible and has the highest performance of the 4.
https://wooshbikes.co.uk/cart/#/product/uid-207-tsdz2-12ah/tsdz2-cd-kit-48v-12ah

The best choice would depend on your weight, annual mileage, where you live.

Thanks for the reply. And from Woosh too! Awsome. I was looking at the xf08 kit but am very open to options. I have only ever ridden a 2019 carrera vulcan e bike for a test ride and was impressed so anything better than that would be good. I like the idea of a geared motor over a direct drive as I believe it is easier to pedel when not assisting? But with a geared motor spinning faster does it drain the battery quicker or is at more efficient as it as spinning more freely?.. I live in cornwall on the south coast with lots of hills and clay country trails. I would like up to 50mile+ range with plenty of assist as I am not as fit as I was. 50 yr old and 13 stone. I can still jump and bunny hop my fatbike though so im not that unfit!.. My idea is to build a crossfire better than the halfords version with more range and better components. My only concern is the kits have a pedal sensor and the halfords spec one has a torque drive. I have tried to research the differences and benefits of each and am still a bit confused on the issue.?. Anyway if any of this has helped in you helping me make the right choice then i've not sat here typing with 2 fingers for 15 mins for nothing.. Cheers.

 

[sjpt]

A geared motor will be more efficient than a direct drive. Direct drive are good at speed and price, but bad at most other things, especially weight, efficiency and hills.

Even so, you will be lucky to get 50+ range in a hilly area. Check out https://www.bosch-ebike.com/en/service/range-assistant/. Even though for Bosch motors and batteries it gives a very good idea for others with a little interpretation; and also gives a good idea of how much impact conditions, hills, assistance level and so on have on range. You will easily get a figure well over 100 miles for a 400wh battery on low assist in ideal conditions; but change a few parameters and it will quickly drop to not much over 30 miles even with relatively conservative 'tour' mode. So even with a 17aH 36v battery (just over 600wh) you will struggle to get 50+ miles with plenty of assist in Cornwall.

Torque sensors are more natural, but I find it very easy to get along with cadence. We have a solo with Bosch torque system and a tandem with Woosh XF07. Cadence have the advantage that you can 'ghost' pedal, just keep the pedals turning but no effort, and the motor will still assist. Torque drive units will always require you to put in around 1/3 or 1/4 of the total work even on highest setting.

Good luck. Any of the Woosh units should do you well; just be aware of probably range limitation, or buy a second battery. I think the 17ah battery probably has less voltage sag than the 13ah one; we often see a drop of around 2 bars (probably about 4v) on the XF07 with 13ah battery under load even at assistance level 3/5, and did even when it was new. I was limiting costs when we bought the XF07 as we didn't know how we'd get on with electric bike (we love it); but in retrospect I wish we'd gone for the 17ah battery. (Woosh may be able to add some better than anecdotal detail here.)