I'll have to see how long that rear suspension lasts, keeping my fingers crossed

 

It should last 50 hours before service easy, forks too.

 

According to that guy in the video saneagle posted about cost of servicing an eMTB.

 

You'd better get your bike booked in pronto (he's in Cumbria LOL). He'll be able to do that in his "Suspension Room".

 

That's because they are twats of course.

 

20" or 16"or below make real differences, but there's often very little meaningful difference between 26", 27.5", 28" or 29er. Most use the same 700c rim and some with a skinny little slick tyre on that rim are smaller diameter than my 26" rims with taller tyres like some Kendas.

.

Edited September 28, 20241 yr by flecc

20" or 16"or below make real differences, but there's often very little meaningful difference between 26", 27.5", 28" or 29er.

I think the reason the MTB world started adopting bigger diameter wheels was to cut back on the suspension needed for a smooth(ish) ride off-road. The smaller the diameter, the lower the wheel dips into ruts and gaps, making a jounce-ier ride. Bigger diameters roll across the tops of the rough stuff, requiring less suspension travel. All of which is superfluous on tarmac, until you hit a pothole.

Did Brompton ever make an MTB?

26" was the thing when I bought my last MTB, and I'm happy with the wheel size personally.

And it's the perfect chainstay width/position for a mid drive kit.

I took my rear hub wheel off my Carrera (with coil front fork) and moved it to a genius mc40 (aluminium frame) which cost peanuts

Can you post a pic of your Genius so I can get a handle on what you did.

I've only really looked into mid-drives so far, and that is plainly not possible with my Genius.

Plus, I've only EVER ridden a bike that drives from the rear wheel.

How does front drive feel (well, 2WD really, when you're pedalling too).

Can you post a pic of your Genius so I can get a handle on what you did.

I've only really looked into mid-drives so far, and that is plainly not possible with my Genius.

Plus, I've only EVER ridden a bike that drives from the rear wheel.

How does front drive feel (well, 2WD really, when you're pedalling too).

It is a rear hub conversion

 

 

 

I stated with a £50 Facebook marketplace 15 year old Carrera Vulcan hardtail (26" wheels) with mechanical disc brakes and fitted the ubiquitous Bafang G020 rear hub ( winding code 12) with the standard 48v 18amp speed based controller. I upgraded to hydraulic brakes (£30 off Ali express) and the woosh bottom bracket torque sensor - which came with a controller with power based pas levels

 

That all worked really well, but it was a bit heavy to get in and out of my shed, the coil front fork wasn't great on trails and on very steep hills (1000 ft climbs with gradient getting up to 27% with a combined weight of 130kg for me and the bike) the 6 MOSFET controller would overheat

 

So that is where I got the Genius (again off Facebook marketplace) , fitted the Bafang rear wheel , with a 9 MOSFET KT 22anp controller (that I have "detuned" to 18 max amp). Seems brilliant on road and trails, possibly would have got the winding code 14 version if it was primarily for trails. Went to single front gear (48t) for leisurely pedalling cadence, again, possibly would have gone slightly smaller if using primarily for trails. 48v 20ah battery is a bit tight but can slide on and off (20" frame).

 

The suspension seems fine so far, checked the shocks air pressure after a couple of months and it has kept the same air pressure - no leaks

 

I thought would be able to do front, rear or mid motor conversion, isn't it a square taper bb ?

 

The story is here

 

https://www.pedelecs.co.uk/forum/threads/pedelec-nirvana.47347/

Edited September 29, 20241 yr by Peter.Bridge