Exuptoy

Cheers guys. I’ll take a look. Out on the road bike today.

Sprockets are all good, I have wondered about the derailleur as it seems as though the rear of it is twisted to the right. Wasn’t sure if it was meant to be that shape?

Guys, anyone have any idea why my Carrera Vulcan-E would be throwing a chain when under load? Static it’s fine and the free wheel function of the rear sprocket works as it should, however, whether the rear hub is switched on or off, if I am going down hill without pedalling it seems as though the rear sprocket feeds slack chain behind the front chain wheel and the next time you pedal it comes off at the front. I’m fed up of having to stop and I’m full of oil when I get home. Chain hasn’t stretched, confirmed with a chain gauge.

If anyone needs a copy of the set up manual for a DS103 display, I got this earlier from the technical bod at SRSuntour.DS103 display technical specification 20200825.pdf

Cheers buddy. I managed to find a battery earlier along with the charger as the guy had other issues with his Crossfire (failed hub and bottom bracket sensor). I got the battery, DS103C screen and charger for £145 which I was happy with. Not certain if the screen can be calibrated though as it is reading slow, but more importantly everything else works including the 4 modes. I’d call that a win.

SRSuntour in Germany said the only screen I could retrofit was the SW102 OLED from the Vengance 2 but I just back from Halfrauds, I got a new screen and proven it working with a customers battery for £130, however it looks like my battery may be goosed. When I plug in the PEN plug it sometimes shows 4 blue lights with a flashing fifth one then it drops off to nothing. The charger is just green lit like it’s fully charged. Maybe the battery needs some work on the internal board. The Halfords guy said the kit looks like screen, controller and crank all came from a touring bike like the Crossfire. There’s a few used batteries on eBay for offers around £180 so this will have cost me £550 with the charger for a 2021 bike which I don’t think is bad but certainly not a bargain. Off to find me a battery

Yes, the battery details are on the label under the battery, also the manual listed above by [mention=3847]saneagle[/mention] ( https://washford.a.bigcontent.io/v1/static/Suntour%20TFT%20148%20Owners%20Manual ) shows the same battery and screen being packaged on a retail bike.

Spec is further down this page. The only thing that differs is the Suntour display on mine is the Topology DS103-C.

It’s this one with the profiled down tube not just a bodged £300 treader. It also says that in 2021 it was still using Suntour components not the later Bosch stuff so I’m not sure. https://99spokes.com/en-GB/bikes/carrera/2021/vulcan-e-electric-mountain-bike-18

Yes it does. There’s a slot in the centre sleeve and it passes through. I assume there’s a cadence sensor inside the BB to know when you’re peddling?

Looking online if seems some of the Vulcans had a sensor on the rear of the front chain ring, this one appears to have the sensor inside the BB. I’m assuming it’s a later version as the earlier ones seem to have a lot of issues at this point?

I’ve just removed the frame cover, I’m not certain if the screen is an upgrade as the part number would suggest it’s a colour display with the DS103-C designation. Were they standard? The controller looks in fine fettle and doesn’t look to have had a hard life. No burning, scuffs, shorted wiring etc. Excuse the stuff on my table, gotta keep the chair and cushions up or the dog uses it as a post

Ok. Thanks for the info guys. Something to get on with. Halfrauds will carry out an assessment on the bike for free but you can guess that they’re gonna find lots wrong with it. I have a charger on back order from Powabyke at £68, so I will await its arrival and see how it goes charging it up. It’s the 3pin Pen (house type charger). Are there any member in South Wales that could confirm my battery would take a charge? Long shot I know but if the battery is goosed and I have to pay for a new charger then it could get expensive wasting extra funds.

Torque sensor?

Please excuse my ignorance, what is the BB PAS?