Carrera Crosscity 790 LED Display Problem.

Tortus

Pedelecer
Sep 22, 2023
49
2
RE Motor sensors, just check the lead coming from the hub motor if it only contains the 3 power wires then its a sensorless hub, if however the three power wires are combined with an additional 6 sensor wires then the hub has sensors..
9 pin on all of them.
 
  • Like
Reactions: thelarkbox

Tortus

Pedelecer
Sep 22, 2023
49
2
Quite a few of the KT's have a light output, though one can't run very powerful lights off them as they are only rated for about 1a power. For powerful lights one needs to tke direct fused supply via the battery/controller v+/-.
I would rather have the ones that just run on their own battery really, but thanks.
 

Tortus

Pedelecer
Sep 22, 2023
49
2
It's the other one.
Here's the other one (Specialized) with the torque arm fitted.
I haven't fitted the one to the pinnacle yet because I needed to find an adjustable one on splines to fit perfectly.
This is the wife's bike so she doesn't use throttle that much because "that's cheating"
 

Attachments

saneagle

Esteemed Pedelecer
Oct 10, 2010
7,005
3,241
Telford
Here's the other one (Specialized) with the torque arm fitted.
I haven't fitted the one to the pinnacle yet because I needed to find an adjustable one on splines to fit perfectly.
This is the wife's bike so she doesn't use throttle that much because "that's cheating"
It's the brake that puzzles me. It looks weird in the photo.

Generally, you should aim for a right angle between the arm and the bit that goes on the axle. If they're more or less in line, it can't work properly. I'd drill a hole in the arm in line with the mudguard stay hole and fix it there. If it's a good arm, you need a 5% cobalt drill to drill it. Your arm is sitting on both the axle and the derailleur, so it can't go any further and is OK like that, but I'm wondering if it got like that because the axle has already moved. Did you install it like that?

Also the back tyre on that bike isn't fully on the rim in the area of the brake. You need to pump it up a lot harder until it pops on or let it down, put some lube on it and try again.

All my comments about the weird front brake, tyre and torque arm relate to the photo in post#34. Please don't think I'm hating you or your bike. I only want you to have a safe and enjoyable riding experience.
 
Last edited:

Tortus

Pedelecer
Sep 22, 2023
49
2
It's the brake that puzzles me. It looks weird in the photo.

Generally, you should aim for a right angle between the arm and the bit that goes on the axle. If they're more or less in line, it can't work properly. I'd drill a hole in the arm in line with the mudguard stay hole and fix it there. If it's a good arm, you need a 5% cobalt drill to drill it. Your arm is sitting on both the axle and the derailleur, so it can't go any further and is OK like that, but I'm wondering if it got like that because the axle has already moved. Did you install it like that?

Also the back tyre on that bike isn't fully on the rim in the area of the brake. You need to pump it up a lot harder until it pops on or let it down, put some lube on it and try again.

All my comments about the weird front brake, tyre and torque arm relate to the photo in post#34. Please don't think I'm hating you or your bike. I only want you to have a safe and enjoyable riding experience.
I understand what your saying about the 90 degree angle and I will address this over the winter.
Yes I installed it like that as this was all new to me and my first build.
Both tyres have now been replaced and the cable comes out of the bottom of the axle.
I will get some more photos of the bike at the weekend and post them.

I use my Specialized to go out with my wife on her Pinnacle at weekends, we really enjoy the trips out as we live on the Northumberland coast, We do about 20 miles per trip, mainly through cycle paths through the woods to the coast at Newbiggin by the sea. I'm in my 60's and really enjoy just looking at the scenery and stuff you wouldn't see if you weren't on a bike.
We do have to go on the roads/ footpaths at times but stick to the 15mph allowed or less. Any faster and you miss everything around you, I suppose that's why the cops don't even look at us.
Top speed for both is 30+ mph, my car can do 130mph.
Have I gone that speed? No.
Nice to have the power to hand just in case. HAHAHA
 

Tortus

Pedelecer
Sep 22, 2023
49
2
Hi, just an update. Gear arrived from AliExpress. Controller is too big to fit in space provided, may have to strip the metal case off it and heat shrink it or just put it in a waterproof bag, Brake connections are the wrong gender.
Put it all on and still nothing, I checked the peddle assist sensor and it was flashing but still nothing. I had another similar one and put that on. What a carry on, it would only go if I peddled backwards so swapped it to the other side and it works. Good news the throttle I bought also works.
Had a little go on it as its raining seems to go ok.
 

saneagle

Esteemed Pedelecer
Oct 10, 2010
7,005
3,241
Telford
Hi, just an update. Gear arrived from AliExpress. Controller is too big to fit in space provided, may have to strip the metal case off it and heat shrink it or just put it in a waterproof bag, Brake connections are the wrong gender.
Put it all on and still nothing, I checked the peddle assist sensor and it was flashing but still nothing. I had another similar one and put that on. What a carry on, it would only go if I peddled backwards so swapped it to the other side and it works. Good news the throttle I bought also works.
Had a little go on it as its raining seems to go ok.
The metal case is needed as a heatsink.

It might help if you tell us which controller you got.
 

saneagle

Esteemed Pedelecer
Oct 10, 2010
7,005
3,241
Telford
It was a KT 17a sinewave.
Should have got the 15A one because it's the correct size. You should have said.

There are loads of settings you have to get right for them to work. Download the manual for your LCD and go through them, particularly C4 and P4, which affect how the PAS and throttle work. If you get stuck on any, just ask.
 

Tortus

Pedelecer
Sep 22, 2023
49
2
Should have got the 15A one because it's the correct size. You should have said.

There are loads of settings you have to get right for them to work. Download the manual for your LCD and go through them, particularly C4 and P4, which affect how the PAS and throttle work. If you get stuck on any, just ask.
Cheers will do. The 15a was the same size as the 17a so I thought I would go a bit higher for a couple of quid extra.
I will look at the manual tomorrow, Surprised and pleased the throttle works, you hear loads of people say you will never get a Halfords Carrera to work with a throttle.
Now I need some female to female brake cable adapters.
Any ideas?
 

saneagle

Esteemed Pedelecer
Oct 10, 2010
7,005
3,241
Telford
Cheers will do. The 15a was the same size as the 17a so I thought I would go a bit higher for a couple of quid extra.
I will look at the manual tomorrow, Surprised and pleased the throttle works, you hear loads of people say you will never get a Halfords Carrera to work with a throttle.
Now I need some female to female brake cable adapters.
Any ideas?
The 15A one is smaller unless you found a special small 17A one, but then it should fit. 15A should be 31x51x86mm, 17A is 35x61.3x92.5. What size is yours?