Throttle usage

[Footie]

Ian, flecc, thankyou for your advice.
There is some drag on the motor, but that’s to be expected and is acceptable.
From what has been suggested and the feeling of the drag, I think it’s more like brake drag than motor drag.
I have looked again at the disk and after undoing the calliper cable the wheel did run a little longer (about half a turn more). I fitted a cardboard shim to the inner calliper, which gives just a little bit more clearance. This seems to help the wheel to rotate more when I lift and spin it. The only trouble is the brakes are very poor and it’s questionable if I could stop in a hurry
Looking closely at the brackets that hold the calliper on, it looks like it’s had a thump at sometime and I am thinking this may have also resulted in the disc being slightly bent – it can only be slightly as visibly there is no sign of damage.
Without taking the whole thing apart and laying the disc on a sheet of glass to check it I can’t tell for sure.
I suppose if the brakes had been plain old calliper brakes they would have escaped being damaged.
I will have to play about with the brakes and arrive at a compromise between braking efficiency and drag.
All I can hope is that it will iron it’s self out over time and straighten due to usage.
In the meantime thanks for the advice.
Steve

 

[flecc]

A pleasure Steve. With use the bike will become easier running in all respects anyway as things bed down, and as ever, just getting used to the bike makes it possible to adapt and get the best out of it.

I assume it has cable operated disc brakes, and they are notorious for their weakness, so that's only to be expected. Again it's a fashion item that manufacturers put on to please the market, where they'd be much better off with V brakes. There are various pads available and you may find a recommendation online at some future time which could improve things a bit.

Torq riders like me have also complained at length about it's brakes, but with time we adapt and compensate without even thinking about it, and I bet you'll do the same and hardly be aware of them in the end.
.

 

[flecc]

Further to the above:

In fairness to the manufacturer, there is one good reason for disc brakes on mountain bikes under some circumstances. When ridden in deep mud, rim brakes can clog up with mud enough to bring the wheel to a halt. That's worst with caliper brakes, but V brakes clog as well, just a bit later.

Rear disc mountings are always IS, so you can easily replace parts or even the whole brake. The Avid range start at about £35 complete, or you can get spare discs. All you need to do is match the disc diameter, the rest is International Standard fitting. You can even go to a larger disc for more braking if there's space, but the cost rises sharply then.
.

 

[Beeping-Sleauty]

Brake housing alignment...?

..........From what has been suggested and the feeling of the drag, I think it’s more like brake drag than motor drag.
........Steve

Hi Steve,
i had a similar problem on my back wheel and after removing the brake assembly entirely and refitting several times i realised that the lugs welded to the frame that accept the brake housing bolts, were not aligned properly parallel to the wheel, they were offset very slightly, so i ground down one side of a spacing washer so it's like a sloped wedge, this straightened up the housing to the disk and then the brake almost ran free, but it was still clipping the shoes at the same point on the disc, this was cured by tightening a few spokes to true the wheel.

your Cougar Mountain Electric looks very similar to my eco-brand Whirlwind, same spec & motor, when i lift the back wheel and turn throttle full on then cut throttle, the back wheel spins for 8 seconds.

some unfortunate individual, possibly boss-eyed, earning a dollar a day equals shoddy hand-held welding,

hope this helps,
beeps

 

[Footie]

Thanks beeps,
Not looked at the fixings although I know it's had a wack.
If no joy I will check the caliper alignment with the wheel.
Rain has stopped play here, so I will have to wait until the sun comes out - could be a while
Steve