Hi
My partner has asked me to have a look at her radmini. It's makeing a knocking or creaking nose from somewhere along the forks or headset. I thought at first it could be s cable knocking or a loose bolt. I've made sure everything is tightened and cables are not rubbing.
My next thought is it could be the headset but I'm not sure I've attached a video below if anyone can help identify the problem. If it is the headset how do I go about tightening it and checking it being loose hasn't damaged the bearings?
Thankshttp://cloud.tapatalk.com/s/6030f58442565/rattle_Full%20HD%201080p.mp4

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After riding my bike which was upgraded to hydraulic brakes bought from Big Game Bikes my girlfriend has decided she wanted to upgrade too. She loves a bargain and picked up a used set of Shimano brakes and levers from Gumtree for £20 they look like these ones on Ali express https://m.aliexpress.com/item/4000360416411.html?spm=a2g0n.orderlist-amp.item.4000360416411&aff_trace_key=&aff_platform=msite&m_page_id=1008amp-EJ3EV4lHhp5wtK1conrHvw1603886002833&browser_id=&is_c= they have the correct connector for the rad bikes too. I've installed the front brake and it works very well motor cut off etc all working. Now here's where I'm hoping you guys can help. The rear brake came with the hose detached from the lever as the seller had tried to feed the cable through his brake frame. So I've reattached the cable using a new insert and olive. The brake is obviously full of air and very spongy to the point it doesn't fully stop the rear wheel. I've got a bleed kit and I'm trying to bleed the brakes but for some reason I can't push oil into the caliper and when I try to bleed drain oil out no oil drains from the caliper. When I squeeze the leaver oil does flow out of the bleed nipple on the caliper but when I release the lever it is sucked back up the hose. I've tried following the instructions in this YouTube video but I'm now stumped. https://youtu.be/wYH9dvmZg-Q
Any ideas before I just put the stock brakes back on?

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 while out today my bike has developed a problem with the throttle. When you twist it it no longer twists back when you release it. It seems to me like the spring is broken.

I've emailed Rad but judging by how busy they are I doubt I'll get a quick reply. Does anyone know of a way to fix this or is it time for a new throttle?

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