Author Topic: CruiSYM 300  (Read 34032 times)

Thoppa

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Re: CruiSYM 300
« Reply #240 on: July 06, 2021, 08:37:31 PM »
Aha. I did wonder what a cross-head was doing as a clamp bolt - it would be far too easy to round off the slots with the torque needed. It's quite hard to round out an allen head though, and I assume the head of the bolt is recessed too, so you can't get mole grips on it, or use an angle grinder to cut a slot in it. So you can try an imperial oversized allen key or a torx key, and hammer in the key. I'm guessing you don't have a screw extractor tool, or welding gear, or metal-based epoxy glue so those aren't options. Like you, I wouldn't bother trying to drill it out - it'll still be very hard to remove - and repairing the shape using needle files will take too long too.

I replaced that allen bolt with a regular raised hex head some time ago, but that was because the threads in the fork had been damaged - it didn't feel good when tightening it up - like it was ready to turn too easily, not tighten up. So I used an extra long bolt to reach into deeper threads, with a thick washer under the head. The washer helps distribute the load - essential because the recess in the fork for the allen head creates a gap under the washer, so the washer has uneven load across it - hence it needs to be thick steel. Without the thick washer, the bolt's head would experience the uneven load and would be more likely to fail in time. Stress will concentrate around the base of the head, and it will work on microscopic cracks, leading to catastrophic failure - the head will shear off. With the washer, it should be fine for the load, but it's not ideal. If I could get a longer allen bolt I would.
Ninja 650R
Citycom 300

Sylar

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Re: CruiSYM 300
« Reply #241 on: July 07, 2021, 02:25:53 AM »
Thankyou for that Thoppa, it is because of it's position that I am reluctant to try anything. Leaving it to someone else seems the option for me.

Sylar

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Re: CruiSYM 300
« Reply #242 on: July 16, 2021, 02:43:22 AM »
I got a phone call to say my Silver wing had been repaired. They fitted a new starter relay and did a full diagnostic check on the electrics, and could find no fault. Total cost two hundred and sixty nine pounds. It is running okay but, I do not think I could ever be easy riding it again.

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