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Discussion: Snap!!

in: FE; FE > 2012-11-10

Nov 10, 2012 3:04 PM # 
Tim S:
Late, death wobble.... etc.
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Nov 10, 2012 3:32 PM # 
FE:
Never, surely not!......just seen your log. Sorry I missed you, I didn't see you on the start list and faffed around the finish area (times and forgot jacket/keys). Then needed a long warm down and a coffee to get some colour back in my cheeks.

Any idea what causes speed wobbles, certainly seems a lot of flex in my front forks/wheel. I guess its the same as a car, hit a certain speed and the natural vibrations start to resonate, apply more power and it gets a lot worse as I found. Maybe I need a 35 mph Garmin alert and bike shop visit.
Nov 10, 2012 4:12 PM # 
Tim S:
I was 14...... I scrawled my name, which was why you probably didn't spot it.. I meant to tell you what car to look for, and I didn't realise that everyone didn't go back to the start at the end, so wasn't at the finish line so to speak.

I think that's right on the speed wobbles... I've not had one like that before.. it made me think my front wheel was loose. I've just started using a short stem with longer extensions which might have changed things a little.

I assume you were the chap in the bright partly pink skinsuit... it looked quite smart I thought.
Nov 10, 2012 5:00 PM # 
FE:
Yes, certainly eye catching for wayward drivers, they even have pink shoe covers to match!
Nov 11, 2012 3:58 PM # 
Tim S:
You'd presumably be a bit above threshold for 30mins if you went all out.... maybe 5bpm?
Nov 11, 2012 6:25 PM # 
FE:
Good question and thanks for the input, worth spending time thinking it through. It wasn't flat out, but no warm up clouds matters. There's no substitute for a 25 mile tt, to get it right. Better to estimate on the lower side, much as I'd like it to be higher! I had a Polar HRM 15 years ago and during an O race I could stay at least 3 bpm above mid race for long periods and 5-7 for up to 5 mins, but as a rookie biker the engine's a lot frailer.

Perhaps I should plump for 156. I should get more feedback now with the Garmin. The sweet spot training theory appeals to me, with limited time to train, which would be centred neatly in the 145-150 range.
Nov 14, 2012 8:33 AM # 
Tim S:
Incidentally, there's a piece in this week's cycling weekly, suggesting that one cause of death wobble is the wheel being out of balance (due to the valve)... and showcasing a product which basically sticks a small weight to the other side of the rim.
Nov 14, 2012 8:33 AM # 
Tim S:
Incidentally, there's a piece in this week's cycling weekly, suggesting that one cause of death wobble is the wheel being out of balance (due to the valve)... and showcasing a product which basically sticks a small weight to the other side of the rim.

This discussion thread is closed.