93.0KMH on a road bike, but is it true?

[aserota]

havent looked at tyres there contis, will have a look tomorrow.

Its a road/triathlon bike. carbon frame from trigon, fsa cranks, dura ace gears and chain. XED Carbon wheels with conti tyres. Just over 8kg iirc

 

[aserota]

edit,

thanks punky, will sort this out tomorrow

 

[monnet]

Are you sure it was registered going downhill? If your average and the speeds you saw as you were riding looked about right it might be that at a stop in traffic the magnet was aligned with the sensor - mine has done this and when i've checked the data at the end of a ride I've been surprised to learn that my top speed can sometimes get up to 150kph.

 

[domtyler]

Best off upgrading to a GPS based computer and forget about all these fiddly little magnetic anomalies.

 

[fossyant]

Looks like Cateye haven't changed the computer settings in all these years - mine is about 211 for my 23mm Pro 2's......

 

[Jaded]

I'm sure 60 is possible.

I did 50 last weekend, all you need is monstrous thighs.

 

[aserota]

Speedo generally seems accurate, never has jumped to higher speed etc. Quite impressed with the kit

 

[Noodley]

I have ridden down the Cairnwell at close to 60mph, (59.6mph) and with others who have hit over 60mph on that descent. It's a long easy(ish) descent, but with a few twitchy bits. I have hit 56mph down a very straight short descent a mile from my house - have not done it for a while, not since I narrowly missed a pheasant when I was doing 50mph There is a shooting estate next to the road and there are lots of pheasants, so it try to take it a bit easier now...unless it's dark and they are roosting

 

[Jaded]

It doesn't bear thinking about what might happen at speed.

Simply, head down and enjoy!

 

[Smokin Joe]

Assuming you have a road bike with 700c wheels, the setting should be as Redbike suggests, around 209/210mm.

 

[byegad]

My cateye wireless on my TriceQNT often tells me I maxed out at 127mph. It only happens along one stretch of road and not every time. I think it's picking up interference as the road crosses the electrified East Coast Mainline. Good for bragging about recumbent trike top speed though!

Reality check!
I really never get above 25mph on that stretch.

 

[alecstilleyedye]

i registered going at about 90mph over the top of the forth road bridge (wireless comp of course).

 

[yenrod]

I adjusted my Cateye Velo 8 to 214 (from 210) and it seems its recognising a metre on the display to a metre travelled.

It's not wireless so its accurancy SHOULD reflect that ! ! !

 

[RedBike]

I adjusted my Cateye Velo 8 to 214 (from 210) and it seems its recognising a metre on the display to a metre travelled.

As a bike wheel is just over 2m in circumfrence the computer cannot be accurate to a metre.

It's always intresting to compare distances / average speeds after a group ride. Despite the fact that we've all riden as a group and done exactly the same distance / average speed it's rare to find two computers that actually agree.

 

[yenrod]

As a bike wheel is just over 2m in circumfrence the computer cannot be accurate to a metre.

Surely then. some software inclusion can be accomodated by the cycle computer to take that into account, esp. with the technology thats knocking round today.