Built for speed

Snakeoil · Post by **Snakeoil** » Thu Oct 18, 2012 11:18 pm

Bring a GPS along for the ride. It should record your top speed and be very accurate.

Other choice is a digital bicycle speedo. You can calibrate it for your tire diameter. Have a local mounty shoot you with his radar and readjust if necessary. I use one on my Motogiro bikes. Get the wired version not the wireless. Wireless won't work due to radio interference from ignition. The bicycle speedo also have a lot of neat functions that are useful on a bike like max speed, avg speed, trip odo, elapsed time, etc.

regards,
Rob

G-Man · Post by **G-Man** » Fri Oct 19, 2012 1:06 am

If you have a smartphone you can get a 'ridelogger' app so that you can impress your friends at your local watering-hole.

Alternatively, if you read the performance statistics on this page then it will be a complete cinch. I think the guy who wrote this must be on some kind of substance abuse....... :-)

http://www.cyclechaos.com/wiki/Honda_CB77

G

Hoosier Tom · Post by **Hoosier Tom** » Fri Oct 19, 2012 12:48 pm

I don't know how much you would benefit/gain by going to a 520 chain/sprocket setup. The chain should be less weight than stock 530.

HT

JSharpPhoto · Post by **JSharpPhoto** » Fri Oct 19, 2012 12:51 pm

Thanks for the tips guys. I wonder how many riders thought they did the Ton in 1960, but didn't, because they didn't know their speedo was off by 10%.

jensey · Post by **jensey** » Fri Oct 19, 2012 1:28 pm

Hi,

Thanks for the tips guys. I wonder how many riders thought they did the Ton in 1960, but didn't, because they didn't know their speedo was off by 10%.

10 % ? sometimes, but probably more !

With a secondary reduction of 15/32 this is the crank rpm versus the speed, calculated taking all reductions in account :

JSharpPhoto · Post by **JSharpPhoto** » Fri Oct 19, 2012 1:46 pm

thanks for that!

it looks like 15/32 is a good starting point.

Snakeoil · Post by **Snakeoil** » Fri Oct 19, 2012 2:32 pm

G-Man wrote:If you have a smartphone you can get a 'ridelogger' app so that you can impress your friends at your local watering-hole.

Alternatively, if you read the performance statistics on this page then it will be a complete cinch. I think the guy who wrote this must be on some kind of substance abuse....... :-)

http://www.cyclechaos.com/wiki/Honda_CB77

G

Pulling wheelies and doing 118 mph in the quarter!? Batman must've been on the bike that day.

regards,
Rob