Is there a way to get the bike tested before a track day? Ive gutted the stock muffler but its not to bad. I just want to check it so we don't have trouble on the day. The bikes a Hyo 650.
Maybe try an SPL meter on a smartphone of some kind. Ride by with the phone 30m away and it should read less than 95dB. I think that's the track reg
First whats the noise level you need to reach for MX it's 96 decibels at 3/4 throttle .
the offical MX test is at much less than 3/4 throttle, and so easy to beat its not funny, (its a piston speed calculation, can't remeber the actual rpm's but its under 1/2 the maximum on the four strokes)
Road racing uses a much better fly by system, where its 95db from a point off the track (30 metres from memory)
so with out a DB metres, a fast straight, and someone watching it, its pretty hard to measure away from the track
Which track? I asked the MotoTT guys as I was worried about mine and said it was a complete non issue at Taupo. I don't think you'll have to worry anyway.
"Stupidity has a certain charm about it. Ignorance doesn't." --- Frank Zappa.
I would expect you would be safe with stock exhaust, with no issues.
Most circuits will have some form of limit which is <96db at 30m which is aligns with the MNZ rule book (or vice versa). There was a very long discussion in the racing section a while back on this.
There are currently 1 users browsing this thread. (0 members and 1 guests)
Bookmarks