Croft TD 20th April 2015
Discussion
It's 102, although the email confirmation I had quotes both. You aren't going to be doing too many TDs this year as Oulton is always 102 now and Donny will only be Ok on noisy days which are quite limited this year. You're going to struggle to practice for a y upcoming races apart from Anglesey.
Also , a bike which will make 105 db can be made to make 102db without any great engineering skills or lengthy deliberations. To reach that lower limit it wouldn't be strangled to death - I'm sure plenty on here could help with the direction for that if you can't do it yourself George ...
hebegb said:
Also , a bike which will make 105 db can be made to make 102db without any great engineering skills or lengthy deliberations. To reach that lower limit it wouldn't be strangled to death - I'm sure plenty on here could help with the direction for that if you can't do it yourself George ...
I can put a baffle in it and get it through noise testing, but the bike really, really doesn't like the baffle. It struggles to even reach the red line. I might have to get 2 baffles, one that passes the noise test, one that is cut down and full of holes.
I repacked the exhaust the other week with the hope it would make it better, but when I ran it up to temperature, it didn't seem to make any difference
Will get it checked when I go to Cartagena in a couple of weeks.LoonR1 said:
It's 102, although the email confirmation I had quotes both. You aren't going to be doing too many TDs this year as Oulton is always 102 now and Donny will only be Ok on noisy days which are quite limited this year. You're going to struggle to practice for a y upcoming races apart from Anglesey.
I'll give them a ring tomorrow and confirm which it is.I'll mostly be practicing at Cadwell. Can pass there (just).
Will be doing a few Anglesey days too though.
George29 said:
Yazza54 said:
Dunno what your normal baffle is but pipewerx make perforated ones that should be much less restrictive
The baffle was made by the same people who did the exhaust (Scorpion). It only just gets it down to 102dB too. 2.) Standard OEM Can (No Cat) -
3.) TOR Can + Baffle ( With Cat) - 102DB (6.5K RPM This had wadding around the baffle)
4.) TOR Can Baffle Less (With Cat) - 106DB (6.5k RPM)
5.) TOR Can + Baffle (Without Cat) -
6.) TOR Can Baffle Less (without Cat)
7.) Arrow Slip on + Baffle (With Cat) - 98DB (Remember reading that from somewhere on here 6.5k RPM)
8.) Arrow Slip on Baffle Less (with Cat) - 101 DB (Remember Reading that from somewhere on here 6.5k RPM)
9.) Arrow Slip on + Baffle (Without Cat) - 102 DB (5.5k RPM)
10.) Two Brothers M5 Slip on + Baffle (With Cat) - 98db (6.5k Rpm)
11.) Two Brothers M5 Slip on Baffle Less (With Cat) - 102db (6.5K RPM)
12.) Two Brothers M5 Slip on + Baffle (Without Cat) -
13.) Two Brothers M5 Slip on Baffle Less ( Without Cat) -
14.) Ixil Slip On + Baffle (with Cat) -
15.) Ixil Slip on Baffle Less (With Cat) -
16.) Ixil Slip On + Baffle (Without Cat) - 105DB (6.5k RPM
17.) Ixil Slip on Baffle Less without Cat - 117DB (6.5K RPM)
18.) Werkes Pipes + Baffle (With Cat) -
19.) Werkes Pipes Baffle Less (With Cat) -
20.) Werkes Pipes + Baffle (Without Cat) -
21.) Werkes Pipes Baffle Less (Without Cat) -
22.) Scorpion Slip on + Baffle ( With Cat) - 96DB (6.5K RPM)
23.) Scorpion Slip on Baffle Less (With Cat) - 96DB (6.5K RPM)
24.) Scorpion Slip on + Baffle (without cat) - 98DB (6.5k RPM)
25.) Scorpion Slip on Baffle Less (without cat) - 105DB (6.5K RPM)
26.) Akrapovic Slip on + Baffle (With Cat) -
27.) Akrapovic Slip on Baffle Less (With Cat) -
28.) Akrapovic Full Racing System + Baffle -
29.) Akrapovic Full Racing System Baffle Less -
29.) Arrow Stage3 Titanium Race System + Baffle - 104DB (Reliably informed :wink
30.) Arrow Stage3 Titanium Race System Baffle Less - Rumoured to be around 117db :twisted:
31.) GPR Full Race System -
32.) Leo Vince Slip on + Baffle (with Cat) -
33.) Leo Vince Slip on Baffle Less (with Cat) - 102db (6.5k RPM)
34.) Leo Vince Slip on + Baffle (Without Cat) -
35. Leo Vince Slip on Baffle Less (without Cat) - 103Db
36.) Race Fit Slip on (Without Cat) + Baffle -
37.) Race Fit Slip on (without Cat) Baffle Less -
38.) Titanium Stage 2 header with no exup or cat. Mated to a stainless link pipe to a side exit titanium Scorpion Serket Taper (with baffle). - 106db at 10.25k rpm
39.) Full Arrow Stage 2 System Baffle Less - 101db 6-6.5k rpm
full list of 675's db readings with various exhausts George.
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