clubman 10.5 x 7 or 10.5 x 8 (nya)
For piped .45's (.40 to .50) we recommend:
Use the following in conjunction with a Bolly EQ45 quiet pipe at approx 47-49cm length.
10.5 x 8 These are listed in order of load
10.5 x 6.25 3B on the engine, depending on pipe, etc.
9.5 x 6.5 The expected RPM will be approx 13 500
11.25 x 8 to 11 000. Noise levels will be approx
11 x 7 4B 96 to 92 dB (less with cowled engine)
clubman 10.5 x 7 or 10.5 x 8 (nya)
A very popular set-up uses an EQ45 @ 48cm, and an 11.25 x 8 @ 11 7000 RPM.
For conventional .60 engines recommendations are (with standard muffler)
12 x 8
11.25 x 8 These are listed in order of load on the engine,
11 x 7.5 3B
11 x 7 4B
clubman 11.5 x 7
For conventional .120 4 cycle engines we recommend:
13.5 x 12 9 100 Early 120
14.5 x 12.5 8 500 Surpass, 120R, YS
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