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General Minitrail Talk
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S65 carb woes
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<blockquote data-quote="69ST" data-source="post: 187519" data-attributes="member: 5"><p>For the Z50, that's dead-on. Pre-1968 models can be a whole different story. Some of the pushrod motors, especially, can spin crazy rpm...and develop enough hp to reach speeds that a stock 6v CT70 can't match. Some factory specs:</p><ul> <li data-xf-list-type="ul">C50 4.8hp@10,000rpm</li> <li data-xf-list-type="ul">S50 5.2hp@10,000rpm</li> <li data-xf-list-type="ul">Z50A 1.9hp@5,000rpm</li> <li data-xf-list-type="ul">S65 5.5hp@9,000rpm</li> <li data-xf-list-type="ul">CL70 6.5hp@9,500rpm</li> <li data-xf-list-type="ul">C70 6.2hp@9000rpm</li> <li data-xf-list-type="ul">SL70 5.0hp@8,000rpm</li> <li data-xf-list-type="ul">C90 7.5hp@9,500rpm</li> <li data-xf-list-type="ul">CL90 8.0hp@9,500rpm</li> <li data-xf-list-type="ul">CT90 7.0hp@8,500rpm</li> <li data-xf-list-type="ul">ST90 5.5hp@8,000rpm</li> </ul><p>5hp is enough to into the mid-40s, without a tailwind or downhill assist. The S65 has the advantage of less rolling and wind resistance; it's generally considered a 50mph bike...as is the CL70. I wouldn't take these numbers as gospel. They are fairly consistent amongst themselves, good enough for model-to-model comparisons and loose benchmarks.</p></blockquote><p></p>
[QUOTE="69ST, post: 187519, member: 5"] For the Z50, that's dead-on. Pre-1968 models can be a whole different story. Some of the pushrod motors, especially, can spin crazy rpm...and develop enough hp to reach speeds that a stock 6v CT70 can't match. Some factory specs: [LIST] [*]C50 4.8hp@10,000rpm [*]S50 5.2hp@10,000rpm [*]Z50A 1.9hp@5,000rpm [*]S65 5.5hp@9,000rpm [*]CL70 6.5hp@9,500rpm [*]C70 6.2hp@9000rpm [*]SL70 5.0hp@8,000rpm [*]C90 7.5hp@9,500rpm [*]CL90 8.0hp@9,500rpm [*]CT90 7.0hp@8,500rpm [*]ST90 5.5hp@8,000rpm [/LIST] 5hp is enough to into the mid-40s, without a tailwind or downhill assist. The S65 has the advantage of less rolling and wind resistance; it's generally considered a 50mph bike...as is the CL70. I wouldn't take these numbers as gospel. They are fairly consistent amongst themselves, good enough for model-to-model comparisons and loose benchmarks. [/QUOTE]
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