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340 monsoon top speed?


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I just had my transmission blow, the details are on another thread. Anyway I was wondering what your rpm to speed ratio was at WOT. Mine was something like 5100 rpm and the speed was about 45 mph. As you can see we have a VTX and I realize that there would be several factors determining this like weight, however this is with no ballast and say 4 people in the boat. It seems like a may have had something wrong with the tranny from the get go.

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I just had my transmission blow, the details are on another thread. Anyway I was wondering what your rpm to speed ratio was at WOT. Mine was something like 5100 rpm and the speed was about 45 mph. As you can see we have a VTX and I realize that there would be several factors determining this like weight, however this is with no ballast and say 4 people in the boat. It seems like a may have had something wrong with the tranny from the get go.

I've got a VLX but mine was about the same 5100-5200 and around 43-46 depending on water conditions. Sorry to hear about your misfortune, will the dealer be able to fix it soon?

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Yes!!!! Tilly's Marine is the best, they are getting me a new transmission and V-drive assembly. Should take about a week. Thumbup.gif

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Yes!!!! Tilly's Marine is the best, they are getting me a new transmission and V-drive assembly. Should take about a week. Thumbup.gif

Glad you won't have much downtime. Must have been an issue with your tranny before, probably would have happened eventually, at least it happened before the season really started.

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Top speed is a function of engine, prop, current, water conditions, and even wind. Most of it is the first two. My rev limiter is @ 5200ish rpms. My top speed varies from 41 - 47 depending on which prop I have on the boat. My first prop had a big pitch and it would move 46-47mph with crappy hole shot. My stock Acme537 and OJ475 move it around 43mph at the rev limiter. Higher pitch = higher top end and less hole shot, so the answer to your question is, it depends. Biggrin.gif

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RPM and top speed sound well matched to me. It is even a well matched prop for your boat, getting you a tad over 5000 RPM. I don't think you will see any difference with your new trans. Keep us posted after the repair.

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RPM and top speed sound well matched to me. It is even a well matched prop for your boat, getting you a tad over 5000 RPM. I don't think you will see any difference with your new trans. Keep us posted after the repair.

Plus1.gif

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