HPBCANADA.COM • View topic - How high will a 49ci motor rev?

LittleCharger wrote:

Sorry we missed you at the race could have come over for a bite to eat after the races with some of the other guys

Lwp...I'd be jacking it a 1/4" at a time and see what happens, once you get to that sweet spot you can decrease the increments of movement.

I think in both your cases I'd be propping to turn in the 7100-7200 area.

The 26 might actually be too much pitch but you should pick up some more rpm when you raise the motor.

Will do on jacking the motor up, i can only do one hole in the motor. Ive got one of Kevi's setbacks on it, i should be able to lift that up half an inch with all the allen screws right? I think that would put me up in around 68-7000 rpm but not sure a raker would slip like crazy spinning that quick. The lake is terrible this weekend so i might try get it lifted up that one hole and try it on monday

Author:	13Checkmate [ August 6th, 2016, 5:51 pm ]
Post subject:	Re: How high will a 49ci motor rev?
LittleCharger wrote: Sorry we missed you at the race could have come over for a bite to eat after the races with some of the other guys Lwp...I'd be jacking it a 1/4" at a time and see what happens, once you get to that sweet spot you can decrease the increments of movement. I think in both your cases I'd be propping to turn in the 7100-7200 area. The 26 might actually be too much pitch but you should pick up some more rpm when you raise the motor. Will do on jacking the motor up, i can only do one hole in the motor. Ive got one of Kevi's setbacks on it, i should be able to lift that up half an inch with all the allen screws right? I think that would put me up in around 68-7000 rpm but not sure a raker would slip like crazy spinning that quick. The lake is terrible this weekend so i might try get it lifted up that one hole and try it on monday

Author:	phillnjack [ August 6th, 2016, 8:15 pm ]
Post subject:	Re: How high will a 49ci motor rev?
Someone did ask about bigger rakes for v4 13 spline. A 24 if a mark raker can go to 26 or 27 pitch. They use them on the 140 Johnson in Europe offshore circuit racing. Cheaper than a win race prop and better bow lift.

Author:	Hevi Kevi [ August 7th, 2016, 2:20 am ]
Post subject:	Re: How high will a 49ci motor rev?
13Checkmate wrote: LittleCharger wrote: Sorry we missed you at the race could have come over for a bite to eat after the races with some of the other guys Lwp...I'd be jacking it a 1/4" at a time and see what happens, once you get to that sweet spot you can decrease the increments of movement. I think in both your cases I'd be propping to turn in the 7100-7200 area. The 26 might actually be too much pitch but you should pick up some more rpm when you raise the motor. Will do on jacking the motor up, i can only do one hole in the motor. Ive got one of Kevi's setbacks on it, i should be able to lift that up half an inch with all the allen screws right? I think that would put me up in around 68-7000 rpm but not sure a raker would slip like crazy spinning that quick. The lake is terrible this weekend so i might try get it lifted up that one hole and try it on monday Yep, just loosen the screws, adjust to where you want and tighten.

Author:	13Checkmate [ August 7th, 2016, 1:09 pm ]
Post subject:	Re: How high will a 49ci motor rev?
Cool, ill go up the one hole first and let you guys know how it is tomorrow or tuesday after i can run it

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