Tempest on 2-stroke 150 VMax

[Cphil]

I asked in the Props forum but wanted to ask here too. I want to put a Tempest Plus on my Yamaha VMax. I had an extra Flo-Torq II hub kit sitting around. It is Part # 835257K 6. Can I use this hub kit to mount the Tempest plus on my 2-stroke 150 Vmax? Thanks

[21XDC]

You need the hub kit # 835271Q2. It has a thicker thrust washer and different aft parts.

[Cphil]

Thanks as always

[ALREID59]

What size are you using? I have a 23 and 24 trying to decide which one runs better, seem to get better response and rpms from 23

[Cphil]

I have a 23 Yamaha M series and a 24 Tempest. I haven’t tried it yet because I have some other
issue that isn’t allowing me to get consistent full RPM no matter which prop I have on. My motor
seems to top out around 5000-5100 regardless of what prop I run. My carb plates are opening all
the way but I’m still not hitting max RPM. I’ll have to figure it out this spring

[cwilt]

I have a 23 Yamaha M series and a 24 Tempest. I haven’t tried it yet because I have some other
issue that isn’t allowing me to get consistent full RPM no matter which prop I have on. My motor
seems to top out around 5000-5100 regardless of what prop I run. My carb plates are opening all
the way but I’m still not hitting max RPM. I’ll have to figure it out this spring

What boat and how low is your motor? i am running a 23 tempest and its at 5450 ish. The tempest likes to run higher. i tried a 24 pitch on my small boat and could not get the prop over 5.1 k rpms...same motor.

[Cphil]

What boat and how low is your motor? i am running a 23 tempest and its at 5450 ish. The tempest likes to run higher. i tried a 24 pitch on my small boat and could not get the prop over 5.1 k rpms...same motor.

It’s an Xpress. Almost 19’. I have moved the motor up and down and tried different pitch props and get the same
RPM regardless of what prop is on it...so far. I’m going to try this 24 Tempest at about 3 1/2” prop to pad here in a couple weeks. It has been surging like it has a vacuum or fuel leak or venting problem so I’m more focused on getting that fixed and I’ll bet I will get higher R’s in the process

[cwilt]

Check your plugs first for surging issues. A little carbon on them will cause them to miss at higher RPM's. I had a wierd issue a few years back. The engine would miss when i was going strait, but when i turned around to go back to ramp it would stop missing. I dont know how or what would cause this. When i pulled my plugs 2 were carboned up. I replaced the plugs and adjusted the oil pump and never a problem since.