Out of sheer morbid curiosity how fast is the fastest boat ever to roll out of Schiada? 110, 115?
Take the fastest Vector , reduce by 10 mph then you will have the fastest Schiada speed.
I heard of one with 1100 HP that went 90 :champagne:
About 40 mph slower than the fastest Stoker.
Im sure RD will chime in shortly and answer the question
This has been an ongoing debate for years. I'm definitely no expert but I've been around a Schiada or 2 and have had a gps in a few and a radar on a few. Fact is a few exaggerate their speed a little. And I've offered up money as a bet to few of them with no takers. They are still IMO one of the classiest boats I've ever seen. My 22 with almost 700hp will only run mid 70's. Fast? No. But it rides good and is a kick in the pants to drive. It accelerates real hard which is more fun to me than a huge top speed.
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The mouth behind a shitada is much faster than the actual boat itself.
Ask and shitada owner. They all do 100+ sitting in the garage on the trailer.
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Leonard Schiada did design a timeless classic......The 21 RC V-drive is by far the best of the best.....
This has been an ongoing debate for years. I'm definitely no expert but I've been around a Schiada or 2 and have had a gps in a few and a radar on a few. Fact is a few exaggerate their speed a little. And I've offered up money as a bet to few of them with no takers. They are still IMO one of the classiest boats I've ever seen. My 22 with almost 700hp will only run mid 70's. Fast? No. But it rides good and is a kick in the pants to drive. It accelerates real hard which is more fun to me than a huge top speed.
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Since you have a vdrive if you did a re gear could you pick up a few mph? I know you'd lose acceleration but do you think you could gain alot on the top end?
Doubtful. Probably lose mph since I might not be able to pull a larger gear. The trick to these is to find that happy medium between hp/gear/prop pitch. I'm spinning an 11 1/2x15 pitch 3 blade right now to about 5900rpm with 18 gears which is right about perfect for my setup. More gear and I might not be able to pull enough rpm to get the motor to its max power range.
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Doubtful. Probably lose mph since I might not be able to pull a larger gear. The trick to these is to find that happy medium between hp/gear/prop pitch. I'm spinning an 11 1/2x15 pitch 3 blade right now to about 5900rpm with 18 gears which is right about perfect for my setup. More gear and I might not be able to pull enough rpm to get the motor to its max power range.
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Dumb question of the day...
Vdrive gears... The higher the number the better acceleration? And the lower the number the better top end? How fast could a 21 rc handle before it became unstable?
Dumb question of the day...
Vdrive gears... The higher the number the better acceleration? And the lower the number the better top end? How fast could a 21 rc handle before it became unstable?
Your turned around.... the higher the gear, more top end...lower gear, more bottom end/acceleration
Are you just that heavy? Think you'd see a gain if you had an I/o? Cool boat regardless just seems like 700 should get ya more speed
With performance apps, yes. But Some of the 24' spectras ran underdrive boxes. Just to keep things interesting.
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700 in an I/0 should be a hundred or close to it.
Do you tell yourself that when you go to sleep at night so you don't dump more $$$ in your motor????:skull
How fast is 1500hp, 55 gears, 12x17 prop@6300rpm?
My old 22' v-drive 540TT @1108HP 38 gear, 11.5x15 prop@5800rpm=102mph
Colburns 20' v-drive 468TT went thru the kilos in the 70s @105mph, I think Spanjians blown 20 was about a shade slower.
I heard several of the high end built 21s, (including Lees Dads boat) claiming 118-120mph.
With zero prop slip it calculates to 157mph doing the math. The big variable is prop slip which partially is a function of drag
Interestingly enough that second boat calculated to 113mph with zero prop slip. It was probably pretty efficient.
Doubtful. Probably lose mph since I might not be able to pull a larger gear. The trick to these is to find that happy medium between hp/gear/prop pitch. I'm spinning an 11 1/2x15 pitch 3 blade right now to about 5900rpm with 18 gears which is right about perfect for my setup. More gear and I might not be able to pull enough rpm to get the motor to its max power range.
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Hmm.. I rode in Lynch's boat at 113, felt faster than mine, but I wasn't driving... my pile has around 1000 hp, 38's in the box, 11.75 X 16.5 Menkins 3 blade. I can hit 5400 with a little more than half throttle, I've stood on it from there a few times but not about to look at the tach? Its a old beat up Spectra but I wonder???
Did you get that speed from gps or radar?
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10% slip and its still better than 140!!!
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Ya but I think it is more than 10% with a v-drive often times.
My thoughts are that lift from strut angle plays into it. If your strut angle is 8* then with 0*=100% and 90*=0% then 8* would equal 9%. Even higher when you include the boat carrying the nose. So I'm thinking that 10% loss just in this would not be unreasonable. Then factor in prop slip on top.
My guess is that this also gets worse with speed along with prop efficiency, which is the reason that it starts to take way more horsepower to go a little faster with a v-drive. It's probably also one of the reasons outdrives are so efficient, you can dial the prop angle out at high speed.
All in all I still love v-drives
Exactly. Prop is way under the boat on a v-drive. Out drive will always be more efficient. But getting one to live behind 1000+hp can be exciting. And expensive.
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And, temporary
And Fuckin GAY!!!!!:skull