fastest 4 stroke

**RBT** · 11-04-2010, 04:34 PM

wow, now that you have all stated the horror if watching that jackplate, before I saw that all I could think of was OMG that poor skeg!
COOL as hell to see it go, congratulations.

RT

**patchesII** · 11-04-2010, 08:37 PM

If I saw my jackplate doing that it would get replaced before the next trip to the lake

**DRHOBACK** · 11-04-2010, 10:34 PM

not a case for or against because I have not used a Bobs, but they do advertise an "extreme series jackplate" for heavier/higher hp engines.

**Instigator** · 11-05-2010, 04:46 AM

Originally Posted by DRHOBACK

not a case for or against because I have not used a Bobs, but they do advertise an "extreme series jackplate" for heavier/higher hp engines.

Yep. Remember too that most were not advertised for the OMC V-8 which was 550 lbs and the Honda is heavier than that. Plus jacked to the moon.

**Markus** · 11-05-2010, 05:26 AM

Originally Posted by Instigator

Yep. Remember too that most were not advertised for the OMC V-8 which was 550 lbs and the Honda is heavier than that. Plus jacked to the moon.

The CMC stainless steel plate was built for the OMC V8.

I used to have one.

They are extremely strong, but extremely expensive.

**Instigator** · 11-05-2010, 05:47 AM

Originally Posted by Markus

The CMC stainless steel plate was built for the OMC V8.

I used to have one.

They are extremely strong, but extremely expensive.

I know some were rated for that weight but most were not.

**Superbender** · 11-05-2010, 06:20 AM

I think I read that sweden said he reinforced that plate after the video was made

**Mark75H** · 11-05-2010, 11:17 AM

Great video ... gives me ideas for some of rig

**Deason** · 11-05-2010, 12:14 PM

Dont know if anyone is interested but the artical on the yammi sho 250 4 stroke it ran 86 on a Alli xb21 1350# with 2 people gear and a 15x27 4 blade ss, I do realize 86 is not 100 but sounds sweet with a stock 4 stroke, may not be but i have decided to put one on a 98 xb2003 its my winter project may be a disaster but cant find where anyone has tried it and wont be first time i made a goof

**Forkin' Crazy** · 11-05-2010, 02:38 PM

Cool videos!!! Congrats on the speed! Quite an accomplishment! How about some photos? That is a good looking hull for sure!

Originally Posted by Instigator

Can't believe the gestapo moved this thread! Get a grip.

Really.

Must have taken a break from counting beans.

**whipper** · 11-05-2010, 03:10 PM

GREAT VIDEOS SWEED!!!! Im very impressed with the setup youve done with the Honda. Transom mounted pickups good idea because I was wondering in the first vid how your water pressure was. Did you block off the water pickups on the gearcase? What gearcase mods do you have? Also you might look into a skid plainer like the Allisons have. It will deflect the water from going up your Jackplate. It seemed to catch up there a lot in the vid and even brazed the corners of the plate at WOT threw some small wakes. Your hole shot will have way less drag so faster up and out also.

Very cool setup!! Your going to have a lot of Q with such a new School setup busting 100. Way to Go!!

BTW got some good picks of the whole package maybe under the cowl to if its not to top secret. Im impressed.

**stokernick** · 11-05-2010, 07:28 PM

Originally Posted by Deason

Dont know if anyone is interested but the artical on the yammi sho 250 4 stroke it ran 86 on a Alli xb21 1350# with 2 people gear and a 15x27 4 blade ss, I do realize 86 is not 100 but sounds sweet with a stock 4 stroke, may not be but i have decided to put one on a 98 xb2003 its my winter project may be a disaster but cant find where anyone has tried it and wont be first time i made a goof

I might suggest you contact Superbender,cuz if he hasn't tried it,he'll know someone who does!!

**John.Vaught** · 11-05-2010, 10:41 PM

I boxed my jackplate in on the bottom to reduce the water column that comes through it when I back down I wonder if thats why my jack plate doesn't do that or is it simply because im only running 50mph.

**kimswang** · 11-06-2010, 10:12 PM

Nice job Swede, or as they say in your neck of the woods "Mycket bra grabben !". Keep posting....

**Markus** · 11-07-2010, 07:24 AM

Originally Posted by sweden

http://www.youtube.com/watch?v=XCs87zSz4_Y
this is the boat a 24 ft twister cat weight total 950 kg
best speed 99,8 mph 1 per
98 mph whide 2 pepol
96 whide 3 pepol
94 whide 4 pepol
the goal is to run 103-104 mph whide a standar engine and hafter that put a charger on it

Great video and nice fatigue test of the aluminum in the jackplate.

Do you really need that much setback with a heavy engine on the transom? Doesn't the Twister generate aerodynamic lift?

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