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Old 09 January 2011, 13:38   #81
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I would go and check your information on the above - not sure where you got all of that from but as far as I know it's all a bit different to that.
WTF do you know about it?
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Old 09 January 2011, 13:58   #82
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Ok, I hope Jean-Charles doesn't mind, but I have uploaded a couple of pics of the boat as it is. I don't know what position
the lift was in but in the second it would appear he was accelerating so I doubt that it would be at his highest point.
In my opinion the the engine needs to be lowered. I have included a quick picture of ours just to act as a guide at the bottom.
I have already told him how much I admire the black tubes with black engine. Top job


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Old 09 January 2011, 14:05   #83
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Originally Posted by Cookee View Post
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Well to be technical... to turn the 150 into the 150HO is just a map. The 200 to 200HO is a completely different engine, the 200 is 60deg small block and the 200ho is big block 90deg. The 200ho produces 217hp but it is not a racing engine, rather a version of the 200 designed for heavier boats. The 225ho is just a map and a different gearcase, currently the L2 which has low water pickups for those who run them ridiculously high on bass boats, and the 250ho is a 300hp with the racing L2 gearcase and a slight detune. The certification for outboards means they can be +/- 20% of rated hp, and the 250ho is generally regarded as having over 270hp at the prop shaft. Bear in mind however that all HOs are designed for the Yank bass boats and the gearcases are not designed for offshore boats like ours. This is the same for all the Mercury XSs and ProXS, but the Evinrude gearcases are regarded as their weakest point in the racing scene compared to the mercs, some have even bolted on an OMC V8 gearcase to compensate.
I would go and check your information on the above - not sure where you got all of that from but as far as I know it's all a bit different to that.
WTF do you know about it?
Well it's come from listening and reading on here and on the etec Owners group forum. If you think it's different then I really would like to know how, many people have different views on the HOs and XSs but AFAIK they are all regarded as having around 15-20% more than rated. Same with Yam Vmax.
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Old 09 January 2011, 14:05   #84
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Ok, I hope Jean-Charles doesn't mind, but I have uploaded a couple of pics of the boat as it is. I don't know what position
the lift was in but in the second it would appear he was accelerating so I doubt that it would be at his highest point.
In my opinion the the engine needs to be lowered. I have included a quick picture of ours just to act as a guide at the bottom.
I have already told him how much I admire the black tubes with black engine. Top job


Hi Oliver,

No pb about the pic. But I think they are very representative. Indeed the man at the wheel is not me but one my friend and he was trying somethin with the lift.

But anymay you may right I will lower the engine as soon as possible.

Other thing I forgot to say is that the top speed is reached with the lift between 2cm 2,5cm if its clearance. Which makes the total height of the anticavitation plate between 10cm and 10,5cm above the hull at WOT.

Hope it will help.

Jc.
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Old 09 January 2011, 14:07   #85
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Hi Oliver,

No pb about the pic. But I think they are very representative. Indeed the man at the wheel is not me but one my friend and he was trying somethin with the lift.

But anymay you may right I will lower the engine as soon as possible.

Other thing I forgot to say is that the top speed is reached with the lift between 2cm 2,5cm if its clearance. Which makes the total height of the anticavitation plate between 10cm and 10,5cm above the hull at WOT.

Hope it will help.

Jc.
You might like to remove the [img] things from your post, it clutters up the thread me putting big ones in the first place, but having them a second time makes it a little hard to navigate. Just click "edit" in the bottom right corner then delete the lines of text which are [IMG] there should be three.
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Old 10 January 2011, 08:56   #86
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WTF do you know about it?
I raced against a 200HO with an XR2 (barely 195hp) so I did my homework and I also raced XS's

Evinrude have never published any performance figures for their HO range, they were a cheat for the Bass fishing boys who were limited by horsepower and were only 10% over not 20%. Only the latest XS is overpowered, every XS before 2010 was what it said on the label. Bass boats use Sportmaster gearcases and the Evinrude box is the same for offshore and in Offshore racing it's the saddle that breaks - I've seen it. Generally a Mercury saddle and gearcase with a low water pickup has been hard to match for many years, especially the 15" Offshore leg which is why they have been so popular, it's a shame that the other manufacturers have never tried to match them with similar equipment.

Vipermax - Can I take it that the photos show the motor jacked up? You should be able to get the boat stable with the engine jacked up - at worst it will cause problems with acceleration and cornering, the height of the powerhead will obviously not help but if you can get the prop to bite rather than slip then it shouldn't be the cause of your problems - being able to drive the boat would help assess what the issues are. I am more concerned by the heavy steering - at what trim levels does this occur? If it is still occurring when the motor is trimmed out then I would address this first once again by changing the prop - it's easier than cutting out your transom!

I don't have static photos showing my engine heights for the race boat, but it was stable at over 90mph jacked up as high as it would go!
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When a boat looks that good who needs tubes!!!
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Old 10 January 2011, 09:14   #87
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I raced against a 200HO with an XR2 (barely 195hp) so I did my homework and I also raced XS's

Vipermax - Can I take it that the photos show the motor jacked up? You should be able to get the boat stable with the engine jacked up - at worst it will cause problems with acceleration and cornering, the height of the powerhead will obviously not help but if you can get the prop to bite rather than slip then it shouldn't be the cause of your problems - being able to drive the boat would help assess what the issues are. I am more concerned by the heavy steering - at what trim levels does this occur? If it is still occurring when the motor is trimmed out then I would address this first once again by changing the prop - it's easier than cutting out your transom!

I don't have static photos showing my engine heights for the race boat, but it was stable at over 90mph jacked up as high as it would go!

Thanks for your concerned cookee.

Yes on the picture the jack is in up position. But not at the maximum height I think.
Concerning the prop I have been looking everywhere for tempest plus 25 or 26 in LH but I can't find any. So I think I will go for a Rev 4 25 lh which has got the same diameter as the tempest plus. What do you think ?

Then concerning the hard steering is has occured only with Bravo 1 26 and 28 and Maximus 26 ( I have not try other pitch). So I think it comes from the diameter of the prop which are bigger than tempest (no steering pb with the tempest 23).

Finally the boat is stable at top speed at WOT no pb. It is going side to side only when I reduce speed. And to avoid this effect I have to put the throttle back on.
But it is important to notice that the top speed is reached with the jack at only 2-2,5cm of height (so with the engine at 10-10,5cm above the hull).

I think I may (as said Oliver) lower the engine by 1 hole on the transom and then use more my jack to compensate the lost height. What do you think ?

Thanks.

Vipermax.
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Old 10 January 2011, 09:27   #88
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Have you tried lowering the engine on the jack before reducing the throttle? If you lower the engine one bolt hole it will be that much lower at its lowest position which may help.

You don't mention the trim levels at which the steering becomes heavy?

Not familiar with the Rev 4 - is that a four blade like the Bravo?
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When a boat looks that good who needs tubes!!!
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Old 10 January 2011, 09:37   #89
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I raced against a 200HO with an XR2 (barely 195hp) so I did my homework and I also raced XS's
....and?
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Old 10 January 2011, 09:39   #90
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Have you tried lowering the engine on the jack before reducing the throttle? If you lower the engine one bolt hole it will be that much lower at its lowest position which may help.

You don't mention the trim levels at which the steering becomes heavy?

Not familiar with the Rev 4 - is that a four blade like the Bravo?

Yeah I have tried to reduce the height first but the phenomea still here.

For the trim:
- With the bavo it started at 1.7 and at 2.O and more the boat is totally undriveable
- With maximus it started at 1.9 and at 2.1 and more the main big issue.

Yes the REV 4 is four blade like the bravo 1 but in a smaller diameter 14-5/8 against
15-1/4 for the Bravo 1 and 15-5/8 for the Maximus (5 blade).
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