Freestyle Who wants actual dyno numbers?

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wsuwrhr

wsuwrhr

Purveyor of the Biggest Brapp
Location
Alta Loma, working in Upland
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Crappy un-edited sideways thanksgiving picture
 
wsuwrhr

wsuwrhr

Purveyor of the Biggest Brapp
Location
Alta Loma, working in Upland
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Another Brandie new unused VF2 that I am hooking up today. another Crappy un-edited sideways thanksgiving picture.

Dasa buys very few outside parts, we build everything in house we need to lay down the power.
 
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theiba

theiba

Can't get a ski stuck...
Location
Southern NJ
Vumad said:
Don't think I don't agree. I simply don't see any of the motor builders doing this. I was trying to curve the discussion to talk about something that might be possible to be done with assembled skis, to compare set ups at a freeride, since that to me would be a plausable scenario that could happen.
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Gotcha. I actually like the idea of measuring thrust as well. I think it would be beneficial to offer a complete package saying 'Hey, our motor offers X amount of power measured in thrust along side of actual dyno numbers'. That being something they can tune to maximize at no cost to the end user considering they usually have these kinds of extra parts available to begin with. These finalized combos could then be ridden by the pros to offer a 'braap analysis'.

In the end, the riders end up being happier they didn't have to spend thousands to figure out the best combo of parts for their big dollar motors.
 
wsuwrhr

wsuwrhr

Purveyor of the Biggest Brapp
Location
Alta Loma, working in Upland
theiba said:
In the end, the riders end up being happier they didn't have to spend thousands to figure out the best combo of parts for their big dollar motors.
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I am sure builders have some of this information already available to their customers.

Problem is with carte blanc tuning is different boat/rider weights and designs, pump sizes, pump cavities, nozzle sizes and dozens of other variable are all different AND CHANGING FROM YEAR TO YEAR.. Just too much to make ENTIRE packages for.

Also throw in customers who re-use their existing parts from their current setup do to cost constraints.


Brian
 
Aircraftsalz

Aircraftsalz

Thrust built Dasa Power
Location
Off site
Knowing how much Thrust a setup makes isn't going to help you... These big motors are going in A/M hulls that have big pumps, big pump intake tracks , with lots of setback, etc.... Say we measured my old Superfreak Dasa 1100 I know it would post big thrust numbers, but take that same setup and run it in a oem SJ I would guess it would drop 30-40%... I know this for a fact as I built a ski with the same motor, but different hull... The hull had a SJ pump and tunnel and guess what, you couldn't load enough water in the pump ...
 
Boris

Boris

The Good Old Days
Location
The surf-less coast
Damn, I didn't realize that all I needed to do was ask for the pictures.
Shait son, I'm impressed.

So how about an 800cc or 900cc shootout. I need a new motor.
 
Aircraftsalz

Aircraftsalz

Thrust built Dasa Power
Location
Off site
Boris said:
Damn, I didn't realize that all I needed to do was ask for the pictures.
Shait son, I'm impressed.

So how about an 800cc or 900cc shootout. I need a new motor.
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You know once you go Dasa there's no going back!

My new Dasa 900 is unreal, can't wait for my new motor
 
scottie mac

scottie mac

X-
Best post on here. Good think we don't race or ride dynos.

SM


waxhead said:
Let think about it
a triple cylinder runabout motor from a race boat makes about 260 hp is what we were told.
Thats with one pipe per cylinder and a much greater space between the cylinders adding to a huge advantage in the transfer port shape and volume.
As well as a much larger and better directed reed system, with side draft carbs
same msd ignitions and 48 novis or full rectums and they were able to rev out being a race engine.

And now we are saying a twin cylinder 701 based engine with only 180mm spacing between the cylinders and a bigger bore so hugely comprimised transfers and a single pipe system is making 200hp plus.
Sorry I dont believe it. Show us some dyno figures
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W

waxhead

wannabe backflipper
Location
gold coast
egbrig said:
If you look at the snowmobile engines of equal displacement they're getting the 200 plus hp out of their engines but @ 8200 rpm to 9000 rpm, and thats using twin pipe setups. So how are watercraft getting that number at 1000 rpm lower and on a single pipe? I've done some dyno testing and you can definately fudge the numbers but it doesn't do any good if your trying to make improvement. For a good engine its all about torque and responce, and that responce comes from a good package ie: pump, ignition, engine rev charactoristics. If your screaming for hp numbers than most likely you don't really know enough about the subject to understand what makes a good setup. I'll take a good setup over supposed peak power any day. Oh yea, its gotta be tuned right to even make it worth the effort, and if you think "just give me the jetting specs" is what tunning is, you need to pay some one to do it.
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bang on, and these engines also have a cvt so they dont have to pull from low rpm, so they can be built for a higher and peakeir out put. where a jetski has to pull from low down.
 
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W

waxhead

wannabe backflipper
Location
gold coast
wsuwrhr said:
So if I open the door and take a picture of DASA's own dyno(certainly not a rented one) with a motor coupled up to it would this thread go apesh it?

Who else could post their own similar picture?

I have said before, Dynos are good for nothing but tuning a combination of components in a closely monitored situation.
Noting changes and in what direction are those changes. Published Torque numbers aren't worth the pushed keys it would take to post them.

Brian
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While I admire your cad work I have to say if you think torque figures dont mean much then your very very wrong.
torque figures are what sends us down the lake.
hp sells torque moves isnt that the old saying.
If you have these engines on the dyno you would know what they make ??
why dont you post some charts you have made of the hp and torque curves
 
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