06-16-2006, 10:27 PM #1
One unusual safety concern on the GPR
You guys might want to check your plastic steering nozz every now and then for cracks n such.
I had one explode on me at MB-2 while at WOT - it was not a great feeling and i can't stop thinking about it. I keep wondering what if it would have happened durning the radar run where at the last second i am suppose to turn sharp to miss the pontoon radar boat??? I would have bailed out and hoped for minimal injuries to others.
So please be careful and keep an eye on this.
06-16-2006, 11:21 PM #2
Thanks for the heads up John.I heard if you paint your steering nozzle pink or green or yellow,they will crack. :P
Do you have a pic,were it cracked?
06-17-2006, 06:51 AM #3Originally Posted by WATER WOODY
06-17-2006, 07:11 AM #4
I'm so glad that didn't happen to you as you were aiming at the radar gun.
This incident makes me even want to keep my aluminum extended nozzle on even more now.
06-17-2006, 07:54 AM #5
Philip did some testing with the Pro-tec extended nozzle and if i remember right,the speeds were the same compared to a stocker. This might be the safer way to go.
06-17-2006, 08:14 AM #6
- Join Date
- Nov 2005
- North East Mo
are the Pro tec & R&D nozzles the same size as the stock ones?
06-17-2006, 09:02 AM #7
I remember some posts on this with the O/E cracking at high speeds.
I think it was FERCHO who cut back the extended PROTEC nozzel as in its extended set up he posted as its lenght was detrimental by his findings
06-17-2006, 09:54 AM #8
06-17-2006, 10:42 AM #9
Had this happen on my SLX also after i triple piped it and picked up a ton of speed and rpms...Judging by the little pieces that were still stuck in there near the mounting bolts I think this is what happens:
-one side or the other where it bolts up cracks and then the whole nozzle gets pushed off angle into the jet-stream...That's all she wrote at that point as with as much force as our jets make it snaps it right off...
Was toying with a poor kid on a 3 seater Honda at my local lake...Finally got tired of playing with him and gunned it past him heading towards shore...Got ready to turn and there was no turn (oh shit!!!)...
All I could do was pull the lanyard, bail off and let the ski do what it was going to do...
Luckily it was a mud bank with very shallow slopes so it just slid up on the bank about 10-15' with no damage other than maybe some minor scratches on the hull (and my pride)...Of course pulling that sucker back in the water was fun...
06-17-2006, 11:09 AM #10
lbs of thrust
Well, for real world numbers under operating pressure
i.e.) for example A 1999 Kawi STX 1100 makes 803 pounds of thrust. A stock Kawi 15F makes 957 pounds of thrust.
A modified GPR is probably making over 1000lbs of thrust if not more.
This has to be alot of stress on that stock plastic nozzle under operating conditions.
Is it possible that a light scratch/score prematurely caused the condition to get worse? Kind of like how a "hard object" for example; ceramic tile can easily be broken once scored.... ?.......
Its possible we have surpassed the design limit of the "stock" plastic nozzle.
Once we have modified our boats and made them go 10-15mph faster then OEM, I am sure that everything else needs to be looked at for strength integrity too.
Just like our Pump tunnels
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