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D-construction of D-rat 29 May 2014 20:12 #30634

Squirrel !

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D-construction of D-rat 29 May 2014 11:21 #30606

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Don't y'all get all het up about this project. I tend to work on something when I am inspired to do so.
I may see some other shiny thing and off I go. If you are in a big hurry to see one of these, do your own.
Looking at you tube videos of jet jons, I have seen several different variations of weight placement. I agree that the more weight to the rear, the better.
I have to remain within the boundaries that my fabrication skillset and my limited facility/tools provide.

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Last edit: by unclbuz.

D-construction of D-rat 29 May 2014 02:11 #30587

Here's the point. In the last two yrs we have seen two of these projects started ,but neither to hit the water,,yet. I don't know why,, but CG on these jet drives is critical . Too far aft CG,,no big deal. The nozzle and trim tabs compensate pretty easily . Too far forward,,,your kind of hosed. The trim tabs won't help. The nozzle trimmed up will just be squirting air. I'm just playing devils advocate,,,before the first cut. Not that I give a hoot about the hull,,,after-all it was rescued from a scrap yard and was basically a barge. I just want this to work. ;)

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D-construction of D-rat 29 May 2014 02:09 #30586

FWIW, I'm really impressed with what you're doing and what you've done. I had the same idea a long time ago but never pursued it. I'll be watching your progress very closely and wish you only the best results.
I'd also like to know more about that "New Zealand" boat. What was the deal with that?
Wet Willie
"friends to the end."- Russ Cleaton

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D-construction of D-rat 29 May 2014 01:50 #30582

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Perhaps a bigger motor, but relative to the seat backs, I think the motor may be about the same, it's just that the boat's tiny....

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D-construction of D-rat 29 May 2014 01:30 #30581

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That motor looks much bigger then what Don plans on using.

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D-construction of D-rat 29 May 2014 00:52 #30574

Remember the New Zealand boats . They built a boxlike extension to the transom to shift the entire unit aft.


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D-construction of D-rat 28 May 2014 19:54 #30553

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Eagle127 wrote: Wow Don,,that puts the engine pretty far forward . Think the CG will be ok ? Is it possible to cut and move back ?? :unsure: Or rear steer ! :)


It remains to be seen. The fiberglass hull is 1/2" thick and the jet pump, nozzle and ride plate/reverse bucket are all further back. The motor will be just about where the fuel tank was.
I have about a foot to play with between the motor mounts and the bulkhead, so I could re-position the bulkhead and move the seat back a bit (and extend the deck a like amount)

Rear steer would only be possible if I put a saddle over the jet pump!

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D-construction of D-rat 28 May 2014 18:36 #30548

Wow Don,,that puts the engine pretty far forward . Think the CG will be ok ? Is it possible to cut and move back ?? :unsure: Or rear steer ! :)

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Last edit: by Eagle127.

D-construction of D-rat 28 May 2014 14:22 #30543

Howdy Don,

Got it!

Sincerely,

Troy

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