56" Cat. My First Boat build!

[tiqueman]

Looking great Twisted. Giving me motivation to build mine thats been on the shelf over a year now also w/ a "boat load of parts" in it. Dissappointing about the quality of your hull. I read about it on the reviews. Other than mine being a "very light lay up" the lamination is virtually flawless. To the point I feel bad cf-ing the inside because it already looks so nice. Anyway, great looking build.. Ill get to mine someday......

[ManuelW]

And for god's sake, please cut-off the stuffing tube even at the transom, its not intended to go inside the drive.

regards,
Manuel

[drwayne]

I assembled 4 of these same hullhardware in last 14 month.
http://forums.offshoreelectrics.com/...t-Genesis-twin

The TFL stinger drive needs brass tube inside.
The inside diameter of stinger is 9mm x ~75mm ( 6.4mm bush only at end ) , without the brass tube inserted the flex 'whips' under thrust load and made damage to brass and flex when finished outside stinger.
9mm suit 11/32 brass with teflon liner, as supplied these kits..

respect and regards
W

And for god's sake, please cut-off the stuffing tube even at the transom, its not intended to go inside the drive.

regards,
Manuel

[bruiser77]

Maybe thats because the motors are mounted so far forward and the flex shafts or so long? My stuffing tubes are cut directly at the transom and have not had one problem with driveshafts, drives or any kind of " whipping".

[MAMBA2200]

What are eBay bucks?

when you buy on ebay you earn them and every 3 months you get free money to spend on ebay the more you spend the more you get

[drwayne]

Maybe thats because the motors are mounted so far forward and the flex shafts or so long? My stuffing tubes are cut directly at the transom and have not had one problem with driveshafts, drives or any kind of " whipping".

For sure.
From memory the flex are 450 or 500 long
In the first 2 factory artr builds these were pre-installed, subsequent 2 'bare hull builds I cut to ~300, where none this whip occurred ( but I also stuck 1/2" of brass into tube )
It appears this builder has not shortened his flex.
W

[Cooper]

I assembled 4 of these same hullhardware in last 14 month.
http://forums.offshoreelectrics.com/...t-Genesis-twin

The TFL stinger drive needs brass tube inside.
The inside diameter of stinger is 9mm x ~75mm ( 6.4mm bush only at end ) , without the brass tube inserted the flex 'whips' under thrust load and made damage to brass and flex when finished outside stinger.
9mm suit 11/32 brass with teflon liner, as supplied these kits..

respect and regards
W

It really depends how much adjustment you want to make. If you are using the right size tube for the flex, with liner or not, there will be very little angle adjustment or the driveline will be kinked ( worse than whipping).
In my opinion for the distance of having unsupported flex shaft and considering where the fulcrum point is, and size of tube, and potential for pinching the shaft, I also end the stuffing tube about 3~5mm after transom.

[Cooper]

Oh and I usually install another bushing in them, just some more support on the smooth shaft end.

[twissted]

Thx for that. I think he must of thought that the stingers weren't mounted or something.

[twissted]

I have a wire wrap that I can install to the tube befor bending. this will keep it from everything you just covered.

[Cooper]

It really depends how much adjustment you want to make. If you are using the right size tube for the flex, with liner or not, there will be very little angle adjustment or the driveline will be kinked ( worse than whipping).
In my opinion for the distance of having unsupported flex shaft and considering where the fulcrum point is, and size of tube, and potential for pinching the shaft, I also end the stuffing tube about 3~5mm after transom.

I just saw that he is using 1/4 driveline, so I would have to add that I do not have the experience with 1/4 driveline. Sorry, I would however assume they are same as 3/16 just bigger!? For what it's worth.

[twissted]

56'' Catamaran 022.jpg56'' Catamaran 023.jpg56'' Catamaran 024.jpg
Working on the cooling system. I modded the 5.56 bullet casings to look like a exaust. I installed the cooling line before using JB Weld to hold them in place.

[ManuelW]

Mhh hard to imagine its desired to have the tube that far in the drive. A similar thing is for the HPR06/C5009 drives (not the bigger ones), but instead of the stuffing tube (brass/aluminium) just the teflon tube doesn't end at the transom but goes into the drive. If that TFL drive is 9mm ID it would also make sense for me, as almost any known teflon liners available here have an OD of a little below 9mm. Will also avoid damage to the drive housing, should ensure a smooth run and allow easier adjustment of the drive.
If the drive position works with almost parallel to the last step it will for sure also work with the stuffing tube that far inside the drive, I'd say its just really uncommon to do that here.

regards,
Manuel

[keithbradley]

I thought for sure those were Clecos when I first looked at the pic...after seeing it full size they look like some type of rifle ammo cases. I remember someone on this forum using those for exhaust sim, but I don't recall who it was.

[iridebikes247]

I laughed for a second when I saw the brass inserted that far in the drive. This didn't prevent me from rifling through my tool box to check the fitment of the parts and voila, perfect! Anyway the tube fits well and inserts very far into the stinger. With the flex liner in place and mhz flex safety/support bearing you could have a perfect driveline. I think some people ran into issues with these stingers developing slop? Anyway if that happens I don't see why you can't bore out the shaft and use a speedmaster 1/4 bushing instead. Anyway the boat looks great can't wait to see what it can do. Oh and fyi Twisted my super daytona hasn't yet hit the water and I bought it in September. Waiting on mhz support bearings and a hobbyking order.