First boat, Delta Force 35" Pirate

[millzee]

I guess I'll get my order in tonight and start the rebuild, this time focusing more on the stuffing tube. thanks for the advice.

[Chuck E Cheese]

i agree with keith. you have to make sure that the stuffing tube is supported well at the end as well as the motor supported well. this is why a motor that big needs support on the rear, so it doesnt move when spining 30k rpm. it may look good on the stand but put a load and high rpm on in and i can almost guarantee that your homemade motor mount is flexing. it looks like 1/8" bar stock which flexes alot. i truly believe that this motor mount is moving under power. when i build mine i will be using a williamson 1717 mount with rear support.

[rearwheelin]

Millzee , my question to you , was there anything other supporting your stuffing tube besides the spray in foam ? If spray in foam was the only thing holding the end of your stuffing tube then that is the cause.......build a solid support for the stuffing tube end, something that will not crush and smash like spray foam.....Your motormount looks good to me as long as it doesn't flex alot, motors are like gyros and wont wobble at the rate your stuffing tube is reamed out unless there is something majorly wrong and if that were the case I don't know how the motor stayed together.....I have had front only supported 1527's runnig 70+ and never any issues at all, make sure that if things are flexing that yor stuffing tube stays inline with your collet....

[millzee]

I finally got the footage loaded

http://www.youtube.com/watch?v=tK0ITqCORmQ

From this you'll see what happened, "stupidity" on my behalf. The boat was running wet but had I had the chance I was going to re-adjust the stinger as it was angled slightly down, I'll just have to rebuild and try again. What do you think?

[millzee]

I finally got the footage loaded

http://www.youtube.com/watch?v=tK0ITqCORmQ

From this you'll see what happened, "stupidity" on my behalf. The boat was running wet but had I had the chance I was going to re-adjust the stinger as it was angled slightly down, I'll just have to rebuild and try again. What do you think?

Whilst watching the vid I have noticed that both the first and the second run go for about 3minutes, it's amazing how quickly time flies when your having fun, I was planning on only 1-2minutes each run.

[millzee]

here's a few pic's of what the stuffing tube was, It also has a 4" ply wedge under it which cant be seen in these pic's, I had to stop digging as I went to use the dremel and the misses came out to the shed with a nasty mouthfull of words due to it being 1am here and the noise woke her up, I guess I'll have to cut the rest out tomorrow.

[rearwheelin]

here's a few pic's of what the stuffing tube was, It also has a 4" ply wedge under it which cant be seen in these pic's, I had to stop digging as I went to use the dremel and the misses came out to the shed with a nasty mouthfull of words due to it being 1am here and the noise woke her up, I guess I'll have to cut the rest out tomorrow.

Doing the right thing , also I would stay away from insulating the stuffing tube because it could allow excesive heat buildup too.........Ha Ha Ha , your old lady gripes over boats too !

[millzee]

Doing the right thing , also I would stay away from insulating the stuffing tube because it could allow excesive heat buildup too.........Ha Ha Ha , your old lady gripes over boats too !

at least this new boat has got her off my back about the truck

I'm also using this oppatunity to redo the cooling lines, I'll swap the copper to aluminium and put in side outlets, when I ran it the other day with the rear outlets, I really had no idea if water was going through it until I pulled it out and blew the lines out. I've got a few idea's on how I'll try to do the tube now and I will make sure they have plenty of air around it, I will hopefully get it back in action tomorrow and ready for another run on the weekend.

[millzee]

here's a pic of the hull after I've dug out all that failed tube, I've left the bottom 5mm of ech bit of ply as I may use them for some support to the new tube. I have put a few pic's here to ask the question, am I on thr right track with this new tube, I've gone with the 1/4" tube and made a 7/32" bushing to go onto the front/coupler end, as one of you guy's suggested I've flared the end of the 7/32" bushing as I thought this was a great idea. The 1/4" tube goes through the transom and into the stinger as far as I can push it, I have bent the tube into shape as close as I think I can so when supported I can push the .187 drive shaft streight into the coupler, the shaft spins very easily but it does make a little bit of noise tapping the brass(I would assume the grease will fix that).
So before I start making up the supports for the tube I would love a bit of feed back as to how I'm going with this attempt. oh, one more thing, willl ca glue be enough for the bushing or should I attempt to solder it?

[marko500]

All I did was use a little CA on mine and it has held ( i stink at soldering). Also put a short piece of shrink tube over the end of the stuffing tube and the cable near the coupler and then heat it carefully. It will act as a water seal and keep water from coming up the stuffing tube into the hull.
Mine makes a slapping noise when you turn it but once in the water under load it will be quiet and yes the grease will help too.
Also when you put the shrink tube in make sure the shaft is greased and inserted into the coupler so the shrink will shrink to the size of the flex and onto the stuffing tube. Make sense?
Sometimes I have a hard time explaining something, that's why I'm not a teacher! LOL

Mark

[millzee]

All I did was use a little CA on mine and it has held ( i stink at soldering). Also put a short piece of shrink tube over the end of the stuffing tube and the cable near the coupler and then heat it carefully. It will act as a water seal and keep water from coming up the stuffing tube into the hull.
Mine makes a slapping noise when you turn it but once in the water under load it will be quiet and yes the grease will help too.
Also when you put the shrink tube in make sure the shaft is greased and inserted into the coupler so the shrink will shrink to the size of the flex and onto the stuffing tube. Make sense?
Sometimes I have a hard time explaining something, that's why I'm not a teacher! LOL

Mark

thanks mate, that makes sense.

[Chuck E Cheese]

looks good to me

[millzee]

so I've got the tube all glued in and lined up so the flex shaft slides into the opening of the coupler with no issues, the flex does have a little bit of resistance once it's about 1/2-3/4 of the way into the coupler before it hits the motor shaft, will this be ok? I hope it's all good, I am yet to glue the 7/32" tube bushing into place, I just wanted to make sure the gap was ok before glueing, should I extend it out a little bit to close the gap more or will the gap in the picture be fine?

[rearwheelin]

The gap is great !

[marko500]

Gap looks fine, don't forget a piece of shrink tube to seal out water.

Mark