Author Topic: Brendella tunnel (Read 10287 times)

propless · « **Reply #100 on:** January 05, 2012, 02:11:31 AM »

Ok, lots of updates to do here.

I got all the wood out from under the underside of the deck, what a pain in the azz that was.

Heres the pile of "extra" wood that came out.

Once all the mess was out from inside I decided to flip the hull to take care of its major glass work before going any farther. Theres just something not quite right about seeing your boat hanging upside down in the air.

Back on the dolly and ready for some BIG changes.

propless · « **Reply #101 on:** January 05, 2012, 02:31:40 AM »

Still had some of the old paint under there.

Started sanding it all off looking at things better and made few interesting discoveries. It was hard to tell exactly what was going on with the bottom of this thing while it was on the trailer (or on the dolly). But it was easy to see now. The keel is actually V shaped and it has a Delta pad.

Heres a shot showing the angle change from the actual keel line to the Delta pad.

And one showing the huge hump/angle change on the bottoms of the sponsons.

I dont like any of this !! So its going to ALL be changed.

I spent a lot of time on the phone with some of the gurus, talking about angles and tunnel depths and how the newer hulls are compared to this thing. It took a lot of planning, measuring, checking angles, over and over and over, but I finally came up with a decent plan to update the bottom.
Its going to loose the Delta pad and get the bottoms of the sponsons re angled to work with the new keel angle. This should help the hull run at a better angle through the water. It will open up the tunnels at the transom a bunch so it wont trap as much air under the bow (let the air flow under the hull better).

propless · « **Reply #102 on:** January 05, 2012, 02:56:30 AM »

I decided to start with the keel mods first.

I stripped it down to glass to get it ready for the work.

Then it was cuttin time. Took me a long time actually get up the nerve to do this. But I figure this stupid old pile of junk was hanging on to edge of a dumpster with one finger when I found it, so I might as well get creative with it.
I cut along the sides of the center pod and wedged the back down to create a straight keel line. I spent a few days looking at it, and measuring everything 10 times until I was happy with it. I also filled the old intake mounting holes from the bottom, got rid of the recess for the factory ride plate and did a little glass work on the area that I filled in for the pump set back.

Then I put a couple layers of glass on it to hold it together. Now I can pull the wood I used to hold it in place out of there and start glassin and grindin till its built back up to the right thickness and straight again.

Thats where I'm at for now, its out in the garage with a heater under it to help the glass set up nice. Once I get it built back up to be strong again I can put a rounded shape under there for a round keel intake. Then its on to the sponsons issues.

SuperJet · « **Reply #103 on:** January 05, 2012, 06:24:09 PM »

Dammit!

gettin shit done, this boat has come a long way man.

propless · « **Reply #104 on:** January 06, 2012, 11:55:02 PM »

Quote from: SuperJet on January 05, 2012, 06:24:09 PM

Dammit! gettin shit done, this boat has come a long way man.

Yea it has come a long way, I just hope someday it turns back into an actual boat.

Sleek Freek · « **Reply #105 on:** January 08, 2012, 07:27:17 PM »

glad to see you're still going on your brendella. interesting mods your doing on the bottom and I can't wait to see the out come.

jrork · « **Reply #106 on:** January 18, 2012, 05:04:26 PM »

Come on Jeff. Lets see what youre up to now

propless · « **Reply #107 on:** January 18, 2012, 11:55:42 PM »

Quote from: jrork on January 18, 2012, 05:04:26 PM

Come on Jeff. Lets see what youre up to now

No.

LOL, I actually haven't touched it, I've been kinda lazy about it. Its cold out there in the garage.

propless · « **Reply #108 on:** February 10, 2012, 12:47:20 PM »

Finally got some progress pics for everyone.

The keel / center pod is done (ish), it will still need some blending and a final straightening once the intake is set. But for now its good to go.

It feels good to finally start to see some real progress on this stupid thing. This is the first area that I can actually look at and see that there might be some hope for this old lump of glass.

Now its time to start chopping into the sponsons.

propless · « **Reply #109 on:** February 19, 2012, 01:36:43 PM »

I decided to tackle another project before jumping into the sponson issue.

I had to make a shoe for this stupid intake. Its a different size than a standard shoe (longer), so I had to make it myself. I figured I would just start out with a flat shoe and see where it puts me. Gotta start somewhere.

I cleaned up the shoe pad, it was a bit corroded and not exactly flat anymore.

Then I looked around in the spare parts pile and found a piece of 1/2" Aluminum. It was a piece of the old set back OB mount from the Daytona, so yea, I finally found a use for an OB part.

Marked out what I needed and broke out the precision cutting tools.

Got it cut and cleaned up a bit. Then kinda guesstimated where to cut for the leading edge. Had to make a guess as to where the angle from the inside of the intake would need to end up. I'm sure theres some kind of math to figure it out, but who has time for that.

Got the mounting holes drilled (mostly in the right spots

) and counter sunk the two front ones. A couple of the rear holes where slightly off, but nothing drastic.

Then grabbed the grinder and sander and ground out/blended the inside angle to match the intake. My guesstimate was fairly close, had to grind it back a bit, but thats better than cutting it to short.

All done, almost. Still need to cut the pad for the ride plate, and do a bit of blending at the rear of the intake fins.

berkbryan · « **Reply #110 on:** February 19, 2012, 06:29:32 PM »

good job looks great

GlassCutter · « **Reply #111 on:** February 19, 2012, 07:02:18 PM »

No guts, no glory ! You guys with skills make me sick. I can barely edge my lawn straight. Good luck with the project and keep those pix coming.

propless · « **Reply #112 on:** February 21, 2012, 09:47:02 PM »

Skills ?? Me ?? HA HA HA thats a good one !!

You should see me edging the lawn, looks like a 4th of July fireworks show.

I attacked one of the sponsons today. The plan was to drop the rear of the sponson (about 3/4"), and raise the bottom of the sponson at the dash area (about 2"), to create a more modern angle difference between the sponsons and the keel. As well as to get rid of the huge hump under there at the dash area.

I made my first main cuts and the damn hull sprung open and twisted all around like a wet noodle.

I just sat there looking at it and almost cried. It almost found its way into a dumpster today. It took me about 6hrs of twisting, bending, supporting, cutting and screwing in supports to get it back into the shape I wanted. Still more work to do, maybe another full day before its ready to tab it back together. But its getting there.

The first cuts

The end of the day, its getting there.

mobboss · « **Reply #113 on:** February 21, 2012, 09:53:51 PM »

i have been looking at every pic and waiting for the next installment! beautiful work!!! you have way more patiences then i ever had i would have taken a hammer to it, by now cant wait to see more pics!!!

Sleek Freek · « **Reply #114 on:** February 21, 2012, 10:19:15 PM »

when can I drop my brendella off ? (Sleek Freak)

propless · « **Reply #115 on:** February 21, 2012, 10:52:11 PM »

Quote from: pickleman on February 21, 2012, 10:19:15 PM

when can I drop my brendella off ? (Sleek Freak)

As soon as you finish it.

Now get back to work on it.

I thought that was you. Brad didnt change your screen name yet ?

Quote from: mobboss on February 21, 2012, 09:53:51 PM

i have been looking at every pic and waiting for the next installment! beautiful work!!! you have way more patiences then i ever had i would have taken a hammer to it, by now cant wait to see more pics!!!

I've smacked it with a hammer many times.

But for some reason (

) I just cant give up on it.

GT Jets · « **Reply #116 on:** February 22, 2012, 06:01:33 PM »

Quote from: propless on February 21, 2012, 09:47:02 PM

I made my first main cuts and the damn hull sprung open and twisted all around like a Wet Noodle.

And there it is folks...The Proppydella's new name....

Your a brave man proppy, a brave man indeed...

GT

propless · « **Reply #117 on:** February 22, 2012, 07:46:31 PM »

Quote from: GT Jets on February 22, 2012, 06:01:33 PM

And there it is folks...The Proppydella's new name....

Your a brave man proppy, a brave man indeed...

GT

Not yet GT, brave will be when I actually have to put it in the water a trust it to NOT kill me.

I did some grinding and rearranging of things today. The angles where a bit off last night, I actually had to drop the front of the sponson back down 1/2". Its all held together with wood blocks and metal straps for now. I'm going to let it sit for a few days and just look and measure for a bit before I start glassing, I dont want to have to cu it back apart.

Heres some side to side shots to show the final differences.

GT Jets · « **Reply #118 on:** February 22, 2012, 09:02:53 PM »

Quote from: propless on February 22, 2012, 07:46:31 PM

Not yet GT, brave will be when I actually have to put it in the water a trust it to NOT kill me.

I did some grinding and rearranging of things today. The angles where a bit off last night, I actually had to drop the front of the sponson back down 1/2". Its all held together with wood blocks and metal straps for now. I'm going to let it sit for a few days and just look and measure for a bit before I start glassing, I dont want to have to cu it back apart.

Heres some side to side shots to show the final differences.

I have a question, and seriously hoping it is not a stupid one......

What is keeping the deck from distorting beyond recognition....The intact side? It just seems to me you may have a difficult time making the deck sides match...I would frame it up in a jig so that things don't get...Well, unrecognizable... $:-\$

GT

propless · « **Reply #119 on:** February 22, 2012, 11:54:24 PM »

Quote from: GT Jets on February 22, 2012, 09:02:53 PM

I have a question, and seriously hoping it is not a stupid one......

What is keeping the deck from distorting beyond recognition....The intact side? It just seems to me you may have a difficult time making the deck sides match...I would frame it up in a jig so that things don't get...Well, unrecognizable... $:-\$

GT

Thats actually a good question. And I dont know why the deck is holding its shape, but it is. It actually holds its shape better than the bottom. I did have braces from the floor to support it when I first made the cuts, but it stayed in shape without them. The bottom is another story, what twisted around so bad was the tops of the tunnels. I guess because there flat. I think the deck is fairly thick over the sponsons (unlike the center section) and it has a pretty good angle/slope/curve out there. I'm sure all that has alot to do with why it held its shape.

I think they might have been running low on glass when they built the bottom of this one. Heres a shot of how thick the inside walls of the sponsons are up front. I know it looks like it says 3/4" on the wrench, but thats a 1/4" wrench.

This is one of the reasons I'm going to add the second bulkhead under the bow.

berkbryan · « **Reply #120 on:** February 23, 2012, 01:06:08 PM »

I have say your crazy I would not have the balls to cut up my hull but it looks good

propless · « **Reply #121 on:** February 23, 2012, 05:43:12 PM »

Quote from: berkbryan on February 23, 2012, 01:06:08 PM

I have say your crazy I would not have the balls to cut up my hull but it looks good

Finally figured that out huh. Everyone else around here has known that for a looooong time.

ROMPERSTOMPER · « **Reply #122 on:** March 27, 2012, 05:56:50 PM »

amazing job. commending confidence and patience. awesome documentation and pictures. I as well as scjb followers will appreciate this thread more than you know

. I am currently in the process of replacing the stringers floor and seats in my dads 86 ski centurion sp. I have been as well taking pics and will post the job when finished. just cut the the stringers and bonded them to the hull using cheep epoxy cocking and weights. wish i wold have read this yesterday. This is why my dads boat is my first stringer job, not my big pony jet. I'm gonna beat it up in snore on a windy white cap day and try to beat it to hell without sinking it, lol, and ill know if I should try edging my grass

. this one would be in the dumpster if the trailer was not brand new. I have a lot of ?s but need to prep rite now, Ill be back.

Its been a while since Ive been On here. My life has changed a lot since the accident 2 yrs ago and I really miss scjb peps a lot. my boat is undergoing some motor changes so I can afford fuel to drive it. a up tune to run pump gas if that makes sense. "less cr, more cam". It popped out of the water while I was data logging the afr and tuning the ecu and tacked 10,500 rpms for 1 mila-sec and mushroomed a push-rod, destroyed a shaft mount rocker, and sure enough started to spin a rod bearing

on the day I had a perfect afr tune across the whole rpm range. My dumb ass didn't put a rev chip in my 7al box because I had it set at 7200 in the ecu. well I guess Fast efi ecu's "fuel air spark technology" are not fast enough for a 1200hp high revving jet that pops out or catches air in the pump. expensive lesson on my part. to top it off when the boat popped back in, the force difference at that rpm not only loosen all the intake bolts, hand cover bolts, it cracked all around the shoe and intake on the bottom. Ive been staring at it a lot and am wanting a cat, tunnel, gull-wing, or a very fast pontoon boat but cant afford one unless propless decides to let his finger lose,lol jk. cant make a decision on that. Ill wait till after some dyno time. that monster gives me a tickle in my pants every time it fires up,as well as scares me a bit till I some seat time. Good to see a lot of you still posting. Nice job on the site changes Brad.

MBlack · « **Reply #123 on:** March 27, 2012, 06:16:20 PM »

Quote from: ROMPERSTOMPER on March 27, 2012, 05:56:50 PM

amazing job. commending confidence and patience. awesome documentation and pictures. I as well as scjb followers will appreciate this thread more than you know . I am currently in the process of replacing the stringers floor and seats in my dads 86 ski centurion sp. I have been as well taking pics and will post the job when finished. just cut the the stringers and bonded them to the hull using cheep epoxy cocking and weights. wish i wold have read this yesterday. This is why my dads boat is my first stringer job, not my big pony jet. I'm gonna beat it up in snore on a windy white cap day and try to beat it to hell without sinking it, lol, and ill know if I should try edging my grass . this one would be in the dumpster if the trailer was not brand new. I have a lot of ?s but need to prep rite now, Ill be back.

Its been a while since Ive been On here. My life has changed a lot since the accident 2 yrs ago and I really miss scjb peps a lot. my boat is undergoing some motor changes so I can afford fuel to drive it. a up tune to run pump gas if that makes sense. "less cr, more cam". It popped out of the water while I was data logging the afr and tuning the ecu and tacked 10,500 rpms for 1 mila-sec and mushroomed a push-rod, destroyed a shaft mount rocker, and sure enough started to spin a rod bearing on the day I had a perfect afr tune across the whole rpm range. My dumb ass didn't put a rev chip in my 7al box because I had it set at 7200 in the ecu. well I guess Fast efi ecu's "fuel air spark technology" are not fast enough for a 1200hp high revving jet that pops out or catches air in the pump. expensive lesson on my part. to top it off when the boat popped back in, the force difference at that rpm not only loosen all the intake bolts, hand cover bolts, it cracked all around the shoe and intake on the bottom. Ive been staring at it a lot and am wanting a cat, tunnel, gull-wing, or a very fast pontoon boat but cant afford one unless propless decides to let his finger lose,lol jk. cant make a decision on that. Ill wait till after some dyno time. that monster gives me a tickle in my pants every time it fires up,as well as scares me a bit till I some seat time. Good to see a lot of you still posting. Nice job on the site changes Brad.

Good to see u on here again Jimmy. I havent been on here for a long time either until about a week or so ago.

propless · « **Reply #124 on:** March 28, 2012, 02:17:27 AM »

Welcome back guys.

And ROMPERSTOMPER, With that kind of HP you need a new boat.

http://www.performanceboats.com/boats-sale/100107-mach-tunnel.html