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nzjetboating.com Forums => General Board => Topic started by: Kakapo76 on June 30, 2020, 18:11:34 PM

Title: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Kakapo76 on June 30, 2020, 18:11:34 PM
Hi Folks, Looking to pick up an old fiberglass hull for a resto project- because I need millions of unfinished projects!

Anyway, I want a light-ish fiberglass hull- something that is going to be a classic if not already a classic but is super capable in regards to wet rock boating. I would currently favor the J44 Invader as I love the look, but really want a boat that is the best of an era- so whaddya reckon? Let me know what gets your vote?

Criteria:

It must be an NZ design.
Must be a production model- no one-off specials
Prefer a lighter hull (no J53's need apply)
Must be able to boat a leaky tap flow think wet rocks and hot summers.
Prefer it to also be lake friendly- can the kids thrash a biscuit with it?

Also- if you have a hull preference, what engine/unit combo is the best fit?

 Its time to get tribal folks- let's see the team colors on display  cou
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: kbel on June 30, 2020, 18:53:19 PM
Here,s a video of some shallow water boating in my one owner Jet 44 Invader on the lower Waimakariri
Running a Ford V6 Engine coupled to a hamilton 770 3 stage jet unit.The boat was one of the last out of the mould built by the late Bruce Binnie at Jet Services Ltd in Sockburn. B))T
https://www.youtube.com/watch?v=YsjRVOWW2dE&t=392s
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Kakapo76 on June 30, 2020, 19:33:15 PM
I actually found your clips already  B))T b> b> b> brilliant stuff- post some more!
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: belmont on June 30, 2020, 20:00:27 PM
Jet 20 is my vote.  Fun boat to drive, goess anywhere.. and there is one in trade me in bits..
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Gravelrash T on July 01, 2020, 19:30:07 PM
If you want to lake boat as well as river then J32 would be the go with V6 and 2 stage 👍
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Warwick Marflitt on July 01, 2020, 21:12:09 PM

Jet20 with plastic bottom.
https://www.trademe.co.nz/motors/boats-marine/motorboats/auction-2671908760.htm?rsqid=294da77b7fe345a48b4ab23d0dcf51ea-004
Looks to be sold I hope that you're its new owner

http://www.jbnz.co.nz/yabbse/index.php?topic=20413.msg148560#msg148560
Plastic bottom J20
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Kakapo76 on July 01, 2020, 21:31:32 PM
nope not me- if it is sold? Looks a great wee boat but it's very similar in size to my current alloy boat- I need it a wee bit bigger to chuck the kids in the back. I like the look of a jet 32. I also have a line on a j44 mk1
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Ed Wicken on July 03, 2020, 09:27:30 AM
Jet44 Invader would fit your criteria pretty well and a stylish design to boot. My one in this pic has P76, Colorado 2 stage goes great and has travelled over many wet stone and skinny water runs, this pic is at Rockburn Chasm which was skinny to get to from the Dart River on the day.
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Kakapo76 on July 03, 2020, 11:19:31 AM
Hi Ed,

I have a line on a j44 mk 1 hull- looks like that might be the go. Was thinking of a falcon 4.1 and a colorado 2 stage- would that work?
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Matthewf/Norbert/TuiDog on July 03, 2020, 13:46:25 PM
Jet44 yes, but how about the "Gemini" made for the waimak and not quite as willing to swap ends as a 44??
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Ed Wicken on July 03, 2020, 17:03:48 PM
Jet44 yes, but how about the "Gemini" made for the waimak and not quite as willing to swap ends as a 44??
44s only swap ends once or twice in the hands of the inexperienced, all good after that  b> b>
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Ed Wicken on July 03, 2020, 17:09:30 PM
Hi Ed,

I have a line on a j44 mk 1 hull- looks like that might be the go. Was thinking of a falcon 4.1 and a colorado 2 stage- would that work?
yep that would work, you would then need back to back seats as the 4.1 is too long to have 5 forward facing seats, personal preference either way. Hard to beat the sound of a P76 thou *-)
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Kakapo76 on July 03, 2020, 18:04:24 PM
I would love to come to look at your 44 at some point if you have a free Saturday arvo?
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: kbel on July 03, 2020, 20:57:06 PM
A later video of my Invader in action on the lower Waimakariri.
One of the passengers who had been on a business trip from Spain asked me "what depth of water does your jet boat need?"   B))T
Please scroll back to the start for the full clip.
https://www.youtube.com/watch?v=2h4974LzPzY&t=164s
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Ed Wicken on July 03, 2020, 21:35:33 PM
You are welcome to come have a look, pm me and we can organize a suitable time
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Kakapo76 on July 03, 2020, 22:08:51 PM
Thanks, Ed, will do once the weather picks up a bit!
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Kakapo76 on July 03, 2020, 22:09:59 PM
A later video of my Invader in action on the lower Waimakariri.
One of the passengers who had been on a business trip from Spain asked me "what depth of water does your jet boat need?"   B))T
Please scroll back to the start for the full clip.
https://www.youtube.com/watch?v=2h4974LzPzY&t=164s

Looks like you were having a lot of fun playing the wee channels- what unit/engine combo are you running?
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Allen M on July 04, 2020, 10:40:29 AM
Have you considered a Fireball hull.
Just happen to have a spare one complete with a 752 pump, belly tank and sitting on a good trailer .
Bought it  to half bury it in my front garden as a landscape feature but I?ve decided it?s too good for that fate.
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Kakapo76 on July 04, 2020, 21:16:10 PM
Hi Alan, Maybe pm or call me with some details/ price, etc- I am in CHCH and it appears you are in Tauranga so might be a logistical challenge but I am open to all offers.
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Ed Wicken on July 05, 2020, 18:11:36 PM
If the jet44 Mk1 hull doesn't work out I have a  Jet44 Mk1 hull/deck/Screen available here in Prebbleton if you are interested, needs a crack repaired in front of intake but very sound all the rest of it. This was a boat we used for over 20 years and have owned since 1988 and is currently  a stripped out hull. It had a Colorado 2C unit and Essex V6 when we were running it
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Vaughan Ingram on July 05, 2020, 19:24:56 PM
Wow! Pauline will be smiling! Are you making room for some new additions??
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Kakapo76 on July 11, 2020, 23:40:20 PM
So I got a hull- Mk 1 j44, British racing green and years of white touch-up/ fence paint... Its got a Jet 32 windscreen- going to bin that for a proper 44 screen. It's not too bad condition if anyone is interested in it send me a message.

The plan so far is a 2 stage colorado and an AU falcon motor converted to carbs. Currently negotiating with my wife   00.t (Steve you owe me BTW  l-l ) as t the budget (there is none so it's going to have to be funded off the books so to speak).

Anyway- I am excited and will post the refurb as and when it happens. I still need to finish the Westlander repower first.
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: bobcat78 on July 13, 2020, 18:44:07 PM
Hi Kakapo76 keen on the J32 screen if you still have it cheers Marcus
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Kakapo76 on July 13, 2020, 19:35:06 PM
Hi Marcus, Currently promised to another forum member- to be fair I had another look today and there's a chunk missing and a decent crack so its pretty ordinary. I spoke to Plastic Fab in CHCH today and a new acrylic screen custom made is $350 so it's not really worth much - if it's not gone at the weekend I will get in touch with some photos.
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Kakapo76 on August 31, 2020, 15:19:46 PM
Looking for some info: Does anyone know what type of fibreglass resin would have been used in the Binney boats- I am now ready to start cleaning up this hull and dealing with 58 years of use/abuse on the hull and have been doing my usual youtubeiversity edumacation...

So question: Is it likely to be made of either a) epoxy based resin  b) polyester based resin  or c) vinyl resin ?

Its a bit critical as I do not want delamination issues in the future and I am hoping to do the repairs with polyester resins.

Any help would be appreciated- its a 1961 hull for reference.
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: johnmead on September 01, 2020, 10:53:30 AM
Hi Kakapo76, my first boat was 44 exactly like your picture, only with a black deck. It was a 1970, with a Zepher and Colorado single stage  with the small diameter shaft. I bought it in 1978 as it's 4th owner. Replaced the engine with a V6 and then replaced the unit with a Colorado 2C. Turned it over in 1981 and rebuilt the bottom from both sides, and as I remember it now, used chopped strand mat and resin, but don't remember what resin. Filthy job  C""
Eventually put the engine and unit into the hull I still have in 1983, and sold the hull. I think it's deck got changed to blue and it went down South some years ago. I have been looking in photo albums for pics but they are so old they don't reproduce well  >:(
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Kakapo76 on September 01, 2020, 11:42:45 AM
Thanks for the info John, I will probably go with laminating polyester resin as (at least in the USA-) it was the go-to product. Might have a chat to Fi-Glass and Hamiltons to see what they used back during that period.
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Ross Goldsack - JBNZ President on September 01, 2020, 12:26:17 PM
Try and get hold of Barry Uddstrom of Terrier jet boats. He has built glass boats for close to 100 years 😁
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: daveb on September 01, 2020, 13:20:46 PM
Hi, Yes polyester resin is the go..contact..NZ Fibregass Ltd, Panmure, Auckland, they will sell you in bulk,and ship to you, also get there filler which mixes with polyester resin for finishing,its much stronger than bog and sands up nicely.use acetone for cleaning drying before glassing, grind back all dead(delaminated) glass, you'll itch for months.. I"ve used this system for years.
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Kakapo76 on September 01, 2020, 13:56:24 PM
Try and get hold of Barry Uddstrom of Terrier jet boats. He has built glass boats for close to 100 years 😁

Thanks Ross, will do.
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Kakapo76 on September 01, 2020, 13:57:50 PM
Hi, Yes polyester resin is the go..contact..NZ Fibregass Ltd, Panmure, Auckland, they will sell you in bulk,and ship to you, also get there filler which mixes with polyester resin for finishing,its much stronger than bog and sands up nicely.use acetone for cleaning drying before glassing, grind back all dead(delaminated) glass, you'll itch for months.. I"ve used this system for years.

Chheers dave, I had a look on their site last night and had decided they were the go, so nice to get a confirmation. I am not looking forward to doing the job but hey the price we pay for hobbies!
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Jimmy Jet on September 01, 2020, 14:27:28 PM
A quick Google will show you that Epoxy is  possibly a better way to go. Stronger, better shelf life is much longer, cures better when applied in thin layers and doesn't gas off VOCs when curing. Doesn't shrink back either. It's usually a bit more expensive but its the way I'd go.
 2c
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: MRM on September 01, 2020, 15:53:06 PM
I think the 2 types won't bond well to each other though?
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Jimmy Jet on September 01, 2020, 17:21:17 PM
Epoxy sticks to polyester very well, like anything, if it's prepped properly. Polyester doesn't stick to epoxy as well but it can be done.
I guess if you 100% know the system used by the boat builder you would use that for repairs. If its unknown, you are probably better going with epoxy for the repair.
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Kakapo76 on September 01, 2020, 17:35:46 PM
Its definitely food for thought. I will do a bit of grinding first to guage the extent of the reparis and then make the final call. I am also having to do this outside under a canopy so I have to take into account curing times etc so will neeed to reserach which product is more forgiving of the environment.
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: johnmead on September 01, 2020, 18:40:28 PM
I was told, after I finished the job, that a sharp mattock can be good for removing the rotten glass. Less grinding equals less itching  ;D
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: johnmead on September 11, 2020, 14:23:52 PM
the old 44
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: johnmead on September 11, 2020, 14:29:12 PM
Finally found the picture. The 44 that I purchased in 1978 and this is when I found out how much I didn't know about turning in skinny water going too fast  O)))). This in the lower Tekapo, before the Ohau got chopped off. A friend who had a Jet 20 spent a bit of time with me showing me how slow I could go  b>  That boat taught me a lot  ;D
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Kakapo76 on September 14, 2020, 12:10:25 PM
Looks like it was  a good spot for lunch!

What colour was your 44?
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: johnmead on September 14, 2020, 15:09:14 PM
The 44 was white with a black deck When I rebuilt the bottom I never had to touch the deck. I think it got changed to green after I sold it.
Title: Re: Best Old Skool Fiberglass Hull for Skinny Water
Post by: Barry Uddstrom on September 16, 2020, 16:40:39 PM
Personally I would use a vinyl-ester resin on any bottom repair where there is likely to be any impact. Sides and deck are ok for polyester.