Setting up a Glen-L Tornado for speed

[yessa]

Hi everyone,
We are looking at building a Glen-L Tornado with the aim of flat water high speeds (we are after 100mph).
Advice from the Glen-L builders forum has tended towards a big block with 500hp , although I am wondering if there might be a (at least slightly) more 'elegant' power solution (eg a souped up lexus) .
Other advice was to ask you guys re motor position(suggested to move it forward) and shaft angle (suggested less than 10 degrees; Glen-L suggests 12).
We are complete novices in terms of powerboats so any advice would be much appreciated.

[waimo]

what part of the south island are you from.

[yessa]

Dunedin-the boat will be run on Lake Wanaka and Dunstan

[RiverRacer]

Sounds like Glen-L are still out of the times!. I've seen the Tornado with blown motors that ran good, I've also got the plans for one just never had the room or the time to build one!.. I would leave the strut in the same location but an 8 degree angle and and as high as you can to get the prop about 3/8 from the bottom, motor about 30" from the transom to block mounting surface!. For the plates do not do as the plans says and use a hinge, that creates a hook. Recess the bottom to accomodate the plates and use a double row of bolts. I would also recess an area and install a blast plate!..

[E-boat racer]

We have two of them running small block chevies ( 355 & 383 c.i.)
If I were to build a new one,, I'd follow River Racer's advice 100%.
My shaft angle is 9.5 degrees and I' change to 8 degrees to go
faster and handle better on a new boat. My 383 pulled 480 lbs
of torque at 5,000 rpm and 478 hp at 6,000 rpm. You would need to
build the boat with 1/4" sides and 3/8" sides to lighten it to reach
100 mph. It will need about 550 hp to top 100 mph. I'd plan on a 10.75"
dia. by 15" pitch steel prop and 12 to 15 % overdrive. The engine
will need to pull this at about 7.000 rpm to 7300 rpm to break 100.
Contact me with your postal address and I'll send lots more information.

Rob Kaufman

[waimo]

Hi we are just up the road in Waimate.race a pro stock boat have a few contacts if you ever need help.

[RiverRacer]

We have two of them running small block chevies ( 355 & 383 c.i.)
If I were to build a new one,, I'd follow River Racer's advice 100%.
My shaft angle is 9.5 degrees and I' change to 8 degrees to go
faster and handle better on a new boat. My 383 pulled 480 lbs
of torque at 5,000 rpm and 478 hp at 6,000 rpm. You would need to
build the boat with 1/4" sides and 3/8" sides to lighten it to reach
100 mph. It will need about 550 hp to top 100 mph. I'd plan on a 10.75"
dia. by 15" pitch steel prop and 12 to 15 % overdrive. The engine
will need to pull this at about 7.000 rpm to 7300 rpm to break 100.
Contact me with your postal address and I'll send lots more information.

Rob Kaufman

I think a 10 3/4x16 would work even better!..

[NovaSS]

Hi everyone,
We are looking at building a Glen-L Tornado with the aim of flat water high speeds (we are after 100mph).
Advice from the Glen-L builders forum has tended towards a big block with 500hp , although I am wondering if there might be a (at least slightly) more 'elegant' power solution (eg a souped up lexus) .
Other advice was to ask you guys re motor position(suggested to move it forward) and shaft angle (suggested less than 10 degrees; Glen-L suggests 12).
We are complete novices in terms of powerboats so any advice would be much appreciated.

Glad to see you made it over here. You'll get the straight poop here on how to go fast safetly. Good luck with your Tornado. Someday I'll build mine:cool:

[RiverRacer]

Someday I'll build mine:cool:

WTF, I figured you'd be almost done by now!.. :confused::D

[gfinishline]

It sounds to me that you are taking on TWO OR MORE MAJOR changes to "conventional methods". Your "ideas' sound great and I am eagerly awaiting your results, but in the mean time, how about A BOAT THAT WILL RUN WELL? Building a wooden boat, that has 1950's technology, using an unproven motor combination, and then trying to reach a very high level of performance, all in the same project seems "to me" as DIFFICULT if not very hard to complete. Mike Patterson used my "B boat" mold to build a CAPSULE CIRCLE BOAT. He installed a "turbo 850HP Toyota motor" and it ran like crap. Proven hull design, proven installation, questionable power plant. If you really want to build one of those OLD DESIGNS, at least give us some specs on the hull bottom, so that we can give you accurate guidence on your rigging. The last one of those I helped on was built by a retired guy in Palmdale. He ran a Cleveland 351 Ford off of the front (right hand drive) and I made him an 8 degree strut for it. The boat ran (with 370? HP) in the low 70's and was "just what the owner wanted". It's the other "30 MPH" to reach 100 that makes me question your entire project.

[NovaSS]

WTF, I figured you'd be almost done by now!.. :confused::D

I wish...lol. I have the frames done for the Rebel I'm currently building. As soon as its done I want to start the Tornado. The Reb is just to get me in the water now so I can have some fun while I put together the Tornado as it will be a much more expensive build. BUT with that said the progress on the Reb has slowed down to nothing as we've just moved into a new house and were doing some work on it. On the plus side it has a great shop that will be perfect for the builds.

[boatracer]

Hi everyone,
We are looking at building a Glen-L Tornado with the aim of flat water high speeds (we are after 100mph).
Advice from the Glen-L builders forum has tended towards a big block with 500hp , although I am wondering if there might be a (at least slightly) more 'elegant' power solution (eg a souped up lexus) .
Other advice was to ask you guys re motor position(suggested to move it forward) and shaft angle (suggested less than 10 degrees; Glen-L suggests 12).
We are complete novices in terms of powerboats so any advice would be much appreciated.

Hey Yessa we have or own forum here in NZ soley dedicated to V8 racing runabouts:) feel free to sign up and have a nose:D

http://v8proboats.proboards100.com/index.cgi

[RiverRacer]

I wish...lol. I have the frames done for the Rebel I'm currently building. As soon as its done I want to start the Tornado. The Reb is just to get me in the water now so I can have some fun while I put together the Tornado as it will be a much more expensive build. BUT with that said the progress on the Reb has slowed down to nothing as we've just moved into a new house and were doing some work on it. On the plus side it has a great shop that will be perfect for the builds.

Ahh, didn't know you were already building one, yeah one project at a time I can relate to that stuff, LOL..

[RiverRacer]

Hey Yessa we have or own forum here in NZ soley dedicated to V8 racing runabouts:) feel free to sign up and have a nose:D

http://v8proboats.proboards100.com/index.cgi

How bout us yanks, can we join in on the fun!..:D

[boatracer]

sure can RiverRacer more than welcome:D

[NovaSS]

Ahh, didn't know you were already building one, yeah one project at a time I can relate to that stuff, LOL..

Well its not a Vdrive. Its a 15 foot outboard flat. It should help me get used to the driving characteristics of a flat. I have a vintage 1958 Johnson Super Seahorse motor for it. It should look pretty cool. As I said as soon as its done the Tornado will begin. I'm looking forward to it.:cool:

Some pics are below. The boat is the same design as I'm currently building. My version will have a ribbon stripe mahogany deck. The last picture is on the motor I mentioned. BTW the boat pictured was built by a guy from Australia and it is not quite finished in these pics.

http://i56.photobucket.com/albums/g180/1969NovaSS/boat%20info/2123742103_60ee9a1192_b.jpg

http://i56.photobucket.com/albums/g180/1969NovaSS/boat%20info/2123750899_92515aa7fe_b.jpg

http://i56.photobucket.com/albums/g180/1969NovaSS/boat%20info/01-26-08001.jpg

[RiverRacer]

Well its not a Vdrive. Its a 15 foot outboard flat. It should help me get used to the driving characteristics of a flat. I have a vintage 1958 Johnson Super Seahorse motor for it. It should look pretty cool. As I said as soon as its done the Tornado will begin. I'm looking forward to it.:cool:

Some pics are below. The boat is the same design as I'm currently building. My version will have a ribbon stripe mahogany deck. The last picture is on the motor I mentioned. BTW the boat pictured was built by a guy from Australia and it is not quite finished in these pics.

http://i56.photobucket.com/albums/g180/1969NovaSS/boat%20info/2123742103_60ee9a1192_b.jpg

http://i56.photobucket.com/albums/g180/1969NovaSS/boat%20info/2123750899_92515aa7fe_b.jpg

http://i56.photobucket.com/albums/g180/1969NovaSS/boat%20info/01-26-08001.jpg

That is cool, nice to see some old school come back to life!...

[RiverRacer]

sure can RiverRacer more than welcome:D

Well thank you, guess I'll have to visit!...:cool: