Thunderbird in storage for 33 years - Page 10

DAREDEVIL · 12-09-2010, 06:55 PM

Quote:

Originally Posted by Jon Fuller

Scott, we run the diesels at around 4200rpm (governor cuts in at 4300). we spin Merc Bravo1's @ 28" pitch via 1.5: merc XR Sportmasters. We see IRO 10-11% slip.

4200rpm divided by 1.5 = 2800 rpm @ the prop, x 28 pitch, divided by 1056 (magic number) = 74.24 less 10% slip = 66.81mph

math backs up the Gaffrig/GPS.

As I've said a couple of times, it's not a fast top speed boat, it wasn't built to be. but if you come over here with your boat, and we have a rough CTC, you might just find this slow old boat (and a few others) in front of you.

BTW, I just did the math on the figures you gave for your boat (5950rpm /1.68 gears /32pitch /18% slip and I make it 88mph, not 96

over here, for marathon class, we'd expect to see a boat like yours in D class, with something like a 500efi in it, or a 525, but with the CMI's removed (separate runner headers are not allowed in D) It wouldn't set the world alight top speed, but would be a good average speed boat. if you ran the engine you have, you'd have to run in C-sport and compete with something like the Buzzi 39 with twin 560hp, or possibly twin 600hp FPT diesels on trimax's. good luck with that if someone starts pushing hard in one of them, especially if it blows hard that day.....you'll eat his rooster for like 10 seconds, then you wont see him again till the prize giving.

There is a guy running one of these currently, but he doesn't seem to push it very hard in the rough, ..a crying shame.

NO,NO,NO...the 32 is the prop i race in P-4, which is 85 max speed !!!!!!
The 36 is my all day fun prop !!!!!!!

witha 500 efi and a speedmaster #5 my boat would do maybe 65 MPH...no likey !!!

Jon Fuller · 12-09-2010, 07:07 PM

Quote:

Originally Posted by DAREDEVIL

witha 500 efi and a speedmaster #5 my boat would do maybe 65 MPH...no likey !!!

Yes, I realise that, but you'd be competitive in class. I don't think you would with your 600 cube motor, certainly not against a well driven Buzzi 39 when it roughs up.

DAREDEVIL · 12-09-2010, 07:22 PM

Quote:

Originally Posted by Jon Fuller

Yes, I realise that, but you'd be competitive in class. I don't think you would with your 600 cube motor, certainly not against a well driven Buzzi 39 when it roughs up.

I agree...anything bigger then 35/36...is tuff to beat for me with my 32...but i give them a run for the money tho !!!!!!!

Below 5 foot seas !! LOL

( btw, can u rename the litlle devil in daredevil ???? I LIKE IT !!!!! )

Jon Fuller · 12-09-2010, 07:59 PM

Quote:

Originally Posted by DAREDEVIL

I agree...anything bigger then 35/36...is tuff to beat for me with my 32...but i give them a run for the money tho !!!!!!!

Below 5 foot seas !!

Maybe, but a Buzzi 39 with 1200 horses and the benefit / balance of counter rotation is always gonna a tough nut to crack.

DAREDEVIL · 12-09-2010, 10:54 PM

Quote:

Originally Posted by Jon Fuller

Maybe, but a Buzzi 39 with 1200 horses and the benefit / balance of counter rotation is always gonna a tough nut to crack.

OH,,no doubt !!!!!

lain · 13-09-2010, 08:50 AM

Daredevil here's your square hypotenuse:

Although I've limited racing experience I think I can offer you some valuable advice that hasn't previously been mentioned that I'm sure you'll thank me for later:

Being an American boat, to save weight remove all 8 cupholders from the dash and the 12 from the rear and I'm sorry to say all the beer, yes every barrel, and now that’s gone there's no need for that double door fridge! And kick out the stereo and all associated wiring, (sorry I don't know the Americanism for Stereo but it's the thing kicking out all that Elvis noise) that should save you a few kilo's (couple of hundredweight) and then there's the chrome! And more chrome and that extra chrome you put on for good measure, get rid of that to.

There, now she's as light as a feather.

1 last tip:

Remove the notorious aggregate of swirly colours (sorry; colors) from the dash because identifying where the gauges are on a long distance race is essential.

And when you come over how about affixing something to your boat that allows us to identify your country of origin?

Carl · 13-09-2010, 09:02 AM

Shelbysteve · 13-09-2010, 11:05 AM

Quote:

Originally Posted by timtap

These shots are amazing! Time stoodstill for 35 odd years.

DAREDEVIL · 13-09-2010, 12:56 PM

Quote:

Originally Posted by lain

Daredevil here's your square hypotenuse:

Although I've limited racing experience I think I can offer you some valuable advice that hasn't previously been mentioned that I'm sure you'll thank me for later:

Being an American boat, to save weight remove all 8 cupholders from the dash and the 12 from the rear and I'm sorry to say all the beer, yes every barrel, and now that’s gone there's no need for that double door fridge! And kick out the stereo and all associated wiring, (sorry I don't know the Americanism for Stereo but it's the thing kicking out all that Elvis noise) that should save you a few kilo's (couple of hundredweight) and then there's the chrome! And more chrome and that extra chrome you put on for good measure, get rid of that to.

There, now she's as light as a feather.

1 last tip:

Remove the notorious aggregate of swirly colours (sorry; colors) from the dash because identifying where the gauges are on a long distance race is essential.

And when you come over how about affixing something to your boat that allows us to identify your country of origin?

Thanks for the HYPO..but in my boat there are no cupholders and i dont drink alcohol ...mhhhhhhhh....wrong guy here buddy ..still funny as hell tho..lol

littlenige · 18-09-2010, 04:29 PM

Daredevil/Jon - when are you guys getting engaged?

DAREDEVIL · 18-09-2010, 10:04 PM

Quote:

Originally Posted by littlenige

Daredevil/Jon - when are you guys getting engaged?

Why u wanna know, are u jellous ???? lol

dowdy · 19-09-2010, 01:25 AM

Quote:

Originally Posted by DAREDEVIL

Why u wanna know, are u jellous ???? lol

How the feck are you going to fit a prop on third finger left hand

DAREDEVIL · 19-09-2010, 05:43 AM

Quote:

Originally Posted by dowdy

How the feck are you going to fit a prop on third finger left hand

hahahahaha

Alan Bontoft · 19-09-2010, 02:23 PM

A couple of photos from the sat evening pre race , got alot more of dry martini but having a nightmare with file sizes I'll get them on eventually.

lain · 19-09-2010, 02:48 PM

Quote:

Originally Posted by Alan Bontoft

A couple of photos from the sat evening pre race , got alot more of dry martini but having a nightmare with file sizes I'll get them on eventually.

It's a lovely boat, out of curiosity what speed is she capable of with current setup?

Alan Bontoft · 20-09-2010, 10:04 AM

Quote:

Originally Posted by lain

It's a lovely boat, out of curiosity what speed is she capable of with current setup?

I don't know but i'm sure mike will answer that for you.It's the first time I've been to ctc and I have to say I'm hooked ,will certainly be going next year ,and can see it becoming a bit of an unhealthy obsession. After watching nearly all of the footage from this site ,it doesn't seem to have as much interest as it once did, I sincerely hope it carries on long into the future as I,m hooked.

Rob Gray · 08-10-2010, 04:14 PM

The best we saw with the blown Teagues was 85 mph before the noise stopped. With the normally aspirated Cobras we saw 75 mph on the CTC run home to Gurnard. But VERY over-propped. I would think 80 or just under on lowish tanks with the right props - and that is probably more than enough for the old girl. I think that even if you put the Duchess of Cornwall in running spikes she would still be overtaken by Kelly Holmes in gym shoes.

FLYING FISH · 08-10-2010, 04:53 PM

Quote:

Originally Posted by Rob Gray

The best we saw with the blown Teagues was 85 mph before the noise stopped. With the normally aspirated Cobras we saw 75 mph on the CTC run home to Gurnard. But VERY over-propped. I would think 80 or just under on lowish tanks with the right props - and that is probably more than enough for the old girl. I think that even if you put the Duchess of Cornwall in running spikes she would still be overtaken by Kelly Holmes in gym shoes.

In 1974 when built ,Unoembassy averaged 69.5 mph in moderate conditions in the Round the Island race,finishing 1 second behind the 36ft cigarette `Eraf`. It was running 2 x 600hp kiekhaefers,so in light conditions and say 250 more hp,it could well top 80 mph.

littlenige · 08-10-2010, 05:16 PM

Ahr, the legend that is Eraf..........................I wonder if this pic was taken at the start of that very race?

cfun · 08-10-2010, 05:40 PM

And as reported in earlier threads D2S with it's diesel engines and higher weight did around 75ish with the 500hp and up to 82mph with the 630hp Sabre Diesel engines ... would it be right to think the Cobras were around 550-600hp each taking D2S speeds as a guide line

Why such a large difference in speed between the Classic Cinzano CUV which is a simular hull but aluminium which seems to be getting around a 100mph with the newly installed 725hp engines

As a classic boat how does the HP and speeds relate to the Cigarette Bounty Hunter