Jet boat at Calshot - Page 2

Hightower · 04 December 2005, 17:22

So enjoyed myself today!

First I'd like to thank Paul for the lift in Merlin to Calshot and back. And for his company.

Second I'd like to thank Steve and Caroline for the "Jet" boat experience....What a thrill and thank for letting me at the helm. My only regret was not being more aggressive with Pressman, but hey.....It's not my boat! Great! Thanks!

Third, I'd like to thank Andre for offering me a lift back to the Forts aboard His Verado powered 7.5 Parker. What a smooth ride and I managed to hear every word Andre said which speaks "Volumes" about the quiteness of the whole package, very impressed!

Dolphin didn't make an appearance, but some how I wasn't that bothered as I think I'd had enough excitment.

See you all tomorrow guys!

bogib · 04 December 2005, 18:39

I am so jelous of not beeing there today instead I circumnavigated the whole M25 orbital....................................

Look forward seeing you tomorrow............... and hear all the gooddyy stories....... ( I might be free Tuesday morning)..................

Bogi

pressman · 04 December 2005, 19:30

We had a bit of fun today sorry you missed it. It was flat calm until we turned up anyway!!

We couldn't get your rough weather pics tho Bogi, Sorry.

pressman · 04 December 2005, 19:46

Kathleen shame the aeroplanes weren't on time

Sorry about getting you wet Paul close up shot was a bit too close

timboli · 04 December 2005, 20:14

Thanks Steve and Caroline,what an amazing boat,I wouldnt have believed what a water jet drive could do if I hadnt seen it for myself

Zippy · 04 December 2005, 21:13

Sure is a stunning bit of kit that thing!

amazing ability to turn on a sixpence and stop from flat out in no distance at all!!

Very well put togeather and the Photo diary of the build was really interesting as well.

Many thanks for the hospitality. im off to count the pennies in my piggybank to see if i can afford one!

pressman · 04 December 2005, 21:15

Sure you can, never mind that house just live in the console

jwalker · 04 December 2005, 22:21

Pressman, can I ask about the exhaust elbows on your engines? They look to have the water injection pipe facing upwards. Does the pipe just terminate as it joins the elbow or is there some clever piece inside, or other device, to prevent water dribbling into the turbo? This is a serious enquiry, I feel my turbo is a little vulnerable

and an exhaust elbow similar to yours is being contemplated.

I like the gang photo.

The Jackeens · 04 December 2005, 22:50

Quote:

Originally Posted by Hugh Jardon

For those that could not get along today you missed out on a great experience.

What a lovely day for it too. I did miss out (even after all my study of jets etc.)

due to getting stuck at Heathrow, Caroline & Steve.

Really sad about that.

But Paul had a brill time and will post photos so many thanks.

And thanks Andy for accompanying him.

missus (gutted)

jwalker · 04 December 2005, 22:59

Pressman, I've just seen Hightower's photo in the jetdrive thread, are the elbows double skinned with the water running between them until the rubber hose?

Hightower · 05 December 2005, 01:00

Quote:

Originally Posted by jwalker

Pressman, I've just seen Hightower's photo in the jetdrive thread, are the elbows double skinned with the water running between them until the rubber hose?

John, I asked the same question. The water piping continues inside the exhaust untill the downward part of the pipe aka the rubber hose.

Hope this helps.

pressman · 05 December 2005, 08:24

These are injection elbows that we made up ourselves as, the originals were to low and water would have run back up the exhaust.

Where you see the water being injected into the exhaust, this is a double skin, exhaust gas runs up through the middle section, then around that is another stainless steel elbow of larger diameter which forms a water jacket within which the sea water runs to cool the exhaust.

Where you see the elbows terminate in the exhaust hose, this is where the water leaves the jacket and mixes with the outgoing exhaust gases.
Can send you a diagram should you want to make one for yourself.

Quote:

Originally Posted by jwalker

Pressman, can I ask about the exhaust elbows on your engines? They look to have the water injection pipe facing upwards. Does the pipe just terminate as it joins the elbow or is there some clever piece inside, or other device, to prevent water dribbling into the turbo? This is a serious enquiry, I feel my turbo is a little vulnerable

and an exhaust elbow similar to yours is being contemplated.

I like the gang photo.

jwalker · 05 December 2005, 11:19

Pressman, thanks for that. No need for a diagram, after seeing Hightower's picture I undestood how you'd done it. The lower section, from the turbo to the elbow, appears to have heat shielding around it. What sort of thickness have you used for the tubing of the elbow?

pressman · 05 December 2005, 13:50

Thats 1.5 - 2mm if i can remember rightly

Quote:

Originally Posted by jwalker

Pressman, thanks for that. No need for a diagram, after seeing Hightower's picture I undestood how you'd done it. The lower section, from the turbo to the elbow, appears to have heat shielding around it. What sort of thickness have you used for the tubing of the elbow?

gtflash · 06 December 2005, 17:38

is that mr harvey pearing at your engine

pressman · 06 December 2005, 17:44

Check Your pm's GTFlash!!