Search found 52 matches

by Joris
Tue Dec 23, 2014 11:54 pm
Forum: Boat Power
Topic: 10 vs 21 micron filter??
Replies: 6
Views: 4364

Re: 10 vs 21 micron filter??

extract from ryco filter faq What is micron rating? A measure of the pore size in the filter media. Expressed as either ‘Nominal’ or ‘Absolute’. Nominal Rating relates to the percentage of particles at a given size that a filter can capture ie. 10 microns at 90% means it will remove 90% of particle...
by Joris
Sun Dec 07, 2014 11:21 am
Forum: Power Boats
Topic: Roberta's Torpedo
Replies: 1919
Views: 221290

Re: Roberta's Torpedo

Roberta, I think is't a good idea to have a pro put it all together. Luckily i've never had one fail in a boat but as an ex-R&D test-engineer in a transmissions lab i've seen many couplings fail under load. And ,without going into much details, when you push 300+ hp through a 1" shaft that ...
by Joris
Mon Oct 13, 2014 9:36 pm
Forum: Hankinson designs
Topic: Fuel consumption Tahoe
Replies: 35
Views: 6460

Re: Fuel consumption Tahoe

Daniel, The older ski-boats have a shaft-drive so if you can pick up one that has an engine in good condition you have all the parts in one buy: engine, gearbox, shaft, rudder etc. Having the engine rebuilt if necessary isn't really expensive. I wouldn't start with a Mercruiser 3.0L unless you can f...
by Joris
Mon Oct 13, 2014 1:28 pm
Forum: Hankinson designs
Topic: Fuel consumption Tahoe
Replies: 35
Views: 6460

Re: Fuel consumption Tahoe

For instance I can buy a used Mercruiser 5.7 V8 (500 hrs) for 4K (euro's). Or a new 5.0 V8 for 8.5K (euro's) Daniel, Those will be bobtail-engines i suspect, so you'll need to add some for the gearbox and other accessoires. You may want to consider a Ford V6-engine, many ski-boats in the UK used th...
by Joris
Wed Jul 02, 2014 11:42 am
Forum: Power Boats
Topic: Roberta's Torpedo
Replies: 1919
Views: 221290

Re: Roberta's Torpedo

I'm building "Gladys" a 20 foot Hacker runabout from the runabout book.

Joris
by Joris
Wed Jul 02, 2014 11:24 am
Forum: Power Boats
Topic: Roberta's Torpedo
Replies: 1919
Views: 221290

Re: Roberta's Torpedo

Thank you Roberta!
With the paint ordered i'm getting really close to flipping the hull, i might even catch up with you :wink:

Joris
by Joris
Wed Jul 02, 2014 10:44 am
Forum: Power Boats
Topic: Roberta's Torpedo
Replies: 1919
Views: 221290

Re: Roberta's Torpedo

Roberta, i see you will be using Epifanes poly-urethane for your sides and bottom. I was browsing the epifanes website because i'm about to order paint for mine and noticed they specify the poly-urethane for above waterline. Did you order "bottom paint" for your bottom or is the normal &qu...
by Joris
Wed May 14, 2014 6:36 am
Forum: Hankinson designs
Topic: Barrelback 20'
Replies: 211
Views: 47543

Re: Barrelback 20'

alycat wrote:Starting to make a full size layout for the shaft hole measurements? I have a full size print of the engine. Has anyone done this before? Or am i off my rocker?


I'm doing the same. I have a full size drawing of the boat so it was the easiest way for me to check everything.
Joris
by Joris
Tue May 13, 2014 7:15 am
Forum: Hankinson designs
Topic: Barrelback 20'
Replies: 211
Views: 47543

Re: Barrelback 20'

I've noticed that most builders cut the plywood across the grain of the outer layer and not lengthwise? Is there a reason for this?
Reason i'm asking is that i noticed a significant different in stiffness between the two.

Thanks,
Joris
by Joris
Wed Apr 09, 2014 11:13 pm
Forum: Power Boats
Topic: Vent placement on Gentry
Replies: 13
Views: 1564

Re: Vent placement on Gentry

Thanks Ozzieboat. Found it.
I wish CE-rules were as clear as that... :roll:

Joris
by Joris
Tue Apr 08, 2014 12:41 pm
Forum: Power Boats
Topic: Vent placement on Gentry
Replies: 13
Views: 1564

Re: Vent placement on Gentry

Thanks Jenko, i wasn't aware those fumes are heavier than air.

What about size? Is one 3" extractor (170cfm) sufficient for a boat like the Gentry?
by Joris
Tue Apr 08, 2014 4:54 am
Forum: Power Boats
Topic: Vent placement on Gentry
Replies: 13
Views: 1564

Re: Vent placement on Gentry

Can anyone tell me why the inlets need to be just under the deck and exhausts need to draw from the bilge?
Hot air and fumes rise so i thought it would be better the other way around...
by Joris
Sun Mar 16, 2014 11:37 am
Forum: Power Boats
Topic: Riviera powered by v12 jaguar
Replies: 333
Views: 96128

Re: Riviera powered by v12 jaguar

I have no experience with the Kalmaker-products, seems pretty high-end material.
Do they specify placement for the exhaust gas sensors? They seems close to the ports.

Nice welding btw :wink:

Joris
by Joris
Thu Mar 13, 2014 10:17 am
Forum: Power Boats
Topic: Riviera powered by v12 jaguar
Replies: 333
Views: 96128

Re: Riviera powered by v12 jaguar

Jenko,

May i ask what exhaust gas sensor en management system you will be using on that engine?

Thanks,
Joris
by Joris
Wed Mar 12, 2014 7:16 am
Forum: Power Boats
Topic: Riviera powered by v12 jaguar
Replies: 333
Views: 96128

Re: Riviera powered by v12 jaguar

hcraft,
That's a great looking boat! Do you have more pictures?
Thanks,
Joris

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