More fun in the aerotec - Page 2

simonafloat · 14 February 2016, 12:19

Took the 420 out today with a gps and the mariner 15. 22mph max. Could probably squeeze a fraction more but it was very rough. Not bad though.

Simon

jeffstevens763@g · 14 February 2016, 14:55

Good turn of speed that Simon I would be happy with that.

Cheers

simonafloat · 14 February 2016, 15:28

Quote:

Originally Posted by jeffstevens763@g

Good turn of speed that Simon I would be happy with that.

Cheers

Yeah, happy with that, suffering a bit now though, I took a real battering today! The boats fine but I feel like I've just done 10 rounds with mike tyson. 10 miles or so of surf and heavy chop.

Firstrib · 14 February 2016, 23:19

H Simonafloat. Those wheels look good quality. The wheels I have come with the Aerotec 380 and they are proving difficult as they don't flip up, but are good on the mud and rocky shale on the Thames for launching. Do yours flip up?

Max... · 15 February 2016, 08:27

22mph is good - my 380/15 Mariner hits about 2 or 3 kts less.

simonafloat · 15 February 2016, 10:47

Quote:

Originally Posted by Firstrib

H Simonafloat. Those wheels look good quality. The wheels I have come with the Aerotec 380 and they are proving difficult as they don't flip up, but are good on the mud and rocky shale on the Thames for launching. Do yours flip up?

Yes, they flip up. I got them off an eBay dealer, they are ok but don't fit the metal studs already fixed to the bombard transom. They JUST fit, I. E. Flipped down they just clear the transom, flipped up they just clear the transom. The outboard must be in a raised position when wheeling the boat around. But I like them as they are on a pivot so always stay attached to the boat.. not sure they'd be strong enough to carry the weight of a 25hp 4 stroke though.

jeffstevens763@g · 15 February 2016, 11:47

for info i got a pair 200 kg capacity from barnet marine the largest they do Laurence will send you their full range if you contact him

cheers

Firstrib · 20 February 2016, 13:29

Sounds great, I am having similar adventures on a 380 on the Thames

simonafloat · 21 February 2016, 16:05

As of next month I'll be breaking my own speed records for sure...

Have just taken the plunge and am swapping my 15 for a mint 2005 2 stroke Johnson 30

The aerotec 420 is rated up to 30hp and the Johnson tips the scales at 52kgs which is super light for that level of power. I seriously doubt I'll be fully opening the throttle with just me on board though! I'll need some ballast passengers...

Its a bit of overkill for sure but I am planning ahead for that day when I find an immaculate, affordable futura mk3. Could be a long wait... In the meantime being able to get a full load of adults, kids and luggage up on the plane will do me.

Here's a question: If I am currently cruising at say 12 - 15mph at about 3/4 throttle on the mariner 15, how much more fuel will the 30 burn to do the same? I'm hoping there won't be too much increase but if there is then what the hey.

Simon

simonafloat · 17 April 2016, 21:12

So, took the 420 out on the estuary this afternoon. Glorious weather for it. Discovered that the middle trim position on the mariner 15 gives a more stable ride with 3 up, it holds line better and makes life easier for the helm. No effect on the top speed. Achieved 19.5 mph with two adults and one child, not bad.

On sunny days like this the pressure in the tubes and floor drops noticeably after a few minutes in the cold water. A battery bravo pump is next on my shopping list as hand pumping while standing on the thwart is not so easy!

Hit a sandbank not marked on my navionics chart, Google maps or bing maps. Things change quickly here! Today was really a practise for our main goal this summer - bideford to lundy and back... I needed to get an idea of cruising speeds, chop, fatigue etc. Come to the conclusion that 12 - 15 mph is comfortable over the duration of the 1.5 hour crossing but I'll calculate fuel based on WOT all the way. 40 litres should be safe.

Now we're virtually set it's just a case of watching and waiting for the perfect weather window...Anyone else one here done a long open sea crossing in their sib?

Simon

Max... · 17 April 2016, 21:19

You need to over inflate to start with and then check with the pressure gauge, using a manual pump *in* a SIB is very tricky if not impossible for the HP floor!

How far is the crossing?

simonafloat · 17 April 2016, 21:33

Quote:

Originally Posted by Max...

You need to over inflate to start with and then check with the pressure gauge, using a manual pump *in* a SIB is very tricky if not impossible for the HP floor!

How far is the crossing?

19 miles from bideford, about 16 of open sea. Lundy looks deceptively close owing to its height! Includes the infamous bideford bar crossing which has to be crossed at the top of the tide. I will do a trip report as and when we do it.

I can inflate the boat with a foot pump when it's in the water but you have to stand on the thwart..

Max... · 25 May 2016, 08:01

Did you get that 30 hp Simon?

simonafloat · 25 May 2016, 09:21

Quote:

Originally Posted by Max...

Did you get that 30 hp Simon?

no, i got gazumpted on it. but to be honest, having done some open sea trips i have decided that a 15 is ideal, power and weight wise. basically unless its flat calm then 12 to 15mph is the comfortable cruising speed and a 15 will achieve that with 3 adult and 1 child which is the maximum number of people i want to take out.