Reply
 
Thread Tools Search this Thread
 
Old 14 February 2016, 11:19   #21
Member
 
Country: UK - England
Town: Bideford
Make: Bombard Aerotec
Length: 4m +
Join Date: Aug 2014
Posts: 358
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
__________________
simonafloat is offline   Reply With Quote
Old 14 February 2016, 13:55   #22
Member
 
Country: UK - England
Town: Retford
Boat name: Spy-sea-one
Make: Excel 435
Length: 4m +
Engine: Suzuki Outboard/25/4
Join Date: Oct 2011
Posts: 7,441
RIBase
Good turn of speed that Simon I would be happy with that.

Cheers
__________________
jeffstevens763@g is offline   Reply With Quote
Old 14 February 2016, 14:28   #23
Member
 
Country: UK - England
Town: Bideford
Make: Bombard Aerotec
Length: 4m +
Join Date: Aug 2014
Posts: 358
Quote:
Originally Posted by jeffstevens763@g View Post
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.
__________________
simonafloat is offline   Reply With Quote
Old 14 February 2016, 22:19   #24
Member
 
Country: UK - England
Town: Fulham
Make: Aerotec 380
Length: 3m +
Engine: Mercury 25HP
MMSI: 235914577
Join Date: Oct 2015
Posts: 244
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?
__________________
Firstrib is offline   Reply With Quote
Old 15 February 2016, 07:27   #25
Member
 
Country: UK - England
Town: Sussex
Boat name: Bombard
Make: Aerotec 380
Length: 3m +
Engine: Mercury Mariner 15hp
Join Date: Jul 2010
Posts: 3,398
22mph is good - my 380/15 Mariner hits about 2 or 3 kts less.
__________________
Max... is offline   Reply With Quote
Old 15 February 2016, 09:47   #26
Member
 
Country: UK - England
Town: Bideford
Make: Bombard Aerotec
Length: 4m +
Join Date: Aug 2014
Posts: 358
Quote:
Originally Posted by Firstrib View Post
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.
__________________
simonafloat is offline   Reply With Quote
Old 15 February 2016, 10:47   #27
Member
 
Country: UK - England
Town: Retford
Boat name: Spy-sea-one
Make: Excel 435
Length: 4m +
Engine: Suzuki Outboard/25/4
Join Date: Oct 2011
Posts: 7,441
RIBase
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
__________________
jeffstevens763@g is offline   Reply With Quote
Old 20 February 2016, 12:29   #28
Member
 
Country: UK - England
Town: Fulham
Make: Aerotec 380
Length: 3m +
Engine: Mercury 25HP
MMSI: 235914577
Join Date: Oct 2015
Posts: 244
Sounds great, I am having similar adventures on a 380 on the Thames
__________________
Firstrib is offline   Reply With Quote
Old 21 February 2016, 15:05   #29
Member
 
Country: UK - England
Town: Bideford
Make: Bombard Aerotec
Length: 4m +
Join Date: Aug 2014
Posts: 358
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 is offline   Reply With Quote
Old 17 April 2016, 20:12   #30
Member
 
Country: UK - England
Town: Bideford
Make: Bombard Aerotec
Length: 4m +
Join Date: Aug 2014
Posts: 358
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
__________________
simonafloat is offline   Reply With Quote
Old 17 April 2016, 20:19   #31
Member
 
Country: UK - England
Town: Sussex
Boat name: Bombard
Make: Aerotec 380
Length: 3m +
Engine: Mercury Mariner 15hp
Join Date: Jul 2010
Posts: 3,398
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?
__________________
Max... is offline   Reply With Quote
Old 17 April 2016, 20:33   #32
Member
 
Country: UK - England
Town: Bideford
Make: Bombard Aerotec
Length: 4m +
Join Date: Aug 2014
Posts: 358
Quote:
Originally Posted by Max... View Post
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..
__________________
simonafloat is offline   Reply With Quote
Old 25 May 2016, 07:01   #33
Member
 
Country: UK - England
Town: Sussex
Boat name: Bombard
Make: Aerotec 380
Length: 3m +
Engine: Mercury Mariner 15hp
Join Date: Jul 2010
Posts: 3,398
Did you get that 30 hp Simon?
__________________
Max... is offline   Reply With Quote
Old 25 May 2016, 08:21   #34
Member
 
Country: UK - England
Town: Bideford
Make: Bombard Aerotec
Length: 4m +
Join Date: Aug 2014
Posts: 358
Quote:
Originally Posted by Max... View Post
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.
__________________
simonafloat is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




All times are GMT. The time now is 09:37.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.