Reply
 
Thread Tools Search this Thread
 
Old 09 June 2010, 18:31   #11
Member
 
Country: UK - Scotland
Town: thurso
Boat name: Rockhopper
Make: Honda
Length: 3m +
Engine: 20hp
Join Date: May 2010
Posts: 11
New Boat

Well cheers for all the advice, i ended up going for the 3.8m V floor and 20hp Fourstroke. Pritty pleased with it so far. My mate gave me an old trailer but it was a bit short so ended up buying a kit one of the net and it seems to be pritty decent with the bunks supporting right to the back of the boat.

Maybe not quite as fast as i hoped for but still covers the miles quick enough and the fourstroke is so quiet and seems like it will run all day no bother. Very impressed with the little amount of fuel it goes through.

Bought the HP electric pump which works a treat but floor still ripples a bit over chop but i guess that is expected.

Had it out fishing, spearfishing and on a surf mission so far.

it has been named Rockhopper after the oil exploration company that struck oil off the falkland islands and made me a few quid from there shares to buy it in the first place.

Been a few calm days the last week when i have seen Orkney in the distance and thought, well maybe just go for it, Maybe one day when better prepared, was over there on the ferry the other day for some surfing and reckon the longer crossing from scrabster maybe better to avoid the mad tides further up the firth
Attached Thumbnails
Click image for larger version

Name:	First fish.JPG
Views:	249
Size:	53.6 KB
ID:	51803   Click image for larger version

Name:	DSC00726.JPG
Views:	281
Size:	46.2 KB
ID:	51804   Click image for larger version

Name:	Ctoon harbour small.jpg
Views:	677
Size:	54.3 KB
ID:	51805  
__________________

__________________
surferbill is offline   Reply With Quote
Old 09 June 2010, 21:13   #12
RIBnet supporter
 
MustRib's Avatar
 
Country: UK - England
Town: Newcastle
Boat name: Merlin
Make: RB4 Gemini 550
Length: 4m +
Engine: Tohatsu 90C
Join Date: Sep 2006
Posts: 1,048
glad your pleased with the 3.8
Just had mine in Scotland for a week at Skye.
Had it out in short chop and it reminded me why I like the Rib that much more ! It did take four of us across to Rhum and back from Ord on the Sleat peninsula. A little slow going 4 up and 11 miles there and back with a 20 hp 2 stroke, but it wasnt a race and we had time to mooch around with the dolphins. The 2 stroke is VERY loud compared to the 4 stroke, lighter and thirstier......Careful with the spear gun and the air floor!!!
__________________
MustRib is offline   Reply With Quote
Old 18 June 2010, 17:10   #13
Member
 
Country: UK - England
Town: Bournemouth
Boat name: pat
Make: Ribcraft 585
Length: 5m +
Engine: Mercury 150 optimax
Join Date: Jun 2010
Posts: 21
Honwave Te 3.8 Airfloor

Hi. Is me is it me or is it a flaw in the design of the 3.8 air floor, it is as if the boat is to long to be an air floor. I have been in discussions with honda for over a year now regarding the bending of the air floor of the 3.8 which they state is as rigid as a solid floor, when you get up on the plane the floor bends upwards which creates an airpocket underneath the boat which causes the boat to dramactily slow down and the engine starts to cavitate.They say they have never heard of this problem before.
Has anyone had this happen to them if so how did you remedy this,
I have a BST 12v Battery air pump which is excellent so I know all the pressures are correct
The unit runs with a honda 20hp four stroke to both new 2009
Any idea as i am getting nowhere with Honda
regards
Allen
__________________
xchsurfers is offline   Reply With Quote
Old 18 June 2010, 19:19   #14
RIBnet supporter
 
MustRib's Avatar
 
Country: UK - England
Town: Newcastle
Boat name: Merlin
Make: RB4 Gemini 550
Length: 4m +
Engine: Tohatsu 90C
Join Date: Sep 2006
Posts: 1,048
hmm... all I will say on that front, is I find the boat very sensitive to trim and weight distribution, try trimming the engine in a little.
The floor does rise up as the boat gets on the plane, but then mine doesnt slow down, it seems that it settles down at the planing part of the hull
and is quite happy.
If I trim out the motor too much it cavitates, and too far in and the front end rides too flat...On my Yam 20 with a 5 position trim setting, its the
second hole back from the transom that works best.
I dont know if that helps with your Honda trim settings.
Shifting my own weight around in the boat can help also.
__________________
MustRib is offline   Reply With Quote
Old 19 June 2010, 06:00   #15
Member
 
spartacus's Avatar
 
Country: UK - Scotland
Town: Aberdeenshire
Boat name: Sula
Make: Ribcraft 4.8m
Length: 4m +
Engine: Tohatsu 60hp + aux
MMSI: 235087213
Join Date: Jun 2007
Posts: 3,267
RIBase
Quote:
Originally Posted by surferbill View Post
Been a few calm days the last week when i have seen Orkney in the distance and thought, well maybe just go for it, Maybe one day when better prepared, was over there on the ferry the other day for some surfing and reckon the longer crossing from scrabster maybe better to avoid the mad tides further up the firth
Interesting thread. I know it's tempting when you can see land in the distance, but a lot can happen during a crossing, and often the journey there might be okay, but the wind picks up on the way back. Can definately be done - so never say never, but probably worth doing with another boat, plenty fuel, engine spares, VHF, etc. Check out Zodiacman's threads on here - fantastic stuff.
__________________
spartacus is offline   Reply With Quote
Old 19 June 2010, 06:43   #16
Member
 
longjohn's Avatar
 
Country: UK - England
Town: Bournemouth
Boat name: Seadrive
Make: Capelli Tempest 470
Length: 4m +
Engine: Suzuki DF70
MMSI: 235079113
Join Date: Jul 2008
Posts: 540
Quote:
Originally Posted by MustRib View Post
hmm... all I will say on that front, is I find the boat very sensitive to trim and weight distribution, try trimming the engine in a little.
The floor does rise up as the boat gets on the plane, but then mine doesnt slow down, it seems that it settles down at the planing part of the hull
and is quite happy.
If I trim out the motor too much it cavitates, and too far in and the front end rides too flat...On my Yam 20 with a 5 position trim setting, its the
second hole back from the transom that works best.
I dont know if that helps with your Honda trim settings.
Shifting my own weight around in the boat can help also.
Have you checked with a manometer that you are actually getting the full pressure in the floor & tubes? Also without using a Halkey Roberts adapter to keep the valves open
http://www.force4.co.uk/6344/Bravo-I...g-Adaptor.html
the pump may be cutting off before full pressure is reached. The boat/floor is very sensitive to pressure and its imperative to get full pressure in the tubes and floor to get the best performance. I found this was only possible using the Bravo electric pump - I couldn't get the correct pressure in the floor with a hand/foot pump.

The floor is obviously not as rigid as a solid floor and mine did rise a bit and you could feel the wave motion beneath it. But mine didn't slow down and was good for 26 or so MPH in the right conditions.
The engine trim (Honda 20Hp) and load positioning was also important. I found max speed was achieved trimming the engine up to 3rd position from transom and sitting aft (one up)

John
__________________
longjohn is offline   Reply With Quote
Old 19 June 2010, 16:17   #17
Member
 
Country: UK - England
Town: Bournemouth
Boat name: pat
Make: Ribcraft 585
Length: 5m +
Engine: Mercury 150 optimax
Join Date: Jun 2010
Posts: 21
Hi john
Thanks for the reply,I did checked the pressure with two different gauges, I also over inflated the floor 0.9bar to see if this helped, I will try and sit more midships when we take it out again this weekend. Thanks again to you and everyone.
allen
__________________
xchsurfers is offline   Reply With Quote
Old 19 June 2010, 16:47   #18
Member
 
Country: UK - Scotland
Town: thurso
Boat name: Rockhopper
Make: Honda
Length: 3m +
Engine: 20hp
Join Date: May 2010
Posts: 11
Interesting thread. I know it's tempting when you can see land in the distance, but a lot can happen during a crossing, and often the journey there might be okay, but the wind picks up on the way back. Can definately be done - so never say never, but probably worth doing with another boat, plenty fuel, engine spares, VHF, etc. Check out Zodiacman's threads on here - fantastic stuff.

Aye somedays it looks close and others a million miles away. My Wife works for the Harbour and i could only imagine the piss taking if the lifeboat had come out for me after a breakdown. Reckon i will stick to the ferry for now

Did a 20 mile round trip along the coast last weekend with my old man in my boat and my mate in his his old 3m Zodiac. Good fun and test of fuel consumption, reckon i used about 6 litres. My old mans pushing 70 and and spent a lot of time sailing in his youth. After we came back in i went out to do something else and by the time i got back he had sorted out all my anchor ropes etc, nicely spliced together and handy eyes made, Magic

Caught some good Cod but shame i had to head back offhore to work the nest day and had to give them all away
__________________

__________________
surferbill 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





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 04:49.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.