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05 June 2013, 09:25
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#1
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Member
Country: UK - Channel Islands
Town: alderney
Boat name: Auk
Make: Humber
Length: 6m +
Engine: outboard
Join Date: Jun 2013
Posts: 3
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Radar for Humber 6.3 m with single a frame?
please advise on suitable radar kit to fit to a single A frame. weight is an issue.
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05 June 2013, 10:38
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#2
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Member
Country: UK - Channel Islands
Town: A large rock
Boat name: La Frette
Make: Osprey Vipermax
Length: 6m +
Engine: 200 Suzzy
Join Date: May 2004
Posts: 2,893
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Height will be as much an issue so you don't cook your eyeballs 
What diameter is the tubing, and how is it fixed to the transom?
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05 June 2013, 10:48
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#3
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Member
Country: UK - N Ireland
Town: Rostrevor
Boat name: Ricochet
Make: Redbay
Length: 7m +
Engine: Twin F115 Yams
MMSI: 235083269
Join Date: Oct 2011
Posts: 930
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Quote:
Originally Posted by Erin
Height will be as much an issue so you don't cook your eyeballs |
Not an issue with Broadband Radar
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Maximum Preparation - Maximum Fun
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05 June 2013, 11:15
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#4
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RIBnet admin team
Country: Ireland
Length: 4m +
Join Date: Feb 2008
Posts: 14,898
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Quote:
Originally Posted by markalderney
please advise on suitable radar kit to fit to a single A frame. weight is an issue.
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Let's see a photo of this A frame. Dr Doof on here had problems with his Humber A-frame cracking under the load of a radar dome. There's about 7kg of kit involved so it takes a lot of supporting...
Linky
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05 June 2013, 11:42
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#5
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Member
Country: UK - Channel Islands
Town: alderney
Boat name: Auk
Make: Humber
Length: 6m +
Engine: outboard
Join Date: Jun 2013
Posts: 3
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with photo of A frame
Thanks, broadband radar seems the way to go. 2" stainless steel A frame fitted by Humber, hope the photo is useful? Mark
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05 June 2013, 12:37
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#6
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Member
Country: UK - England
Town: West Sussex
Length: no boat
Join Date: Oct 2002
Posts: 3,872
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Quote:
Originally Posted by markalderney
Thanks, broadband radar seems the way to go. 2" stainless steel A frame fitted by Humber, hope the photo is useful? Mark
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Mark, I have the Simrad 3G broadband radar on my a frame and it is low but not an issue. You may need to weld a flat plate to the top of your a frame
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Andre
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05 June 2013, 15:26
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#7
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Member
Country: UK - Channel Islands
Town: alderney
Boat name: Auk
Make: Humber
Length: 6m +
Engine: outboard
Join Date: Jun 2013
Posts: 3
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thank you, i will investigate the device ...weight may be an issue
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05 June 2013, 16:33
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#8
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RIBnet admin team
Country: Ireland
Length: 4m +
Join Date: Feb 2008
Posts: 14,898
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I think that the single frame is the main issue. Hold onto the top and rock it backwards and forwards quickly - does it flex? If it does, I'd forget about adding 8kg to it...
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05 June 2013, 17:34
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#9
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Member
Country: UK - England
Town: West Sussex
Length: no boat
Join Date: Oct 2002
Posts: 3,872
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Quote:
Originally Posted by willk
I think that the single frame is the main issue. Hold onto the top and rock it backwards and forwards quickly - does it flex? If it does, I'd forget about adding 8kg to it...
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Good point one needs to check the weight of the scanner. I think 8 kg maybe over the top.
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Andre
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05 June 2013, 18:27
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#10
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Member
Country: UK - N Ireland
Town: Rostrevor
Boat name: Ricochet
Make: Redbay
Length: 7m +
Engine: Twin F115 Yams
MMSI: 235083269
Join Date: Oct 2011
Posts: 930
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Quote:
Originally Posted by Andre
Good point one needs to check the weight of the scanner. I think 8 kg maybe over the top.
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A Broadband 4G™ Radar weights in at 7.4 kgs so my man willk is on the ball.
Personally I would be worried about the possible effect of the vibration that a single tube A-frame may create.
Also the radar array has to have a clear line of sight forward to be effective 
__________________
Maximum Preparation - Maximum Fun
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05 June 2013, 19:40
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#11
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RIBnet admin team
Country: Ireland
Length: 4m +
Join Date: Feb 2008
Posts: 14,898
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Quote:
Originally Posted by Andre
I think 8 kg maybe over the top.
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I was adding the extra half kilo for steel plate and fixings.
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05 June 2013, 20:21
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#12
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Member
Country: UK - England
Town: West Sussex
Length: no boat
Join Date: Oct 2002
Posts: 3,872
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Quote:
Originally Posted by willk
I was adding the extra half kilo for steel plate and fixings.
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yes i would agree here and I forgot that I have a solid double A frame. a single was is really only for top light , nav lights and VHF antenna.
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Andre
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05 June 2013, 20:27
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#13
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RIBnet admin team
Country: UK - Scotland
Boat name: imposter
Make: FunYak
Length: 3m +
Engine: Tohatsu 30HP
MMSI: 235089819
Join Date: Sep 2005
Posts: 11,627
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Quote:
Originally Posted by markalderney
Thanks, broadband radar seems the way to go. 2" stainless steel A frame fitted by Humber, hope the photo is useful? Mark
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You might want to discuss with Humber - you wouldn't want them suggesting the extra leverage is why the transom failed.
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