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Old 17 June 2016, 08:49   #21
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Ahh... panic over.

With some time to look more closely in the garage I found the Zodiac axle tubes were a little belled at the end so filed them down and then took a tiny bit from their overall diameter and removed imperfections with some engineering grade abrasive paper I found.

Similarly I found the wheels being a cheap plastic casting were slightly narrowed in diameter at the bore ends. So a half round file and final finishing with engineering paper wrapped on a round dowel has produced a more constant bore... and they fit!

I was obviously over thinking this.
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Old 18 June 2016, 10:08   #22
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Here's a look at the comparison with OE wheels and my solids update.

They weigh 1.8kg more each and have a slight negative buoyancy which will save fighting them under water to clip on and take off.

Tide good for the end of next week... as is the forecast at the moment.... so they might get a trial soon.
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Old 27 June 2016, 07:16   #23
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Used them now and a good success.

They are a little more clonky on the road not having air in them but the diameter is fine for normal small kerbs/potholes etc.

What's brilliant is them having 1.5kg each negative buoyancy which makes them so much easier to remove/attach in the water compared to the original air filled tyres.
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Old 30 June 2016, 15:35   #24
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In the pursuit of my personal OCD wheel experience...

The only negative was that Mrs Fenlander thought the solids really heavy adding 3.6kg to the pair of legs for her to carry back to the car.... so as I have a secondary use for the solids I've just bought some sandhoppers as well.

16-50 inc next day post from Ebay... and the bores were the right size to slip over the axle nicely...

2 x Dinghy Launch Trolley Wheels 10" Sand Hopper MP416 - Free Next Day Delivery! | eBay

They are 0.2kg each lighter than the OE pneumatic wheels so no complaints there... and their displacement is minimal so they still have a good negative buoyancy in use of 1.3kg (leg and wheel).

Their diameter is 10" compared to the 11.25" (advertised at 12") of the solids.... so just 0.75" less ground clearance for the outboard skeg.

Please excuse mixed met/imp units.
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Old 30 June 2016, 23:56   #25
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Reading your wheel review with interest, I also cannot get the wheelbarrow style wheels down once I have launched and have to do it in the surf while standing in the water lifting the rear of the sib up, so I think I might order some sand hopper style wheels myself.
Does the fact that they have a negative buoyancy make them harder to lift up due to the weight but easer to put down, the kinda opposite to wheelbarrow wheels?
The only problem I might have is the extra width may mean they fowl on the, (excuse my lack of vocabulary ) the pointy bit of tube that sticks out beyond the transom,
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Old 01 July 2016, 04:24   #26
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Compared to the OE wheelbarrow inflated wheels the sandhoppers are a fraction lighter out of water so as easy/easier to handle in all respects when the legs are off the boat.

When putting them down the 1.3kg negative buoyancy is a massive help.

When lifting them the 1.3kg is no problem at all. Most important I've found in lifting wheelbarrow wheels with massive buoyancy whatever the mechanism for attaching them down (pin, tabs, detent) the buoyancy makes it hard to overcome this initial release before they swing up.

Also with the detachable type wheels I have now (and have had several times in the past) if the wheels have great buoyancy and your hands are wet as you push them down to release from the tabs they can fly up through the water pulling through your hands and bash under a tube. Given they are often rough ended axle tubes with pointy split pins or R-clips this could be a puncture risk.

The sandhoppers look wide compared to the solids I've shown above but they are actually only 9cm wide compared to the overall 9.5cm width of my OE wheelbarrow types taken at the most bulbous part of the sidewall.
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Old 01 July 2016, 04:35   #27
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Thxs, order placed😊
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Old 01 July 2016, 04:41   #28
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Hope they suit you!

The only extra thing you might need depending on the hub width of your old wheels is some washers as spacers. The sandhopper hubs were about "four washers" narrower in width than my OE wheels so I put some 27mm stainless washers on the axle to push the sandhoppers away from rubbing on the leg in some circumstances.
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Old 01 July 2016, 06:14   #29
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Ok cheers, I'll get some ready
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Old 01 July 2016, 06:36   #30
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Had a 4" stainless handles welded onto mine which makes handling the buoyant wheels a doddle. They sit above the transom when in the up position and make locating on the stud very easy,
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