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Old 16 June 2016, 14:42   #11
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Good call to do a nice job but far too expensive for a one off DIY job. Think I need a machine shop with a big pillar drill!

Slightly frustrating that the bow dolly I'm currently modding also has a nominal 25mm axle and that is slightly under so these wheels slide on that perfectly... which is their backup use but I'd rathered they'd done that on the Zodiac legs.
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Old 16 June 2016, 15:33   #12
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How about a quick and dirty way Fenlander.. use a broom shaft or something which is slightly smaller diameter.. stick a roll of sandpaper round the shaft. Put the wheel on and spin it till its your size. Half a mm shouldnt take too long to spin ?

Just a though.. but what I would try
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Old 16 June 2016, 16:26   #13
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an h11 is the size you need and they are 20.50 on ebay or a 1 inch blacksmiths drill would give you 25.4mm in theory
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Old 16 June 2016, 17:58   #14
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Thanks re the H11 breezeblock. Would it cut poly plastic??

Gurnard I've never had much luck sanding this fairly soft poly plastic... it just seems to roughen and then go no further.
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Old 16 June 2016, 18:05   #15
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Wood rasp would do it or a lath if you have access to one, but there I have these and drill bits that could do it! Pity you aren't closer
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Old 16 June 2016, 18:42   #16
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Appreciate the thought Nick... distance so often intrudes.
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Old 17 June 2016, 02:16   #17
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Thanks re the H11 breezeblock. Would it cut poly plastic??

Gurnard I've never had much luck sanding this fairly soft poly plastic... it just seems to roughen and then go no further.
yep it would cut plastic no probs
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Old 17 June 2016, 03:16   #18
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Thanks re the H11 breezeblock. Would it cut poly plastic??

Gurnard I've never had much luck sanding this fairly soft poly plastic... it just seems to roughen and then go no further.
You need something quite coarse - really low number glasspaper or a round Surform or similar. But you only need to remove a tiny amount (to 25.2 not 26 or 27) so should work fine.
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Old 17 June 2016, 03:59   #19
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Think if I had a suitable round/curved rasp or very coarse file... even some very coarse non-clog sandpaper in the shed I'd give it a go. But if I have to buy something I'd like to aim for a nice finish so then it's a reamer at 20, a large dia (blacksmiths) spiral drill at 13... or for 20 another pair of wheels listed with a 25.4mm bore where I ensure the seller understands they can't be at all undersize on the bore.

Will decide after a late breakfast.

As a matter of interest a couple of years ago I bought new transom wheels from a established online chandlery for about 100 and when I came to put the wheels on the legs I had to hammer them on and one side would hardly turn at all. Sent back and refunded... then bought some OE Zodiacs.
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Old 17 June 2016, 07:11   #20
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My first thought was a 26mm flat blade wood bit but whatever I use needs to self centre itself or it will chew the plastic wheel bore and I need it to stay quite smooth.
one other idea which I have used if you have the flat blade wood bit is you plug the hole with a bit of 25mm dowel. Mark your centre and then use the wood bit to drill out the new hole, just take it really slow to try and keep it centred as you go!
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