On my MacGregor 25, i have several pulley that will need to be replaced. I would like to know if there is a way to repair them by replacing the wheels or it is better to replace the complete assembly?
Those blocks look like original equipment to me. I am unsure whether the sheaves (wheels) can be replaced, but even if they could I think I would replace them with something more modern. If you have a local chandlery you may be able to hit some end-of-season sales, otherwise check out defender.com. They usually have very competitive prices and if you buy, then find the exact same thing cheaper within a reasonable time they will refund you the difference IME. Look at Ronstan, Schaeffer and Garhauer, they are usually reasonably priced, especially when you don't need offshore strength/quality.
Blocks that size are pretty inexpensive, even full price. I would not screw around and replace them. I have been using harken on my boat for my upgrades, if nothing else they are pretty light and strong, but there are less expensive choices that fit the bill quite well.
Wow,
Need to stop looking on the web site of Defender.com. I want to keep my money to buy a GPS for next summer. Where I am sailing there are lots area that are not very deep (Lake Des Deux Montagnes). So GPS will help to remove the stress of hitting a rock.
I will check for the block. Some (single pulley) are not so expesive but other are in the area of 150.00. In fact, my soon is studying machinist. So I may challenge him some repair.
It is difficult to find a exact replacement for the thru-bolted pulley sheaves. I tried drilling out the side plates, since they are pressed onto the pulley axles, and replacing the sheave itself worked but the unit is not as strong and I ended up with issues that bothered me, having to obtain width for the sheave with small washers etc. Instead of thru-bolted there are side mounting pulleys that require shorter fasteners you might try.
Unless you get a combination GPS and Depth guage, the GPS won't help you navigate depth issues.
I think you are just as well off with a chart of the lake you are on and crank up the keel when necessary using landmarks for navigation. The keel is a pretty good depth finder too.
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