I have been getting some older bikes and renovating them for a charity. A common bike has been older "15 speeds" with 5 cog rears, I have had 3 so far with Falcon freewheels. I want to get a tool to remove these. I understand from reading past posts that many people advise just going to the bike shop to have these removed, then getting rid of them and replacing with something else. I want to have the ability to get these off myself so I can service the bearings. The goal on these bikes is to get them back on the road at the lowest cost.
I have access to the Park FL5. As close as I can measure, this tool is about 1mm to large, though the same number of splines. My understanding is that the Park tool that they sell as a Falcon removal tool is even larger than this.
Some of my reading leads me to think that the tool sold as Shimano Boss will fit the Falcon. I found this ebay listing but they are out of stock.
Kengine FR-04 Old Style Shimano Freewheel Remover Bike Tool fits FFS TL-FW20 | eBay
Can anyone verify that this is likely the tool I need, in which case I can start watching ebay for a used one?
BTW, how do you measure a spline tool, across the teeth (which would be a larger number) or across the gaps?
Thanks in advance.