I used to struggle with this until a mate said “GT85”. I tried everything else, neat acetone, all sorts.
So what you do is spray it on, and leave for 20-30 mins. Give it a rub in and do it again.
Then come back respray it and with a towel, work away from you, pushing the glue along teh wheel rim. (Don’t waste time going back and forth, it does not work). Add some more GT 85 over the next 6", work in with a brush, and continue. (It sis worth working in earlier dose with a brush as well.
Frankly wheels that have taken several hours to clean are done in around 15-20 mins.
Take your time. Keep pushing the glue away from you and changing the towel around as it wil get clogged up.
Now, GT85 contains ptfe and I am always concerned this might stop teh next layer of glue sticking, so i always clean teh rim with neat acetone. (By the way the cheapest way to get this is a plumbers’ merchants - ask for plastic pipe cleaner. I don’t use nail varnish because you have other contaminants in there as well).
A couple of things:
- Do it in the open, these things stink and are not necessarily good for you.
- I put te hwheel in an old dumb trainer, which I place on a workmate. Works great for me (Just use a rear skewer with the front wheel)
- Wear some gloves.
Also I found tape glue much harder to get off than proper tubular tyre glue. I help this helps. The GT85 has made riding tubulars and changing them bearable.