I've been pretty curious about this topic for a while so I finally did some 
digging around. Nothing anyone hasn't already said on this and other 
threads, but I'm adding it just for additional info if anyone is interested.

The basic protective tape seems to be  3M™ Industrial Protective Film 7070UV: 
https://www.3m.com/3M/en_US/company-us/all-3m-products/~/d/b40066699/
There's even a link to a PDF at the bottom of that page that shows a 
Bicycle Application Concept. It doesn't say anything about removing the 
adhesive when you take the tape off, but since it is designed for that sort 
of thing, I doubt it will harm paint.

They also make a thicker version 7071UV, prob for stuff that gets hit 
harder.

Both 7070 and  7071 are available at McMaster Carr. They may be available 
cheaper elsewhere but at least McMaster calls out the specific product on 
the listing: 
https://www.mcmaster.com/fastening-tape/heavy-duty-surface-protection-tape/

Digging into 3M's aerospace category gets to this amazing page about 
products for helicopter rotor blades: 
https://www.3m.com/3M/en_US/aerospace-us/segment-solutions/rotor-blades/
The stuff for helicopters is extremely thick and says it offers "limited 
conformability" 
https://www.3m.com/3M/en_US/company-us/all-3m-products/?N=5002385+3292668475&rt=rud

I've also seem people recommend low friction protection tape, which is 
meant for lining chutes in factories and fulfillment centers. It offers 
impact protection as well: 
https://www.mcmaster.com/fastening-tape/low-friction-uhmw-tape-8/
It's acrylic, not polyurethane.Maybe I'll get some of the for my daughter's 
scratched up plastic slide.

But for my bike, I'd probably just go with the 3M 7070UV since it's really 
designed specifically for protecting paint, but maybe not structural 
elements, from minor impacts on land vehicles.

I love tape.

BTW - has anyone used the gaffe tape from McMaster? How does it compare to 
the Gaffe brand gaffe tape? I hate bad tape. 
https://www.mcmaster.com/fastening-tape/matte-duct-tape/

Paul in AR

On Wednesday, March 31, 2021 at 4:38:39 PM UTC-5 Roberta wrote:

> Helicopter tape to put under the brake wire that runs along the bottom of 
> the top tube, so perhaps 1 1/2 -  2" wide to allow for wire movement and a 
> not too perfect tape application.  I carry my bike on a hanging bike rack 
> and currently protect the frame by putting inner tubes between the wire and 
> frame, but that's becoming annoying.
>
> There's so many out there and I'm not sure which will work well and not 
> effect the paint.  My local auto supply place said they never heard of it.  
> Neither did the LBS.
>
> Thanks,
> Roberta, AHHilsen
>

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