Originally Posted by Sporkinum
I have patched with electrical tape before, without glue. Worked OK on a low pressure mountain bike tire as long as the hole in on the outside and the tire can hold the tape in place.
+1!
The trick with electric tape is to clean the tube WELL before taping. Use rubbing alcohol if you have some. And burnish the tape really well. I use the smooth rounded end of a screwdriver handle. Clean that with the alcohol PRIOR to burnishing as well. Gets any grease off that might compromise the tape. And use a couple of pieces of tape crisscrossed.