| Author | Message | ||
     Dlg6c2 |
Has anyone successfully used PH400s with a Pro Taper handlebar setup? Assuming it is not possible, are there any resistance heaters out there that will fit in the handlebars with a narrow inner diameter? I don't want to use heated grips because I have Rizoma aftermarkets and the left grip install was permanent thanks to very tight machining by both suppliers, WD-40 and a stout rubber mallet... | ||
| Mikef5000 |
I bet you could call up Polly Heaters and they could give you the overall outside diameter of the heaters. (that is, if nobody answers you here) | ||
| Ft_bstrd |
I have emailed the Polly Heater folks. I really don't like grip heaters. I am doing something tragically wrong. It doesn't matter what I do, can't get the glue to adhere when I fire the heaters up. I'd prefer the Polly Heaters to just about anything. | ||
| Spike |
Safety wire? My traction grips will still squirm around after running the polly heaters long enough, but the safety wire keeps them from moving enough to cause a problem. | ||
| S_palmer |
My buddy drilled out the bar ends to fit the heaters on his. Problem was after we got them installed you could hardly feel the heat. We assumed it was because the bars were aluminum. Anyone else installed pollys in aluminum bars? | ||
| Newbolt |
I did the same with Renthal bars. Drill them and clean them with a dremel . The heaters get hot, but not like the stick-on ones I put on the wife's bike. I attributed it to the bars being aluminum as well. To get the grips to stick use the glue from the Buell traction grips. It has worked on the Wife's for over a year and they do not move. I used plan old crazy glue on mine and so far so good. I use the heaters on my hour ride to work and they do not come loose. | ||
| Ft_bstrd |
I have safety wired my grips as well to no avail. The left grip particularly still "squirms". Steel has a heat conductivity of about 21 Watts per meter per degree C. Aluminum has a heat conductivity of about 221 Watts per meter per degree C. Air has a heat conductivity of about .01. It would seem that aluminum has a higher heat conductivity than steel. I knew I shouldn't have slept through those physics classes. | ||
| Dlg6c2 |
Here is my best guess as to why the aluminum bars don't work as well with heaters of any sort.. As Ft_bstrd says "it would seem that aluminum has a higher heat conductivity than steel", he is correct. But this doesn't necessarily mean the aluminum will make your hands warmer, it means it is capable of transferring heat at a greater rate than steel. In both cases, the heat source sits directly under your hands while the handle bar extends, virtually uninsulated, through an open current of air between the handle bar grips. This open air surface acts as a heat dissipating fin. Steel has a greater resistance to transferring heat so more heat is able to build up at the grips. Aluminum, with its higher thermal conductivity, allows heat to travel with less resistance across the full length of the conductive surface. Since most grips are somewhat insulators, the heat has a tendency to dissipate at an easier point of transfer, the exposed portion of the handle bars open to the cool air. Ok, I'll shut Bill Nye up now.... I've ordered the heaters for my aluminum bars anyway and will use them with my aluminum grips. I'll let you all know how it goes. Regardless of what that Fourier guy says, it has to be warmer than nothing! |
