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Power Tap Campy to SRAM

thekidduxcthekidduxc
in General Training Discussions

Road bike is a Campy Corus 11 speed. 

Tri bike is a SRAM10 speed. 

I have a Power Tap on my rear wheel of the Road bike.

PT has a Campy compatible PT  free hub. 

Want to switch to a PT wheel to Tri/SRAM bike. 

Do I simply need to install a SRAM compatible freehub body to make the switch? Is it more complicated than this? My LBS made the comment that they were going to call Sarius to discuss the swap. I thought it was less intense. 

 

I have the new PT pro hub. It is 60 days old. 

Comments

  • kjanracingkjanracing
    I'm thinking you are correct in your thinking. I have Campy 10 on all my bikes and my wife's. I'd like to go with something like a 11 or 12/28 cassette on her tri bike. She has a PT Campy hub. I've read of people changing the hub with cassette-Campy and SRAM - onto the PT wheel. Share what you find. Thanks, Kurt.
  • John WithrowJohn Withrow

    I bought a PT (the older style SL+) on eBay 2 yrs ago and it came with a Campy freehub. Swapping to the Shimano freehub was very simple, but I'm glad I had the guys at my LBS do it. There is apparently a little spacer or ring or something and it goes on one side for the Campy and the other side for the Shimano. I don't remember exactly which way, but I definitely would have missed that if I did it myself. I'm not sure if the newer style PT wheel would still have this small detail, but I imagine it would because the freehubs are still the same as they were 2 yrs ago, only the PT internals have been redesigned. All-in, it took the mechanics at my LBS about 2mins to do it, but they clearly have done dozens of these in the past.

  • thekidduxcthekidduxc
    John - I think the plastic spacer you refer to is related to the wheel manufacturer. Mavic maybe different than zip or american classic, etc.

    I do have the plastic piece which allows for the freebody hub swap between SRAM and Campy for my wheel manufacturer - I use Mercury Wheels. Is there anything else I am missing?
  • rboglerbogle

     I believe Withrow is refering to a washer switch up on/in the PT hub from left side to right side, when you switch from campy to shimano/sram. I was just looking at this the other day in the PT manual, since my freehub body is gouged out and needs to be changed. (cant get cassette on and off without prying them off. )

  • John WithrowJohn Withrow
    Rian-- not to steer the thread off-topic, but you probably don't need a new freehub. Just take a metal file and file down the little pieces that stickup near the gouges. This will allow the cassette to slide on and off easier. As long as they aren't so bad that it causes slippage of your gears, you should be fine. The pressure is always in the same direction and there are lots of different slots that hold the cassette on, so filing off the scraps shouldn't hurt anything.
  • Dino SartiDino Sarti
    I think you just need the freehubs and cassettes. The PT hub is awesome. You don't need any tools and don't even need to remove the cassette from the free hub body. Just hold the wheel, pull on the cassette, it comes off and then swap.
  • rboglerbogle

     This is a hijacking.....@Withrow. Thanks John! Did the filing trick. I'm on the fence about a new freehub, this time I switched cassettes the gouges were longer and deeper , and I started wondering about: what happens if rings rotate too much? I probably wont switch again for awhile so I can procrastinate the decision (what I do best). If I replace with a the steel freehub it wont gouge (apparently) but I wonder  about the added weight difference compared to the alloy...

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