Archive for justcycling.myfastforum.org Just Cycling
 


       justcycling.myfastforum.org Forum Index -> The Garage
headwind

Tacx trainer bike mounting...

Well, Ive been humbled by Tacx, and wishing my PhD was in mech engineering...ugh...

I believe I now have properly assembled the trainer, but now have real serious concersn on how exactly the bike stays put in the frame.  On the drive side, I have 2 screwing "wing nuts".  Why there is 2 mystifies me.  Then on the non drive side the arm that holds the skewer also moves.  basically, I cant see how a bike stays put without real fear that it could pop loose from the non drive side causing catastrophic failure.  Um, it really makes no sense.  Such a simple thing is substantially over engineered.

HELP!

...and thanks HW
cardinal guzman

Hi HW,

I think pictures would be necessary for a safe diagnosis. Sounds like you need different skewers if the one's currently on the bike could pop out? Had to change Mrs G's skewers as hers were the same.

Remember, never put your best bike on the trainer, as rocking all over an immobile system places substantial tangential stresses on your lugs (unless you have absolutely perfect technique Smile ).
Juggernaut

My tacx trainer came with a special tacx skewer that ensures a snug fit with the trainer itself. Had to buy a second one for the wife's bike so I didn't have to keep swapping skewers around (another skewer that is, not another trainer)...

The moving arm should be in the locked position, with the lever down and the arm fully extended. If you've adjusted the other side (the two wingnuts you refer to) then your bike's skewer should now be tightly sandwiched between the two. Ignore the two wingnuts - I just treat them as one. It's a bit like fitting the skewer itself actually - tighten one end so the arm on the other, when closed, results in a tight fit...
headwind

Juggernaut wrote:
My tacx trainer came with a special tacx skewer that ensures a snug fit with the trainer itself. Had to buy a second one for the wife's bike so I didn't have to keep swapping skewers around (another skewer that is, not another trainer)...

The moving arm should be in the locked position, with the lever down and the arm fully extended. If you've adjusted the other side (the two wingnuts you refer to) then your bike's skewer should now be tightly sandwiched between the two. Ignore the two wingnuts - I just treat them as one. It's a bit like fitting the skewer itself actually - tighten one end so the arm on the other, when closed, results in a tight fit...


many thanks juggernaut...i guess ive sort of gotten to that point by defualt.  question?  have you ever had a sense of fear that the "moving arm" with the lever moves while riding...meaning the lever pops up?  Is there some way of securing it besides the gentle click of pushing it down?  Im thinking about duct taping it to the frame to avoid it inadvertently popping up and setting me free...

again, thanks alot for the suggestions...the wing nut thing was a loser for me too.

cheers, hw
Juggernaut

Nope, never had that fear. Actually, I normally leave the moving arm in the locked down position and just tighten up the nut on the other side until I'm happy it's all tight enough, which is about when the tension on the screw starts forcing the trainer's arms apart. It's pretty obvious that once it gets to that point that there's no way the bike is ever going to come out (if you're using the tacx skewer, and assuming your nightmare scenario of the locking arm popping up doesn't happen) So if you duct tape it down, you could just leave it like that and it'll never move.

There does seem to be a fair amount of flex in the tacx trainers. It's the only trainer I've owned so I don't know any different, but others have commented that it isn't as stiff as other makes. Regardless, I've done a few miles on it now and never had any problems.

Anyway, just spent an hour and a half on it, and managed to set a new personal best on the route, despite feeling like crap for the first hour. Now I have to go mop up all the sweat before the wife tells me off...
headwind

thanks for the help juggernaut.  and well done on your ride!
Bartali

Hi HW - Like Jugganaught, I've never had any problem with the lever popping up.  Happy training - I hope to start again at the end of the week.

       justcycling.myfastforum.org Forum Index -> The Garage
Page 1 of 1
Create your own free forum | Buy a domain to use with your forum