Tandem Cycling - New Wound Up fork on Old Kuwahara tandem

Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.




lhbernhardt
06-08-08, 01:25 PM
Well, I finally replaced the Reynolds Ouzo Pro all-carbon single-bike fork on my 1980 Kuwahara tandem with a tandem-rated Wound Up carbon fork. Although not tandem-rated, the Reynolds fork performed admirably on a non-loaded (no racks or panniers at all) tandem with 320-lb crew weight for over 4,500 km. This Reynolds fork did feel a bit soft and visibly flexed under hard braking, and the reasons for replacing it were its "soft" feel and a bit of concern in the back of my mind on fast descents that we weren't on a "tandem-rated" fork.

The Wound Up fork is way, way beefier. I think it really is overbuilt. It looks more like a mountain bike fork and adds at least a pound over the weight of the all-carbon Reynolds fork; I keep expecting to see shock absorbers on the ends. Although it provides much firmer handling (somewhat easier keeping the bike in a straight line, especially at lower speeds), I will need to replace the front brake caliper. I'm running a short-reach Ultegra dual pivot, and the pads at their lowest setting just clear the tire bead (the pads are at the extreme edge of the rim). I had wanted to switch to Campag calipers, but have had to order medium-reach Tektro calipers since Campag doesn't make a medium-reach brake. (The Record calipers go to 50mm, just one mm more than the standard 49mm of most short-reach brakes. This still isn't enough to compensate for pad wear on the side where the pad height moves up as the pad wears down.)

On the plus side, the fork now raises the front end a little bit, more closely approximating the original height of the steel fork that came with the bike and probably improving the steering geometry back to original factory specs, although not by much. I now feel much better about bombing descents, knowing the fork is guaranteed not to snap. I can't imagine that honking fork crown breaking. It's too bad Reynolds and Alpha Q don't make a carbon tandem fork with 1" steerer. The Wound Up is such an ugly fork.

- L.


uspspro
06-08-08, 01:54 PM
It's too bad Reynolds and Alpha Q don't make a carbon tandem fork with 1" steerer. The Wound Up is such an ugly fork.
- L.

+1

I wonder how a cross fork would fare?

http://www.bikemannetwork.com/biking/p/COMPFKCROSS/FK1263

zonatandem
06-08-08, 08:40 PM
In our years of tandeming have broken one fork; and it was an experimentnal steel (Reynolds 531); it did not break 'til we had 15,000 miles on it.
Had a bit of odd feel to the front of bike. Stopped, check front tire and continued on home (climbing a 1/2mile hill). Got tandem into garage, took of front wheel for a closer look and . . . PLINK! . . .fork blade fell off. Whew?!
Some 'cross folks have used c/f forks with some good reports. And some of those take a worse beating than an average tandem road team.
While the Woundup does not look as 'svelte' as an Alpha Q it does the job very well. Peace of mind is a good thing!
Pedal on TWOgether!
Rudy and Kay/zonatandem


KRhea
06-08-08, 10:30 PM
Over and up here in "the land of CycloCross" 100's of us ride carbon cross forks and beat the heck out of them season after season.
Not sure how the load forces match up between a single cross rider/bike and a "twofer" but I have to admit to using a Winwood cross carbon/alloy steerer fork on one of our tandems for 3 yrs with no problems.

Have also used Wound-Ups with great success and now have Alpha Qs on both tandems.


KRhea

lhbernhardt
06-10-08, 10:23 PM
Over and up here in "the land of CycloCross" 100's of us ride carbon cross forks and beat the heck out of them season after season.
Not sure how the load forces match up between a single cross rider/bike and a "twofer" but I have to admit to using a Winwood cross carbon/alloy steerer fork on one of our tandems for 3 yrs with no problems.


KRhea

Yes, I could have gotten a tandem-rated cross fork, but I didn't want to go back to cantis or v-brakes. V-brakes just don't work at all with road levers (the compensators neutralize any mechanical advantage they might have had), and cantis lose too much power at the transverse cable. Dual pivots are the firmest, most efficient, and most elegant brake technology ever devised for bikes, as long as you don't use tires greater than about 25mm in diameter.

- L.

Knubby
06-10-08, 10:48 PM
Just wondering if you can post a picture of your Kuwahara. I have a 1986 model and want to see the differences between them. Thanks