We built a 3 wheel rail rider. Our dfw doesn't migrate to the nail head like the rear wheels do. Is the inner hub snagging on the axle slot causing the car to hop or do I not have enough axle bend causing too much of the inner wheel to snag imperfections on the track rail? Also, with positive camber how do I get the dfw to migrate out instead of running the body of the car. Thanks in advance.
Dfw issues
- Thread starter Dennis
- Start date
First off thanks for the super quick reply. So maybe I didn't have enough bend and there was too much of the inner wheel rubbing the rail? It seemed to snag something on the flat part of the track. The car was always first down the ramp but slowed way down on the flat part. My kid is super bummed. Wish we didn't have to wait a whole year to race again.
Was this on a wood or aluminum track? The track had a center rail?
If the car jumped, most likely it was a case where part of the rail (or seam) was jutting out, catching your car on the DFW side.
If it was the slot, you would have seen the effect the whole track.
As to waiting longer, no need. There is a race with the NPWDRL.com upcoming, plus Mid-America, and I think that DerbyDad is running something soon, too. The Box Stock class is for cars using only kit parts — no vendor lathed parts.
If the car jumped, most likely it was a case where part of the rail (or seam) was jutting out, catching your car on the DFW side.
If it was the slot, you would have seen the effect the whole track.
As to waiting longer, no need. There is a race with the NPWDRL.com upcoming, plus Mid-America, and I think that DerbyDad is running something soon, too. The Box Stock class is for cars using only kit parts — no vendor lathed parts.
Was a wooden center rail track. The only reason I ask is because no other car seemed to have this issue. A lot of other cars were rail riding too. So it makes me wonder if too much of the wheel was rubbing the rail because of the lack of axle bend ( which was about 3 degrees). Or maybe I sanded and polished too much axle material away cause the back of the wheel to run the track. To top it off we participated in track set up so we would have a chance at a few trial runs. Our run times were faster than the winners today. During set ups our car fell off the track due to some gate malfunction where it popped back up and kicked our car off the track. Damn it. So much work to come in 4th.
That might be your clue right there. If the alignment was knocked out in the incident it could make the car slow faster when it coasts down the flat. If you recheck your drift now, is it different than where you set it before the event?
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