Search found 2816 matches
- Wed Mar 20, 2024 12:14 pm
- Forum: Do-It-Yourself
- Topic: Mulling a track build...
- Replies: 43
- Views: 1727
Re: Mulling a track build...
I have some ideas about putting together a neighborhood derby as well. Are you considering the two or four-lane version? We built a homemade test track once with a nearly catenary curve (like Piantedosi / MicroWizard) section which seemed to benefit from a longer, single piece of lumber. I think we...
- Wed Mar 06, 2024 4:22 pm
- Forum: Car & Semi-Truck Construction
- Topic: Cutting the DFW notch?
- Replies: 24
- Views: 1137
Re: Cutting the DFW notch?
Here is a stand-alone illustration of the three-notch approach courtesy of Doc Jobe:FatSebastian wrote: ↑Wed Mar 06, 2024 3:50 pm
- Notch out the DFW hub recess by ~1/16", and then make separate notches for tread clearances (so three notches)
https://twitpic.com/bze4ui
- Wed Mar 06, 2024 3:54 pm
- Forum: Car & Semi-Truck Construction
- Topic: Cutting the DFW notch?
- Replies: 24
- Views: 1137
- Wed Mar 06, 2024 3:50 pm
- Forum: Car & Semi-Truck Construction
- Topic: Cutting the DFW notch?
- Replies: 24
- Views: 1137
Re: Cutting the DFW notch?
I think "You'd need a notch for the wheel edge as it spins to ensure clearance, but also a notch for the hub to be closer to the center of the body". Yes, there are two generic approaches: Notch out the DFW hub recess by ~1/16", and then make separate notches for tread clearances (so...
- Wed Mar 06, 2024 1:54 pm
- Forum: Car & Semi-Truck Construction
- Topic: Cutting the DFW notch?
- Replies: 24
- Views: 1137
Re: Cutting the DFW notch?
I still kind of tend to want to bring the DFW side in a 1/16", though I haven't really done extensive comparison testing to see if it makes much of a difference. I guess I just feel better about the car when we do. The need, and depth, of an inset can be argued via geometrical consideration fo...
- Wed Mar 06, 2024 11:22 am
- Forum: Car & Semi-Truck Construction
- Topic: Cutting the DFW notch?
- Replies: 24
- Views: 1137
Re: Cutting the DFW notch?
...we've started putting a lot more camber on our DFW axles, and I think that keeps the edge of the [trailing rear] wheel further from the body. Ah. So, the more extreme positive camber of the DFW obviates the need to add a recess / cut-in behind the DFW. Makes sense, although TurboDerby's ebook (p...
- Tue Mar 05, 2024 6:47 pm
- Forum: Car & Semi-Truck Construction
- Topic: Finalizing my car - 3 questions for the PWD masters
- Replies: 22
- Views: 1188
Re: Finalizing my car - 3 questions for the PWD masters
...how do you personally like to precision tune your rear wheels ...? ...we like an adaption of Sporty's rather straightforward "no front wheels" alignment method ... using a thumbtack to elevate the front of the body into its racing configuration. I see that during our extended derby hia...
- Tue Mar 05, 2024 6:30 pm
- Forum: Car & Semi-Truck Construction
- Topic: Tips and tricks for storing sized axles
- Replies: 2
- Views: 84266
Re: Tips and tricks for storing sized axles
This is how I like to store my different sized axles and keep them all together... Corrugated cardboard is how we always stored our numbered drill bits, and pin gages, for PWD purposes. But it never occurred to me to collect axles this way too. IIRC it requires a thinner-than-usual corrugated cardb...
- Tue Mar 05, 2024 5:31 pm
- Forum: Car & Semi-Truck Construction
- Topic: Cutting the DFW notch?
- Replies: 24
- Views: 1137
Cutting the DFW notch?
I am curious how others cut the notch / recess / inset into the body to accommodate the offset of the dominant front wheel (DFW). In our racing heydays we pretty much just shaved off the entire body by ~1/16" from the front until just past the back of the wheel ( here's a body so cut from Vitam...
- Tue Mar 05, 2024 1:48 pm
- Forum: Car & Semi-Truck Construction
- Topic: Finalizing my car - 3 questions for the PWD masters
- Replies: 22
- Views: 1188
- Tue Mar 05, 2024 1:05 pm
- Forum: General Car/Truck Racer Topics
- Topic: Post-Race Feedback, please!
- Replies: 13
- Views: 777
Re: Post-Race Feedback, please!
Your car has a flaw that went unnoticed (like a wheel binding or rubbing)... A few more thoughts... Did you narrow the block or sand the sides down at all in your design? If your block isn't a full 1.75" wide where the nails insert, then the wheels can drag against the rail. I've seen this hap...
- Mon Mar 04, 2024 2:16 pm
- Forum: Car & Semi-Truck Construction
- Topic: Finalizing my car - 3 questions for the PWD masters
- Replies: 22
- Views: 1188
Re: Finalizing my car - 3 questions for the PWD masters
...how do you personally like to precision tune your rear wheels (given the axles are bent with 3 degrees camber, not drilled into the block at 3 degrees)? We first ensure that the rear wheels migrate out while the car is rolling frontward and backward, after which we like an adaption of Sporty's r...
- Mon Mar 04, 2024 2:03 pm
- Forum: Car & Semi-Truck Construction
- Topic: Finalizing my car - 3 questions for the PWD masters
- Replies: 22
- Views: 1188
Re: Finalizing my car - 3 questions for the PWD masters
Would it matter if the weight is embedded center of the car, or closer to the side of the DFW? Considering that the car is supported by three wheels, putting trim weight close to the DFW also puts a wee bit more on both the DFW and the rear wheel behind the DFW, and a wee bit less on the opposite r...
- Mon Mar 04, 2024 10:15 am
- Forum: Car & Semi-Truck Construction
- Topic: Finalizing my car - 3 questions for the PWD masters
- Replies: 22
- Views: 1188
Re: Finalizing my car - 3 questions for the PWD masters
You've done your homework, and gotten an excellent response from VK (as usual), and good info over in the wheel wax thread. I'll only add a couple of thoughts... Still deciding between a 3, 2.5 or 1.5 degree camber on the rear axles. One of the under-advertised benefits of camber is that it lifts th...
- Sat Mar 02, 2024 9:00 pm
- Forum: Car & Semi-Truck Construction
- Topic: Paint compatibility! Duplicolor + Water based Acrylic
- Replies: 17
- Views: 883
Re: Paint compatibility! Duplicolor + Water based Acrylic
Tons of work that shows - and paid off! Impressive all around. The reflections painted into the Pontiac windows are an especially nice touch.