Search found 532 matches

by davet
Sun Jan 03, 2021 7:51 pm
Forum: Car & Semi-Truck Construction
Topic: Cutting grooves in side of car where wheel edge might touch
Replies: 7
Views: 5164

Re: Cutting grooves in side of car where wheel edge might touch

Our last 3 cars all had these grooves like you made. First, it is most needed when using BSA axles. They are smaller diameter and allow some slop in the hub. If you run a steep angle on DFW and 3 degree angle on rear axles you will get contact between wheel edge and body unless you use washers. We r...
by davet
Sun Jan 03, 2021 7:45 pm
Forum: Car & Semi-Truck Construction
Topic: Cutting grooves in side of car where wheel edge might touch
Replies: 7
Views: 5164

Re: Cutting grooves in side of car where wheel edge might touch

Our last 3 cars all had these grooves like you made. First, it is most needed when using BSA axles. They are smaller diameter and allow some slop in the hub. If you run a steep angle on DFW and 3 degree angle on rear axles you will get contact between wheel edge and body unless you use washers. We r...
by davet
Fri Jan 01, 2021 11:48 pm
Forum: Car & Semi-Truck Construction
Topic: The BSA nail
Replies: 13
Views: 7512

Re: The BSA nail

Not sure why step 8 has an emoji. Can't get rid of it.
by davet
Fri Jan 01, 2021 11:41 pm
Forum: Car & Semi-Truck Construction
Topic: The BSA nail
Replies: 13
Views: 7512

Re: The BSA nail

1) We would square our drill press table front to back and side to side. 2) Put axle in chuck just as far as it would be in the block of wood with a wheel. ( If you don't slide into chuck far enough the axle will bend during following steps) 3) Using a file that is smooth on edge we would file down ...
by davet
Mon Mar 09, 2020 8:33 am
Forum: Car & Semi-Truck Construction
Topic: Lightnin's Simple Alignment Test
Replies: 19
Views: 17117

Re: Lightnin's Simple Alignment Test

Awesome Speedster.
Off topic yes. I had sent you a PM but it must not have gone through.
Good to see you still here doing this for the kids, and adults.
by davet
Sun Mar 08, 2020 1:42 pm
Forum: Car & Semi-Truck Construction
Topic: Lightnin's Simple Alignment Test
Replies: 19
Views: 17117

Re: Lightnin's Simple Alignment Test

I remember you telling me that years ago about helping a kid out with a fast car every year. Don't other parents complain? I was asked by the pack we were with to have a "fix it" table at the race. The kids would get 2 trial runs before they had to complete check-in. A few kids came to me with issue...
by davet
Sun Mar 08, 2020 7:26 am
Forum: Car & Semi-Truck Construction
Topic: Lightnin's Simple Alignment Test
Replies: 19
Views: 17117

Re: Lightnin's Simple Alignment Test

Speedster,
Are you helping the local kids prep for their races? Is it just scouts or are you finding other avenues to help also?
by davet
Sat Mar 07, 2020 6:51 pm
Forum: Car & Semi-Truck Construction
Topic: Lightnin's Simple Alignment Test
Replies: 19
Views: 17117

Re: Lightnin's Simple Alignment Test

We used this method for years ever since LB showed us how. It seems dead on. We use a balled up piece of duct tape under the front of the car, in the dead center between the axle holes. We ball it up to get to the same height as the car sits with the DFW installed. The duct tape stays stuck to the s...
by davet
Sat Mar 07, 2020 11:31 am
Forum: Car & Semi-Truck Construction
Topic: How Speedster builds a car
Replies: 2
Views: 3723

Re: How Speedster builds a car

I agree on the bent axles for the rears. It takes more work, time and a good method for doing this and the understanding of what you're looking for. With bent axles you can get each wheel to come off the body and go to the head over the exact same distance and you know both are dead straight. Twisti...
by davet
Sat Mar 07, 2020 9:43 am
Forum: Car & Semi-Truck Construction
Topic: Cheaper alternative than liquid glass
Replies: 7
Views: 5137

Re: Cheaper alternative than liquid glass

Red Rocket has worked well for us. Lasts forever using on derby cars.
by davet
Fri Mar 06, 2020 11:26 pm
Forum: Car & Semi-Truck Construction
Topic: So I sprayed my axels with duport chain saver...
Replies: 6
Views: 4585

Re: So I sprayed my axels with duport chain saver...

Hopefully you did well tonight and qualified for Districts.
Use 3M Dry-Type silicone from NAPA.
The purpose of the silicone is to shed the oil. Without it the oil hangs up between the axle and the wheel bore. Very little oil is needed with the wax in the wheel bore and the silicone in the axle.
by davet
Fri Mar 06, 2020 11:18 pm
Forum: Car & Semi-Truck Construction
Topic: One more question.....
Replies: 1
Views: 2642

Re: One more question.....

Not sure what you are referring, left and right of the axle.
Rears bent 2.5 degrees and front should be minimum 5 degrees.
We bend ours to where it just cleanly can slide through the wheel bore.
by davet
Fri Mar 06, 2020 10:55 pm
Forum: Car & Semi-Truck Construction
Topic: Race Friday. My latest problem....
Replies: 2
Views: 2936

Re: Race Friday. My latest problem....

How did you do tonight? I just saw your post.sorry.
Search on YouTube a video by Lightninboy titled Simple Alignment Test for Pinewood Derby.
We used this method to align our bent axles and to check for a good drill when we went that route.
It is the best way to align rear wheels
by davet
Fri Mar 06, 2020 10:45 pm
Forum: General Car/Truck Racer Topics
Topic: Wheel Bore Sealer
Replies: 9
Views: 6115

Re: Wheel Bore Sealer

We started using the Simple Green at our church workshops 2 yrs ago. We use Novus first to get out the imperfections and polish that out. We then just swipe some SG in the bore with large cotton pipe cleaners. We let the wheels set while we polish the axles then we polish the bores with a drill and ...