Search found 17 matches

by Yoderby
Sun Jan 21, 2018 11:41 pm
Forum: Car & Semi-Truck Construction
Topic: Weight placement, cog question
Replies: 2
Views: 4692

Weight placement, cog question

Assuming I have cog 3/4” in front of rear axle, does it matter if there is NO weight towards front or should I add some weight towards front?
by Yoderby
Sat Feb 06, 2016 11:09 pm
Forum: General Topics
Topic: Rail Riding drifting wrong direction
Replies: 23
Views: 27486

Re: Rail Riding drifting wrong direction

Amazingly, car placed first overall, thanks again for the tips and feedback!
by Yoderby
Fri Feb 05, 2016 11:14 pm
Forum: General Topics
Topic: Rail Riding drifting wrong direction
Replies: 23
Views: 27486

Re: Rail Riding drifting wrong direction

Well, I'll have to do it next year as I handed in the car. It's out of my control from now on but I'm glad I was able to get to roll straighter thanks to help on here.
by Yoderby
Fri Feb 05, 2016 1:53 pm
Forum: General Topics
Topic: Rail Riding drifting wrong direction
Replies: 23
Views: 27486

Re: Rail Riding drifting wrong direction

Would that make it worse than if had run straight? If so maybe I should tweak it to see if I can get it to run straight
by Yoderby
Fri Feb 05, 2016 1:22 pm
Forum: General Topics
Topic: Rail Riding drifting wrong direction
Replies: 23
Views: 27486

Re: Rail Riding drifting wrong direction

Well, it turned out I was wrong when I said I rotated the front axle. I thought I did, but today I marked the axle top with a sharpie and realized I never actually rotated it. Once I applied way more strength I rotated it a quarter turn. No good. Then I rotated it another quarter turn so the mark fa...
by Yoderby
Fri Feb 05, 2016 9:57 am
Forum: General Topics
Topic: Rail Riding drifting wrong direction
Replies: 23
Views: 27486

Re: Rail Riding drifting wrong direction

Yes, weigh-in is today. I tried rotating front axle with no change. I'll try again to make sure. If I do need to remove front axle I'm not sure how to adjust it but I'll do a search again. Thanks.
by Yoderby
Fri Feb 05, 2016 8:59 am
Forum: General Topics
Topic: Rail Riding drifting wrong direction
Replies: 23
Views: 27486

Re: Rail Riding drifting wrong direction

I used Pinewood Pro PRO Axle Driller to drill the axle holes with a clamp. I didn't narrow the car 1/16" anywhere nor did I bend any axles. However I think the axles may not be perfectly straight due to my polishing or something. I had to hammer the nails in to the hole such that I don't know i...
by Yoderby
Thu Feb 04, 2016 10:02 pm
Forum: General Topics
Topic: Rail Riding drifting wrong direction
Replies: 23
Views: 27486

Re: Rail Riding drifting wrong direction

Thanks for the ideas, I can't believe I messed up so badly. I tried, but not hard enough.
by Yoderby
Thu Feb 04, 2016 9:23 pm
Forum: General Topics
Topic: Rail Riding drifting wrong direction
Replies: 23
Views: 27486

Rail Riding drifting wrong direction

I have a raised right wheel. When I roll it down a table it's drifting AWAY from the raised wheel rather than towards the raised wheel. I didn't bend any axles and I drilled axle holes. How can I adjust the axles so that it drifts the opposite way or at least straight?
by Yoderby
Thu Feb 04, 2016 5:01 pm
Forum: General Topics
Topic: various questions
Replies: 14
Views: 17193

Re: various questions

This rule was buried in their official rules not the summary doc that they emailed out so I don't think they will care about this anyway especially if it's a minor tweak.

About the spacer, I see that a credit card is the perfect width:
http://www.derbytalk.com/viewtopic.php?t=4427
by Yoderby
Thu Feb 04, 2016 12:32 pm
Forum: General Topics
Topic: various questions
Replies: 14
Views: 17193

Re: various questions

One more thing, can I use old credit card for spacer to hammer the axles?
by Yoderby
Thu Feb 04, 2016 12:31 pm
Forum: General Topics
Topic: various questions
Replies: 14
Views: 17193

Re: various questions

I checked the detailed rules and it says: "Axle nails must be mounted parallel to the track surface. Tilted or canted axles that cause the car to run on the edge of the wheels are not allowed. Wheels must run flat on the track surface. At least three wheels must be in contact with the track sur...
by Yoderby
Wed Feb 03, 2016 6:19 pm
Forum: General Topics
Topic: various questions
Replies: 14
Views: 17193

Re: various questions

I rechecked the rules and I was wrong. It says: "So that the car can clear the track's center guide strip, there must be min .375" underside, and min 1.75" wheel to wheel clearance" "wheels must run flat" It doesn't say that axles can't be bent. So it looks like I canno...
by Yoderby
Wed Feb 03, 2016 2:45 pm
Forum: General Topics
Topic: various questions
Replies: 14
Views: 17193

Re: various questions

I found a rail riding faq here:
http://www.maximum-velocity.com/railridingqa.htm

Since I don't know if there is a center bar or just side dividers I guess I'll just try to make it run straight this time.
by Yoderby
Wed Feb 03, 2016 11:41 am
Forum: General Topics
Topic: various questions
Replies: 14
Views: 17193

Re: various questions

I did a search but don't seem to be able to find that discussion. I would have thought one of those things be necessary. Can you point me to a link to check out?