T-Rex Racing
PURE STOCK
T-Rex doesn't wanna be fed, it wants to hunt!!! [Mo0:4]
Posts: 19
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Post by T-Rex Racing on Jan 25, 2011 1:53:15 GMT -7
Our pack rules are that all fours have to touch with a roll test at inspection. I had read one of the previous threads (and isn't it amazing how you can read them until you go blind because you're learning so much) that it would be preferable to cant the rear wheels and put a little steer into one of the fronts even though you were making a straight roller. If I'm not mistaken I think it was Glenn's good advice. I understand how to find the dfw but still think I could use some help.
I don't have a test track, so what would be a preferable amount of movement on a 4' tuning board? Should I even try to put any steer into the front and make a rail-rider?
Thanks again for all the help guys!!!
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Post by W Racing on Jan 25, 2011 7:40:10 GMT -7
Glenn's table is 8 feet....
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T-Rex Racing
PURE STOCK
T-Rex doesn't wanna be fed, it wants to hunt!!! [Mo0:4]
Posts: 19
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Post by T-Rex Racing on Jan 25, 2011 20:01:30 GMT -7
Hey thanks 5 Kids and Eric you too. So I need to tune it to 8" in 8' correct?! I am making a tuning table but it will probably be more of a 4 footer...how would that translate? I hope I'm not sounding dumb, just figure there is some advice.
Thanks again guys.
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Post by W Racing on Jan 25, 2011 23:25:01 GMT -7
For a four foot board total length. Car DFW set at 7" mark on board
8" in 8 feet is:
1 5/8"
6.5" in 8 feet is:
1 5/16"
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tepco
PDDR Forum Member
[Mo0:0]
Posts: 4
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Post by tepco on Feb 22, 2011 21:01:50 GMT -7
What about the non dfw axle, straight or cant?
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tepco
PDDR Forum Member
[Mo0:0]
Posts: 4
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Post by tepco on Jan 16, 2012 20:21:47 GMT -7
What about the non dfw axle, straight or cant? Well I know this is an Old post but I never got an answer and now find myself helping my son build a car in his new troop with rules "all for wheels must fully touch the floor". So my question is the same, should the front non dominant wheel be slightly canted or straight. And I assume the rest of the car is built like a 3 wheeler? I'm quoting myself so I don't feel that bad resurrecting such an old thread ;D
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Post by Wood Butcher Racing on Jan 17, 2012 5:20:59 GMT -7
I just don't understand the rule. Have the leaders not seen these boys use a hammer or a saw? I have 15 Wolves in my den and none of them can use a hand saw ... and they expect all 4 wheels to precisely touch the ground? This idea of "fairness" is a hoax. The rule committee that wants "all four touching" is trying to eliminate the fastest car (to give theirs a chance to win) instead of doing their best. I'm suprised they don't have the "axles must be flat" rule. Oh, wait ... that will come next year. THERE ! I SAID IT ! It's out there now and they will just have to deal with it.
Now, Tepco. For your question, the FDW will naturally be canted due to bending the axle in order to add steer (unless you add steer by drilling the axle hole for it). This bent axle will raise your car slightly so the NDFW may not pass their roll test. I suppose it would depend on how much you bend the axle. If you're not crazy with the COM you don't need a whole lot of steer. That might work for you too. You'll have to experiment with it.
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tepco
PDDR Forum Member
[Mo0:0]
Posts: 4
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Post by tepco on Feb 15, 2012 20:44:10 GMT -7
Thanks, we moved troops this year and were able to use a 3 wheel rail runner. I think the all 4 wheel touching rule is silly for the same reasons you stated.. Anyway we won and are on our way to district. We had to use the slots in the block but got it to work. I think the district rules say all 4 must touch so we will be building a new car, here we go again . When I get the rules Ill post. I think Ill drill then cut slots...these stock slots are crazy crooked!! Have to search again on how high to drill them and the cant angle. I don't have "the block" but do have a drill press..
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Post by morourke on Nov 4, 2012 15:29:48 GMT -7
In the past, my son and I have never done rail riding because our rules were strict about four wheels touching. Can 4 wheels work effectively with a rail riding technique? The Pack does allow for the extended wheel base and we have always used it with 2nd and 3rd place pack finishes. Would a shorter wheel base be quicker with steer? I was thinking of putting the back wheel at the end and leaving one wheel distance in the front of the car. Would this wheelbase using rail riding technique be quicker? Thanks!
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Post by rocket21 on Mar 13, 2013 10:47:04 GMT -7
Here is what i have done in the past that made a fast car. Move your wheel base back and drill new holes for the car. Drill the rears canted with the BLOCK and then bend the DFW axle to drift to the rail. The NDFW axle, I bent it just slightly to help the DFW steer. Got some pretty fast times from this. If you can cant that DFW that will help lift up the NDFW a little and yield more speed. Just push the rules to the limit and see what you can do. Good Luck!
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Post by 2FAST4U on Dec 29, 2013 18:14:23 GMT -7
Hey if you want to go fast and have to have 4 wheels touching I have some new ways to speed up your cars and turn them into fast rail runners...
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