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Post by ProGrudge Racing on Jan 19, 2011 20:20:43 GMT -7
I know its something im doing wrong but i just cant figure it out. I bought the block this year (finally) because i wanted to run canted wheels on the rear for my sons car. Well they turned out nice except for one thing. When the car rolls forward the wheels go straight to the body and when the car rolls backwards the wheels go straight to the axle head. BUT if i picked the front of the car up about 3/8 to 1/2in off the ground it does the exact opposite. Which from my understanding is what you want the car to do. The only thing i can come up with is to put a slight bend in both axles so i can turn them until the wheels are kinda towed out which should make them run to the head when it rolls forward. Please let me know if im headed in the correct direction b4 i mess up a set of 93s and have to pay a 35 dollar overnight fee to get another set on time!
THANKS, Lost with outta clue
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Post by Blindmule Racing on Jan 19, 2011 20:33:29 GMT -7
don't bend your axles something may have gotten off when you drilled i would drill another block of wood
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PWDDC
PURE STOCK
[Mo0:0]
Posts: 23
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Post by PWDDC on Jan 19, 2011 21:06:55 GMT -7
Congratulations on getting The Block. I struggled for years without it, trying to get things accurate. This is my understanding mixed with some experience canting. There shouldn't be any toeing in or out. The wheel should migrate to the head of the nail due to the canting alone. From your description, you have toe-in on both sides when the car is in a normal position. If one side of the drill press' table was lower, then you would have toe-in on one side and toe-out on the other. Perhaps the block was not totally parallel across the X axis of the press' table; which can also result in some toeing. Put a combination square along the side of your drill table to see how near square your fence is. Excellent advise from Blind Mule and 5 Kids.
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Post by ProGrudge Racing on Jan 19, 2011 21:15:36 GMT -7
I agree i would be the smart thing to redrill i new block if it wasnt already finshed. the car is complete ,weighted,painted,cleared,clipped and buffed so redrilling is not an opption at all. Told you i was retarted! I didnt even think to check b4 i went straight to cutting on the car if everything was the way it was suppose to be
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Post by *5 J's* on Jan 20, 2011 7:05:05 GMT -7
did you drill the front axle holes and the rear axle holes at the same height above the bottom of the car? If you drill the fronts higher in the block - the front will sit lower than the rear which will cause a bit of toe in on negative canted axles.
As to how to correct - make a wax paper shim and shim the axles back a bit. Not ideal but it works.
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Post by W Racing on Jan 20, 2011 8:55:53 GMT -7
Good point!
I also wonder if the DFW has negative cant which would also raise the nose...
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Post by ProGrudge Racing on Jan 20, 2011 17:16:05 GMT -7
I think L.A.s idea may work the best for my app. bcuz weight is SO close to my axle holes id hate for it to hit a sap ring or the puck it self and tear it all up. 5 kids- what kinda wood dowels do you use or does it matter? L.A.- do you think that the little ill be able to drop the hole it will make a difference?
If i do redriill the hole in the front and it helps but doesnt get it all should i shim the back axles or not? If so what should i use? but i still think just a VERY small kink in the axles and turn the bend towards the back of the car should make them run out. But will it try to slow the car down bcuz of the lil bind that maybe on them. Thanks for all yalls help ;D
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Post by Blindmule Racing on Jan 20, 2011 19:40:20 GMT -7
I have never got a car to preform well with bent rear axles JUST MY
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Post by W Racing on Jan 20, 2011 22:45:47 GMT -7
I think L.A.s idea may work the best for my app. bcuz weight is SO close to my axle holes id hate for it to hit a sap ring or the puck it self and tear it all up. 5 kids- what kinda wood dowels do you use or does it matter? L.A.- do you think that the little ill be able to drop the hole it will make a difference? If i do redriill the hole in the front and it helps but doesnt get it all should i shim the back axles or not? If so what should i use? but i still think just a VERY small kink in the axles and turn the bend towards the back of the car should make them run out. But will it try to slow the car down bcuz of the lil bind that maybe on them. Thanks for all yalls help ;D Bending axles is a quick and dirty way to get toe out instead of toe in.... However not an aproach I would take unless it was for a cub scout and there was extreme time pressure... You can lift the car with your finger and see at what hight lowering the hole would cause toe-out
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Post by ProGrudge Racing on Jan 21, 2011 5:45:22 GMT -7
Just in all honesty how many numbers are we talking its gonna slow the car down with it riding on the body most of the time vs the axle head. Both are friction regaurdless the way you look at but one is better to ride on than the other. If its gonna take the car from 2.97s (which is average time my sons car went last year) to 2.99s then it will probly be worth it bcuz this will be our last year in scouts and weve been undefeated in our pack and at districts the last 3yrs so everyone is out to get us. Theirs only about 12 out of the 87 in our pack race that care about racing but one kid was only about 2 cars behind us last year and thats a lil to close for comfort for us. So in yalls opinion what would you do? It sucks that i dont have a track to try it on.
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Post by W Racing on Jan 21, 2011 6:09:28 GMT -7
Just in all honesty how many numbers are we talking its gonna slow the car down with it riding on the body most of the time vs the axle head. Both are friction regaurdless the way you look at but one is better to ride on than the other. If its gonna take the car from 2.97s (which is average time my sons car went last year) to 2.99s then it will probly be worth it bcuz this will be our last year in scouts and weve been undefeated in our pack and at districts the last 3yrs so everyone is out to get us. Theirs only about 12 out of the 87 in our pack race that care about racing but one kid was only about 2 cars behind us last year and thats a lil to close for comfort for us. So in yalls opinion what would you do? It sucks that i dont have a track to try it on. It would be like driving down the road with your brakes on.... How many days left? It sounds good to start over if possible...
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Post by W Racing on Jan 21, 2011 7:04:58 GMT -7
We have a cub scout car on the shelf. together we spent about 40 hours on that car getting it painted and just so....
One of the wheels would not align. We turned around and built a new car in 6 hours and it got the job done...
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Post by ProGrudge Racing on Jan 21, 2011 11:30:41 GMT -7
I will just have to do it then. only thing iam worried about is paint time cuz ive got alot of steps to redo cuz its 7 different colors and cure time for the clear unless i try and bake it on. Has anyone tryd to do that with a derby car?
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Post by psycaz on Jan 21, 2011 12:30:57 GMT -7
Post the rules you have to follow. Maybe there is something in there that can be worked with to help fix the problem.
Are you wheel base restricted?
Front to back distance? Distance from back? Slots?
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Post by ProGrudge Racing on Jan 21, 2011 22:08:04 GMT -7
Ok guys the fat lady has officialy sung!!! my sons car is junk. I set our track up for another packs race tonight and convinced everybody thatd id be awhile leveling and polishing it out so i could get a few test runs in while nobody was around. Our track is a 4 lane 42ft best track with fast track finish line. We set our hill up a lil more aggresive than PDDR does i think cuz the times for the quality of car is a lil faster than they should be. First pass outta the gate no lube and light at only 4.52 it went a 3.012. Second past with a lil lube but still light it went a 2.983.Third past i put in the T putty and it went 2.951. Forth past packed a lil more lube in it and it went 2.9430. Now the fifth thru tenth passes no matter what i did on either lane she wouldnt get under a 2.9740. So i have come to the conclusion that im just gonna have to bite the bullet and leave it to Glenn and John! The Rotten Banana will be shipped out over night first thing tomorrow moring to arrive monday morning in utah. Graced by the HANDS OF GINIUSES and rolling like its supposed to be by late tuesday. Back in a over night box wensday morning so it can make its race by Saturday morning the 29th! Thats the best and only tru way i see that its gonna be done right even if its gonna cost me another $100 its worth it to me and my son! ;D
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