Bend or drill cant fdw ???

[Rocket car]

Bending or drilling
What is the difference between drilling 3 degrees and bending 2 degrees or just bend 5 degrees. Wouldn't it be easier to tune. Dd4hire says it slower I don't understand why. The point where it touches the body is at the same angle.

 

[Quicktimederby]

I have tried a Frt positive drilled cant one time on a eliminator car. For what ever reason it was faster with a straight drill and more bend. Why I have no idea. The difference wasn't much but in a class were every .00x counts the straight got me the best results. A lot of times with these cars what makes sense doesn't work the things that you would think would have no chance of working do. That is the joy of the hobby trying to find that one extra thing that should'nt work but does.

 

[Rocket car]

Thx
Back to the drill press

 

[DerbyDad4Hire]

To me it seems like it is a double angle. My brain only functions on an intermittent basis so I might be wrong. It gives a weird, contact point and makes it harder to tune. Imho

 

[W racing]

Do you sell a pre-drilled block where the DFW is drilled at an angle? No bend needed for the DFW axle? Is that the PNP option? Just curious. I sometimes wonder if it would work to not bend the DFW but drill the hole at an angle both for cant and steer.

 

[DerbyDad4Hire]

Yep that is what it is and it works very well.

 

[W racing]

That is very cool.

 

[Rocket car]

So if you take a axle bent at 5 degrees and you rotate it forward for steer isn't that a double angle too??? The answer is yes...
Remember the point at which the wheel touches the body is round so it can only make contact in one spot.

Things that make you go hmm???

With the axle hole drilled at 3 degrees and axle bent 2 degrees you have 5 total degrees when the axle is pointed straight down . Then as you rotate it forward 90 degrees it will still have 3degrees of positive cant.

With a bent axle at 3 degrees and the axle hole drilled straight , as you rotate it 90 degrees you have no cant at all, correct.

 

[DerbyDad4Hire]

I "cant" say for sure.

I will have to let you experience this one for yourself.

 

[ljo]

Im not saying you couldn't build a fast car this way, but you would need to have your steering angles figured out. I feel that with a straight drill and bent axle you have more adjustability than you would with an angled drill along with a bent axle. Think about it. With a straight drill and bend you can turn the axle 360 degrees achieving postive cant and even negative cant and varying degree of toe angles. If you drill angled with a bent nail you will end up with what dd4h is talkin
g about, "fighting angles".

 

[W racing]

My Awana Blue car was set up this way. It can be done. If you have a track and/or build and enter multiple cars you can experiment. However if this is a scout car with no track then the conventional way is best and/or have DD4H drill you a block with steer dialed in all ready.

 

[Rocket car]

I've also read on this forum guys bending their axles 5 plus degrees if you bend it this much how does it go through the wheel??? Or do they drill cant and then bend for a total of 5 degrees??? Hmm

 

[W racing]

Just a bend on the axle. It will go through...

 

[Quicktimederby]

What works best for me is the most bend in the axle that the inner hub will allow. Which means at times I have to bend the axle several times to get it right. The axle bending tool is awesome for this!

I've also read on this forum guys bending there axles 5 plus degrees if you bend it this much how does it go through the wheel??? Or do they drill cant and then bend for a total of 5 degrees??? Hmm

 

[Rocket car]

I'm just trying to build the fastest car with out scratching the inner hub. I don't have one of goat boys axle bending tools . I guess I will just bend it by tapping on the groove and try putting it through other wheels first for a test fit and pray I don't scratch my good wheel. On my other post Steer in scout car.. I'm try to do better than a 3.10 does this set up work with that kind of steer 4" over 4'.

 

[DerbyDad4Hire]

I think you are over thinking this one. The angle of bend is not going to make much of a difference. Just give a good bend that fits through the wheel bore and you will be fine. I have NEVER measured a bend and i am sure before the bending tool almost every bend was different and the cars were still about the same. To build a fast car just keep it simple and don't overdo the steps. Keep your drift around 3" over 4" with a 2.5" lift on your tuning board.

 

[Rocket car]

Thx for all the help !!!
I Just want to beat last years car, it was a disaster. It still ran first, barely, because of bad info about steer last year. I only had 1 1/2 over 6 ft and wiggled really bad. Bad aerodynamics and wiggles ran 3.14 best need to crush this year!!! The axles and wheels I bought from dd4h look better than last years( from competitor ) That is before I knew about these forums.

Last year for this, My wife thinks I'm nuts!! This has turn into an obsession. Thanks for all the info!!! Any more questions trust me I will ask. Thx. Rocket car

 

[W racing]

Post some pics of the car and or describe it... The rears and weighting of the car, along with polish etc are important details to not over look...

 

[Rocket car]

Axles are pro 92 s BSA bought a kit last year with 400 600 1000 1500 2000 2500 and 3000 grit sand paper then 1 micron polishing paper then 2 micron polishing paper is that good enough or do I go farther ???

But started with1000 grit first all done on drill press 10 secs for sand paper 30 secs for polishing.

Will polish wheel bore and axle ,then burnish both with graphite , per rules. Any more???

 

[cygnus]

I've also read on this forum guys bending their axles 5 plus degrees if you bend it this much how does it go through the wheel??? Or do they drill cant and then bend for a total of 5 degrees??? Hmm

If using .091, .092, or .093 axles, a 7.5 degree bend is about the maximum that will fit through the wheel and not scratch the bore. Keep it 7 degrees or less and you will be fine.