New record MT GPS run and Video again, record 80.4mph

[jzemaxx]

Yeah I have been thinking about a front wing,but I don't know if its legal for WFRCCC runs or not?? Anybody know....????

[lutach]

Originally Posted by jzemaxx

Yeah I have been thinking about a front wing,but I don't know if its legal for WFRCCC runs or not?? Anybody know....????

It is legal. Actually the only rule change made is for the trucks.

[jzemaxx]

Originally Posted by lutach

It is legal. Actually the only rule change made is for the trucks.

So they made a rule change allowing wings on trucks??

[lutach]

Originally Posted by jzemaxx

So they made a rule change allowing wings on trucks??

The only rule that was actually set was for the max size of the vehicle and I hope they change that, because 1/4 scale can't compete. The only new rule is for the trucks as the tires have to be outside the body and they put a minimum height and width on them. Anything else goes as far as I know. Any aerodynamics that will help you go faster can be done. You can even add 4 motors to your truck to help . So add a wing to that bad boy and let it rip. I have to see that monster go over 100mph.

look into under trays. Simple sheet metal work but if done right, you can reduce drag under the chassis and if REALLY done right, you can create a low pressure vacuum and actually get the car to stick to the ground. Thats one way a lot of race cars deal with elevation change and actually increases yaw stability. I think itll be worth someone looking into. I dont go over 50 so i dont really have interest in it...only for the real race cars/ gokart on roids

[jzemaxx]

Originally Posted by Andrew32

look into under trays. Simple sheet metal work but if done right, you can reduce drag under the chassis and if REALLY done right, you can create a low pressure vacuum and actually get the car to stick to the ground. Thats one way a lot of race cars deal with elevation change and actually increases yaw stability. I think itll be worth someone looking into. I dont go over 50 so i dont really have interest in it...only for the real race cars/ gokart on roids

Main thing I have found is, get a wing on the nose. Mine tends to lift off quite a bit.

[jzemaxx]

Hmm, I'll check on making a wing then.

[lutach]

Originally Posted by jzemaxx

Hmm, I'll check on making a wing then.

Make it Indy car style. Make it adjustable so you can mess with downforce.

[jzemaxx]

Here is the video of the run.....enjoy.

http://www.youtube.com/watch?v=ERY9_TLF86M&feature=user

[lutach]

Originally Posted by jzemaxx

Here is the video of the run.....enjoy.

http://www.youtube.com/watch?v=ERY9_TLF86M&feature=user

Awesome.

[jzemaxx]

Problem is everytime we have been out there the past 2 times the crosswind has been VERY high. Probably 15-20mph......and it pushes the truck to one direction badly. I hope to nail down a clean run once the winds calm down further this summer. Hope to hit 84-85mph or so with the same combo....if not more with the next motor.

[lutach]

Originally Posted by jzemaxx

Problem is everytime we have been out there the past 2 times the crosswind has been VERY high. Probably 15-20mph......and it pushes the truck to one direction badly. I hope to nail down a clean run once the winds calm down further this summer. Hope to hit 84-85mph or so with the same combo....if not more with the next motor.

One question, did you buy that 40.160H that was in Ebay? If so, get a bigger pinion and let it rip. The 40.160 has been capable of putting out 300A. With 12S and a bigger pinion, I can see 100mph after a wing is added to keep the front end down.

[jzemaxx]

Originally Posted by lutach

One question, did you buy that 40.160H that was in Ebay? If so, get a bigger pinion and let it rip. The 40.160 has been capable of putting out 300A. With 12S and a bigger pinion, I can see 100mph after a wing is added to keep the front end down.

Unfortunately I didn't.....still running the HV Sent. I don't know if 100mph is possible, but I may end up trying. I want to finish my fast buggy...but I haven't had the time. Also I need more motor......that 1521 is putting out about all it can do.

[rhylsadar]

i honestly have to admit that if one watches the video it doesn't seem to go even close to 80mph. so that must be very misleading from just watching the vid. how accurate are such gps measurments? don't get me wrong. if you say that thing goes 80mph it may be so. it just doesn't look like on such a video.

just for a comparison here is very old video of mine with a bl mp7.5, at 1.10 e.g. there is a pass by that seems not so slow just from watching it. and that buggy not even reached 50mph back then. http://www.youtube.com/watch?v=FgJpHjMqqbM

whatever. its not that i cared much but i was just a little surprised from watching the vid.

bye
rhylsadar

[lutach]

Originally Posted by rhylsadar

i honestly have to admit that if one watches the video it doesn't seem to go even close to 80mph. so that must be very misleading from just watching the vid. how accurate are such gps measurments? don't get me wrong. if you say that thing goes 80mph it may be so. it just doesn't look like on such a video.

just for a comparison here is very old video of mine with a bl mp7.5, at 1.10 e.g. there is a pass by that seems not so slow just from watching it. and that buggy not even reached 50mph back then. http://www.youtube.com/watch?v=FgJpHjMqqbM

whatever. its not that i cared much but i was just a little surprised from watching the vid.

bye
rhylsadar

It sometimes depends on the frame rate of the video, it might make a vehicle look slower. From what I've been told the GPS (If you do get a reading) are sometimes more accurate then the radar guns available to the public. I've also noticed that if the camera is still, the vehicles being video taped seems faster, but when the camera follows the vehicle it seems slower.