New JRC Lightining Sprint Chassis

[Mike Jeffery]

I'm planning in having the new chassis done in a week, I still have some Autocad work to fix the questionable areas, look like I won't be getting alot of sleep in the next few days, but that fine as long as my customers are taken car of, after all, I really work for you.
Thanks for your support,
Mike

[MRDmotorsports]

Mike, I am also sending this info to Dustin. Your chassis has the cage straight the whole way down so this should work no problem for you. attached are photos of my nitro sprinter and it is legal for this race. Consider how my nerf bars are and you could fix your problem. Look at the right nerf bar. One like it could be mounted to your rear and front holes along the chassis. Use the holes in your chassis to bolt the nerf bars to. Have the bars extend further in on the chassis and mount the cage to this. Drill a hole and countersink it so the screws dont rub the chassis. I do this on the front of my nerf bars. The center hole maybe you can make a small piece that would do the same thing. That way you can do both sides of the car or just one depending on how off your car is. Its good. I can get better pics for you. To do it you'd just have to trim of some of the cage(the size of the rod used for the nerfbars. Main problem might be the mounting of the steering servo but maybe by mounting that upright instead of flat might work. Just a thought and would save you time and money, just changing the nerf bars instead of new chassis......Jesse

[Mike Jeffery]

Iv'e been in contact w/ dustin all day/ nite about this situation and we are working on it, and any outside info is always very helpful, if you could send some pics. w/ the body off that would be awesome.
Thanks,
Mike

[jeff@vinyltrix]

mike Y G M

[MRDmotorsports]

Mike I updated two new pics. You can see that the cage mounts further in than what the holes on the chassis are. In this case the body moves in 1/4 in further in. This may work for your cars with the right mods.....

[cryslr300m]

Here are some options that I came up with over a month ago, as I was aware some of this was coming down.

As the rules state , we will no longer be able to mount the lexan to the front bumper like an EDM for the Sprinters. Obvioulsy we do not want to cut the hood off behind the front Shock tower as that would be huge disadvantage. We will probably want to run a front wing as an alternative.

The front end photo shows the new shock tower I made which includes the mounts for the front wing. I also incorporated a sway bar, which is a great tool to have.

Since my JRC car has a removable cage I also created some servo mounts which will allow me to mount the servo just over the batteries, which will allow the front end to be narrowed to the 3.6 required width.

Any thoughts...let me know...

Bill

[curtisp]

Mike,

I sent you a pm.

We appreciate what you are doing for your customers! :thumbsup:

[Rcer19]

..

[Allan Webster]

As the rules state , we will no longer be able to mount the lexan to the front bumper like an EDM for the Sprinters. Obvioulsy we do not want to cut the hood off behind the front Shock tower as that would be huge disadvantage. We will probably want to run a front wing as an alternative.


Bill

Where does it say in the rules you can't use an EDM type front lexan? I didn't see that, could have easily have missed it.

[cryslr300m]

Where does it say in the rules you can't use an EDM type front lexan? I didn't see that, could have easily have missed it.


This is the exact line that targets that lexan wing....

No lexan or any other material may be mounted to nerf bars, bumpers, cage, wing or any other part of the car that will trap, alter, or direct air flow for the purpose of gaining an aerodynamic advantage.


(Notice they say bumper)

[Allan Webster]

Well, per the 'scale' comment, I'm going to be showing up with an edm nose piece like I did last year. Many winged and non-winged sprints run a two piece hood, which has the 'hood' and a 'nose' piece. Front lower nose panel with a reflex to improve front down force. Atleast, that is my argument.

http://www.brmotorsports.com/BR_Catalog_PDFs_files/73.pdf

Is even called an outlaw deep dish nose. Heck, might even put a rock guard on my cockpit too?

[cryslr300m]

Well, per the 'scale' comment, I'm going to be showing up with an edm nose piece like I did last year. Many winged and non-winged sprints run a two piece hood, which has the 'hood' and a 'nose' piece. Front lower nose panel with a reflex to improve front down force. Atleast, that is my argument.

http://www.brmotorsports.com/BR_Catalog_PDFs_files/73.pdf

Is even called an outlaw deep dish nose. Heck, might even put a rock guard on my cockpit too?



Why dont you post this in the main discussion and see what kind of responses you get....Im interested as well...

[curtisp]

Why dont you post this in the main discussion and see what kind of responses you get....Im interested as well...

I second that...throw it out there for the others to see. :thumbsup:

[curtisp]

Hey, guess what? We can make our JRC sprints legal without replacing or modifying the chassis. Although the cage might have a slight / \ look to it, it will comply with the rules. I tried it on my car and didn't think that it looked terrible.

Cut the length of the cross tubes at the top of the cage to 3.0" and add a cross tube at the front of the down tubes (where they are cut behind the front shocktower). This will allow the cage to fall within the 3.6" limit. Then, make a new hood.

It might not be the perfect solution, but we will still have room for our electronics to fit nicely on the chassis. And we don't have to buy a new chassis.

Here's what Rob had to say about it on page 17 (post #414) of the rules thread:

Curt,
As I read that I see no problem with what you are saying. As long as the hood, and top of the cage from the back of the halo forward and the down tubes is 3.6" or less, it should be fine. That being said my OPINION would be that it would likely leave the cage looking like this / \ which some may say is unrealistic but if that is all that is needed to allow the wider cars to comply than I see no problem with that at all. :thumbsup:

[Mike Jeffery]

Curtis-
Thanks for the info, if you could post some pics. of you car that would help alot. LMK and thanks for the help/support.
Mike

[curtisp]

Mike,

I'll take pics this afternoon and post them. I haven't made the hood yet, but you'll get the idea.

Glad to help.


Curt

[cryslr300m]

I was surprised to see Rob post that...Im sure you probably were as well.

BIll

[cryslr300m]

I tried what you talked about with the cage / \ , and it still doesnt come in at 3.6 at the main frame rail. THis is the middle rail that runs parallel to the chassis.

In order to make 3.6 at the main frame rail you would have to have a pretty severe slope.

Thoughts?

[curtisp]

Here are some pics of my Lightning. I used the standard mounting location for the cage. I did NOT re-drill the chassis.

[irocz69]

Hey guys. Not sure what cages your using but if u look @ my pics on post 453 & 456 in the Rules Thread u will see there is no problem if a CW cage is used. I know for some it is an added expense, but its a quicker fix than having Mike spend $$$$$$$$$ on new chassis. Mike if this is an issue w/some of our drivers just have them give me a call. Im sure if u or I talk to Rob we can get a good price on cages. Just a thought to help everyone keep cost down. Keith S.

[Allan Webster]

From before, when I said something about EDM from piece. Rob did responde to that and say they are working on exactly what will be allowed. Sounded like a standard edm nose piece WILL be allowed.

al

[jeff@vinyltrix]

Hey guys. Not sure what cages your using but if u look @ my pics on post 453 & 456 in the Rules Thread u will see there is no problem if a CW cage is used..

just about everyone runs the CW cage unless it a klien or dyno tech.

[cnyrcer]

I have a CW cage..and mine is to wide in the stock mounting holes.....

[curtisp]

Here are some more pictures of my JRC Lightning. It's the original chassis, using the stock mounting holes for the cage (I did not re-drill the chassis), and it has a Custom Works cage. I have been working on a few things and so the body isn't looking the best. I will be cutting new body & wing panels and paiting it in the next few weeks.

[04Xterra]

Hey Curt,
Car looks good. Where did you get the headers from?

[jeff@vinyltrix]

Hey Curt,
Car looks good. Where did you get the headers from?


dont mean to bust in but they are from a bigboy toys sprint car that was made
many years ago solid aluminum and brass i have a pair my self very nice touch!!

[BustedGFX]

dont mean to bust in but they are from a bigboy toys sprint car that was made
many years ago solid aluminum and brass i have a pair my self very nice touch!!
However, Barts parts makes them currently and they are $25 per set and can be found at either www.laspeedway.net (http://www.laspeedway.net) or RD Enterprise, I have them on all my cars and love them:thumbsup:

[curtisp]

I got the headers from RD Enterprise (http://www.rdent.com/sprint/sprintparts.html). The ones on my sprint are the non-polished headers. They also sell them polished. :thumbsup: I have a pair of the polished headers on my shelf.

[BustedGFX]

I got the headers from RD Enterprise (http://www.rdent.com/sprint/sprintparts.html). The ones on my sprint are the non-polished headers. They also sell them polished. :thumbsup: I have a pair of the polished headers on my shelf.
a little metal polish will make them bling like chrome, there an awesome addition to any sprint car

[04Xterra]

Good info guys!!!