Hi,

Trying to decide which roll bar/cage to use on my Locoblade.

Car wil be road/track day with mostly only me in it.

Full cage like the MK one?

Slanted Dax type bar with petty bar?

Standard hoop with back stays and petty bar?

Trying to keep it sub £300.

It will be welded in place.

Cheers,

Pat...

id never consider a slanted one, bloody rude to any potential passangers!

IMHO, best that you can afford, and exclude it from you weight saving plans. My current one is absolutely worthless, its about 3 inches below my helmet top anyway and is unbraced, in the wrong material My plan is to visit mr norden one day

MSA spec, double backbrace and diagonal

Ray

yep mk one like mine, looks good IMHO and meets MSA standards. If I start to race then I will also be fitting side impact bars

quote:

---

Originally posted by shortie
yep mk one like mine, looks good IMHO and meets MSA standards. If I start to race then I will also be fitting side impact bars

---

Can some post a pic or link to the MK cage? I am in the planning stages of my own roll cage build and the MK site doesn't have much in the way of car pictures.

Edit - note how my head is taller than my current roll bar in the avatar.

[Edited on 3/11/05 by Grintch]

Pic (knicked from Shorties photo archive).

Pat...
Rescued attachment mkcage2.jpg

Full cage gets my vote

Ride height a tad beggared though

Wheels are a bit small as well.

Thats mine.. Cost was under $200USD.
I bought the bender which addes $400 but I intend to sell it now.

I was thinking full cage but didnt like the way they looked.

Steering wheel is on the wrong side :-)

quote:

---

Originally posted by want2race

---

Looks like it might be quite difficult to get either in or out of that Rorty. Quite like it though.

quote:

---

Originally posted by want2race

I was thinking full cage but didnt like the way they looked.

---

I think the ride height and small wheels pun was aimed at the pic I posted of the chassis and trolley.

Pat...

quote:

---

Originally posted by Hellfire
Looks like it might be quite difficult to get either in or out of that Rorty. Quite like it though.

---

quote:

---

Originally posted by Grintch

quote:

---

Originally posted by want2race

I was thinking full cage but didnt like the way they looked.

---

I am with you (Johnathan?), I don't think a full cage looks right on a open car.

Assuming some of the other comments were directed at my car:

Ride height - It is a bit high, a reworked exhaust (it is ground flat now from occational contact with the ground) and a skid plate will get it down for next year. However, most of my local Autocross sites have fairly rough pavement, so I can't get it as low as a track only car.

Small wheels - Race tire selection in the US for a lightweight car (Formula/Sport Racer type) pretty much dictates a 13" wheel size. Sedan/Production style race tires never get up to a good operating temperatue.

---

quote:

---

Originally posted by Avoneer
I think the ride height and small wheels pun was aimed at the pic I posted of the chassis and trolley.

Pat...

---

Head above roll bar isn't too clever though

quote:

---

Originally posted by Grintch

quote:

---

Originally posted by Avoneer
I think the ride height and small wheels pun was aimed at the pic I posted of the chassis and trolley.

Pat...

---

Yes that would be funnier.

W2R - how much does a set of those AMLS tires run, $2000? Even if you get the matching 600hp engine (which I remember you were considering), I would think it would be hard to get them up to temperature due to a lack of downforce. I would think that 12 - 14" wide Formula Atlantic tires would be as wild as you can get on a 7. Are you planning on running NASA Kit Car Challenge or SCCA Super Production?

---

Back to the original question and my solution:

Pic isn't too clever, but it will look nice once Powder coated:

Pat...
Rescued attachment Cage.JPG

Wow Pat - the lightweight has probably just been blown out of the window, but that looks like it should provide good protection (and probably some rigidity) so has to be worthwhile.

91ks as it is.

Could probably loose 10kg off the chassis if I adapted a few bits, but I'm happy with the extra bars in the tranny tunnel and the extra bracing here and there.

Pat...

What size is the roll bar/cage tubing?

45mm OD.

Not sure of the wall thickness though.

Pat...