Sierra cosworth lightning rod budget build

[Group4_Mark2]

Re: Sierra cosworth lightning rod budget build

Considering all you have done in such as short time, that jobs left for the final day should be no problem to you...

124Kg is a huge weight saving. Should definitely be worth some time on the track. Will be looking forward to the 28th to see how you get on.


Tom

[exboyracer]

Re: Sierra cosworth lightning rod budget build

124kg! Fook me that's massive!

Good luck with the next event

[madragon199]

Re: Sierra cosworth lightning rod budget build

I was a bit surprised myself... my old cage was built using 43mm x 3.5 mm weighed a ton!!!!

I calculate im 10% lighter...... Does that mean i can go 10% faster...!!!!!???????

Looking forward to next race...cheers

[RWD fords rule]

Re: Sierra cosworth lightning rod budget build

124kg! that is more or less the weight of your pinto engine!

Good to see something defferent on here, I am a fan of cheap and cheerful racing, when it gets too expensive the fun stops, give it some stick at the next event

[Pushrod King]

Re: Sierra cosworth lightning rod budget build

Is there a minimum weight for lightning rods?

[Pushrod King]

Re: Sierra cosworth lightning rod budget build

Is there a minimum weight for lightning rods?

Just checked the ORCI rules and yep there is : 845kgs..... You may find that the car's now underweight!

Also Sierra shells are reknowned for flexing, you may find that the car was stiffer before you removed the cage and replaced it with less bars!

[madragon199]

Re: Sierra cosworth lightning rod budget build

YES minimum weight is 845kgs.... According to my bathroom scales im still in the 900+kg.....
The new cage is a 6 point weld.. and its also fixed to the body in about 12 other points...my door panels are welded in place.. and the rear hatch is welded in place.........Fingers crossed..

I Jacked up the rear of the car on the wheel rear suspension point and i can still get both rear and 1 front of the ground.......


I think its a compromise between weight and strength.....

They also changed the rules i used to run my lower door bar along the sill welded to it ...but this no longer counts as a door bar...

[madragon199]

Re: Sierra cosworth lightning rod budget build

Well after 7 years this is back in my life...to be honest it never went any where...i sold it 5 times got paid 5 times and no one ever came and collected it...i think the dream becomes a reality.then you relise you have to build it, store it, mend it and afford to race it and then tell the wife....

So i stripped the dead engine out and measured the front lower suspension points...and as expected they were 50mm out on the lower fixings...(its had a hard life)

i plan to get it straight and then fit the new engine im building(bv variable stack shed build ) and get it to the rolling road) then put another engine and race it next year (march)....lol...

So we take a measurement from one point to another point...the same on both sides...and the measurement should be the same...i dont care if its wrong ,,i just want them the same....

One side



other side



As you can see they are well out so the front end is bent...the top mounts are protected by a brace so they havnt moved ..just the chassis legs and the cross member...if they had moved the opposite way i would have left them because racing oval it would give me more camber...

but its the wrong way so makes the car handle shit..(and i thought it was my driving...blame the tools syndrome)

so using all the wrong equipment...i starrted to push one leg...and also to pull the other leg(using a brace instead of the cross member)



Its about equal now...but im going to go to far and gain a bit more camber by offsetting the crossmember in relation to the top mounts...

cheers mark

[Group4_Mark2]

Re: Sierra cosworth lightning rod budget build

great to hear you are back working on the Sierra. It has been quite a while since I think it spun a bearing on the oval

[madragon199]

Re: Sierra cosworth lightning rod budget build

great to hear you are back working on the Sierra. It has been quite a while since I think it spun a bearing on the oval

Hi tom...good to here from you...

yea time just flies......how long ago did i send you half the head...scary hey....

hope to be out next year before im forced to retire...lol...
what you up to now days...
cheers mark