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Post by Paul (madeye) on Sept 13, 2012 7:34:57 GMT
i like it..lol
not a rivet or permenant fixing in my motor mate, able to fully strip fo winter fettle.
just got the sheet of ally for the floor, and debated (because its so smooth) to lay carbon on it as there is a 5m roll in the unit and resin.. hmm
then sell the ally.
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Post by Paul (madeye) on Sept 13, 2012 22:46:22 GMT
Well that was a boring job, floor is cut, borrowed a nibbler which made life easy. All holes measured out and drilled @ 3.2mm and tapped with a 4mm bit. Monotonous is not the word. But its done now. Just to belt sand the edge now to get the imperfections out. some complex tooling..  but it did the job,  must have been boozing taking these.. camers didnt like the glare  after measuring all the holes out, pre drilling  i think the single sheet floor was a better idea, a few more quids but a nice finish, nice and flat with no joints. these are normally the first images posted, am i doing something wrong??    |
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Post by Deleted on Sept 14, 2012 6:49:44 GMT
If you've got any aluminium left, cut a section for the underside of the engine now, before you turn it over. Drill and tap like before around the edge.
Just screw the bolts into the chassis without the cover/plate until after the car is built. It'll make life easier. Looking at the clearance with the engine in on mine, there's a good bit of room;)
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Post by Paul (madeye) on Sept 14, 2012 6:53:26 GMT
i was leaving that for cooling, you recon it wants to be complete? i suppose it will cost nothing to prep now.
plus i was debating on a diffuser at some point.
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Post by Deleted on Sept 14, 2012 9:38:48 GMT
Having done work on Nobles etc, they all have totally flat and complete undersides. This is one of my own build rules!  totally flat, dome head bolts only. (sad) The air should pass nicely underneath the car, and hopefully reduce dirt onto the engine. It should cause less turbulence. The addition of a rear diffuser will be a finishing touch. I have one designed that should be IVA friendly also;) it will also serve as an exhaust shield. |
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Post by kiwicanfly on Sept 14, 2012 10:55:37 GMT
these are normally the first images posted, am i doing something wrong?? I was thinking Paul, some people have built whole cars in ten pages - you've only just got the floor on. Gonna be a big diary |
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Post by Paul (madeye) on Sept 14, 2012 16:57:33 GMT
totally flat, dome head bolts only. The air should pass nicely underneath the car, and hopefully reduce dirt onto the engine. It should cause less turbulence. The addition of a rear diffuser will be a finishing touch. I have one designed that should be IVA friendly also;) it will also serve as an exhaust shield. well pm me or email me diffuser info if your moulding one, might half the cost. im looking at a F1 front wing, instead of the rtr one i have now. will be a bit pricey but worth it. something like this. www.racecarsdirect.com/listing/44071/dallara398_399_301_30_20_4_front_wing.html |
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Post by mabbs on Sept 14, 2012 20:07:49 GMT
Hi Paul,
Would recommend you go for a total flat bottomed floor as this will reduce the air pressure under the car and increase downforce. Tests has also been done (by Motorhead and others) which have proven also that if you close off the floor under the radiator the air is directed through the rad rather than by-passing it and taking it's easiest route out past and under the floor which helps engine cooling massively
I have a tool for a rear diffuser (on my build thread) and the parts from the tool can be trimmed to suit the skirt heights - the taller the skirts the better, but you have to consider speed bumps !!! This will also increase the down force at the rear end as more air can travel through this diffused area increasing air pressure further. I had this made by the guy who also made my front an rear wings which are forms from the Mosler GT race cars.
He also make the Ariel Atom V8 front a rear wings but they are next to useless for downforce and are really just cosmetic - not what you would expect from a £150K car !!
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Post by Deleted on Sept 14, 2012 21:03:22 GMT
totally flat, dome head bolts only. The air should pass nicely underneath the car, and hopefully reduce dirt onto the engine. It should cause less turbulence. The addition of a rear diffuser will be a finishing touch. I have one designed that should be IVA friendly also;) it will also serve as an exhaust shield. well pm me or email me diffuser info if your moulding one, might half the cost. im looking at a F1 front wing, instead of the rtr one i have now. will be a bit pricey but worth it. something like this. www.racecarsdirect.com/listing/44071/dallara398_399_301_30_20_4_front_wing.htmlI'm drooling at that front wing.. |
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Post by Paul (madeye) on Sept 15, 2012 6:50:20 GMT
I'm drooling at that front wing.. sexy innit, i had seen mabbs's and liked the dimensions, i have the rtr one but im not too sure on it now. i saw the dallara one and thought i need some of that in my life... after posting i phoned the guy, and was nearly sick when i heard the price. seen your diffuser jon, did thar mount to a flat floor? or did you remove the floor and just leave the cavity?? does that make sense? |
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Post by mabbs on Sept 15, 2012 7:16:00 GMT
I'm drooling at that front wing.. sexy innit, i had seen mabbs's and liked the dimensions, i have the rtr one but im not too sure on it now. i saw the dallara one and thought i need some of that in my life... after posting i phoned the guy, and was nearly sick when i heard the price. seen your diffuser jon, did thar mount to a flat floor? or did you remove the floor and just leave the cavity?? does that make sense? My floor is split into three sections - front, middle and rear. The front and rear diffuser are riv-nutted on so I can remove them and the centre is pop riveted on, each directtly to the underneath of the chassis. They but-up to each other at the cross member points. To stop the air gaps at the joints I ran some elephant tape accross the panel joins under the car - if it good enough for F1 it's good enoigh for me !! |
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Post by pauljones915 on Sept 15, 2012 16:51:21 GMT
Now your talking Mate, Flat bottoms increase the apparent air flow (velocity) over a given moving platform. ie if your doing 70mph (legal limit your honour) the air flow under neath will be higher. The air will allways want to take the easy option,unlike us it doesnt like to work. By the use of NACA ducts and guiding strips we can make it work for us. Consider such cars that used groud effects and got banned outright, Alfa Romeo fan can, De tomaso Pantera ect and the uses can be clear even on a road car. The limitations of course are generaly going to be where all your major assembleys are.You will have to work round these and find the best comprimise. By using wings you are adding frontal area,this will ALLWAYS increase drag and change the coeficient of drag number. What you have to consider is both sides of the arguement. Drag will increase the required fuel consumption to maintain a velocity.however if that isnt a concern the flip side is potential more downforce and grip.This in itself will change how your suspension loads up and the increased relitive pressure on the tyres.
I could go on and probably have too much allready,soill see you for a brewand we can have a chat.
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Post by Paul (madeye) on Sept 17, 2012 16:14:43 GMT
Looking niiiice! I think the lines are definitely improved both from front and side. Will the roll bar rear support follow the general angle or the contour of your scoop? I like the way you're using the Rocket as a base for your own creativity and ideas a little more outside the box than standard. With all the gadgets you have collected, things will be interesting to the finish line. Keep it up! /Tobias i have a load of the STD kit left if you need any for your build mate.. paul |
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Post by Paul (madeye) on Sept 18, 2012 18:18:18 GMT
after the issues i had with the RD uprights not fitting the ford bells for the discs and for the Hispec calipers with 120mm centres and the mounts having 129mm centres, i popped down the machine shop to see how my ideas were going on. its a good job i had these made as Robert never got back to me about the damaged ones i was sold.. bells ally filled and ready to go onto the lathe to be machined correctly to suit the RD tat.  next was the radial caliper mounts, im a bit bitter about these as i bought them and they were marked, even though im not using them. Anyway, after trying to work out how i was going to make something correct to solidly mount the BIG brakes, these were comissioned.. ;D  all happy about them.. they will be done by friday.. paul |
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Post by 2beers on Sept 19, 2012 21:37:39 GMT
I see your engine specs have been updated, impressive stuff! You will need sticky tires ;-)
Cheers
/Tobias
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totally flat, dome head bolts only. (sad)
