|
|
|
|
|
|
I cannot even start to add more bowdowns and amazement on here.
BUT......
Imagine if you And JohnnyBravo were to get together, along with a few of the other real engineers on here........
Your thinking and work it truely amazing.
I could at this moment happily nominate you for "Latecommer Thread of the Year"
Please do continue to share and educate.
PS: Welcome.
|
| |
|
|
|
|
|
|
|
|
|
Thank you Grizz...  |
| |
|
|
|
|
|
|
|
BUT...... Imagine if you And JohnnyBravo were to get together, along with a few of the other real engineers on here........ Please do continue to share and educate. Bloody hell yes. What an outcome that could have. Think we need ditchdigger along as well, he knows a thing or two about sharp little Fiats! |
| |
Last Edit: Dec 15, 2016 7:30:33 GMT by georgeb
|
|
|
|
|
Dec 15, 2016 11:41:27 GMT
|
|
i love the engineering that is going into this!
p.s de-dion axles are pure filth !
|
| |
|
|
|
|
|
Dec 15, 2016 19:35:29 GMT
|
Thanks About the DeDion... I know they have some drawbacks. But The advantages are, that the camber doesn't change. Ever. Since I plan to put a lot of downforce on the car, that is a big one... Because of its shape, I'll be able to put a diffuser on the back that starts just behind the seat. And I've built a racecar with a DeDion before, so I'd like to use what I've learned from that one and improve on it. |
| |
|
|
|
|
|
Dec 15, 2016 19:40:50 GMT
|
Here is a pic of that car. Based on a Lola sports 2000 tub & front suspension. Fiat Abarth engine, mated to a close ratio Ford Fiesta gearbox in the back.  ( this was also a long time ago, the guy that got it after me restored it back to original) |
| |
|
|
|
|
|
Dec 15, 2016 22:56:19 GMT
|
A better list of the pro & cons of the DeDion...
Pro.
- Camber control.
- Nothing sticking out below the driveshafts.
- Can be designed so the rollcenter is easily adjustable, without changing any of the other alignments.
- Relative simplicity.
- I've built and raced one before ( there was plenty of room for improvement on that car, but I still think the basic concept was sound...)
Con.
- Hitting a curb or a bump with one wheel will affect the other wheel.
- it is possible that there will be a tendency for it to have axlehop ( which will be worse on a narrow track car, which is what I'm building )
- It is not possible to have a regular sideways location, because the Hewland is in the way. My modified version of the Mumford link should work, but it is unproven.
BTW... I've decided to call it The mac Gillavry Link. Just incase it does work.
And if it doesn't, I'll just live with the shame...
Another unknown is, because I rotated the axle about 1/4 turn from how it was in the Alfetta, the outside part of it now gets a twisting force instead of mostly a bending force.
But it looks like a really sturdy forging, and my car is a lot lighter. So I think it will be fine.
As far as unsprung weight.
It will be lighter than a solid rear axle and about the same as a IRS.
Worst case scenario..
if it doesn't work, and cant be fixed, I'll cut it out and start over... |
| |
|
|
|
|
|
|
|
|
Nothing ventured, nothing gained, as they say!
|
| |
|
|
|
|
|
Dec 16, 2016 11:10:09 GMT
|
pure filth is a good thing by the way |
| |
|
|
|
|
|
Dec 16, 2016 12:00:59 GMT
|
|
Impressive, it takes a great deal of engineering skills and machinery to produce a build of this type
|
| |
|
|
|
|
|
|
|
Dec 16, 2016 18:03:43 GMT
|
Darren, I did not know that... Thanks guys. |
| |
|
|
Anglia68
Posted a lot
Powered By Boredom.
Posts: 2,050
|
|
Dec 17, 2016 13:09:14 GMT
|
|
Mind...blown.
|
| |
|
|
|
|
|
Dec 17, 2016 17:06:22 GMT
|
|
|
| |
|
|
|
|
|
Dec 17, 2016 17:57:40 GMT
|
|
Bookmarked
|
| |
|
|
|
|
|
Dec 17, 2016 18:48:46 GMT
|
|
Thanks guys.
|
| |
|
|
|
|
|
Dec 17, 2016 20:44:10 GMT
|
|
Bloody love this - what a fab little car!
|
| |
"Mechanical Power Subduing Animal Speed" (Robert Trevithick, 1808)
'72 BMW 2000 Touring
'99 TT 180 (mrs)
'72 BMW 2500
|
|
|
|
|
|
|
New doorhinges... They are nicer and stronger than the ones I made long time ago. And hopefully, there will be less gaps and holes where dust & sand can get blown into the car. Another nice thing is that because the pins are now on the outside of the car, I can take them off without having to open them op all the way. So now I can take the doors off even if the car is on the lift. I think they look really nice too. ( the car is still very dirty from last weekend's rain event...) Made by a buddy of mine on his CNC.    |
| |
|
|
heathrobinson
Part of things
Broken everything
Posts: 848 
Club RR Member Number: 111
|
|
Jan 22, 2017 20:55:01 GMT
|
|
those louvred arches are sex on wheels, and the easy-off doors are a great idea! Amazing build man, brilliant!
|
| |
|
|
|
|
|
|
|
Thanks... |
| |
|
|
|
|
|
|
|
Made some more progress on the Flying Brick engine swap. The case I'm using for my Hewland MK9 is aftermarket. It is cast thicker, with mounting points cast in so it can be used as a load carrying piece. It was meant to have the suspension bolt straight to it in a Formula Ford. What's nice about if for me was that part of the bellhousing unbolted, so it was already a couple of inches shorter than a Hewland Mk9 with a VW based case. And keeping it as short as possible is important on my car. Drawback was that it came with a hydraulic throw out bearing. I'm not a real fan of those, if there is a problem the engine has to come out. I'd rather have the hydraulics on the outside. And actually, I prefer full mechanical over hydraulic because when it has to come off there is no brake fluid mess. No bleeding the system, etc... It looked like the shortest possible system would be something based on the original VW arm and pivot points. So I started with an arm out of a Vanagon ( a little longer on the spline side ), which I lengthened on the non-splined side. I coped the measurements off a stock VW case, and measured the distance to the pressure plate. I left myself a bit of extra space, so I could finetune the distance with a little spacer. The spacer also holds the new throw out bearing. The pics show the gutted VW throw out bearing housing, the spacer and the new T/O bearing. ( I matched that up to one that was used on a Tilton by parts numbers, but I believe it was originally a Toyota piece...   |
| |
|
|
|
|
