Scaffolding poles + old VW bits + Rotary engine....
Discussion
Oooh, lovely shiny working thing:
Ooops, I, err, it wasn't me, a strange bloke broke it and ran off.
Then there was an incident involving a pillar drill butchering some finely machined components, a tap, some deburrers and some extra parts. I didn't take a photo of those because of their graphic nature to anyone of a pistonheaded persuasion.
Anyway, it all got back to being shiny after some TLC and some T-cut, and I think all the important bits went back in. I'm sure it'll fine.
That bit that pinged off into the corner didn't look vital.
Ooops, I, err, it wasn't me, a strange bloke broke it and ran off.
Then there was an incident involving a pillar drill butchering some finely machined components, a tap, some deburrers and some extra parts. I didn't take a photo of those because of their graphic nature to anyone of a pistonheaded persuasion.
Anyway, it all got back to being shiny after some TLC and some T-cut, and I think all the important bits went back in. I'm sure it'll fine.
That bit that pinged off into the corner didn't look vital.
It's not so much a case of me knowing better, it's more setting them up correctly for the appliction - a cheap damper set correctly will be better than the best damper in the world if it's valved wrong.
Having said that, nearly every damper is built to a price, so there's usually some odds and sod you can tidy up or improve in most things - until you get to silly spec dampers - if you're willing to invest the time.
As it is, I'm not using this Penske unit quite how it was intended, so it's just had a little work to make it easier for me when setting things up.
Having said that, nearly every damper is built to a price, so there's usually some odds and sod you can tidy up or improve in most things - until you get to silly spec dampers - if you're willing to invest the time.
As it is, I'm not using this Penske unit quite how it was intended, so it's just had a little work to make it easier for me when setting things up.
Edited by PhillipM on Wednesday 18th December 15:19
Well, the new arm revealed one stumbling block after being cycled - the existing rear geometry gave massive toe change with the extra travel we were intent on using, and nothing beneficial either. After hearing Ed swearing about it for a while I had a look and we decided to just re-do the mounting points on the car and make another new arm - I've been wanting to alter some of the rear geometery for a while, so there's really no better time than when you're making a new arm.
We've removed a little of the rear camber change, and lifted the outer pivot to help with the toe curve, which now has about half the previous toe change over the travel and what is there is helping rather than hindering now. As a side bonus that brings the anti squat up a little closer to where I'd like it, and lowers the rear roll centre which should help with a little more traction/grip.
Cheap and cheerful jig to swap the pivot location over to the other side of the car, nothing fancy but it works:
And on with the new, new arms:
It's actually made the area for transmitting load around the bumpstops and damper mounts much neater so they should end up a little lighter too, added bonus!
We've removed a little of the rear camber change, and lifted the outer pivot to help with the toe curve, which now has about half the previous toe change over the travel and what is there is helping rather than hindering now. As a side bonus that brings the anti squat up a little closer to where I'd like it, and lowers the rear roll centre which should help with a little more traction/grip.
Cheap and cheerful jig to swap the pivot location over to the other side of the car, nothing fancy but it works:
And on with the new, new arms:
It's actually made the area for transmitting load around the bumpstops and damper mounts much neater so they should end up a little lighter too, added bonus!
Edited by PhillipM on Friday 31st January 00:10
No, nowhere close to that, we're still fairly narrow track compared to Baja/KoH/Trophy Trucks, etc, and our relatively short tyre height hurts travel.
We'll be around 18 inches, give or take, if we altered the tyres you could get another 4 inches easily, but then you're up to the massive desert-racing tyre sizes, which are way too big and heavy for what we do.
The day someone invents a tall, strong, but lightweight tyre for this sport we'll bury the bugger in cash.
We'll be around 18 inches, give or take, if we altered the tyres you could get another 4 inches easily, but then you're up to the massive desert-racing tyre sizes, which are way too big and heavy for what we do.
The day someone invents a tall, strong, but lightweight tyre for this sport we'll bury the bugger in cash.
Edited by PhillipM on Saturday 11th January 18:37
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