Just a little progress update............................




have cut the car up and abandoned the project......................................





not!!!!!!!!

Not long got in from the garage, decided its a bit late for the angle grinder now!!

here's a piccy or two, sorry I'm no photographer!



front 3rd march



front built up



6th march progress



and yes, for those not in the know and who were wondering.....the shell is lifted off again at the mo and sat in the garage to one side!

Its really dawning on me now how bloody small the little blighter is!!!!!

To give some idea, its 72" front hub centre to rear hub centre, and 67" track

[Edited on 7/3/07 by NS Dev]

With that turning circle, it'll make a great cab

Keep up the good work!

ATB

Simon

unfortunately with no diff (solid locked) it won't be very good at turning the right way at all!

All that lock is intended for "opposite" use

OMG that looks sooo over powered

like the tyres though...

Nice, what are the two V twin lumps you are using? Did you go TL or VTR?

that looks lots of fun looks like you have put a lot of hard work in to it good luck hope it all goes well Paul

cheers folks!

They are 2004 Aprilia RSV Mille Factory R engines. Make 143hp each as std, with new injection system and a few other mods should see 155hp each.

So that’s about 600bhp/ton, on grass…r u trying to get killed!?

LOL...I love the rear view, those engines will be wild in there

Cheers

Alex

Saw some twin engined grassers in the live action arena at the autosport show, they looked absolutely mental lifting front wheels of the floor and smoking the tyres

Coming along nicely good luck with it

Dave..........

Have you cut up the older grasser then, I know you've flogged the engine and looks like you've nicked the front and rear suspension off it aswell?!

Ned.

Looking very purposeful.

Why not draw up your design and get it published. 'Build your own grasstrack special, and race it'

Don't think it would take much additional effort to get an SVA for it if you really wanted to (with a proper diff obviously )

STOP GIVING HIM IDEAS!

He's got little enough time as it is.

I believe the old grasser was sold minus suspension.

Nat, when you around, i could do with popping round and making sure i fit in the new car :p

As for road legal - his last one was. Well in the sense it was legal cause the police couldn't catch him

probably wouldn't even need an sva, just says it's an agricultural vehicle for working in the fields or summat, it is "grasstrack" afterall

Can you just clarify, are the engines coupled together or is each one driving one wheel?

the drive outputs of each engine will be coupled. Its a standard arrangement on twin engine grassers since they first emerged many years ago.

there will be a step-off shaft on each engine output, to take the chain run clear of the flywheel/alternator housing, then a 630 chain will take the drive to a sprocket on a heavy duty shaft that would normally be a diff, but is just a solid shaft in this case. The other engine does the same and the shaft combines the drives, and dispenses it through a 108mm lobro at each end.

You just have to make sure the gearshifts between the two boxes!!

quote:

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Originally posted by ned
probably wouldn't even need an sva, just says it's an agricultural vehicle for working in the fields or summat, it is "grasstrack" afterall

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quote:

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Originally posted by MikeR
STOP GIVING HIM IDEAS!

He's got little enough time as it is.

I believe the old grasser was sold minus suspension.

Nat, when you around, i could do with popping round and making sure i fit in the new car :p

As for road legal - his last one was. Well in the sense it was legal cause the police couldn't catch him

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quote:

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Originally posted by ned
Have you cut up the older grasser then, I know you've flogged the engine and looks like you've nicked the front and rear suspension off it aswell?!

Ned.

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quote:

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Originally posted by Mr Whippy
So that’s about 600bhp/ton, on grass…r u trying to get killed!?

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lost for words

there's no rush like it, MikeR will tell you how much I usually 5h1t myself just before a race (not literally of course!!! )

I just can't wait to hear it at full chat on the rolling road with both engines!!!

Don't s'pose you could measure the distance shown in this highly accurate cad drawing if you get a moment.


Description

I have a hope that I might be able to squeeze a similar layout in the back of the buggy (possibly post SVA so no hurry ) but space is at a premium.

<blackadder> I have a cunning plan </blackadder>

looking brutal mate

He can't sh*t himself, the 10 trips to the bogs before the race take care of all the sh*t. Its the nervous p*ss i worry about.

95mph is getting me a tad scared, the last one topped out at around what, 80mph (???) and was on the limiter....... 95 is ..... errm .... well quick

Stratford national finals is going to be wild this year - just LISTEN TO ADVICE ON CAR SETUP.

quote:

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Originally posted by NS Dev
there's no rush like it, MikeR will tell you how much I usually 5h1t myself just before a race (not literally of course!!! )

I just can't wait to hear it at full chat on the rolling road with both engines!!!

---

quote:

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Originally posted by iank
Don't s'pose you could measure the distance shown in this highly accurate cad drawing if you get a moment.


Description

I have a hope that I might be able to squeeze a similar layout in the back of the buggy (possibly post SVA so no hurry ) but space is at a premium.

<blackadder> I have a cunning plan </blackadder>

---

quote:

---

Originally posted by NS Dev

quote:

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Originally posted by iank
Don't s'pose you could measure the distance shown in this highly accurate cad drawing if you get a moment.


Description

I have a hope that I might be able to squeeze a similar layout in the back of the buggy (possibly post SVA so no hurry ) but space is at a premium.

<blackadder> I have a cunning plan </blackadder>

---

Will get the tape on it tonight, but basically the engine crank centreline is vertically above the driveshaft centreline in my installation, so the measurement is of the order of 300mm max.

Only problem is the chains will be very short, and therefore not very long lived.


[Edited on 8/3/07 by NS Dev]

[Edited on 8/3/07 by NS Dev]

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Chain isn't vertical, you have to remember that the output of a bike engine/box isn't inline with the crank!

The output sprocket is nearly the rearmost part of the engine, and the chain travels down and forwards to the driven sprocket.

If you draw a line between the driver and driven sprockets it goes at approx 45 degrees down and forwards.

Yes, it does raise the engines somewhat, but yep, there's no choice really, and at 58kg each all up (and most of that very low down) I can live with it!!

here you go, a quality CAD drawing of the layout....NOT!!!


[img][/img]

Got it. Putting the weight back a little like that should help traction on starts as well, as it's getting towards rear-engined.

For some reason the engines look huge, but I think it's because the car is tiny and scale is hard to assess.

[Edited on 8/3/07 by iank]

yea, that's what I was getting at when I said about the car's wheelbase, its only 6 feet long in total!!

The two engine/gearboxes take up less space than my one vauxhall XE 16v did, and weigh less too!

They are a bargain as well. You can pick up the previous mille engines (the ones without the magnesium bits and with the twin plug cylinder heads) which are still 135hp, for £300 now in perfect condition. I paid £500 each for mine factory R ones which are '04 4000 mile jobbies

To put another perspective on it, the two chains are 460mm apart, and that's allowing 100mm between the engines!