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Gearbox?????

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chop-chop Commited Dubber

56 posts · joined Aug 2010 ·

#815171
Gday dubbers, can anyone tell whats involved with using a G/Box formula vee style. IE put the weight of the motor infront of the rear axle,sort of mid mounting.
Drawing up plans for a lapsprint car and a trike. want them both midmounted.

cheers
das boot ist meine bevorzugte mug
Warum ist es so, weil die Stimmen in meinem Kopf sagte mir

chop-chop Commited Dubber

56 posts · joined Aug 2010 ·

#815172
By the way the lapsprint car will be a twin turbo'd beetle
das boot ist meine bevorzugte mug
Warum ist es so, weil die Stimmen in meinem Kopf sagte mir

Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion

8,040 posts · joined Jan 2003 ·

#815175
you spin the diff around, so the crown wheel is on the other side of the Gbox 👍


dogo Seriously Crusin Dubber

128 posts · joined Oct 2005 ·

#815176
or turn the gearbox upside down.

chop-chop Commited Dubber

56 posts · joined Aug 2010 ·

#815180
which is the best way? I'm still learning about dub's. Played with old holdens for last 20 yrs.
das boot ist meine bevorzugte mug
Warum ist es so, weil die Stimmen in meinem Kopf sagte mir

sander288 "Bolt-on Master"

1,404 posts · joined Aug 2008 ·

#815224
I would say switch the diff around like what craig said; there isn't a single vee out there that I know of that has it upside down...
BMW R65 LS
1967 1300 Deluxe
Swing-axles FTW ❗

chop-chop Commited Dubber

56 posts · joined Aug 2010 ·

#815619
Thanks for the info and help fella's
das boot ist meine bevorzugte mug
Warum ist es so, weil die Stimmen in meinem Kopf sagte mir

bigrudi Wolfsburg Wizard

401 posts · joined Apr 2005 ·

#816132
why dont u just run a subaru gear box 5 gears and away u go cheers Rudi

Sides Veteran Volks Folk

2,220 posts · joined May 2007 ·

#816164
Yeah - swap the diff around is the normal caper. Curious tho... with the beetle... what's the plan for rear suspension... multi-link of some sort ??? Don't imagine there'd be much room for torsion bars and stuff with a mid engine setup...

I know of a few open wheelers that run a beetle box mounted upside down... believe it had something to do with wanting the starter motor sitting down lower to help the CoG. Need to make sure the breather hole is well and truly sealed up if going that way I'd think !!!

😂
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chequer57 Seriously Crusin Dubber

125 posts · joined Feb 2006 ·

#819433
The upside down thing.

The Hewland Mk8 & Mk9 were originally
VW cased gearboxes and they are up side down.

The upside down thing is you can mount the centre line of the engine lower as upside down the input shaft is below the drive shafts.

Which is pretty important for inline and V config engines.

Regards,

Ian

Formula Vee btw rules say how to mount the gearbox
Formula Vee, preserving engineering museum pieces in Australia since 1964

HappyDaze Superannuated

2,887 posts · joined Jun 2009 ·

#819454
Turning the box upside-down would create ground clearance problems. OK for engines without a camshaft & oil pump under the crank. Most of the upside-down boxes, incl. Hewland, run a 'conventional' engine - usually dry sumped.

You will most likely lose some straight-line traction by going mid-engine, but - depending on the suspension setup - gain heaps in the corners.

Cheers, Greg
I'd rather wear a Beetle out by racing it than by polishing it!

chop-chop Commited Dubber

56 posts · joined Aug 2010 ·

#822016
I think just turning the G/Box around and swapping the diff over might be the go. Was going to go with a set up similar to independant rear with half chasis under the beetle to give enough clearance and keep wheels tracking straight up and down
das boot ist meine bevorzugte mug
Warum ist es so, weil die Stimmen in meinem Kopf sagte mir