Help With Spit Design
#1
Posted 21 October 2012 - 07:54 AM
I know that there are several posts on the subject already but Im still unsure of best position of the 'skewer' going though the mini. I'm assuming the best place to take it through the bulkhead is the centre binnacle hole but wheres the best place to take it though the back seat? I want to achieve a balanced car once it's on the spit and mounting it to the parcel shelf doesn't look like it will gIve me that. If anyone has any dimensions (front and back) for pole heights that would be great.
Any other tips on the design welcome too
Thanks, chris
#2
Posted 21 October 2012 - 08:01 AM
In earlier minis mk1/2/3 there was a hole in the back seat panel which allowed the spit pole to travel through thus maintaining correct rotation and balance..
#3
Posted 21 October 2012 - 10:23 AM
#4
Posted 21 October 2012 - 11:51 AM
Do you have a pic of the hole in the seat back with rough measurements as you seem to of found the centre of gravity. This information will also help me to design and build a spit for my project.with my one i simply drilled a hole in the back seat panel for the pole. I admit its a bit cowboyish but the panel will be hidden and i can weld it back up if i want. It made for a simple spit design and through a complete fluke is well balanced!
#5
Posted 21 October 2012 - 12:04 PM
with my one i simply drilled a hole in the back seat panel for the pole. I admit its a bit cowboyish but the panel will be hidden and i can weld it back up if i want. It made for a simple spit design and through a complete fluke is well balanced!
I was thinking the same as mine is mk3. If you have some measurement then that would be a great help.
#6
Posted 21 October 2012 - 12:08 PM
I have a spit, but does not have then central pole... attaches to the shell at strategic points. http://www.ebay.co.uk/itm/150924921826
In earlier minis mk1/2/3 there was a hole in the back seat panel which allowed the spit pole to travel through thus maintaining correct rotation and balance..
Thanks, I've seen this link before but I'm a bit too mean to pay 300quid, plus a little unsure about the design. As both ends of the spit are not connected, it uses the cars body as a toque tube. If I remove the floor etc I'd be worried about twisting the shell, even with bracing. ???
#7
Posted 21 October 2012 - 12:57 PM
#9
Posted 23 October 2012 - 10:26 AM
Hope they help??
Attached Files
#10
Posted 23 October 2012 - 01:00 PM
#11
Posted 23 October 2012 - 01:03 PM
#12
Posted 23 October 2012 - 01:06 PM
#13
Posted 23 October 2012 - 03:56 PM
#14
Posted 25 October 2012 - 02:00 PM
So...people seem to attach it to the front bulk head using the front sub mount holes and the rear of the car using the rear damper mount holes. I've got to replace the complete inner wheel arch on my project and so I'm wondering how else I could attached it at the rear - any ideas? Is the back of the seat string enough?
#15
Posted 25 October 2012 - 02:46 PM
My spit used a single scaffold pole just a little longer than the whole car (well, it was actually two shorter poles butt welded together). The pole was mounted as low as possible through the speedo housing hole and centred in the middle of the rear seat hole (Mk III) to keep the shell level. With these mounting points the bare shell was a little bottom heavy but perfectly manageable by one person. With both subframes and a few bits 'n bobs added it became progressively bottom heavy but with a couple of good swings I could get it upside down and lock it in that position. The whole spit was only 6" longer than the shell as I have a pretty small garage. This was workable but an extra foot on the length would have been nice.
The scaffold pole rotated in scaffold clamps on top of the A frames and allowed the body to be locked at any angle. Locking one clamp was enough to hold the shell at an angle, locking both was sensible if I was working underneath. The A frames were stainless steel frames from work and came with the locking castors. A couple of roof joists completed the spit. Front bulkhead body to pole brackets used the speedo shroud mounting holes (six) for attachment. The rear pole/body bracket used the four holes around the rear seat aperture. The front and rear bulkheads took the weight of the shell, subframes and me without any problems.
I carried out stripping, fitting new panels, prep, painting, wiring, fuel pipes, brake pipes, polishing, head lining, rust proofing, in fact pretty much everything except engine fitting while the body was on the spit.
Edited by SolarB, 25 October 2012 - 02:53 PM.
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