New Shakespeare build

[Hightower]

Oh I see. But could they have been hinged plates?

[iandl]

Originally Posted by Hightower

It's all looking rather fantasic.

Can't wait to see what the unholsterys going to be like.

One question. The two composite strips that join the upper seat to the base. Are these meant to bend or are they hinged on the brackets?

The carbon springs are purposely fixed, they twist slightly like an S shape ......the rear spring reloads them when they are getting abused ...

looking forward to finishing them cause i've got a boat to finish

cheers


I

[gtflash]

good job as always! like the upper backrests! what sort of size did u decide on for backrest width.... my next job is to fabricate somet as i hate my seats and particualr upper support(or lack of)!

[iandl]

Originally Posted by gtflash

good job as always! like the upper backrests! what sort of size did u decide on for backrest width.... my next job is to fabricate somet as i hate my seats and particualr upper support(or lack of)!

The upper back support to me ages to work out what I wanted……if you look closely at the picture of the rear backrest you should see it taper out wider the higher it goes ….i studied as many high speed boat pictures as I could find and noticed all the racers etc upper body moved considerably more than the hip area …the taper was added to still allow for some slight movement just under the shoulder socket.
The seat base at the widest part on the rear is 400mm …the inner size of the lateral is also 400mm at its widest point …..this allows me to put in upto 50mm cushioning either side and still allow wet weather clothing. I am also looking at putting in airbag bladders on the laterals ….same as the new Audi R8 …. I have built the backrest to allow for movement but could be wrong in doing this …by having blow up bladders I can determine exactly how much movement (if any) I need
There is a lot of trial and error involved, the suspension parts I know work ….the backrest might work great but also might not work…. but is removable and its back to the drawing board ….Ullman has done a PHD on shock mitigation …..he hasn’t gone for laterals so there might be a reason not too that I have missed.
For the backrest I used 3 layers of fibreglass then used Kevlar hybrid ….I layed it out in the cross design …same as kart seats and formula 3000 …this gives considerable strength but allows flexibility …..also how many of us actually use the backrest …apart from handholds for rear passengers ……..most drivers and passengers will be in the slightly forward position holding steering wheels and handholds …this was the reason I went for a lower back support that will used and such deep laterals.

Speaking with JW last night and I think I should finish 2 ….fit and test then anything that needs changing I can do on the other 4 …..sounds like a plan!!!


Cheers


I

[Cookee]

In our race seats we use Snap On crawl matt, it has excellant shock absorbing properties with zero bounce - nothing that can compare to these puppies though!

[Ian M]

I'm going to stop reading this thread.
I am just plain jealous of the amount and quality of the fittings that you are producing. Amazing Am I missing something

[The Garfish]

Originally Posted by Ian M

Am I missing something

gud luks, brayns, talunt, skil............i cud gow onn butt de bich sez dinna iz reddy


gaRf

[Ian M]

Originally Posted by The Garfish

gud luks, brayns, talunt, skil............i cud gow onn butt de bich sez dinna iz reddy


gaRf

And hair

[gtflash]

Originally Posted by Cookee

In our race seats we use Snap On crawl matt, it has excellant shock absorbing properties with zero bounce - nothing that can compare to these puppies though!

can you explain what this is used for cookie?? the cushions??

[RichardB]

Originally Posted by iandl

.the lateral supports will have 50mm of memory foam wrapped around the inside for body protection ....the seat base itself will have 50mm foam outer areas just at the bum ....the centre of the seat will have 25mm foam in the bum base and around the leg area will be medical gel pads ....front wont get anything other than vinyl.
Ian

Outstanding bit of 'diy' - wish I could knock stuff of that quality up in the shed.

One thought on the memory foam angle (not quite sure if this is still in your plans or has been dropped) but a lot of this stuff seems to be very sensitive to temperature - moulds nicely at near body temp but is like a brick in the cold. Might be unpleasant on those cold mornings.

[Poly]

Ian your seats are incredible.

How much do they move down when a person sits on them? how much travel is there? How does that compare to the ullmans? how does the cost compare for these ones (ignoring your time) - i.e. as a one off project for 6 seats was this to get a look/function that ullman didn't offer or a cost issue? if other ribnutters wanted some would they compare (including labour and material costs but using your existing molds etc) to ullmans on price?

Not sure if there will be "little fingers" around your boat - but are there any moving bits that can trap them?

[Nos4r2]

Originally Posted by Polwart

Ian your seats are incredible.

How much do they move down when a person sits on them? how much travel is there? How does that compare to the ullmans? how does the cost compare for these ones (ignoring your time) - i.e. as a one off project for 6 seats was this to get a look/function that ullman didn't offer or a cost issue? if other ribnutters wanted some would they compare (including labour and material costs but using your existing molds etc) to ullmans on price?

Not sure if there will be "little fingers" around your boat - but are there any moving bits that can trap them?

Ditto what Polwart said-And what are the shock units?

[iandl]

RichardB …good point on the memory foam ……these to be added


Polwart ….seats have a potential travel of 125mm …..on initial sit they move around 25mm ….bouncing heavy about 40-50mm ……I can adjust this by pumping more or less air into the air shock. Time is the biggest factor as I had to learn how to mold make and fibreglass …materials will be around the £600 ea + if you take all 6 as a whole +what I spend on upholstery …….just felt the Ullmans were too commercial looking for a leisure craft but a very well designed seat

No little fingers anymore but no moving parts ….the seats aren’t as springy as you might think ….you can get to try them cause I don’t stay far from you

Nos4r2…the shocks are made by Fox.... air shock 2 with 5.5" travel ..see here



I

[Poly]

thank Ian - they are very smart. I think they might be a bit over the top for me little boat... but I can dream...

[iandl]

thanks Polwart you are welcome anytime ......forgot to add this link for the bladders ...there will be two added into upper laterals


I

[RichardB]

Originally Posted by iandl

RichardB …good point on the memory foam ……these to be added

OMG - Now that is really cunning! We have seat warmers in the car and the wife and kids love them - but I better not mention them for the boat, they will be after them there too.

[Cookee]

Originally Posted by gtflash

can you explain what this is used for cookie?? the cushions??

I just use it to sit on, but a couple of the OCR boys actually line the seat with a whole mat, it keeps its shape reasonably well after a couple of uses, is easily removable and wipes dry!

[iandl]

been mulling over loads of ideas for the A frame and rear bench seat .....I spoke to Steve the boat about a rear bench molding about a year ago but was expensive for a one off ....Shakespeare have now gone and made a molding and i'll be picking mine up mid january ....the new 7.2 are designed for twin engine setups so will take a bit of modding to get on mine but do-able, will be glad of the extra storage space ......very scorpion like ........looking forward to getting on with it.

not been doin a great deal with the actual boat .....weathers been shite but have got on with some planes and other stuff

Shock mitigating seats ....if anyone was wondering why i havent updated it was because i came to an agreement with Johan Ullman not to show any further pics in progress......

Ian

[Poly]

Originally Posted by iandl

....if anyone was wondering why i havent updated it was because i came to an agreement with Johan Ullman not to show any further pics in progress......

Ian - I presume that is in return for some good deal for you (rather than any threats from him!) - in which case well done - and clearly a positive comment on the design/engineering.

[Chris]

Originally Posted by iandl

Shock mitigating seats ....if anyone was wondering why i havent updated it was because i came to an agreement with Johan Ullman not to show any further pics in progress......

Ian

Why?

Was he worried you might be able to undercut his ridculous price?

Its not as though you copied his deign was it?