PistonHeads.com Forum

GTR crash

Author
Discussion

spatz

1,783 posts

105 months

Thursday 30th June 2011
quotequote all
that could not be any simpler, just take a relay that is controlled by the hatch buttons the factory is supplying.
I do not remember if these have been NO or NC,but I think they must be normally Closed and only if both are open (catch engaged) then
my LED turns off.
This means you would need a relay that is closing the circuit for the starter cable once both catches are engaged.
So essentially the relay would be engaged when ignition is on and catches open and disengaged when catches are closed (regular driving position)
Just use a relay that is SPDT (single pole double throw)
I can make a wire diagram if anybody is interested. It would be no problem to integrate this in the existing wire loom.

UltimaCH

3,019 posts

108 months

Thursday 30th June 2011
quotequote all
crafty said:
^^^ similar concept to a motorbike.

Wondering why there's a priest in the bottom corner - read here
http://xjbikes.blogspot.com/2009/01/how-to-test-yo...




laughlaughlaugh

UltimaCH

3,019 posts

108 months

Thursday 30th June 2011
quotequote all
spatz said:

It would be no problem to integrate this in the existing wire loom.
Uwe, that would be an excellent safety and play safe measure. Factory please take note

Steve_D

10,988 posts

177 months

Thursday 30th June 2011
quotequote all
UltimaCH said:
spatz said:

It would be no problem to integrate this in the existing wire loom.
Uwe, that would be an excellent safety and play safe measure. Factory please take note
The only drawback is that you can't now start the engine with the rear clip open.

The microswitch + LED system is OK but can still be missed whereas a very annoying buzzer going off in the cockpit is not easily missed or ignored.

Steve

Thevet

1,224 posts

152 months

Thursday 30th June 2011
quotequote all
For info, my crash seems not to have been a rear clip failure, although this is not recorded on the track videos, I believe a rear drive shaft failed maybe exacerbated by my moving the engine 2cm back in the chassis to fit in the supercharger I used. I know both clips were fully engaged as I clearly remember checking these after a bit of engine tinkering before going back on track prior to the crash.
Only help I can offer is to remember, it's only nuts and bolts, they can be replaced, people are not so easy to rebuild. Hopefully you were insured.
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V8 Vum

3,200 posts

140 months

Thursday 30th June 2011
quotequote all
Good to note, however I think my idea of not being able to move off if the Clip is not fully engaged will give confidence to the driver and passenger!

It can easily be rigged to make sure the three states can be handled:
1. If the handbrake is engaged, but not the clips, then the car ignition is on and can be started.
2. If the handbrake is dis-engaged whilst the clip is also, then the ign circuit is shut off...Car stops
3. If the Handbrake is disengaged and the Clips are shut, then the ign is ON and the car can be driven.

Diag please?

cheers

spatz

1,783 posts

105 months

Thursday 30th June 2011
quotequote all
Steve_D said:
The only drawback is that you can't now start the engine with the rear clip open.

The microswitch + LED system is OK but can still be missed whereas a very annoying buzzer going off in the cockpit is not easily missed or ignored.

Steve
yep professor that is absolutley right, but there is a fix to this, for service reason it is possible to engage the catches by using a screwdriver, so
when both are closed you could have clip open and start the engine. And you could not close the bonnet at all without releasing the catches first. So could actually work quite well in practice.

V8 Vum

3,200 posts

140 months

Thursday 30th June 2011
quotequote all
Is there a problem with the upload facility? I have tried several times with an unknown error????
Been OK before!

cheers

keith






V8 Vum

3,200 posts

140 months

Thursday 30th June 2011
quotequote all
ThumbSnaps has crashed!

mybrainhurts

88,024 posts

174 months

Thursday 30th June 2011
quotequote all
V8 Vum said:
ThumbSnaps has crashed!
It needs a warning buzzer...

Paul.B

3,927 posts

183 months

Thursday 30th June 2011
quotequote all
If this issue worries you why not just install x2 solinoids (sp?) that fire safety pins through the main body tub and the rear clip flange? They could be triggerd by the ignition switch. Or be switched to engage/disengage as required.
These would be belt & braces if the rear clip does try to lift the pins would prevent it from opening.
You could still employ the current latches to actually hold the clip closed and have the warning micro switches.

Just a thought

Storer

4,528 posts

134 months

Thursday 30th June 2011
quotequote all
You could add a dragster type parachute fired when the rear clip starts to open. The sudden jolt would throw the clip closed and then you could fire explosive bolts to release the chute and continue your journey without stopping.

Having been flippant about it I know I will now have a "clip opening moment" in the future!!!

Paul

Moogle

257 posts

89 months

Thursday 30th June 2011
quotequote all
V8 Vum is right, you can rig it so you can start the engine with the clip open, much like you can start a bike with the side stand still down, the moment you put it in gear it cuts the engine.

You can do the same with the rear clip, you can start the engine with the rear clip open but the moment you release the handbrake it cuts the engine.

Very simple and a good safety, it's all very well saying "just remember to clip them properly" but just like motorbikes, people still try and ride off with the side stand down, I've done the same, it happens.


GTR One

Original Poster:

216 posts

136 months

Thursday 30th June 2011
quotequote all
If the GTR can be rebuilt - and I hope it can, then switches on the latches will be a certainty! The buzzer seems the best idea. Thanks to all the support I've received from people on here and also the factory. Hopefully the insurance will make a determination soon and I can move things forward. Watch this space

Liam

GTRMikie

819 posts

167 months

Friday 1st July 2011
quotequote all
The factory did a splendid job of rebuilding my GTR after my "incident" a few years ago. If the insurers authorise the repair the car will come back as good as new.

V8 Vum

3,200 posts

140 months

Friday 1st July 2011
quotequote all
Does anyone know how to report the 'Upload' Problem?

It immediately comes up with 'loading Iframe' and freezes!

Been like this since yesterday and I tried to report to Thumbsnap, but have no response!
STIG? Anything you can help with here?

cheers

Keith

Stig

11,270 posts

203 months

Friday 1st July 2011
quotequote all
Gulf LS3 said:
Do you think its wise to be talking about this on an open forum?? Insuring Ultimas is becoming harder and harder and after a chat with Hegarty last year this is one of the reasons why!!
I think people having accidents in Ultima's and the impact on insurance usually has far more to do with power to skill ratio and dodgy road conditions than the canopy opening.

As said, the factory supply a latch warning kit, so no reason not to fit it really?

Insurers reluctance to provide policies is down to the specialist nature and value of the cars and the state of the general insurance market IMHO

Let's keep this in proportion guys. Whilst it 'can' happen, taking care to ensure the catches are fastened will ensure that it doesn't.

Fit the warning system if you're worried about it.

Re. the upload issue - no idea? Will check with the PH IT bods and see what gives

Edited by Stig on Friday 1st July 10:14

V8 Vum

3,200 posts

140 months

Friday 1st July 2011
quotequote all
Stig said:
Re. the upload issue - no idea? Will check with the PH IT bods and see what gives

Edited by Stig on Friday 1st July 10:14
Thanks Mate!

Dolly - Trolley OK?

Keith

Stig

11,270 posts

203 months

Friday 1st July 2011
quotequote all
V8 Vum said:
Thanks Mate!

Dolly - Trolley OK?

Keith
It's doing a sterling job mate! Just a shame it's not a GTR chassis on it - but I will keep it to hand once the seven is done to serve again wink

Uploaded these to test thumbnsaps - seems to be fine now?



How time flies... this was Charlie when I built the Can-Am



and now!



Edited by Stig on Friday 1st July 10:59

V8 Vum

3,200 posts

140 months

Friday 1st July 2011
quotequote all
Hi Stig - You have mail! smile

cheers

keith