what to do against the heat.........?

[spatz]

yesterday we had a hot and sunny day here in germany and the beast heated up quickly. The hot breeze from the front coming into the hole of the steering rack and through any other entries made me thinking if anybody tried an additional panel before the battery compartment ?
When it is chilly the constant heating from the bottom is nice but at 32 degrees I could really do with less.
The ally panels still work as radiators although I insulated the heater hoses......with thick pipe insulation.

[crafty]

One of these will fix your steering column issue.

http://www.summitracing.com/search/Brand/Seals-it/...

Edited by crafty on Monday 23 August 07:59

[UltimaCH]

spatz said:

yesterday we had a hot and sunny day here in germany and the beast heated up quickly. The hot breeze from the front coming into the hole of the steering rack and through any other entries made me thinking if anybody tried an additional panel before the battery compartment ?
When it is chilly the constant heating from the bottom is nice but at 32 degrees I could really do with less.
The ally panels still work as radiators although I insulated the heater hoses......with thick pipe insulation.

Hi Uwe, I was thinking that this should be a standard modification for those living in warmer climates that the "Islands" further north. I believe Ikom integrated this mod in his build:
http://www.ultimabuild.com/june_2004/000352.htm
This is a nice build site with some interesting pieces but unfortunately is unfinished and nothing has been posted since October 2005. Don't know what happened to Ikom. Does anybody here know by chance? It did post a mail some months back but didn't get a reply....

[spatz]

thanks I think that is probably the most effective way to get the heat away from the front bulkhead, you can really tell
that it is coming from the radiator as the breeze is increasing with speed.
It seems there is a good amount of air not leaving the bonnet opening but travelling around the front bulkhead. All parts in the front compartment
including the battery get as hot as the radiator......I will make this panel removable as it serves only the purpose to block the heat.

[shithotfast]

I put an ally panel attached to the cross member in front of the rack, it almost touchs the fibre glass of the front clip, down to the chassis. The heat then flows out each side to the front wheels area. this keeps the battery/rack etc cool.

[Gulf LS3]

move to England that should sort things out

[spatz]

yes tempting....

[Gulf LS3]

or go out in the Aston

or take all the bodywork off and make it into a Ariel Ultima

[spatz]

during the build I did a test drive with chassis only, the heat that I got in the face was unbelievable, so the windscreen is more like a heat deflector than anyhting else.....

[Graham-P]

This is my nemesis, I have tried to solve this heat problem but still failing!
I have attached a panel behind the radiator, covered the radiator pipes with thick foam insulation, insulated the cockpit panels with thick sound deadener and heat mat, I have filled any gaps that have a hot pipe with thick matting, plus I have disconnected the heater and looped the hose within the engine bay. I have even stuck thick matting up under the dashboard to slow down the heat buildup that the black covering gets on a hot day.
I still get very warm air wafting up from under the dash within ten minutes of starting a journey, I have now attached a small blower motor behind the front brake duct and have a 3 inch pipe going into the cockpit pointing at the pedals to force fresh air into the cockpit, but my feet still roast………
I think that the sides of the battery/steering rack ‘compartment’ needs sides and some sort of top to isolate the front of the cockpit.
I think the main problem is that when the hood is off low pressure is formed over the cockpit dragging air out of the cockpit, this is replaced by air from under the dash which is the hot air from around the hot pipes going to the back of the car, plus (if you haven’t filled the gaps around the rear of the luggage containers) hot air from the hot engine bay.
I would be interested in your solution.
Oh I also have air con but we don’t have the best unit, it ok in the GTR but nowhere near powerful enough for a CanAm.

Graham

[spatz]

good observation, I had similar thoughts my perception is that the heat is increasing with the speed, so definetely from the radiator.
Considering how hot the battery and all other bits are getting I would say they are in the direct flow of hot air of the radiator and what is circulating
under the bonnet. I have a fresh air inlet but this is coming through vents in the dash so not very helpful for the hot air coming from the front bulkhead.
I think I will make some experiments with insulation material and see what it helps.

[Steve_D]

If you do not have the panels at the rear of the pods to close off the engine bay then that is most likely where the heat is coming from.

If you believe the heat is coming from the rad then work will be required to seal the rad to the duct in the front clip so that all the heat exits via the duct. Adding insulation in other places is not addressing the root cause.

Steve

Edited by Steve_D on Tuesday 24th August 13:02

[spatz]

thanks steve,

I have sure very little heat from the back or the engine bay,
I have been driving bare feet and the front bulkhead was HOT.
The ally panels around the tubes are heating up as well and I probably have
to seal the front bulkhead much better including the hole of the steering rack which
is suspect to transfer most of the "hot breeze"

[Graham-P]

If the luggage container lids 'pop up' at over 50mph or so then air is getting in from the engine bay. When I sealed the rear of the containers with close cell foam it stopped the 'popping' lids, but now I have the ECU loom going through the rear of the drivers container I can feel a breeze coming through the finger hole in the lid, not enough to pop the lid, but I still need to close the gaps around the loom.

[spatz]

I am sure some of the air is going through the pods unless you seal the front trimmer panel tight against the tubes and anything else that is there.
I have some velcro on the carbon lids they do ont pop so quickly....

[GTRCLIVE]

Have you not thought its the high pressure air from the rad area that needs to be vented....building pressure under the front clip will make the issue worse. So better venting will cut down the issue by a large percentage...





Curtasy of the GTW

[DHGTR]

Steve and Graham both have valid points, i also get 'blow back' coming from the engine bay. Hot/warm air definitely comes back along under the luggage pods.
Very interesting about the battery area getting hot - i hadn't realised this. Another little job.

Dave

[spatz]

GTRCLIVE said:

Have you not thought its the high pressure air from the rad area that needs to be vented....building pressure under the front clip will make the issue worse. So better venting will cut down the issue by a large percentage...





Curtasy of the GTW

Hi clive,

I want to drive my car - I like what you do, but I need more simple easier solutions......there is a long winter coming along my brain will sure shuffle something up

[Graham-P]

GTRCLIVE said:

Have you not thought its the high pressure air from the rad area that needs to be vented....building pressure under the front clip will make the issue worse. So better venting will cut down the issue by a large percentage...





Curtasy of the GTW

mmmmm....maybe a new front clip for next year now where did I put Jon Olson's email...................

[Gulf LS3]

Mr Steve Smith did that work for Wayne, Ultima offer a duct that goes in the normally blind area behind the front wheels, i will see if i can find a picture but im sure it would help. Im sure its to cool the brakes but hot air will find its way out.