GTR mirrors again

[V8Dom]

hi

still looking at replacing my GTR mirrors. Id like to be able to see more than just the rear wing!!

looking through the old threds, has anyone played arround since with different mirrors.

Im looking at forward facing mirrors so either canam mirrors mounted on main body between doors and front clip or an alternative.

Any photos of ones fitted would be appreciated.

Thanks dom

[ROWDYRENAULT]

As I set in the car it looks as though raising the wing by as little as an inch and a half would change the usefullness of the mirrors by quite a bit, any thoughts? Lee

[7litrebig]

Dom - I fitted Can Am mirrors to my GTR from new and factory advised at the time no-one had done it befoe (weren't sure if they would pass IVA (field of view)- which of course won't bother you. I only did it as I preferred the look of the can-am style, but in practice they also gave a huge improvement over standard GTR mirror position in terms of field of view (and no problems with IVA). See a couple of pics below

Cheers
Paul

[V8Dom]

ROWDYRENAULT said:

As I set in the car it looks as though raising the wing by as little as an inch and a half would change the usefullness of the mirrors by quite a bit, any thoughts? Lee

I spoke to the factory about this as Jeffs twin turbo car in the states has a wing which is fixed higher, but they advised it changes the downforce alot if its moved upwards.

Also another thought is the use of mirrors while driving... forward mounted will allow less head turn to see behind, however the further they are in distance from your view the smaller the image in the mirror.

I like LS7Tangos set up but not sure on looks, but I like the photos of the GTR with canam mirrors... that looks cool.Maybe mounted on the body between the front clp and door will suit my needs.

Dom

[Steve_D]

I just have add-on overtake mirrors fitted to the underside of my mirrors which work fine with a clear view under the wing. Not pretty maybe but a simple solution.

Steve

[LukeSi]

7litrebig said:

Dom - I fitted Can Am mirrors to my GTR from new and factory advised at the time no-one had done it befoe (weren't sure if they would pass IVA (field of view)- which of course won't bother you. I only did it as I preferred the look of the can-am style, but in practice they also gave a huge improvement over standard GTR mirror position in terms of field of view (and no problems with IVA). See a couple of pics below

Cheers
Paul

I would never dare park that anywhere, I would always be worrying that some twunt would think it was funny to snap the mirrors off.

[GTRCLIVE]

Ask Andy I managed to knock one of his off in my garage as I brushed past it and hit it with my elbow... I had to Epoxy it back together, but the F/G was a little thin on the base ... It was 10mm thick by the time I had finished with it...

[GTRCLIVE]

V8Dom said:

I spoke to the factory about this as Jeffs twin turbo car in the states has a wing which is fixed higher, but they advised it changes the downforce alot if its moved upwards.


Dom

Yes it will make it more effective as its in a better more undisturbed air stream
and that's bad why ???? I must be missing something again

[7litrebig]

V8Dom said:

....Also another thought is the use of mirrors while driving... forward mounted will allow less head turn to see behind, however the further they are in distance from your view the smaller the image in the mirror.....

The head turn question is always interesting... My personal view and experience is that it isn't an issue - the trade of of a little more head turn is massively increased field of vision - worth it I think. I could understand the forward mounted argument if you're racing seriously at 10/10ths and really want to limit head turn but for (mostly road) use I'll take the improved visibility every time.

[V8 Vum]

Not having had one...are the can-am mirrors electrisical? (don't IVA need this?)

[Steve_D]

V8 Vum said:

Not having had one...are the can-am mirrors electrisical? (don't IVA need this?)

I think the Factory mirrors are electric.
On a CanAm with a central rear view mirror only the drivers side has to be adjustable from the drivers position so without windows manual adjustment would be possible. If the interior mirror does not give an adequate field of view then a near side mirror becomes a requirement and would then need to be electric as you could not reach it from the drivers position.

Steve

[7litrebig]

Steve_D said:

I think the Factory mirrors are electric.
On a CanAm with a central rear view mirror only the drivers side has to be adjustable from the drivers position so without windows manual adjustment would be possible. If the interior mirror does not give an adequate field of view then a near side mirror becomes a requirement and would then need to be electric as you could not reach it from the drivers position.

Steve

Yes, both electric... for the reasons Steve mentioned - must be adjustable from drivers position.

[V8Dom]

GTRCLIVE said:

Yes it will make it more effective as its in a better more undisturbed air stream
and that's bad why ???? I must be missing something again

because more rear downforce means less front down force as the car is squatting down at the back under speed and lifting the front.. We after all need more front down force already

Dom

[ezakimak]

V8Dom said:

because more rear downforce means less front down force as the car is squatting down at the back under speed and lifting the front.. We after all need more front down force already

Dom

If you need more downforce at the front you would need to get the splitter and underbody working better. i think where the rules allow it most cars tend to run the rear wing lower as it helps energise and drive the diffuser. this has been reported in some makes and race series as improving overall downfore as well as reducing drag. You will get a suction peak at the point where the diffuser tunnel deviates from the flat bottom area, so the further forward you can get this the more front downforce you gain.

in current race series have a look at the DSR classes of cars running in the states - mini LMP style cars often powered by bike engines Sthor, West and Speads all make good examples. A lot have lower mounted rear wings.

for a more top level example look at the later years of the Group C, IMSA and early world sports car years. Jaguar, Mercedies, Mazda, Nissan, Lola and countless others all had low mounted rear wings to help drive and energise the underfloor.

documented quite well in this.
http://www.amazon.com/Inside-IMSAs-Legendary-Race-...

Regards Ryan