TF Race Car Build

Post by **Rob Bell** » Mon Jul 08, 2019 10:22 am

Looking increasingly like a 200HPD - and no bad thing that

flyingbanana · Post by **flyingbanana** » Sun Aug 04, 2019 7:12 pm

As I have to have front facing lights on the car for racing.

flyingbanana · Post by **flyingbanana** » Sun Aug 04, 2019 7:14 pm

Now that I have relocated the oil cooler, got the fans fitted.

Post by **Rob Bell** » Mon Aug 19, 2019 1:56 pm

Really interesting! I guess the lights are primarily there for other drivers to see you behind them rather than for iluminating the road ahead, so a DRL approach should work perfectly (and save some weight!)

Does the oil cooler need fans? They look fairly light weight, so I guess not much penalty compared to ducting.

Post by **Rob Bell** » Mon Aug 26, 2019 10:55 am

flyingbanana wrote:Took the drivers door door bars out yesterday, top one dead easy as it is bolted in. Bottom one had to be cut out. N/S is proving more problematic think I will buy some more torx sockets. Huge weight saving, will get a pair of scales and weigh them - they're heavy though.

Had a go at my passenger side bar. Looks like two T30 screws. Trouble is, the outer one rounded off immediately (argh). Is it T35???

flyingbanana · Post by **flyingbanana** » Mon Aug 26, 2019 7:41 pm

Rob Bell wrote:
flyingbanana wrote:Took the drivers door door bars out yesterday, top one dead easy as it is bolted in. Bottom one had to be cut out. N/S is proving more problematic think I will buy some more torx sockets. Huge weight saving, will get a pair of scales and weigh them - they're heavy though.
Had a go at my passenger side bar. Looks like two T30 screws. Trouble is, the outer one rounded off immediately (argh). Is it T35???

FBF6EC98-EB3E-4BB3-A5E8-7A59E3CE4359.jpeg

Not sure Rob, but as you have noticed they are made of chocolate - dead easy to drill out.

Post by **Rob Bell** » Tue Aug 27, 2019 9:20 am

flyingbanana wrote:Not sure Rob, but as you have noticed they are made of chocolate - dead easy to drill out.

It was 30C at the time, so I guess that explains that!

I'll try making a slot, then a screw driver and if not, will drill out. I guess they were never intended to be removed and I have not seen them listed separately on the electronic parts catalogue either.

flyingbanana · Post by **flyingbanana** » Sun Dec 27, 2020 6:08 pm

It's been quite a while, short notice 6 month deployment and returning to lock downs. I have now finished the under tray and rear diffuser just needs a little more fettling before I'm happy.

flyingbanana · Post by **flyingbanana** » Thu Dec 31, 2020 11:00 am

All done, with gates to keep the air clean around the wheels front and rear.

Post by **Rob Bell** » Thu Dec 31, 2020 1:05 pm

2020 has been quite a year hasn't it?

Love this work - I've been giving this a lot of thought for my car too, although I am not allowed to "flat floor" the car under my class regulations (more's the pity). However, filling a few "holes" in the floor I think I could reasonably argue as being "reasonable"

I wasn't planning on enclosing the engine bay like that though - as the sump gets a reasonable amount of cooling and I think on the MGF, most of the engine bay cooling air flow comes from underneath rather than through the side "intakes". I'd be interested to hear how you find engine bay and oil temperatures with this set up, but with a TF, you probably have better air flows via the better shaped intakes.

I really like your diffuser design - hopefully you'll be able to undertake some testing to check its efficacy. What is its angle from the undertray? Really hard to judge from the photos... (looks to be about 10degrees?)

I've recently been enjoying watching Julian Edgar's YouTube videos over Christmas. I like this guy a lot - worth a watch

flyingbanana · Post by **flyingbanana** » Tue Jan 25, 2022 7:00 pm

talkingcars · Post by **talkingcars** » Fri Jan 28, 2022 10:56 pm

flyingbanana wrote: ↑
Tue Jan 25, 2022 7:00 pm
test

Past?

Post by **Rob Bell** » Fri Feb 04, 2022 10:05 am

Looking forward to an update!

talkingcars · Post by **talkingcars** » Sun Feb 06, 2022 10:36 pm

talkingcars wrote: ↑
Fri Jan 28, 2022 10:56 pm

flyingbanana wrote: ↑
Tue Jan 25, 2022 7:00 pm
test
Past?

or passed?

flyingbanana · Post by **flyingbanana** » Sun Jul 16, 2023 2:01 pm

So looks like I will be going out racing again next year after a considerable break. Looking into solid cam conversion and itbs.

flyingbanana · Post by **flyingbanana** » Sun Jul 16, 2023 2:05 pm

Rob Bell wrote: ↑
Thu Dec 31, 2020 1:05 pm
2020 has been quite a year hasn't it?

Love this work - I've been giving this a lot of thought for my car too, although I am not allowed to "flat floor" the car under my class regulations (more's the pity). However, filling a few "holes" in the floor I think I could reasonably argue as being "reasonable"

I wasn't planning on enclosing the engine bay like that though - as the sump gets a reasonable amount of cooling and I think on the MGF, most of the engine bay cooling air flow comes from underneath rather than through the side "intakes". I'd be interested to hear how you find engine bay and oil temperatures with this set up, but with a TF, you probably have better air flows via the better shaped intakes.

I really like your diffuser design - hopefully you'll be able to undertake some testing to check its efficacy. What is its angle from the undertray? Really hard to judge from the photos... (looks to be about 10degrees?)

I've recently been enjoying watching Julian Edgar's YouTube videos over Christmas. I like this guy a lot - worth a watch

Going to cutting holes in the engine bay bulk head as per cup car, didn't notice it in my copy of the build instructions but as I'm looking at ITBs will need to do it anyway.

Also looking into NACA ducts as the elise does.

flyingbanana · Post by **flyingbanana** » Sun Jul 16, 2023 7:38 pm

Have angle grinder will use, should have done this much earlier rather than waiting now because I want to fit ITBs. Much improved heat management and access. Need to remover the header tank to finish off that side and get the flap wheel on to tidy up.

Post by **Rob Bell** » Mon Jul 17, 2023 11:27 am

I've been thinking about this too - I was planning on putting in a return flange around the perimeter of the hole to help preserve some stiffness in the panel. Probably something in the range of 10mm should be sufficient?

flyingbanana · Post by **flyingbanana** » Mon Jul 17, 2023 7:18 pm

There's box section on the other side Rob, so I cut it like I have to retain the integrity of it and the spot welds. I may seem weld it a bit not sure. I'm also contemplating the cut at the bottom as well as per the above. Then cut out a section of he back of the boot behind the number plate area of the bumper and make a duct out of cardboard and resin and cut the bumper to allow the air out.

Post by **Rob Bell** » Tue Jul 18, 2023 4:07 pm

Good point regarding the box section: I'd forgotten about that! But every little helps I think, and seam welding sounds like a good plan (if a little awkward unless you've got the engine out?)

Then cut out a section of he back of the boot behind the number plate area of the bumper and make a duct out of cardboard and resin and cut the bumper to allow the air out.

Interesting idea - there ought to be a beneficial pressure gradient there to make this plan work

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