Taupo: Something to consider

**kel** · 7th May 2014, 13:46

Originally Posted by chrisc

Wish I had a fairing and some more power now haha.

You do have a fairing, its even been cut down for the lower bars. Go have a look in that box of bits.
Was wanting to get my fairing mounted up but will probably not have time.
Do the buckets get to share garage 9?

**seymour14** · 7th May 2014, 13:46

Originally Posted by chrisc

Emailed Rob. Still availability for buckets, not motards or sidecars.
I didn't think I would be able to attend this but looks like I will so am going to put my name down. Wish I had a fairing and some more power now haha.
First time racing not on a kart track, I'm super looking forward to it!

Remember to change your gearing!

**chrisc** · 7th May 2014, 15:20

Originally Posted by kel

You do have a fairing, its even been cut down for the lower bars. Go have a look in that box of bits.
Was wanting to get my fairing mounted up but will probably not have time.
Do the buckets get to share garage 9?

Yeahhh... the thing about that FXR fairing was that I never thought in a million years I'd bother putting an FXR on a full sized track so I sold it

I also thought my RS would be closer to going than it is but hey, slowly slowly catch the monkey as my old boy likes to say.
Will bring a calendar for lap timing, a novel for the straight and something to eat so I don't starve.

Originally Posted by seymour14

Remember to change your gearing!

Bigger sprocket on the rear right?

Thankfully I got a bunch of sprockets from Kel when I bought the bike so I'll try a few out. Anyone have any suggestions on how low to go on a 19hp, fairingless FXR for Taupo track 2?
Will check the ratios I have when I get home.

**Henk** · 7th May 2014, 16:51

Originally Posted by chrisc

Yeahhh... the thing about that FXR fairing was that I never thought in a million years I'd bother putting an FXR on a full sized track so I sold it

I also thought my RS would be closer to going than it is but hey, slowly slowly catch the monkey as my old boy likes to say.
Will bring a calendar for lap timing, a novel for the straight and something to eat so I don't starve.

Bigger sprocket on the rear right?

Thankfully I got a bunch of sprockets from Kel when I bought the bike so I'll try a few out. Anyone have any suggestions on how low to go on a 19hp, fairingless FXR for Taupo track 2?
Will check the ratios I have when I get home.

Start with 15 and if won't pull it switch to 14. Don't go any lower than that.

**Bert** · 7th May 2014, 18:59

Originally Posted by Henk

Start with 15 and if won't pull it switch to 14. Don't go any lower than that.

I'm glad Chris that you can make it, i put your name down yesterday in the vain hope that you would come...we can continue the battle from Tokoroa (you can have Henk's beer I owe him).

Don't go too high on the gearing as track two isn't as big as it looks. We generally run the same has tok 14-47.

Game on.

**chrisc** · 7th May 2014, 22:21

Originally Posted by Bert

I'm glad Chris that you can make it, i put your name down yesterday in the vain hope that you would come...we can continue the battle from Tokoroa (you can have Henk's beer I owe him).

Don't go too high on the gearing as track two isn't as big as it looks. We generally run the same has tok 14-47.

Game on.

I've paid my money and submitted my forms. Bring it on.
You may have a faster bike, a fairing and a GPR chassis but I have a weight advantage, an excessively competitive mind and yoof on my side.

I just checked and my highest gearing is 13/47 being 3.62 compared to your suggested 14/47 being 3.36
Anyone have a 14 tooth front sprocket for an FXR I can borrow for the weekend? I won't be able to get one before Saturday.

**Henk** · 7th May 2014, 22:27

Originally Posted by chrisc

I've paid my money and submitted my forms. Bring it on.
You may have a faster bike, a fairing and a GPR chassis but I have a weight advantage, an excessively competitive mind and yoof on my side.

I just checked and my highest gearing is 13/47 being 3.62 compared to your suggested 14/47 being 3.36
Anyone have a 14 tooth front sprocket for an FXR I can borrow for the weekend? I won't be able to get one before Saturday.

Yep I have one you can borrow, can hide it for you at work in albany if you like.

**chrisc** · 7th May 2014, 22:35

You're a ledge Henk, thanks. Will message you.

**chrisc** · 7th May 2014, 22:43

I've been nerding out a bit lately on gear ratios on the GP125 but for those interested, FXR gearbox ratios are:

Primary reduction - 3.5 (70/20)
Final reduction - 3.428 (48/14)

1st - 3.000 (33/11)
2nd - 1.857 (26/14)
3rd - 1.368 (26/19)
4th - 1.095 (23/21)
5th - 0.923 (24/26)
6th - 0.800 (20/25)

**kel** · 7th May 2014, 23:14

Originally Posted by chrisc

compared to your suggested 14/47 being 3.36

That would give you a top speed of 153kph. Might be a tad tall for the FXR.
The KE is geared for, wait for it, 153kph!

**Pumba** · 7th May 2014, 23:17

I only ever ran a 13 at taupo (came out of Rich's tool box). But the. I am a fat prick with a slow bike so what would I know.

**chrisc** · 7th May 2014, 23:21

Originally Posted by kel

That would give you a top speed of 153kph. Might be a tad tall for the FXR.
The KE is geared for, wait for it, 153kph!

What tire rolling radius is that using?

Originally Posted by Pumba

I only ever ran a 13 at taupo (came out of Rich's tool box). But the. I am a fat prick with a slow bike so what would I know.

And I still have a hard time passing you though

**kel** · 7th May 2014, 23:24

Originally Posted by chrisc

What tire rolling radius is that using?:

circumference of 1920mm.

**chrisc** · 7th May 2014, 23:33

I used 300mm as the rolling radius based on a measurement of the tire but that would imply a circumference of 1,885mm which doesn't seem right from tire manufacturer measurements.
You must be using 12,500rpm in your calc.
I was using 11,500-12,000 based off this graph and not hitting the limiter each change