Question time

Metalface · Post by **Metalface** » Sun Mar 08, 2020 8:57 pm

Hello, yesterday I accidentally bought a 1990 exup, its streetfightered so it has bits missing. I'm leaving it as a streetfighter but I have questions.
Should it have a reserve switch like the RU, it doesn't seem to have one?
It needs tyres, what tyres are people using?

Ta.

Post by **Stig** » Sun Mar 08, 2020 11:20 pm

Yes it should have a reserve switch

And it should have tyres

Post by **nugget** » Mon Mar 09, 2020 10:13 am

Stig wrote:

And it should have tyres

Last year I was running Bridgestone S20 Evo's and managed to get nearly 6,000 miles out of them and that's with using various speeds.

After talking to a few riders last year who we're running Bridgestone S21's. They say it out performs the S20 with lots more grip and harder wearing too.

That's what I'll be fitting at the end of this month ready for the sticky summer tarmac.

Metalface · Post by **Metalface** » Mon Mar 09, 2020 5:01 pm

I think I spotted a useful answer in that lot, I am doing well.

Post by **Stig** » Mon Mar 09, 2020 5:16 pm

Not like us to drift off topic

Metalface · Post by **Metalface** » Tue Mar 10, 2020 2:20 pm

Stig wrote:Not like us to drift off topic

That's true!

Right! I've got my carbs in bits to give them a clean, should I replace the emulsion tubes/needles etc while they're in bits or what, anything else I should do/replace also?

Oh and why does it have two filler plugs on the engine, sort of side by side?

Cheers.

Post by **nugget** » Tue Mar 10, 2020 3:31 pm

Get a set of these. Very good quality and cheaper too.

https://litetek.co/Carb_Kit_Yamaha_FZR1000_89-95.html

Metalface · Post by **Metalface** » Tue Mar 10, 2020 5:04 pm

Thanks, they look good.

I'm going to leave the emulsion tubes etc, I saw the price then checked them again and they look ok.

Teego · Post by **Teego** » Tue Mar 10, 2020 6:14 pm

Paul, after years advising others how to recommission their bikes you're going to have to practise what you preach. I'm looking forward to your stage by stage reports with Pix. Start with a big reveal of the bike emerging from its shroud.

Metalface · Post by **Metalface** » Tue Mar 10, 2020 8:27 pm

Metalface wrote:
Oh and why does it have two filler plugs on the engine, sort of side by side?

Cooeee.

Teego · Post by **Teego** » Tue Mar 10, 2020 8:52 pm

Metalface wrote:
Metalface wrote:
Oh and why does it have two filler plugs on the engine, sort of side by side?
Cooeee.

Looks like you're pissing - edit - whistling in the wind. Matron sent them to bed already.

YAMAEXUP · Post by **YAMAEXUP** » Tue Mar 10, 2020 10:36 pm

I've wondered for a while about why there's 2 oil filler caps. I modified one of them on my Exup-R & machined a spigot to go in the centre so that I could use it as a crankcase breather.

Keep an eye on the lower suspension nuckle bearings as well. They're needle rollers but when I serviced my one when I first bought my bike in '92 it was dry as a bone.

The rear shock on my bike was set up all wrong as well, with the rebound clicker turned out 15 clicks from hardest. Not realising this as I didn't have a manual, I did loads of work to the front forks & it still pumped down at the back end when the going got a bit....spirited. Once I bought the right preload adjsuting spanner I set that to maximum & the rebound clicker 2 out from hardest & it transformed the handling. This became even better when I changed the rear dogbones from 165mm between centres to new ones 5mm shorter at 160. This brought the rear up by about 25mm & essentially moved the centre of gravity forward, as well as giving me better ground clearance.

Looking forward to seeing the pictures. I no longer use photobucket but something else...which i've forgotten the details for. It's on here somewhere so i'll have to look it up

YAMAEXUP · Post by **YAMAEXUP** » Tue Mar 10, 2020 10:40 pm

Try this image host site

https://postimages.org/

Works for me

Teego · Post by **Teego** » Tue Mar 10, 2020 11:25 pm

Two things made big improvements to my Foxeye.
155mm bones lifted the rear end and COG. Shortened wheelbase and sharpened steering angle. The bike became really flickable instead of lazy long wheelbase.
Second thing was to change the gearing. -1 tooth at the front sprocket and +2 on the rear. This further shortened the wheelbase by pulling the rear wheel forward. Also closed up the ratios in the gears so it was snick, snick, snick, snick chasing the revs through the box. Acceleration became manic. Biggest problems were keeping the front end on the ground and not spinning the rear.
Happy days.

Metalface · Post by **Metalface** » Wed Mar 11, 2020 8:38 am

Thanks all.

I'll have a look at the rear shock too then, cheers.