Stupid RF900 Mikuni Downdraught carbs - require expert advice

**riffer** · 23rd February 2007, 10:21

Originally Posted by F5 Dave

Crumbs, the slide has worn as well! Hadn't considered that they were plastic too. Could have sworn mine were ally coated black & there was some ally exposed on the load bearing surfaces. Maybe I dreamt that.

You're dreaming mate. It's some kind of really hard plastic, almost bekelite-ish.

**wots it do mister** · 23rd February 2007, 11:18

If you wanna go plastic try uhmwpe (ultra high molecular weight polyethylene) pronounced umpfe has high abrasion resistance & impact strength deisgned for sliding applications but you may have to find a
end user to see if they had any off cuts & if that dosn't work its also food
safe so you could allways use it to scoop your yoghart.

**riffer** · 23rd February 2007, 11:22

Found some replacement carbs.

Just have to wait till payday to buy them.

**Eurodave** · 23rd February 2007, 11:24

Originally Posted by Motu

I'd put a couple of DCOE Webers on it.....

If theyre downdraughts hes after Id use a pair of Weber DCNF's ala Ducklattery Paso etc

**F5 Dave** · 23rd February 2007, 11:28

Not a bad first post, thanks for recommendation, cool, if a little unwieldy handle.

Eurodave that's just a gross Icon

**Eurodave** · 23rd February 2007, 11:34

Originally Posted by F5 Dave

Eurodave that's just a gross Icon

Yes,& thankyou for noticing,but it is quite fitting for this forum & the amount of excretia posted

**Fatjim** · 23rd February 2007, 12:20

Originally Posted by riffer

I hate you James.

Bike killer.

Now who's bike is quite!

Get well soon.

**F5 Dave** · 23rd February 2007, 12:54

Quite what?

**riffer** · 23rd February 2007, 13:01

Nah - he meant quiet.

We had a chat the other day at the Melling lights about how his bike was too quiet, and I told him if he gave it a bit of herbs I'd listen from behind and give him an opinion of the sound.

Of course though, he's so old, fat and slow it got boring and I had to leave him behind after a while to do some proper fanging through the traffic.

**Fatjim** · 23rd February 2007, 13:12

yeah I meant quiet. I still do.

**vagrant** · 24th February 2007, 15:07

Just for interests sake, how many K's has your RF done?

**crazybigal** · 24th February 2007, 15:53

this may be of some help to you
http://www.factorypro.com/jets,needl...pilot_jets.htm

**riffer** · 24th February 2007, 16:00

Originally Posted by vagrant

Just for interests sake, how many K's has your RF done?

More than any other RF I've ever seen. 101,000.

Originally Posted by crazybigal

this may be of some help to you
http://www.factorypro.com/jets,needl...pilot_jets.htm

Yep. Spent a bit of time on factorypro's website. But the thing is, I can spend up to $1200 rebuilding the carbs, and I still haven't fixed the main problem - the case of the throttle slide holders, which you can't buy new. Now I could go down the rapid prototyping route, but its going to cost a lot more than $500 to get four new ones designed and CNC'ed.

I've got a pair of carbs coming, which have less than 30,000kms on them, for less than $500.