Scooterotica

Anyone using/used one of these:-

http://scootrs.com/moreinfo.cfm?Product_ID=411

A general idea of their usability/ performance on a 200cc/clubman exhaust setup would be much appreciated.

I`ve seen a few on the track apparently made in Vietnam, they look well made, and I have not heard anybody nocking them.
Slides seem to made from copper, only problem might be getting jets for them

I believe jets are available from dirt bike shops

I had nothing but trouble with my 30mm oko "no go" carb ended up buying a 24mm oko" no go" carb just as much trouble but managed to cure the problem by cutting out a small plastic stopper under the float bowl. I'm running a stage 4 indian and a RS pipe, IMO don"t bother buying the cheap piece of crap! i won't bother buying a copy of acopy again." You get what you pay for" is a very fitting saying in this situation

>>cure the problem by cutting out a small plastic stopper under the float bowl

At one point the plastic float bowl covers did have a bit there that prevented the float from opening wider for some reason; after we knew about it we removed that ourselves if present. It didn't affect running, just running out of fuel! If any running issues, probably need to check the choke is seating well; maybe need a stronger spring. Lammy choke cables are stiff.

I would use the 24mm on a standard 200 with Clubman, not 30mm. We use them on most every scooter we do, Vespa and Lambretta up to TS1. Good and cheap carb. The Mikuni TMX35 is better on something like an RB225 though.

You can use any PWK parts in them, sourced anywhere, so quite easy to get spares.

They aren't made or available in Vietnam, btw. (The Keihin PWK kits coming from Vietnam that you see some resellers with are some weird Thai or Chinese PWK copies with plastic slides, round jets - not normal PWK hex ones - and really small inlet holes/valves that need to be redone or they can't flow enough. Also, you can't swap in most standard PWK spares, they don't fit. We offer those dirt cheap onsite with notes about them.)

Hope it helps.

I've been running a ScootRs OKO PWK 28/30 on my ugello 186 for 5.5k miles and now that I've got the jetting sorted I'm very happy with it. I have used jets/needles both from ScootRs and LTH in Germany although as has been said, they are available from other sources too.

The only complain I have is that for some reason my main jet needs to be WAY outside the norm. For a 186 (or even a 200), the main should be in the region of 115 to 120 but mine is a 138

That was arrived at after 2 holed pistons, the only explanation I can come up with is that the air corrector that the main screws into is different. On a delorto you would naturally concider the air corrector along with the jets/slide/needle but with the PWK it is implied that the only variables are the jets and needle. Yet the air corector does have a number stamped on it

Any though Randall, what number would the air corrector normally have on it

I would definately buy another one and agree that you probably don't need a 30mm on a standardish 200.

ive had 4 of these carbs now ranging from the 24mm to the bigger bodyied 30 mm that i now run on my ts1(this can be bored out to 35mm if needed as it has a 39mm spigot) great carbs i have never had a problem with mine easy to set up and good on fuel compaired to the dellorto vhsa 34mm better bottom end as well pulls top from 35mph niceley , i went for the larger bodied one due to the fact the internal passage ways are bigger and its able to flow more fuel so hopefully the need to drill or fettle things has been eliminated .
im not knocking scootrs as ive had nothing but 100% service from them but with the week $ and the high chance of paying import tax these carb kits can be bought in the uk for good money try corrado on here his site is justlambretta http://www.lambrettaspareparts.com/page19.htm

You can use any PWK parts in them, sourced anywhere, so quite easy to get spares.

Does this include the stuff from Thailand or Taiwan?

sponge bob wrote:I had nothing but trouble with my 30mm oko "no go" carb ended up buying a 24mm oko" no go" carb just as much trouble but managed to cure the problem by cutting out a small plastic stopper under the float bowl. I'm running a stage 4 indian and a RS pipe, IMO don"t bother buying the cheap piece of crap! i won't bother buying a copy of acopy again." You get what you pay for" is a very fitting saying in this situation

Exactly my experience with them. I had a 30 on a TS1 and a 24 on a Mugello. Bother suffered horrible fuel starvation problems. They were OK once I'd faffed about with them for ages, bending the floats, cutting off the stop in the bowl etc but it was a lot of grief. The choke spring was crap too which meant that you were never sure if the bl00dy thing was sticking on or not.

If you can put up with the hassle of getting them to work go for it, but if you can afford a Mikuni then I'd go for that every time.

I have no experience of the OKO copy PWKs although I have seen plenty of posts about enforced modifications to drillings and float bowls. I have run 2 of the bgm PWK copies and never had such problems. However, I would recommend using genuine Keihin jets and especially needles, and spend time making sure your choke works fine.