CV Carb mod to replace plastic washers, which locate under needle circlip that wear out.

[CockneyRick]

BST38's have the step  

[clivegto]

On 11/16/2018 at 1:11 PM, Ben Slabby said:

Afaik SI Francis does sets of these to order too. 

@Wescooley19told me he had stopped making them.

[SFC]

i will have a set please , still got original drawing's but never found or got round to asking anyone to make a set , let me know when payment is needed

[nopokewithoutsmoke]

On 11/16/2018 at 5:04 PM, jonny1bump said:

That is good question not actually sure. Would need have look inside see if step is there first, if so would say so but pays to measure.

Ok. I'm thinking of Srad carbs, so I'll have a look at them during the week and see if they're the same.

[wsn03]

50 minutes ago, SFC said:

i will have a set please , still got original drawing's but never found or got round to asking anyone to make a set , let me know when payment is needed

Please vote on.the poll and stick your name down 

Thanks

[Ben Slabby]

4 hours ago, clivegto said:

@Wescooley19told me he had stopped making them.

Ah, fair enough. They're fiddly on a manual, I can see the attraction in setting up on CNC and just letting it run. 

[zedhead]

I don't recall the 36 or 38 that we used on the Slimfast Bandit having steps on the spacers, but I could be wrong... if the 36s that're are currently fitted have them, I'd be interested in a set.

 

[jonny1bump]

 D. you have look inside carb tops see how it looks.

Edited November 21, 2018 by jonny1bump

[jonny1bump]

So see pictures below. These four plastic washers were on same set of carbs at same time. You can see how different they wear some spin, some grove, some I turned over to get another year out of them. These were genuine Suzuki items.

So you spent the hard earned on dyno got it set up right, year later running not quite right very frustrating especially when your really pushing so you really can feel those changes. Well look at pics below no wonder along with oval 'd emulsion tops.

 

Edited November 21, 2018 by jonny1bump

[jonny1bump]

[jonny1bump]

[jonny1bump]

The plastic wearing actually leans it out hiding fact emulsions have gone oval causing rich spot. Just completely messes it up. Put new items it just feels like new bike as long as you wrote your original set up down. That sounds a contradiction with rich and lean and it is, sometimes your lucky as wear balances itself out but most time you end up chasing your tail unless you replace with new.

The 40 mm cvs are so so sensitive I'm sure just just touching them makes a difference hense why so against not having air box on cv equipped bikes. Ok for going pub and back maybe to show trailer queen paint job. I can say that I've had some wild paint in the past but not trailer queen lol.

You can get the 40s and air box to flow really well only in later years did I switch to get more.

It's all about that finesse.

Edited November 21, 2018 by jonny1bump

[jonny1bump]

[jonny1bump]

I must add measure needle sticking out of bottom of slide. 

When you use my design measure again.

If different alter circlip position to get correct measurement.

 If plastic is worn then measure when and again take this into account with needle height.

Edited November 21, 2018 by jonny1bump

[snoorder]

Seems I could use a set as well. Bought new plastic ones (original Suzuki) but no step there... 

[Kurf]

Might be asked already : do they fit BST36? Plastic rings (original) have no step in them.

[CockneyRick]

2 hours ago, Kurf said:

Might be asked already : do they fit BST36? Plastic rings (original) have no step in them.

Whilst the rings don't have the step, the diaphragm slides most likely do. Shine a torch down the hole & have a look to see the step  

[snoorder]

Like so 

[Nelson]

Those alloy ones look fantastic, how do you sign up for them?

[Nelson]

Sorry, I’ve already done it, must have been on fire that night. 

[jonny1bump]

Nelson post request on carb mod  washer thread so they altogether.

[Nelson]

Cheers Jonny1, I’m in. 

[SFC]

mine arrived yesterday ,  no step in 36 bandit 12 carbs but will come in handy on the gix when finished ,  thanking you

 

[jonny1bump]

Cool no worries. They must realised with Bandit the issue.

[CockneyRick]

This is in no way a criticism, just an observation that i have passed on to @jonny1bump

I have fitted these to my BS38's & before, needle protrusion was at 61mm with clip in middle of 5.

After fitting, the protrusion was down to 59mm. So i raised clip to top notch of 5 & needle then protruded 61mm again.

 

My point was, has anyone had this when they fitted, or as J1 suggests, they were made the right thickness to stop this happening?

I will strip mine down again & double check it all, but chances of all 4 not seating correctly is remote. I can only think the step in 38's isn't as deep? 

Only way of really knowing would be to cut the slide apart, if my depth gauge won't fit