Throttle Lag until 2000 RPM

[VMAXXIMUM]

Parminio your posts generally adhere to a theme, negativity and insults. Your last post is just more of the same. If you can’t understand it or you don’t agree with it it’s nothing but insults and negativity You know Steve-o and I were just talking a few weeks ago that we hadn’t seen any posts of yours in a while and we hoped you were all right. Of course in the last couple weeks that you’ve been active it makes me pause and consider the old adage “be careful what you wish for”. In another thread with dream V4 you complained that the moderators had edited your posts. Perhaps if you weren’t so insulting and stoped resorting to name-calling your posts would not be censured.

 

[Parminio]

It's fact. He may be a master mechanic but most people aren't. The point isn't how great he is or isn't. It's about the typical do-it-yourself mechanic.

If you're taking offense then maybe you're the one with the issue.

 

[VMAXXIMUM]

The point you say, the point is that he was just explaining what he’s done. Since when did this forum become master mechanics versus non-master mechanics. He related what he’s done and you insulted him. That’s the point. The golden rule

 

[Parminio]

The point you say, the point is that he was just explaining what he’s done

Ahem:

I've been turning wrenches, on a vmax , longer than you've been a scientist.

I understand what he's done. My point wasn't him. My point was this guy:

I've never tried enlarging the pilots. I've thought of it, but I haven't done it. If I did choose something like that, I would replace the pilot jet with the next size larger instead of using a drill to enlarge it.

THAT is who I posted directly to. My point being, once again for clarity, that it's not worth risking to drill out a jet and risk a mistake when you can simply buy them and be done with it.

Then the two of you got all bent out of shape over it and start talking down to me like I'm some illegitimate child of yours. Why, I honestly have no idea.

 

[Fire-medic]

Can we please put the sniping behind us? I've edited some posts to remove what I considered material which could be considered offensive to someone. I really am not on-here to referee disputes about who said what, but suddenly that is what the role of a moderator has become.

If someone has a difference of opinion with a post, there are ways to simply state your alternative without what the original party could consider insulting, a slight, or other behavior with-which another member could take-issue.

I understand some people have strong views on things, that the First Amendment is a right of us in the USA, but please take a minute to consider what you're posting, before hitting, 'enter.' For the longest time, we've been able to avoid this type of conflict, I hope that the recent/current trend of back-and-forth arguments will end. In this, I'm pessimistic because some will choose to continue their behaviors regardless of anything which I, other moderators, other members, or the Administrator may say. Let-us return to being able to discuss motorcycles and garage/shop-related topics without the vitriol which has recently found a footing here.

We can have differences of opinion in a positive manner without resorting to insults, attacks, and profane comments, all of-which I've recently had to deal-with as a moderator. Yes, I think the 'Golden Rule' has a place in civil discourse, if you have a doubt about how to-proceed, it serves as a good guide. Other moderators and I will continue to monitor posts, and I hope the negativity ceases. As Donald Sutherland said, "there you go, more negative waves, have a little faith."

 

[MaxMidnight]

The smallest metric drill bit I've come across is .40mm, which is the same as the 40 jet.

You can get them down to 0.05mm and then bigger in 0.01mm increments.
Note that the smallest come in a pack of 5 as that is probably how many you would need to drill a hole!

 

[Parminio]

You can get them down to 0.05mm and then bigger in 0.01mm increments.
Note that the smallest come in a pack of 5 as that is probably how many you would need to drill a hole!

Still, the whole idea of using a hand drill with the carbs still on the bike to use a bit that skinny trying to hold a perfect angle while using perfect pressure so you don't bow the bit...

Just seems a whole lot of risks vs. just buying jets and replacing them.

 

[02GF74]

smallest come in a pack of 5 as that is probably how many you would need to drill a hole!

Any application that requires drilling sub 0.5 mm has to be pretty specialised and you would expect needs precision equipment. There are recommended cutting speeds for different metals, I've not done any calculations but would not be surprised that for those drill sizes it is in the region of tens of 1000s of rpm, something like a dentist's drill springs to mind.

It's a bad idea to use a hand drill to do the pilot jets, a lathe would be better, but drill bits of that diameter are quite flexible and as drills follow the hole, it may well be doable with great care and luck.

 

[Parminio]

Any application that requires drilling sub 0.5 mm has to be pretty specialised and you would expect needs precision equipment. There are recommended cutting speeds for different metals, I've not done any calculations but would not be surprised that for those drill sizes it is in the region of tens of 1000s of rpm, something like a dentist's drill springs to mind.

It's a bad idea to use a hand drill to do the pilot jets, a lathe would be better, but drill bits of that diameter are quite flexible and as drills follow the hole, it may well be doable with great care and luck.

Which was my point from the very beginning.

 

[user 16790]

an 'old school' mechanic at a local bike shop used to have a set of jet drills, he would use them by turning them with his fingers

 

[Balt]

I had the exact same issue. Turns out my carbs were out of sync. After properly syncing it's like a different bike.

 

[sdt354]

an 'old school' mechanic at a local bike shop used to have a set of jet drills, he would use them by turning them with his fingers

That's how it's been done by many.

 

[Parminio]

an 'old school' mechanic at a local bike shop used to have a set of jet drills, he would use them by turning them with his fingers

With my hands that would be impossible. It's all I can do to get the little white cap off the half n half carton.

 

[dannymax]

Pilot jets are simple to clean and enlarge slightly with the proper tools...I seriously doubt Steve-o was using a Bullard turret lathe or Kaukauna radial drill to perform this delicate procedure. Were ya Steve-o?

 

[Zeus36]

I would not recommend drilling jets if you can get the size you need. If you do decide to drill, you should use a pin vise and a carburetor jet tuning drill set. Drilled holes are not perfectly round and for precision work, need to be reamed to the correct size. Both operations should use lubrication for non ferrous metal. Wax can be used for brass. There is also a radius on the entrance and exit of the jet. If this radius is disturbed by drilling, you may have affected the performance of the jet. Also, drilling in brass tends to grab the bit.

https://www.ezbore.net/category-s/1882.htm

 

[Fire-medic]

The E-Z Bore tools are interesting. Lots of things to play-with. For the stuff I do, a pin vise, cordless reversible drill, and a floor model drill press accomplish nearly-anything I need to do. If it takes more-than that, off to the machinist I go.

Look at Zeus36's link, the E-Z Bore stuff may appeal to you.

 

[DreamV4]

there are a few holes next to throttle edge. One of them will show end of pilot screw if you turn it comepletely in, this hole provides fuel at idle. There are also 3-4 holes pretty close from first one, they provide fuel for partially open throttle (2-10 degrees?) People don't clean them.

 

[sdt354]

Pilot jets are simple to clean and enlarge slightly with the proper tools...I seriously doubt Steve-o was using a Bullard turret lathe or Kaukauna radial drill to perform this delicate procedure. Were ya Steve-o?
View attachment 78574

Lol, that's the one Danny.

 

[sdt354]

Pilot jets are simple to clean and enlarge slightly with the proper tools...I seriously doubt Steve-o was using a Bullard turret lathe or Kaukauna radial drill to perform this delicate procedure. Were ya Steve-o?
View attachment 78574

Darn Dann-o, now the secret to opening a jet a tad is out. This is the science I was trying to hide from the crude old school pin vice users.

 

[dannymax]

Darn Dann-o, now the secret to opening a jet a tad is out. This is the science I was trying to hide from the crude old school pin vice users.

Sorry Steve-o, at least I didn't tell them you actually use a coal fired 48" Pratt & Whitney engine lathe.....oops!