Excellent back to basics video Frank! The aforementioned nut on bolt for centerstand missing. Also wedding band may want to be pressed down over the washer and I noticed the black rubber seal on carb mouth looks to be not fully on. Anyway I really enjoyed this video. Thanks. Hey maybe you stumbled on an easy way to check your bikes over...just pan along with your camera and mooks like me will chime in.😂😂 oh, I could be wrong. Forgot to ask you..on the old carbs can you drill out the plug and tap it for the screw in jet like the premier? 0:35
I truly do not know if a Premier Pilot jet can be fitted into an older Concentric. I used to drill out the backside plug to the internal jets and clean the passages to the internal jets, but that was before the Premiers became available. Now I feel that new carbs are less expensive than the labor time spent trying to keep old carbs working.
Mk1 Amals use a 4 jet system.These systems are semi independant with a small degree of overlap as you change throttle positions.Apparently I have been teaching the wrong message to my auto students over the last 40 years!.
In my experience Mikuni don't seem to require the same attention as Amals. But, if/when their pilot jet gets clogged you have to drop the bowl to get to the jet. (Just as you have to do on 1968 and older Amals.) I have installed a lot of Mikuni conversions and they work really well. However, they are definitely visually not original and if "retaining the stock appearance" is important then two new Premiers are the answer. That's as fair and non-committal an answer I can offer. But, on the other hand, I gotta say I sincerely love the single Mik on my '74.
This may sound weird but I can't bring myself to describe how to make (reverse engineer) another person's product. I will say that before I found the cleaner shown in the video I used to make my own by stripping the insulation off a couple of inches off an 18 gauge wire and using a single strand as a jet cleaner. That's your starting point. Ride On! F.
My neighbor Richard. A retired computer guy like me, he's forgotten more about mechanical stuff than I will ever know. He's one heck of a good neighbor to have.
With respect guys ,the pilot circuit only provides a metered amount of gas and air for idle and low speed running.From approx. half throttle to full throttle opening this circuit has no effect.Suggest that you might like to download Bushman's carb tuning secrets which has a very good tuning & jetting chart covering circuit interaction and effective range of adjustment.
I disagree. The jetting is additive thru the full throttle range.. The pilot jets add to the needle jet which adds to the carb cutaway which adds to the main jet. Take any one of those away and the overall mixture suffers. Let's agree to disagree.
Disagree. All the jets affect all throttle opening ranges to some degree. That is why you start your tuning with the main jet and work your way down to the pilot jet. To prove the point, go clog up your pilot jet and see how bad it runs even at wide open throttle. I have proven this to myself many times over the 40+ years of rebuilding vintage bikes.
Yes, it would have been easier to clean the pilot jet on this bike by removing it. BUT, I mostly wanted to show how to clean internal pilot jets for folks (with bikes newer than 1968) who are not aware that pilot jets need cleaning, or even aware what pilot jets are, and where they are. F.
Remind me when I go to Tucson in November to get some carb cleaner!
Excellent back to basics video Frank! The aforementioned nut on bolt for centerstand missing. Also wedding band may want to be pressed down over the washer and I noticed the black rubber seal on carb mouth looks to be not fully on. Anyway I really enjoyed this video. Thanks. Hey maybe you stumbled on an easy way to check your bikes over...just pan along with your camera and mooks like me will chime in.😂😂 oh, I could be wrong. Forgot to ask you..on the old carbs can you drill out the plug and tap it for the screw in jet like the premier? 0:35
I truly do not know if a Premier Pilot jet can be fitted into an older Concentric. I used to drill out the backside plug to the internal jets and clean the passages to the internal jets, but that was before the Premiers became available. Now I feel that new carbs are less expensive than the labor time spent trying to keep old carbs working.
Thats a really pretty color on that Triumph tank.
Mk1 Amals use a 4 jet system.These systems are semi independant with a small degree of overlap as you change throttle positions.Apparently I have been teaching the wrong message to my auto students over the last 40 years!.
Looks like the centre stand lock nut is missing.
I think you're right. The center stand bolt on the left side of the bike doesn't seem to have the nut on it and is making its way out a little bit.
Yeah! I saw that in the video also. I never noticed it before. Just one more thing to do before I let the bike go. Thanks.
Convention says that the left side is when the rider is sitting on the bike.
True. Convention also says, "Lefty loosey, righty tighty, excepty when working up-side downy in the darkly." (Humor)
I wonder if the Mikuni on the Green Goddess requires the same level of attention as do Amals.
In my experience Mikuni don't seem to require the same attention as Amals. But, if/when their pilot jet gets clogged you have to drop the bowl to get to the jet. (Just as you have to do on 1968 and older Amals.) I have installed a lot of Mikuni conversions and they work really well. However, they are definitely visually not original and if "retaining the stock appearance" is important then two new Premiers are the answer. That's as fair and non-committal an answer I can offer. But, on the other hand, I gotta say I sincerely love the single Mik on my '74.
Hi Frank, great tip for the jet cleaning. What size is that drill bit you used if I want to make my own? Thanks, Rob from Wales UK
This may sound weird but I can't bring myself to describe how to make (reverse engineer) another person's product. I will say that before I found the cleaner shown in the video I used to make my own by stripping the insulation off a couple of inches off an 18 gauge wire and using a single strand as a jet cleaner. That's your starting point. Ride On! F.
Frank, who was the person sitting in a chair in your garage a couple video's back?
My neighbor Richard. A retired computer guy like me, he's forgotten more about mechanical stuff than I will ever know. He's one heck of a good neighbor to have.
With respect guys ,the pilot circuit only provides a metered amount of gas and air for idle and low speed running.From approx. half throttle to full throttle opening this circuit has no effect.Suggest that you might like to download Bushman's carb tuning secrets which has a very good tuning & jetting chart covering circuit interaction and effective range of adjustment.
I disagree. The jetting is additive thru the full throttle range.. The pilot jets add to the needle jet which adds to the carb cutaway which adds to the main jet. Take any one of those away and the overall mixture suffers. Let's agree to disagree.
Disagree. All the jets affect all throttle opening ranges to some degree. That is why you start your tuning with the main jet and work your way down to the pilot jet. To prove the point, go clog up your pilot jet and see how bad it runs even at wide open throttle. I have proven this to myself many times over the 40+ years of rebuilding vintage bikes.
seems wud have been easier to remove pilot and clean than drill bit
Yes, it would have been easier to clean the pilot jet on this bike by removing it. BUT, I mostly wanted to show how to clean internal pilot jets for folks (with bikes newer than 1968) who are not aware that pilot jets need cleaning, or even aware what pilot jets are, and where they are. F.
@@fjdelmonte i got u,, good channel. i always watch..ty