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DONE
Nov 8, 2016 22:55:29 GMT -5
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Post by JA-Moo on Nov 8, 2016 22:55:29 GMT -5
One thing I haven't seen discussed in the last couple of pages is the reversion waves. One of the main reasons for smaller jetting on a PP is the double fuel pick up (or more) from the reversion wave. This is why the jetting is always leaner on a PP. Plus one has to take into consideration on a PP, is the reversion waves causing stagnations in the mixture flow, which does kill flow speed.
But again porting, pipes, and other mods can change jetting in a different direction than normal also.
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Post by Walms on Nov 9, 2016 4:50:14 GMT -5
Ok, I'm running the leanest needles available from Keihin and close to one of the smallest Pilots, if what you guys are saying is true, you'd never get a piston port 500 to work correctly with 35 PWK's.
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DONE
Nov 9, 2016 5:58:18 GMT -5
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Post by shiloh on Nov 9, 2016 5:58:18 GMT -5
What I did was used the h1 bodies, made some mods and stuffed h2b guts in. Original h1 carbs were designed for h1s, good bad or indifferent, thats how I see it. With a slightly modified engine, dencos and pods, h2 jetting and slides, made sense to me. Its not too far off from what Ivans provides. By approaching it this way I was able to use the factory set up, the bigger carbs dont fit well and require mods I just didnt want to do. Its a starting point and the bike ran, not great but it did hold an idle so that tells me Im close. I really wont know untill I get it properly timed and take it for a ride, but its close.
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DONE
Nov 9, 2016 6:28:37 GMT -5
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Post by shiloh on Nov 9, 2016 6:28:37 GMT -5
One thing I haven't seen discussed in the last couple of pages is the reversion waves. One of the main reasons for smaller jetting on a PP is the double fuel pick up (or more) from the reversion wave. This is why the jetting is always leaner on a PP. Plus one has to take into consideration on a PP, is the reversion waves causing stagnations in the mixture flow, which does kill flow speed. But again porting, pipes, and other mods can change jetting in a different direction than normal also. I concidered this affect and was planning on using the factory inlets and a big filter. From what I understand that should allow for better uninterupted velocities in the intact cercuits. I also read that cylindricle pods work better than cone shaped ones? Idk, it was appearant that after putting the pods on the run up was better. I know this suject could result in a hudge pro and con discussion, but too me, longer equal lengthed intakes makes sense as far as the pp inversion wave is concerned.
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pk
2nd Gear
Posts: 77
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DONE
Nov 10, 2016 14:00:08 GMT -5
Post by pk on Nov 10, 2016 14:00:08 GMT -5
One thing I haven't seen discussed in the last couple of pages is the reversion waves. One of the main reasons for smaller jetting on a PP is the double fuel pick up (or more) from the reversion wave. This is why the jetting is always leaner on a PP. Plus one has to take into consideration on a PP, is the reversion waves causing stagnations in the mixture flow, which does kill flow speed. But again porting, pipes, and other mods can change jetting in a different direction than normal also. I concidered this affect and was planning on using the factory inlets and a big filter. From what I understand that should allow for better uninterupted velocities in the intact cercuits. I also read that cylindricle pods work better than cone shaped ones? Idk, it was appearant that after putting the pods on the run up was better. I know this suject could result in a hudge pro and con discussion, but too me, longer equal lengthed intakes makes sense as far as the pp inversion wave is concerned. Look at my video here and you can see the cloud of fuel being spit back out of the carbs. Some day I might film this while riding to see if it disappears when getting on the pipe.
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Post by shiloh on Mar 24, 2017 18:31:06 GMT -5
So, seeing as how this project is now drive-able, still hammering out tuning issues, I decided to weigh it. full oil tank, trans oil and 1/2 tank of gas, 352lbs, that`s 17lbs lighter than the s2 I`d estimate the gas and oils probably weigh close to maybe 15lbs, that gives a dry weight of roughly 337lbs. I don`t think I could have got it much lighter using what I had, and I can`t afford magnesium alloy. I`m happy with that.
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DONE
May 13, 2017 5:10:32 GMT -5
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Post by shiloh on May 13, 2017 5:10:32 GMT -5
Its been a while, but I think Im done now. Started cobbling this bike together oct 2015, might try to get the safety done this week then start riding it to see what brakes, lol. The first couple shake down runs are always nerve wracking. Dont laugh but I gave up on the h1 carbs and got a set of oko's from Midatlantic trials, cheap keihin knock offs, the owners been very helpfull in supplying a hand full of jets and helping me dialing these in. He's keen on knowing how this works out on a kawi triple. He's offering these as cheap upgrades and has had good results on many bikes from trials, motocross, and road machines. These carbs are tiwanese not chinese, he said the chinese ones are junk, untuneable. The oko's are basically kiehins and use their brass. Im happy with the results so far, and in the end if these dont work, I can trade up to the next bigger carb, and so on. That is good after sales support and its pretty hard to find that these days.
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Post by Walms on May 13, 2017 6:09:57 GMT -5
Nice to hear you found a source for real OKO's I gave up! Where, what sizes are available and how much? S'il vous plaƮt
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DONE
May 13, 2017 7:28:36 GMT -5
Post by shiloh on May 13, 2017 7:28:36 GMT -5
Go to www.mid-atlantictrials.com, Roger`s a good guy and cares about performance and one of few that believes bigger isn`t always better, why burn more gas than required, or slap big carbs on just to jet down to make basically as a smaller sized would work, use the size that best suits the application for the performance that you require. I`m starting with k101 28mm D slides, He believes they will work best for all around street drive-ability, but if I want more top end and less mid, go to 30`s.(he said swap outs were no problem, just shipping costs) I`m not out to win any races I just want the bike to run well.
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DONE
May 13, 2017 7:32:33 GMT -5
Post by shiloh on May 13, 2017 7:32:33 GMT -5
Sync`n the carbs then out for a run, I`ll report back with the initial results.
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DONE
May 13, 2017 13:20:06 GMT -5
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drewski likes this
Post by shiloh on May 13, 2017 13:20:06 GMT -5
So just got back from a 50km run, not terrrible, still a little rich down low and a little burbly pushing through 6 grand, was running 5-6k on the tach cruising about 60, good strong midrange pulled good up hill. Im close, plugs are a little dark but not in a hurry to push too hard as its still braking in. Happy with it so far.
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DONE
May 13, 2017 15:53:11 GMT -5
Post by drewski on May 13, 2017 15:53:11 GMT -5
So just got back from a 50km run, not terrrible, still a little rich down low and a little burbly pushing through 6 grand, was running 5-6k on the tach cruising about 60, good strong midrange pulled good up hill. Im close, plugs are a little dark but not in a hurry to push too hatd right as its still brraking in. Happy with it so far. Sounds like you're a winner!
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DONE
Jun 10, 2017 12:05:39 GMT -5
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zambia likes this
Post by shiloh on Jun 10, 2017 12:05:39 GMT -5
Today was the first real ride, about 1-1/2 hrs cruising and pushing up the speed a bit. Transition is seemless on and off the pipes, no real kick in the pants but you can feel them working, pulls real hard. With the S2, its like hitting the after burner switch, boom. The tuning is pretty good, still a little rich off throttle but nice and clean up high. Monitoring the temps, never got above 275f. Handling is real good, tracks no hands perfectly, suspension still needs a litlle dialing in, and cornes like the S2, pretty nimble. Happy happy happy, as far as comfort goes.....,nope, getting a little old for the crotch rocket scene. All in all it's a one off keeper, time to start looking for a comfy cruiser. Done and done. Cheers.
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DONE
Jun 10, 2017 12:17:23 GMT -5
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Post by givr on Jun 10, 2017 12:17:23 GMT -5
Great news Perry. You bringing it to Paris?
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DONE
Jun 10, 2017 13:30:38 GMT -5
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Post by shiloh on Jun 10, 2017 13:30:38 GMT -5
Great news Perry. You bringing it to Paris? Yup
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