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Post by Deleted on May 27, 2021 11:24:07 GMT -5
Carb Tuning Update: switched pilot back to 27.5 on stock carb. Needle still at full and main at 105. Temps looked great riding around town with the 25 pilot, but once I got out on a long 6 mile stretch temp climbed way up to 380+. Also noticed hunting and surging at idle while trying to cool it back down. Got her back home carefully with a few stops along the way to keep cool.
Still moving so didn't have space or time to setup the PWK yet. Swapped out 27.5 pilot and re-tuned. Sputters a little with the enricher on but it idles steady. Rode around town for a bit and every thing seemed good, so I headed back out to the stretch and opened 'er up.
No problems whatsoever. Ran smooth and easy. Temps stayed around 280-290 and she cruised easy at 40-45. Amazed at the change. Took three more runs to be sure. Everything is great. Pilot is supposed to be up to 1/8th but it is definitely much more than that.
I do know this stock carb is a bit too small for the 103. I can definitely feel it at 50+ when the engine really wants to open up, but there isn't quite enough juice.
Hopefully I can get the 21mm loaded on in the next few days, so engine can operate optimally, but for now, cruising to and from work, this works pretty well.
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Post by Deleted on Jun 10, 2021 13:06:19 GMT -5
There are days when I love the Adly beyond measure, and there are days when I wonder if the Herchee company is an evil syndicate masquerading as a Taiwan scooter manufacturer. Today it is the latter. Took the bike apart to do some work on the intake before mounting the OKO carb. I had bought a Gixal intake which may have been my first mistake. Got the bike apart, took the old intake off and dropped the Glixal. Everything seemed okay. As I was screwing it in, snap and snap. Two of the tabs cracked. I wasn't torquing hard and didn't feel any binding as I went. Well crap. Figured I could do a fix on the fly with a little motoseal. Wasn't terribly worried, just irked. Got everything tightened down and grabbed to top half of the bike. As I'm trying to get things line up, I notice that the new intake is too tall for the motor mount. Adly designed the mount and intake to fit tight and there's no wiggle room. Double crap. Put top half back to the side and unbolt new intake. Pull new intake out, put old intake back in. Shit.... Cut the two nubs off the end of the old intake and it fight right inside the boot, flush to the rim. Okay, may this will work. Put the top back on the bike and button up. Everything looks good so I get the throttle linked up to the OKO. No issues there. Everything fits right. Throttle response on slide is great. Installed the OKO into the boot with the old intake and all seems well. Went easy on back clamp because I didn't want it to deform the intake. Everything snug. Nothing moves. Tightened up the front clamp, all looks good. Now all I have left to do is re-route the airbox. The only issue here are the foot pegs. There is just enough room for the rubber elbow, but I may do away with that in favor of sone flexible hose clamped directly to the carb. So long story short. Custom intakes don't really fit on the Adly RT50. The engine mount just won't allow it. The foot pegs do not leave much room for routing a rubber elbow from the carb, and re-locating the airbox is an absolute must. There just isn't enough room around the pegs. Everything on this bike fits really tight. Herchee did not leave a lot of room for customization. All that said... I love my bike. 😂 really right fits here, but it's in there! in this last photo, you can see how the pegs limit where you can orient the elbow.
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Post by Deleted on Jun 10, 2021 21:33:39 GMT -5
I came here to vacuum pools and ride scooters, and I'm all out of pools. 🤣 Strange airbox re-routing contraption complete. All credit to Brent. It's his design. Just wish they had all black. This two tone thing looks like a pool vacuum. Lol
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Post by Deleted on Jun 11, 2021 16:03:36 GMT -5
YEAH!! Who's ready to do some vacuuming! Lol. Everything is hooked up and now working on tuning. Got a 125 round jet in. The 127 hex was a bit sputters. Needle at mid. Factory stock at 4th was just too rich. 46 idle in currently. Working on getting that part sorted. Think I might end up at 48, but we'll see. Going through tests in between rain showers.
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Post by Deleted on Jun 11, 2021 20:40:51 GMT -5
There was definitely some kicking and cussing out there while testing, but also some learning. The idle jet was giving me hell, but I think thats because everything above it was so far off. Got down to 115 on main, and lowered the needle to position 2. Idle is at 48, but that is way too rich now. Getting rpm dips when I come off the throttle, so I think 46 might have been right.
Learned a pretty powerful lesson about main jets. I went a little to light putting in the 115 and it shook loose while I was adjusting the idle. Bike immediately went rough and blubbery on me then shut down. Could not get started and the times I managed to get it going, would not hold an idle and I had to lay on throttle. Needless to say, shit loads of smoke and slight panic on my part.
Went through everything I could think of. Set idle back to where it was. Nope. Check sparkplug, maybe it's fouled. Nope. Prettiest damned plug I've ever seen. Beautiful cappuccino brown. Decide to drain carb and check jet. Unscrewed bottom of carb and hear a rattle. There's my main jet sitting in the bottom of plug. Screwed it back in tight and put the plug back. Bike fired up on first kick and purred like nothing had ever happened. Lesson learned. Bike will not run without the main jet, and the main plays a significant role in idle.
Well shit... That only took up the last 15 min of daylight. Still, I took her out to the street to test the 115 and the lowered needle. All I can say is POWER JET. Holy crap. I felt that thing kick in just above half throttle and the bike took off. Damn! This thing flies now. Temp around 190-200.
That's all I've got for today. I'm a take the win and sort out the idle jet tomorrow.
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Post by repherence2 on Jun 12, 2021 15:16:06 GMT -5
Well shit... That only took up the last 15 min of daylight. Still, I took her out to the street to test the 115 and the lowered needle. All I can say is POWER JET. Holy crap. I felt that thing kick in just above half throttle and the bike took off. Damn! This thing flies now. Temp around 190-200. That's all I've got for today. I'm a take the win and sort out the idle jet tomorrow.
the POWER JET hits like VTEC!!! lol. i didn't realize you had a power jet carb. in my experience, it's like the Main Jet is for 1/3 to 2/3 throttle range and the needle is like 1/4 to 1/2 throttle range. it seemed like the Power Jet shifted all the overlap points to the left when compared to tuning a non power jet carb. i felt like the power jet affected the range between 2/3 and WOT. my WOT temps would decrease, you could see it go down on the temp gauge.
with temps around 190-200 on an air cooled engine, sounds like you got lots of room to lean it out, got at least 150 degrees more of headroom. have you tried a 110 or a 112 main jet. ...maybe even a 108?
last thing, what is the diameter of the outlet on the Carb that you are running? i was wondering how you adapted it to the stock looking intake manifold. i was wondering why you weren't running a CT intake manifold, especially with the displacement you have, it seems like it would be a bottleneck. plus the CT comes with a bigger reed valve assembly.
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Post by Deleted on Jun 12, 2021 18:07:37 GMT -5
repherence2 Seems familiar This is the intake I was referring to previously. Doesn't fit underneath the engine mount. It sits about an inch or so too high. Sucks for sure. 2nd photo gives you an idea of what I'm working with on clearance. As you can see, it's extremely tight in there. The engine hanger goes right on top of the intake. So I put the stock intake back on, clipped off the alignment nubs, and lightly clamped the rubber boot to it, so it wouldn't slip off, but not shrink the tube. Then I hooked up the OKO 21mm to the boot. the diameter of the intake is a little smaller but not by much. I may be able to get away with it. Then again I may not. Am currently searching for lower profile options that might be better. Worst case scenario is that I'll have to build something. How terrible right? 😉🤣🤣🤣
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Post by Deleted on Jun 12, 2021 18:32:34 GMT -5
As for jetting. I'm finally at the non sputter point on the main and needle. I completely agree regarding the shift of all positions. That power jet indeed kicks in around 3/4 and it kicks like a friggin mule. Now that I'm not longer sputtering on the upper end, I want to start narrowing down the idle jet. Its currently at 48 and RPMs drop after blipping the throttle which seems rich. I can also unscrew the air screw almost entirely. 42 was definitely too lean. Had hunting and surging going on. Pretty sure 46 is about right. Unfortunately the rain has kept me from further tuning today. Gonna mess with it in the morning before work. Hopefully the rain will hold off.
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Post by Deleted on Jun 12, 2021 18:48:42 GMT -5
You know. I could have avoided a lot of this if I had only learned to read! 🤣🤣🤣🤣 49ccscoot.proboards.com/thread/24505/adly-rt50-intakes?page=2Seems like we've all gone down this road before. I had that thread bookmarked and got ahead of myself when ordering the part. Didn't go back and re-read it. Right. Make something it is!
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Post by 190mech on Jun 12, 2021 19:08:28 GMT -5
It looks like you have done a fine job of adapting that carb to fit in a tight space!!
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Post by Deleted on Jun 12, 2021 20:02:56 GMT -5
190mech Thank you sir! Come too far on the RT to give up now. Lol. I found this Doppler intake, but can't seem to find dimensions. Looks low, but not sure if it will fit. My other plan if the current setup doesn't work out is to take an unrestricted 23mm ID rubber intake and sleeve it so I can get everything clamped down tighter without deforming the tube. Areas of consideration are that the sleeve must be fuel resistant, can't restrict ID below 21mm, must sit firmly inside the intake so it won't slIp and not so tight that it cuts the rubber.
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Post by Deleted on Jun 14, 2021 22:40:48 GMT -5
Finally got a break in the rain and am getting the pilot sorted. 46 with 2 turns seems to be working well. Pipe loads up a little bit, but acceleration is super smooth and powerful. Front wheel wants to raise up a little. Not mad about it at all. It does feel like pipe loads up a little bit, but everything is pretty good.
I do have a 45 pilot that I might mess around with. Need to get a bit more work in with the 46 to be sure. She idles nice and steady at 1550-1570 rpm. Off throttle rpm drops are no longer and issue. She might go to 1500-30 for a sec but she sets back to 1550 and doesnt surge.
The power jet is interesting. It seems to kick in right above half and really opens up around 35mph. Ride is nice and smooth and I'm cruising 45mph with ease, and there is a significant amount of power left on the table. I do have a couple different size power jets, but I don't think I'm gonna mess with it.
Needle is right. From 1/8 up to half, no issues, no sputters and no temp spikes. That just leave the main, and I think I might be able to drop a hair down to 110 from 115. There is just the slightest hint of sputter or 4 stroke right at half-3/4. I can't really feel it, but I can just barely hear it. Gonna get a couple more runs in and then drop it down.
All I'm all I am beyond impressed with the setup. It's not race material, but with the addition of the 21 PWK, it is smooth and powerful. Perfect for daily driving or quick dash to the store. I do have the Doppler intake on the way. It was on sale at Treatland.tv for 15 bucks. What the hell. Buy the ticket, take the ride.
I think the last bit is just going to be a set of street tires. The Kendas that are currently on are nice but I need just a bit more grip. After that, I think I've got the stopping point for mods on this bike. Well... Mechanical mods. Probably gonna paint, and The Brick is clamoring for attention as well.
As always, A massive thank you to everyone here that helped me along and offered advice, tips, reminders, and This project would not have gone as well as it had without the benefit of your experiences. Thank you again.
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Post by repherence2 on Jun 15, 2021 0:26:06 GMT -5
Rtnifty thanks for sharing your build with us!
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Post by aeroxbud on Jun 15, 2021 7:09:46 GMT -5
The Michelin 2CT are excellent tyres. That's why so many use them.
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Post by Deleted on Jun 15, 2021 18:12:07 GMT -5
aeroxbud Good call, sir! I was looking at the Michelin City Grip 2. They're a bit scarce lately. Definitely want something with good grip and solid performance in wet conditions. The RT has almost no weight to it, so it can get pretty loose on wet roads. I have the Kendas Kozmiks on The Brick, but I'd like a little bit higher speed rating for the RT. The Kozmiks really are fantastic tires though. Am a big fan.
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