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Molto Verboso
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Hi Mendozaram not there so a little difficult to know exactly but sounds almost like ignition is having trouble maybe not carb sputtering?
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mendozaram wrote:
So, in this vídeo. The setup is the same Drilled mainjet from the last vídeo But AC160-BE3https://youtu.be/39BtjyCBqnc
That sounds a little better to my ear, so I think you are on the right track. But, you can still hear splutter at WOT. The AC160 and BE3 are as lean as you would want to go on the air tube and the mixer tube, so nothing left to do now except start walking down the main jet. My advice is to order a range of main jets between 120 and 130 and be patient. Your scooter sounds like it will still be quite rideable while you are waiting.
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Shipped my PX150E to Gick to have this installed this weekend. Excited to see how it does.
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hibbert wrote:
Hi Mendozaram not there so a little difficult to know exactly but sounds almost like ignition is having trouble maybe not carb sputtering?
Hi Hibbert, hello @kowaslki, thanks again. I had installed a brand new BGM HT CDI/COIL when the VMC was installed. After your comment Hibbert, this morning i'd installed the HT CDI/Coil that was installed before the new one from BGM

Guess What? Look this one bellow

https://youtu.be/PXMyfUyj11U

Maybe , a faulty unit. I don't know if those HT coils from BGM limits RPM.

Currently running on ID 55/160 2.25 turns out
Main Stack : AC140-E3- MJ Unknow (bigger than 120, smaller than 130)
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Another good video Mendozaram sounds different. Maybe ignition trouble. Need for the jets to arrive and find the too rich point. Might try a AC120 now and moving forward. I have chased my tail a few times over a fouled spark plug.
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hibbert wrote:
Another good video Mendozaram sounds different. Maybe ignition trouble. Need for the jets to arrive and find the too rich point. Might try a AC120 now and moving forward. I have chased my tail a few times over a fouled spark plug.
Yes, i have to wait for the set of MJ. but the spluttering on High RPM it's gone after the HT Coil swap. I'm hating BGM for that 😆. And yes, now i'll try AC120 and see how the ride is.
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mendozaram wrote:
Guess What? Look this one bellow

https://youtu.be/PXMyfUyj11U

Maybe , a faulty unit. I don't know if those HT coils from BGM limits RPM.

Currently running on ID 55/160 2.25 turns out
Main Stack : AC140-E3- MJ Unknow (bigger than 120, smaller than 130)
Sounds much better. Good catch Hibbert. The good news/bad news is now you can/should start over on the main stack. I would begin with the AC120/BE3/MJ130 and take it from there.

I will add that now you have me questioning the coil on my own scooter. I've been getting what I thought was splutter despite a main stack that seems pretty lean compared to what others have been using. I see a new coil is only $25, so it is worth a try when scootering weather returns this part of the world.
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Kowalski wrote:
mendozaram wrote:
Guess What? Look this one bellow

https://youtu.be/PXMyfUyj11U

Maybe , a faulty unit. I don't know if those HT coils from BGM limits RPM.

Currently running on ID 55/160 2.25 turns out
Main Stack : AC140-E3- MJ Unknow (bigger than 120, smaller than 130)
Sounds much better. Good catch Hibbert. The good news/bad news is now you can/should start over on the main stack. I would begin with the AC120/BE3/MJ130 and take it from there.

I will add that now you have me questioning the coil on my own scooter. I've been getting what I thought was splutter despite a main stack that seems pretty lean compared to what others have been using. I see a new coil is only $25, so it is worth a try when scootering weather returns this part of the world.
i'll ask to 10pollici (i bough the Blue BGM HT Coil to them) whats the difference between the blue and the red one. The blue says ORIGINAL, the red one says PRO. Maybe the blue one limits the RPM.

Yes, i'll test the AC120... For mainjet i have to wait some time.
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Both are the same. Scooter Center marketing crap...
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Kowalski wrote:
...Sounds much better. Good catch Hibbert. The good news/bad news is now you can/should start over on the main stack. I would begin with the AC120/BE3/MJ130 and take it from there...
AC120-BE3- Mainjet somewhere between 120-130. I felt a little bog but passing 1/2 throttle it's fine

This is the plug with 10miles ride, a couple of short WOTs , normal shutdown.... Picture under sunlight, in the shadow looks darker than this pictures
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Are those silver specs? If so that's melted aluminum from the piston. Which would mean your to lean and running hot, have detonation issues from timing advance or both.
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Christopher_55934 wrote:
Are those silver specs? If so that's melted aluminum from the piston. Which would mean your to lean and running hot, have detonation issues from timing advance or both.
Maybe sunlight ? This is without sunlight
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mendozaram wrote:
AC120-BE3- Mainjet somewhere between 120-130. I felt a little bog but passing 1/2 throttle it's fine

This is the plug with 10miles ride, a couple of short WOTs , normal shutdown.... Picture under sunlight, in the shadow looks darker than this pictures
Plug looks fine to me. If you're getting a bog at mid-throttle, try using your E3 mixer tube instead of the BE3. Leave everything else the same.
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[quote="Kowalski"]
mendozaram wrote:
....Plug looks fine to me. If you're getting a bog at mid-throttle, try using your E3 mixer tube instead of the BE3. Leave everything else the same.
E3 looks similar to BE5, richer than BE3. I'll try, but i was thinking , it would have more bogging. Let me try with E3
⬆️    About 3 months elapsed    ⬇️
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Finally , i got a set of MJ from BGM from 115 to 138. I'd put again the deblued Air filter with heart drilled. With MJ130 in got bog. So...

Main Stack AC120-BE3-mj125 , IJ 50-120 screw 2 1/4
Normal Shutdown IJ 50-120 Screw 2 1/4
Normal Shutdown IJ 50-120 Screw 2 1/4
4th Gear WOT. AC120-BE3-mj125 (under sunlight)
4th Gear WOT. AC120-BE3-mj125 (under sunlight)
4th gear WOT. AC120-BE3-mj125 (without sunlight
4th gear WOT. AC120-BE3-mj125 (without sunlight
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Nice progress. Change the BE3 for a BE5, then I think you'll be ok.
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Jack221 wrote:
Nice progress. Change the BE3 for a BE5, then I think you'll be ok.
Thanks Jack. Right now i dont have a BE5. But i have a E3 from LML. For what ive seen. E3 its richer than BE3 right?

I got a GSF Dyno made with AC140-E3-Unknow Mainjet (in RED) (between 120 and 130) without Air Filter and one from today (in BLUE) with AC120-BE3-122 and Drilled Air Filter. 2nd gear. Main Gearing 23/68 and lost some HP. I will try mj 125 and see how performs
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2 runs in 3rd gear. Each jetting is in the description field of GSF Dyno
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Plug photos and dyno charts are nice, but how does it feel?

Were you getting any mid-throttle bogging or WOT spluttering with the AC120/BE3/MJ125 combo? If no mid-throttle bogging with the BE3, you do not need the richer E3 or BE5. If no WOT spluttering with the MJ125, the MJ122 will be too lean. If anything, you will want to go up to the MJ128 and see if that splutters.
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Looks like good progress Mendoza. Take my comments with a grain of salt we have different cylinders but similar capacities.

Might want to first find the sputter point with the main. I found a 135 main would sputter 1/2 throttle and beyond no matter which mixer. I know that because I recorded the tests.

On the mixer in my case a BE3 was on the borderline seemed to work good but under engine braking and opening throttle had a slight surge. A richer mixer BE5 seemed to correct a BE4 ran too rich.

With the BE5 a 132 would run but not clean. A 130 ran good a 128 ran better.
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Kowalski wrote:
Plug photos and dyno charts are nice, but how does it feel?

Were you getting any mid-throttle bogging or WOT spluttering with the AC120/BE3/MJ125 combo? If no mid-throttle bogging with the BE3, you do not need the richer E3 or BE5. If no WOT spluttering with the MJ125, the MJ122 will be too lean. If anything, you will want to go up to the MJ128 and see if that splutters.
With AC120-E3-MJ125 i got low to mid-throttle bogging, and some WOT splutters. AC120-BE3-MJ125, got mid-throttle ssplutters,then cleans up at higher revs but still having small sputters. The WOT bogging occurs with mj130. MJ132 it's just unrideable.

1/4 throttle or less, there is some 4 stroking. IJ is 50-120 2 1/4 turns out. I'm thinking to try 55-160 and see if cleans the 4stroking
hibbert wrote:
....With the BE5 a 132 would run but not clean....
just like this is what i felt with AC120-E3-MJ125, runs But not clean

How can i send here the WAV files i'd recorded. I tried But got error sendind the post
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As far as the main stack, it sounds like you are too rich all across the board, which is unexpected with a BE3 and an MJ125 on a 187. I would try a larger air tube--AC140 or even AC160--next.

The 50/120 idle jet is almost certainly too rich. Definitely try the 55/160 and note any changes.
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Kowalski wrote:
As far as the main stack, it sounds like you are too rich all across the board, which is unexpected with a BE3 and an MJ125 on a 187. I would try a larger air tube--AC140 or even AC160--next.

The 50/120 idle jet is almost certainly too rich. Definitely try the 55/160 and note any changes.
Doesn't the idle circuit, add fuel to the mid and wot circuits? I was thinking the circuits are cumulative. Wouldn't you want to try the leaner idle first to clear up the 4 stroking and see where your at after that?
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E3 is very similar to BE5 for what you are doing.

From all you've said I would run AC120 E3 MJ122 52/140 this should be about right and worth a few plug chops to find out.
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Today i had a 60 Miles ride. The config was AC120-E3-mj122, IJ 55-160, 2 1/2 turns out. Just a small bogging from 0 to 1/4 throttle. I made many HARD Wot's. But o didnt check the plug hehehe, was a ride with 10 Friends , so, i didnt had time to check the plug. Im happy how is riding My bike. Thanks for all the advices.
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If that ride didn't blow it up its probably ok. 125km/h (77mph) is more than I was expecting from a VMC. How fast is it up hill with your 23/68 gearing?

55/160 is too big, not surprised it bogs. Do a sound recording and I can tell what you might need to do next.
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Jack221 wrote:
If that ride didn't blow it up its probably ok. 125km/h (77mph) is more than I was expecting from a VMC. How fast is it up hill with your 23/68 gearing?

55/160 is too big, not surprised it bogs. Do a sound recording and I can tell what you might need to do next.
There You go. Hope that works

https://sndup.net/6ks6

I think is more 4 stocking than bogging. Maybe an Bad use of words (English isn't My languaje) hehe

I didn't test on a long uphill yet. But the scoot feels great on some shorts and smalls uphills around My city. I'm waiting for a 4th z36 pinion and a Kytronic. Those are My next changes

I need to change My clutch too. Is slippy when i pull hard on 1st or 2nd. Right now i have an standard 6 spring clutch basket , but is banded with a ring, and a kit of 4 disc from Newfren for 6 Springs basket
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My Girl. "Cleo"
My Girl. "Cleo"
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Cleo is sexy! Had to upgrade my clutch and went with a BGM superstrong with Honda plates have no regrets.
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hibbert wrote:
Cleo is sexy! Had to upgrade my clutch and went with a BGM superstrong with Honda plates have no regrets.
Hehe yes she is , thx.

I really want to try this basket, looks pretty solid, with BGM CR80 plates, and DRT pinion.

https://www.duepercento.com/it/cestello-e-boccolo-vmc-per-frizioni-10-molle-per-vespa-cosa-t5-my-lusso-3101089.html
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I'd opened the engine to install the 4th short Gear , I'd change the gudgeon bearing too and found this pistón color. Too dark below the rings ? What do You think about it?

Kytronic is already ON too. I'm testing curves
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⬆️    About 7 months elapsed    ⬇️
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Jack221 wrote:
If that ride didn't blow it up its probably ok. 125km/h (77mph) is more than I was expecting from a VMC. How fast is it up hill with your 23/68 gearing?
Current Setup. 23/67 gearing. PWK 30 Polini, i'm still way too rich , the new Polini Expansión Chamber (Announced Oct 6th) and MRP Intake. I'm very proud to reach 83mph (GPS) in My CLEO. VMC it's the way to go
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So after a year or two after this post are people generally satisfied with there VMC 177?
Reliable? Performance wise ok?
Im thinking of replacing my Pinasco 17 Alu with the VMC 177 Super-G?

Any thoughts would be appreciated...
thanks
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Robbie 11 wrote:
So after a year or two after this post are people generally satisfied with there VMC 177?
Reliable? Performance wise ok?
Im thinking of replacing my Pinasco 17 Alu with the VMC 177 Super-G?

Any thoughts would be appreciated...
thanks
Im very satisfied with the Super-G... My last trip was a 8 days - 1600km , high mountains , and everything was OK. Its a solid kit
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Looking at that crank, what reed setup did you go with?
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mendozaram wrote:
Im very satisfied with the Super-G... My last trip was a 8 days - 1600km , high mountains , and everything was OK. Its a solid kit
Thanks for the feedback..
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I think it is worth noting that many VMC Super G success stories seem to come from people like Mr. Freak Moped and Mendozaram who built their kits as 187s with lots of other mods. I also think you need to be careful when you do your research that you are looking at data for the Super G and not one of VMC's aluminum kits, which seem much more advanced. SIP in particular seems to confuse them. Yes, that CNC machined head looks dead sexy, but if the intent is to build it as a bolt-on 177, I think it is otherwise pretty underwhelming.
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Christopher_55934 wrote:
Looking at that crank, what reed setup did you go with?
I got the MRP Combo with a PWK30

Today Duepercento sent me a Reed Block replacement for one from BGM (Part Number BGM2550). They had many replacement request for the MRP Reed Block. Mine it's just fine at least. But Aparently there are some blocks with sealing problems in the block rubber seal
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BvGM2550 is fully rubberized
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hibbert wrote:
Cleo is sexy! Had to upgrade my clutch and went with a BGM superstrong with Honda plates have no regrets.
As i told you, i got this one. Pretty solid, No slips, very Nice basket.

Now I'm planning to go for 23/65 instead of the actual 23/67. I feel the engine it's capable to move strong a 23/65 gearing. Or maybe 24/64 , what's Your opinion about it?
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Kowalski wrote:
I think it is worth noting that many VMC Super G success stories seem to come from people like Mr. Freak Moped and Mendozaram who built their kits as 187s with lots of other mods. I also think you need to be careful when you do your research that you are looking at data for the Super G and not one of VMC's aluminum
kits, which seem much more advanced. SIP in particular seems to confuse them. Yes, that CNC machined head looks dead sexy, but if the intent is to build it as a bolt-on 177, I think it is otherwise pretty underwhelming.
I dont think it could be much more underwhelming than my Pinasco 177 Aluminium kit? Even on the super-g cast kit the piston, port layout and head look much better than say my Pinasco or A Polini kit which are dated and havent changed in design for over 20 years…
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mendozaram wrote:
I got the MRP Combo with a PWK30

Today Duepercento sent me a Reed Block replacement for one from BGM (Part Number BGM2550). They had many replacement request for the MRP Reed Block. Mine it's just fine at least. But Aparently there are some blocks with sealing problems in the block rubber seal
Did you ever look at this style of reed block?

https://www.mrp-racing.de/VForce-4-RD350-reed-valve
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