the Derbi GP1 gets NEW PIPE and Racing Variator | RARE Piaggio Scooter
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- čas přidán 28. 08. 2024
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Very stoked to throw on the new Yasuni R exhaust pipe on the Derbi Gp1 scooter, also threw on a new naraku racing variator kit. Definitely need to do some more tuning on this bike and get it runnin better, gotta love 2 strokes!
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#2stroke #piaggio #derbi #gp1 #scooter #polini #bigbore
with the yasuni r you actually gotta lighten the weights because it is an high rpm pipe
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☝🏼☝🏼
And stronger clutch springs
yea go something like 4.3 or 4.8 grams
4.5
Hey I tune piaggio scooters all day. So a yasuni r with a pod filter you should be somewhere around 110 with your main yet. Your rollers with piaggio at least should be around 5 that can go up or down. Get an polini 22kg spring and 5000rpm clutch springs or get an polini 3g that you can adjust. Never have to worry about those damn springs again. And if it doesn't pull its pretty obvious because your clutch is not made fore that pipe. Your whole cvt isn't. And get an 70cc piaggio engines is not like one or the other you can go with a cheap alu 70cc like 60 65 and stil pop it up at 55. Or tune your cilinder, 50cc piaggio std can go pretty fast if you widen every port en raise your exhaust port bij 3 mm. Hope you see this. Love the videos.
Komt gwn door 19mm carb met pauperfilyer op 50 cc, gwn 17.5 met standaard luchtfilter 3/4.5 gram rollen standaard drukveer en omega zilveren trekveren werkt mooi
@@basl7868 ik heb 70cc giet met std luchtfilter, 4,5gr rollen en gele druk & trekveren
im looking for a carburetor for mine, and I can't find any that would work under 100 bucks, mine is 80cc swapped, i dident swap it but someone before me did i think. i would love to have your opinion on which carb and jets i should use.
About the derbi.I have an sr50r 70cc mhr replica cylinder.I tried many pod filters with the stock carb 17.5 dellorto and u cant get it really to work .Now im running a stock air filter box with 21 dellorto carb.Try buying STOCK air filter box from piaggio nrg,gilera runner those can be dererstricted and u can run them even with bigger carbs for exp 19,21 and myb 24 if u drill some holes and they are way better than the pod filters in my opinion.Only downside is that it doesnt scream as much as if u were to use pod filter.And that yasuni r pipe is not really for stock cylinder is more likley to work good on sport even racing cylinders.Piaggio engines have premium crankshaft with shitty stock cylinder try putting in a better cylinder.My crankshaft resisted the mhr replica pretty good and i have no problems running it .Sorry for my bad english im from europe.Have a nice day and i hope this will help somehow about your bike.
that yasuni can go just fine on 50cc standard i have that same pipe under my 50cc standard aerox and runs pretty good
Robbie I hope you know there is a big difference in cilinder lay-out between piaggio stock en minarelli stock. En yes stock airboxes are fine and you can cut the whole inside out of it and it screams a bit les but maybe thats a benefit 😉
Yasuni R worked fine for my 50cc. On 70cc you can already use C16 ,C21 utt..depends on the whole setup ofc.
Yes yasuni r can work great on a stock 50cc but for its full potential it needs a better cylinder such as malossi sport or polini corsa
Not sure why people complain about shipping, if you want to support the creator then just buy it if you have the cash 🔥👌
100% the pod thats giving you issue's. Tape that thing off and start peeling pieces till it's happy
used to own and ride piaggio here in uk , Trevor have you removed the pod filter and ran it without , a good way to check if its gettin to much air is to run without a filter and put hand over the intake to see if it picks up when you have it semi covered, . in the UK we DO NOT run pods, we run the stock box with some slight modifications, we drill holes into the airbox and use black electircal take covering all holes then as we tune we romove one piece of tape each time till we see a good tune . the stock setup is Run rich with a heavy restriction on the air side , when we add a new exhaust we just Upjet by 15% or slip a slightly bigger carb on (19mm carb ) and jet it up by 7-10%.
roller weights 8g is way to much thats a total of 48g , you want to be around 4g - 5g so between 24g and 30g total weight , you could cheat a little run 3x 3g weights and 3x4g weights to give a combined weight of 21g , its gonna open that variator quick for pullin away then fully max as the rpm hits its max .
yasuni r is a high rpm pipe 10,000 rpm where it produces its max power, and the yasuni R is more for a 70cc kit not a stock 50cc jug you have installed if im correct ?
When changing the jets, look at the colour of the spark plug. Its very important to drive a bit full throtle and look what colour the spark plug is. Black = to much gas, white ish = to much air, too less gas. I hope it helps!
On the Derbi, I can almost guarantee its that Air filter, Try to find a stock air box for it and your problems will go away.
It is the air filter I had the same problem that he had as soon as i put the airbox on it worked immediately
@TrevorPritchett Didn't mean that as a Call out on the Shipping Cost...... You Know I'm a HUGE supporter. It was just a surprise was all! I'll Just have to get them in person when I come down for a Visit ;-)
I couldnt tune my sr50 with a sport filter(malossi e5) right, so I changed back to stock airbox with a high flow foam (I drilled a couple of holes in the airbox too), although it was rideable with 90 someting main jet. From my experiance sport filter isnt worth ir if your running a 50cc cylinder kit.
True!
With Yasuni r you should put in tighter clutch springs, a tighter accelerator spring, lighter rollers and you should go up in jet, like way up
Thanks for the head's up on Baiodiao. I was about to pull the trigger on one to fix up, but never mind if it's going to be hard getting parts. It occurred to me that in all the scooter videos I've watched, no one talks about that brand. Maybe I'll just hold out for something less obscure. This channel is essential for noobs like me. I really appreciate all the work you put in to it.
I noticed you had some problems painting in your last couple videos. Allow me to give you some tips on paining plastic. The most important tip is use the same type of paint. For example, if you are using acrylic paint, then use all acrylic paint, clear coat and primer. Or oil based, water based etc, use all the same type or you will have problems. The one tip people seem to overlook is using the same manufactures paint. Companies use different formulas, and their paint formula is made for their products, so if you use Krylon, then use all Krylon products, Rustoleum, then use all Rustoleum products and so on. You can have luck mix and matching paint from different manufactures, but you will always have good results using paint, primer and clear coat made by the same company. you do not want to use Krylon primer with Rustoleum paint or clear, stick to using the same brand for the entire job. And if you are painting plastic, use Adhesion Promoter. Adhesion promoter is made specifically for plastics, and will stop paint from bubbling, chipping and flaking off. So basically use Adhesion Promoter, use product from the same manufacturer, and use products with the same base, acrylic, oil etc, and you will not have problems. I will recommend some spray paint for you, get some Rustoleum turbo. Rustoleum turbo sprays like 4 times faster than a regular spray can, and you can spray paint things super fast with a rattle can. I think they only have a couple colors in the turbo cans, but they also have turbo primer and clear coat, so you can primer, paint and clear super fast. Just search CZcams for Rustoleum turbo, and you will be amazed by how fast it applies paint.
Great vid again, still so amazed by the amazing stitching and paint combo. Looks awesome
Check your reeds to see if there broken or chipped or gapped. Also see if the Crank is loaded up.
Nice.. let's see it.. go with the grab bars..you can always take em off
yes, that's the spot for the oil pump. Polini corsa, cp21, and yasuni R or c16 is the tried and true recipe for a solid prebug wheelie bike.
You need 17.5 carb and factory air filter. With the yasuni jet 75 on stock filter and 17.5, rollers 4.5g and some harder clutch springs. Polini CP19 is too much for stock cylinder, the 8g rollers are waaay to much for the yasuni and the stock cylinder. Yasuni R is a pipe that likes revs and it has all the power in high revs. Sorry for bad English greetings from Croatia :)
Perfectly explained.
Yay new video
The derbiii piece
the stock variator is really good on the piaggio engine, i just built my gilera runner (same engine) id lower the roller weights to 4.5g-4.8g ish. stiffer clutch springs around 6k or 7k engagement and stiffer contra spring ..that pipe makes power up top so youd want the clutch to engage closer to the power band. also the piaggio engine really doesnt like pod filters ive seen bikes jetted all the way up to 110-120 main with a pod and still doesnt run right ..on piaggio engines they only work well on full on race setups. try find a stock airbox.. i run a stock airbox 68main jet on 17.5 dellorto which is probably best size for 50cc...id go 21mm on 70cc or bigger
Get an piaggio Zip 70 🙌💨
gilera runner
Lmao it's not that easy to get gilera ,aprilia ,piaggio etc in USA ,as i see
@@davis9045 import one
@@davis9045 They sell them in Canada. I bought a typhoon 50 and recently put a 70cc big bore.
One massive thing is getting Piaggios into their powerband. Make sure the rear clutch bell isn’t slightly engaging as that can be enough to make them bog. Make sure it spins up before grabbing with light weights. Or check the compression of the cylinder because if it’s not new, it’s very likely that it’s been ripped
With That setup you need between 5.0/6.0gr and it runs best on a malossi sport vario and stock airbox with jet 70/72/74
You need to sh the variator boss until the belt is all the way at the top of the rear pully, it will completely change the launch, I did it to my axis and it complete rips off the line now
Nice got the same pipe under mine aerox
And change your compression spring in the clutch and extension springs
and rolls to 5.0
And maybe a yelllow compression spring
thats makes my aerox 50cc runs good with yasuni pipe
Throw a 72 with a twh mini crank in the purple s and keep the stock gear for sure one wheel all day
btw a 19mm is a bit too big for a 50cc i would recomend to try a 17,5
Usually try with the standard variatior with 4.5gram rollers and a standard 17.5mm carb, 68 main jet, 32 pilot jet, needle in the middle, standard air box and no restricter plate
if the derbi is a 50cc the carb is too big , 17.5mm, 19mm carb is prefered with a jetting of 65 and up .... you may or may not ti change your roller weights but 8gr is for if you're heavy like with a pinon
if its a 70cc the carb is fine , 19mm, 21mm 24mm is prefered with the correct jetting of 90 and up (contd if its a 70cc your weights are too heavy if u want the bike too fly youll have to resort back to 5gr or 5.5gr ...... after the jetting the carb to perferction you just have to play with the air screw...hope it helps..piaggio is very easy too tune :) put bck the carb needle in the center
Minarelli have external crankcase oil pumps so its completely fine open, that carb on the zuma is an ebay carb so it isn't jetted properly, it was probably jetted for a pod filter
There is probably also a restricter plate in between the reeds and the intake manifold on the derbi, its an extremely common thing on European piaggio motors, I had one on my 2009 sr50
The Big ol hole by the fan shroud is where the oil pump goes lol. Mines the exact same. Run mix and you're good
You don't need to plug the hole or anything its all gravy
You gotta fix that awefull throttle response by adjust the needle height and the air/fuel screw for the idle system. Then you can play with main jets.
Derbi - 68 jet, stock airbox, stiffer clutch springs to match the pipe (red in colour) 4.8 or 5g rollers in the naraku variator and new belt Clean the carb and check reeds first
Cone filters suck
Bunas. Para poner a punto la Derbi, a parte de ajustar la carburacion, bajale peso al variador y monta muelles al embrague o un embrague de competición, del tipo a polini, stage6 ... el motor piaggio preparado es muy potente.
Try 4,5 or 5 g rollers, put the regular airbox on
Clutch springs , higher jet ,
ayee mopboyzzz!! love the seat cover really looks nice. i think you should run the grab bars, and for sure paint it red!! i love when you swap variators and weigh pieces and compare them! new exhaust sounds sick too. im not sure if that pod would screw with it but im sure its increased airflow so you probably need a lot more fuel to compensate for it. but i hope you can figure that out!!
You need to run a big bore kit with an aftermarket carburettor otherwise it won’t run properly with an aftermarket carburettor on a stock motor
try jet 100, or someting in that range. With full trottle it sucks too much air in and thats why it is probably acting like that. A friend of mine has a derbi senda 50cc and had the same problem. This fixed it for him.
Agree; spray the grab bars red and put them on there.
Definitely run less weight for your rollers, I would try 5 or 6 gram weights, it will make a huge difference
Yes on the grab bars!
You need to do another ground to coil for prebug it helps a lot
ive seen a lot of gp1's here in canada bc, may be able to find parts here trevor
Polini Cp 21mm, yasuni r for the blue bug 🔥💪🏽
Your at a dead point with the airfilter,you need to put the original airfilter box on it and remove the tube inside,or put on a bigger cilinder 65cc or 72cc ,normal setup 49cc stock engine with yasunni pipe,you go about 90km that's 55.923 miles 👍😁 keep up the good work
Had the same problem on my runner RST (50CC/M Piaggio engine) its 100% the open airfilter. The standard cilinder also doesn’t like aftermarket pipes (ran mine with a hebo gara) I’d suggest if keeping it 50cc to leave it stock. Otherwise run a 70cc. That’s the easiest way to make it run good/stable
If you are running a pod filter you should run main jet at around 100, but i wouldnt bother jetting 50cc with a an open filter...just put on original airbox, its way better and easier to tune a carb with it. Jetting with airfilter on piaggio engines is really hard and you need to have a lot of knowledge about tunning.
And please dont use that naraku vario, just buy a malossi mhr or polini one they are way better. And for rollers use somewhere around 6g, change contra spring with a stiffer one and change clutch springs to engage at around 3,5k/4k rpm because eith that yasuni r you will have very poor bottom end if the clutch engages at 2k rpm
Sounds like you might need to up that jet a bit since you added the pipe. Im running a 110 Mainjet
I love the pipe! Thats how my LEO VINCE TT pipe use to look in 2014. Since my bike stays outside the weather ruined it, not once but twice. I restored the pipe like 2-3 years ago but it looked like crap again this year lol. I just painted it yellow in that video I showed you. Not sure if you checked it out.
Heres my perfect wheelie set up on my stock 50cc
50 cc Head and Piston
4.7 Gram Leo Vince Rollers
1000 RPM Clutch Springs
110 Main Jet
Leo Vince TT Pipe
Air filter (Make note I was wheeling it for blocks without a aftermarket air filter...the aftermarket one just looks cooler lol)
Bro its so easy to wheelie.
Those 8 gram rollers are gonna give you more top end but slow on the take off. I would of left the 5 grams on. lol
Im thumbs up #87 Showing support from Philly!
that oil pump hole does not go into the Crank Case it is just behind the stator for the Zuma get a Corsa Cyl., that s6 intake. 19mm CP, TOP CVT. S6 CLutch and Bell.Thats where I would start.
We need some retro color MopBoyz slides!
I agree for sureee!!!👌
Loving the socks and sandals guy very creative 👌
Brother, you stay with the flyest shit!
As a derbi owner, I can tell you that they are one of the crispest, but temperamental bikes ever. Run like shit unless that sweet spot is hit, after that they run beautifuly
bigger main jet 100-105 for start on open carb ,adjust airscrew near close or richen the needle adjust clip to bottom, then stiffer center springs..that pipe is a freeflow pipe..its gonna get worse from 90 to 65 main jet
paint the rims and grabbars candy red that would look sick
Put on an airbox I had the exact same problem with my gilera runner that got a piaggio engine.
I think you should by an Honda sfx. I have one it’s super easy to work on. An it’s so easy to weely stok. I bought one in super good condition for 450 dollars
Ya on the Zuma you need a cover over the hole for the oil pump.
The oil pump doesn't go into the crankcase, you'll see when you pop off that stator to check the crank seal.
Not sure if that naraku was even a upgrade...
Weights about 4-6grams
Strongest/Hard small clutch Springs
For 49cc with 17.5mm carb, jet should be about 65-85.
If "sport" air filter is used, then jet should be bigger.
Hiper-2 piaggio engine with yasuni r even stock should be going pretty fast (60mph minimum) and wheelies.
Check your reeds, and your float height. It sounds like a lean bog, so maybe youre running out of fuel or your reeds are chipped. Thats what im leaning towards
There should be an restrictor in the muffler of the yasuni r.
try putting a bigger jet in the carb on the derby and try again i had that problem put a 110 and it works really good
once you get carb figured out try runing only 3 rollers out off 5g kit just space them out evenly
, if its rips get some ~3g kit i had same issue with my aerox it bogs with 5g but power wheelies with 3,2g big diference, you need to get to powerband high rpm, small diplacment wants to spin
The gp1 is a great motor!
Put Stock air Filter on it again i'm pretty sure that helps ;P
Stock vario with 3/4.5 gram rolers, 17.5 carb with stock airbox jet size between 67 and 84, stock clutch springs
I got a stock 50 2stroke I cant get it to go very fast 20 25 is about it and it has plenty of power seems like its should have more any ideas
Try to find a PMtuning 360 exhaust they sound so different and the 2 stroke ping is unbelievable.
Try Malossi Multivar. A 68 jet is usually standard for that pipe I think if it is the same Piaggio as the SR?
Check and see if the pin that goes down in the top of the carb on the derby isn't slightly bent. Cuz it kinda sounds like my toatoa did when I cleaned my carb out I made a mistake and bent it just a little. And I had to rev it to a certain rpm before it got going. Replaced the pin after trying everything. And that pin turned out to be the problem.
it wants more air!
Yeah most piaggio engine don’t like it when you mess with the original part but it sound like it needs more air
Nah it needs more fuel its a commen mistake because of the bwoappp sound
11:38 that is actually the hole for the oil-pump
19mm to big for a 50cc u need a 17.5 and stiffer clutch springs and like 5 gram rollers
Was there a vent line on the stock airbox?
i have that exact piaggio hyper 2 engine and had the same problem but i figured it out i had a 70cc with that exact air filter and a polini for race 4 exhaust and mine took a 112 jet if its a 50 maybe you need a 82 jet seemed to work perfect for me
i think if its a 50cc than the 68 was way to lean and 90 was to rich
i think the fact that you have a 19mm carb a 70cc kit should be way easier to tune its pretty hard to tune a 19mm carb to a 50cc
if you want a good wheelie bike, look into a polini high speed variator kit
Yasuni r pipe is very hard to tune its well known try a sito plus waaay easier and gets loads of power . here in the Netherlands almost everyone has piaggio scooter so it’s weird to see u guys don’t have piaggio bikes that must suck
oilpump by the zuma is on the ignitionsite of the case and the derbi maybe needs a smaller Carb because u got that vacuum on fullthrottle
11:35 that is not for oil pump. That is for stator wires and a rubber seal is supposed to fill that in.
Thats is where the oil pump goes on the prebugs tht hole needs a block off piece
Like @
Milac Wurst is saying, you probably need a smaller carb (17,5mm - 21mm). It definitly leans out with full throttle. You also got to know that the new exhaust (Yasuni c16 or Yasuni Z/R) on the derbi is for highend 50cc and lowend 70cc. Take care of the Piaggio engine, the Hi-Per 2 engines are really good, they make around 2-3 hp more than the horizontal minarelli.
And could you please make more technical videos about your Zuma, because i am currently fixing a mbk booster rocket which is very similar.
lighter rollers for the yasuni and if its an 70cc you prob need bigger carb or if its 50cc you need the stock airfilter
I fell like the gasket under the intake manifold/reed valve, mught not be there, try replacing with gasket maker, then myb buy a manifold
The stock oil pump on prebug is by the startor under the fan shroud
You need a bigger main get, thats why it makes the BWOAPPP sound. And go for around 5/6 gr rollers.
On the gy6 try and make sure you're valve's are adjusted right, that'd be the first thing I'd check..
these are 2 stroke man , no valves on a 2 stroke
the roller weight are te heavy shoud be around 3.8/4.2 grams and carb with normal air filter jet 78/84 that is fire for wheely
U got to lighten the weights and change the jet to a bigger one if that doesnt work change the air filter, if that doesnt work that bogging is somwhere ftom
I have delortto carb on my piagio engine vith 98 main Jet and 4.3 g variator rolers and malossi purple spring and try to put stiffer springs on your cluch i have transmision and carb regulatet just like that and it's running prety well
oh man please get yourself an sr50 ditech (2003-2006) (water cooled /intall an electric water pump ) trust me it doesnt look too fast but its a killer on the road ... polini 80cc kit and heck booster carb ( broke rider af) / with stock everything i managed to hit 120 km/h as a top speed ( some of my homies calling it a thick frog cause its green ... and some other calling it aerox killer ) that will defently motivate me to keep up and maybe get out on a ride with the boys ...
If carb doesn't works for u,check reed, or maybe the porting (not sure if used the correct words for my language t English)
The derbski is a big scoot
Maybe Theres a small air leak somewhere in the mani, i had the same problem with my Yamaha😃
My aerox was doing this unless I put needle clip on bottom or second from bottom, turned out to be carb for me, went from 19ml to 21ml runs mint now (70kitted tho)
oil pump stator side, yes it needs pluged.
just do a fall engine rebuild on gp1 bro, on the zuma i believe that is where the oil pump once woz lol
on gp1 cud be cdi, coil or plug, old ped of mine woz running bad couldn't work it out for weeks kept messing with the carb and in the end it woz the coil
if u are going to run the 19 mm carb you are going to have to put a 70 kit on it, you are draining it
the piaggio stock variator is better than the aftermarket sport ones.
also its way too lean you need probably a 100-120 main jet
@@Bidalotroxi i had the same problem i putted a 118 jet(the biggest i had) and it fixed it but its a lil too rich
And the blue one is wayyy too rich, needs alot smaller jet and leaned needle