Kings of 50cc help with my Scootermotard

[rabidnz]

yeah mate, I think you have hit the nail on the head, the most expensive thing will be the carb i think . i will start by locating a dellorto phbg as they are well documented and rather common, then make an intake manifold to suit.

As far as cdis go,are the cheap chinese adjustable timing/no rev limit ones bogus?

I have my eye on both the major ebays scouring for deals, will let yas know how it goes.

PS fixed the speedo today, it reads 75km at top speed, which i reckon is more like 60-65 , so thats probably pretty close to what its supposed to make im guessin, especially with a 90 kg sail breaking its little back

[SS90]

yeah mate, I think you have hit the nail on the head, the most expensive thing will be the carb i think . i will start by locating a dellorto phbg as they are well documented and rather common, then make an intake manifold to suit.

As far as cdis go,are the cheap chinese adjustable timing/no rev limit ones bogus?

I have my eye on both the major ebays scouring for deals, will let yas know how it goes.

PS fixed the speedo today, it reads 75km at top speed, which i reckon is more like 60-65 , so thats probably pretty close to what its supposed to make im guessin, especially with a 90 kg sail breaking its little back

Yea, so may of the Asian brands have moved on from simple scootermatics to things like the "Mofa Motards" because in Europe anyway, that is where the growth market is, and they have been making the bikes for the European manufacturers for the last ten years anyway.

Personally I think if you can find unrestricted coil suitable for your bikee cheap, I would say go for it, from what I have read, the only one that is different is when they fitted an immobiliser and I am sure that is model brand and year specific.

All the really expensive ignitions are pretty top end stuff, and unless you are trying to make over 20ps I recommend just a unlimited coil anyway.

[rabidnz]

Ok cheers for that, but if i get a new coil will I need a new cdi also, as it appears since they are part of the same unit, they are connected internally?

Just ordered a dellorto pbhb 21mm carb and malossi intake (not the giant bulky thing) , and a decent foam filter to suit and will get some spark plugs and jets to get it set up.
I have a couple of jets 100 and 105 i think, if anyone wants to swap for a couple between 80 and 95 id be stoked.
I'll try port matching the reed stuffer with the new intake manifold, as the bike was definitely smoother stock when I had it in, much more jerky off the power now.
The reed cage is pretty poo as well, lots of moulding marks and sharp ridges in the wrong places.
Also with the airbox gone ill have room to try out this tzr250 shock, which looks like just about a direct fit with a couple of spacers, worth a try as the one on there is set up for a small child. Ill space up the forks too and put a slightly heavier oil in.
Last of all ill probably gut the spannie as I beleive their is a cat of some form in there, but like this reed cage stuffer this is supposed to help it out in stock trim.

[SS90]

You can buy a coil that works the same as your current one, just with no rev limit.... That's the one to buy at this stage in my opinion..... The high-tech stuff won't make a lick of difference at this point, if you found a need to buy one of the ultra high end cylinders, crank etc and had a massive carb and so on, then you would really need one, but for a standard cylinder, you just want more revs - nothing else.

Personally I would suggest a pipe too, but by all means try it first.

[Spearfish]

Did you score a set similar to scootlings trade me auction?


http://www.trademe.co.nz/a.aspx?id=320031768

I'm finding a pod filter will clog up inside 200 kms with oil from the fogging mentioned in another thread (don't know how to find the thread), and its been crap riding over winter I almost went back to the airbox.
Brilliant for summer and the better air flow meant a 2 size jet increase but its high maintenance. The other thing is the induction noise its like a rabid chainsaw so it draws attention, often unwanted.

[rabidnz]

ss im not even sure that my coil is limited at all? I think i just need better gearing and more juice. Also the stock pipe seems to be tuned rather high in the rev range compared to other stock 2ts ive ridden, im thinking gutting it may make a big enough difference so that i dont need to change it.

and spear i did buy that exact auction, but i swapped the stack for a filter and made them knock the price down a bit. Keen to hear more about the fogging you have mentioned , anyone got a link? May have to attempt some sort of airbox revival., though id rather ditch it so I can fix a better shock.

[woodyracer]

ss im not even sure that my coil is limited at all? I think i just need better gearing and more juice. Also the stock pipe seems to be tuned rather high in the rev range compared to other stock 2ts ive ridden, im thinking gutting it may make a big enough difference so that i dont need to change it.

and spear i did buy that exact auction, but i swapped the stack for a filter and made them knock the price down a bit. Keen to hear more about the fogging you have mentioned , anyone got a link? May have to attempt some sort of airbox revival., though id rather ditch it so I can fix a better shock.

I took one of these bikes for a ride not too long ago around mt wellignton track, and yeah they go good!, bloody fun to ride, anyhow this particualr bike had power valve problems which make the bike feel how you've described. Maybe look in to that?

[F5 Dave]

Good point Max. I agree 150%. There can be no other option.

Now if you'll just explain where it is located. . .

[rabidnz]

hehe well if they were boyesen power reeds, he wouldnt be 100% wrong
I had the reeds out and visually they seemed fine, shined a light from behind them in a dark room and none coming out, they may have gotten weak so i will try to find some replacements .

im eyeing up this chamber and can as a possible candidate for chopping and turning al little till she fits...http://www.trademe.co.nz/Browse/List...x?id=320531947

[woodyracer]

Good point Max. I agree 150%. There can be no other option.

Now if you'll just explain where it is located. . .

OH IM SORRY....i dont have a PHd in 50cc engines.....
silly me messing with the majestical, mechanical mind of F5dave

wow gota love kb

[F5 Dave]

hehe well if they were boyesen power reeds, he wouldnt be 100% wrong
I had the reeds out and visually they seemed fine, shined a light from behind them in a dark room and none coming out, they may have gotten weak so i will try to find some replacements .

im eyeing up this chamber and can as a possible candidate for chopping and turning al little till she fits...http://www.trademe.co.nz/Browse/List...x?id=320531947

Reeds should be ok, won't be high mileage.

Not even sure what that pipe is off. But I'll tell you now there won't be a section worth using on a 50.

[F5 Dave]

. . .

wow gota love kb

Yeah you do huh? People who clearly don't have a clue giving advice. PV on a 50, you'd be lucky.

[SS90]

Yeah you do huh? People who clearly don't have a clue giving advice. PV on a 50, you'd be lucky.

Hum, yea.

Im not saying your not correct Dave, but would you be able to elaborate why a variable exhaust port height/trapped compression ratio is unsuitable for a fiddy.......... You and I both know why, but clearly Mr Spotty here does not.... and it could make for some interesting discussion.

[rabidnz]

maybe you could even start a thread about power valves and why they arent in 50ccs

I may have to get a pipe program and build one myself, tack it up and then have the welding done by someone a bit tidier than myself, as pipe prices are pretty ridiculous, looking at least 200 pounds, plus god knows what shipping, plus having to then cut and twist your expensive new pipe, just not worth paying 700 bucks for a scooter exhaust imo

[SS90]

just not worth paying 700 bucks for a scooter exhaust imo

That's cheap if you think about it, but you can find a cheapy on ebay almost every day..... postage is a killer, but keep you eyes peeled and you will find a good un'.... I built a 20 hp fiddy 2 years ago with a pipe I brought on Ebay..... engine didn't last the distance but.....