mods for X1

[cdhd2001]

Hi!

I have an X1 from pepboys. It has the orange engine cover. So, is it a 43, 47 or 49 cc? Also, I am 6 ft and 210 lbs. What would be some good mods to make the bike faster. Currently the speedo says 25 mph max. I have also seen the X2's cvt transmission for sale. Would it fit the X1? How much performance could I expect?

Thanks!

[thadd677]

I'm not sure what motor size they sell on the bikes at pep boys but I'm guessing its a 49cc. Check out this site for performance parts.

http://www.hpminimods.com/index.php?cPath=23_26&osCsid=d27227011834accbb8cab891af3f13f5

[av0]

its 43cc bud

[heavyarmscustom]

shouldn't it say how many cc's somewhere before you buy it, also if all X1's are 43cc(orange cover) and i think all X1/X2s have orange covers, why does every place online say they are 49cc, maybe the engine just isn't designed very well. its a chinese conspiracy, well if it is 43cc im still getin my X2, guess my dreams of 50mph are gone if thats the case.

[2004x1]

Hi!

I have an X1 from pepboys. It has the orange engine cover. So, is it a 43, 47 or 49 cc? Also, I am 6 ft and 210 lbs. What would be some good mods to make the bike faster. Currently the speedo says 25 mph max. I have also seen the X2's cvt transmission for sale. Would it fit the X1? How much performance could I expect?

Thanks!

You have a true 49cc engine. Don't bother with a cvt tranny cus the belt inside snaps. It has good power but what good is it if you have to buy a new belt or new tranny every time it breaks?? To hop up your X1 get a walboro carb, a racing pipe, change your gear ratios, and run at least 36:1 or 40:1 ratio on 91 and up octane. If you really want your bike to haul major butt, get a engine at www.4myscooter.com.

[YAMAHAMINIMOTO]

im runnin 100octane racing gas....it dont really make it faster but it runs pretty smooth, i also made a ram air intake that seems to give it a little more kick. granted not like a huge hp gain but i does do a little, it comes out the side faring and grabs tons of air...ill get a pic on here if anyone wants

[Freddie]

it comes out the side faring and grabs tons of air...ill get a pic on here if anyone wants

Yes please post a pic! Or PM me, whatever...

[YAMAHAMINIMOTO]

air intake

for those who were asking for a pic of my air intake here it is. keep an open mind this is just a prototype, i drilled a 1'' hole in the stock filter cover where the other end of this pipe fits into. . if anyone wants one as soon as i get all the bugs out of the design ill make them

[blah]

Nice to see someone having a go

There's a few calculations to see what type of boost you could be getting from Ram air intakes, it goes something like:

Pra = (mph)^2 x 0.0000176

where
Pra = Pressure of Ram Air in psi
0.0000176 is a constant from a basic designed ram air box

for example,
40mph^2 x 0.0000176 = 0.028 psi

0.028 psi does not sound like much of a boost but it's better than nothing

as you can see by the formula the result increases at a rate ^2 your speed.

source: http://www.vararam.com/reality_of_ram_air01.html

By the way, did you know there is actually less energy in higher octane fuels, the advantage you gain from higher octane fuels is the fact they allow you to run higher compression ratios, more advanced timing ect ect before detonation. Typicly in Australia fuel companies mix up a batch of 100 octane with 50% petrol/ 50% Benzole
that gives a btu rating of ~ 18150, whereas unleaded petrol has a 19000 btu

When trying to make an advantage with lower btu rating fuels it is usually an advantage to run them richer than a normal petrol/air mix.
for example methanol burns at ~ 5.5 parts air to 1 part methanol but only has 9800 btu, but if you compare it to petrols 12.5:1 you get
(12.5/5.5) x 9800 = 22272 btu, That's why methanol has 17% more energy available for power than petrol has, not to mention you can run methanol at some mad compression ratios.

Now A 100 octane Benzole/ Petrol mix has a stoichiometric ratio of about 11.75:1
so: (12.5/11.75) x 18150 = 19308 btu, That's a bit about 1.6% more power
if you fatten the mixture up. BUT consider the fact higher octane fuels like to eat fuel diaphragms.

Consider this, the divergent cone in an a tuned expansion chamber can make a negative pulse so strong that it creates a negative pressure region inside your engine so strong that it acts like BOOST pressure at the inlet!! then when the inlet is closed the convergent cone pushes Unburnt fuel back into the cylinder under pressure!!! Therfore Our engines can make better than 100% volumetric efficiency!! AKA BOOST


I could explain this but your brain is probably already in overtime, i should just say buy a good pipe

[d-a-n]

im selling my whole motor w/ all goodies $ 600 from ada

[JBonnardel]

Don't bother with a cvt tranny cus the belt inside snaps. [/url].

Mine is just fine... heres a trick, loose the cheap china belt for a quality automotive belt and have no worries.

[2004x1]

Mine is just fine... heres a trick, loose the cheap china belt for a quality automotive belt and have no worries.

Well an X1 is chain driven rather than a belt that can snap. I say LOSE the belt and switch or fabricate your own tranny. Please, dont quote what I post if ya have nothing to back it up.

[JBonnardel]

Ok sure.

I do know what I'm talking about, I have several X1-s with the CVT.What do mean not having anything to back it up? I guess a shop with 100K of scooter, pocketbike and kart inventory isnt enuf?

[2004x1]

Ok sure.

I do know what I'm talking about, I have several X1-s with the CVT.What do mean not having anything to back it up? I guess a shop with 100K of scooter, pocketbike and kart inventory isnt enuf?

Anyone can own a shop and sound like they know what they're talking about Sounds like your situation. But hey if people believe you in what you say and you get business then go for it. But I'd rather see some postings that I know people arent BSing around.

[JBonnardel]

Ok, I'm not gonna get into a post-war, but what exactly do you think I'm BS'ing?