Speedfight 2 50c- de-restriction

matttttt · Borekit Bruiser Joined: 24 Dec 2004 Karma :

Hi... I recently bought a second hand speedfight 2 50cc and it has a 70 ball kit in it and is fitted with a zx pipe... it seems to make too much noise compared to my mate's scooters (some of them have the same model) and it seems to not sound too healthy... I am planning to get the secondary gearing done on it soon... bu I want to get the other problem sorted first... can anyone think of what might be causing the shaking and noise? thanks

Matt Thumbs Up

matttttt · Borekit Bruiser Joined: 24 Dec 2004 Karma :

Any input no matter how small gratefully recieved Wink

binge · Emo Kiddy Joined: 03 Jul 2004 Karma :

All speedfights are ratteley bikes. Ive got a Speedfight one, Which is a W reg, It has absoloutly every engine modification going and it rattles like hell...

When does it shake, Is it as you are pulling away, Or is it all the time?

<|Binge|>

matttttt · Borekit Bruiser Joined: 24 Dec 2004 Karma :

No it rattles all the time and sounds loud compared to my mates bike which also goes a lot faster Crying or Very sad

matttttt · Borekit Bruiser Joined: 24 Dec 2004 Karma :

mine's an x reg.... it's faster than my mate's sr aprillia up hills so the 70 ball kit is definately there and i think it's just the gears holding it back... thus why I want the secondary gearing done on it.... does this sound about right?

binge · Emo Kiddy Joined: 03 Jul 2004 Karma :

Erm. Well my scooter is louder than all my mates scooters. Reason: - Its got a race exhaust and A K&N filter...

Most 50cc scooters can keep up with me around town, remember, its only a 20cc difference (Which isnt very much)... If your mates have got new scooters, they will also be alot faster...

If its got a 70cc top end, then It will only perform as a 70cc if the carb has been set up for a 70cc...

The best person to ask would be
"divuk83"...

He has probably Tuned up more scooters than you have had Hot dinners. Wink

<|Binge|>

matttttt · Borekit Bruiser Joined: 24 Dec 2004 Karma :

cheers mate Thumbs Up

binge · Emo Kiddy Joined: 03 Jul 2004 Karma :

Im actually asking some advice from him now... See the other thread...

By the way, What is slow about your scooter, Is it the Pull away, Top end or what...

Remember, The lighter the rollers, The better the pull away....

Also if they are old, then they will be flat so your scoot will pull away like a fart...

<|Binge|>

matttttt · Borekit Bruiser Joined: 24 Dec 2004 Karma :

what post was that?... it is slow top end... nice and fast pulling away and up hills... will the secondary gearing fix this... and could i put the secondary gearing from a speedfight 100 in mine??

matttttt · Borekit Bruiser Joined: 24 Dec 2004 Karma :

or would another gearing kit be more suitbale?

simon1221 · World Chat Champion Joined: 28 Jul 2004 Karma :

another gearing kit would either:

sacrifice acceleration to get higher speeds

sacrifice top speed to get higher acceleration
____________________
DNA50 (sorry) ->> TZR125l >> GPZ500S

binge · Emo Kiddy Joined: 03 Jul 2004 Karma :

yeh. Gearing up or down kills either 1 or the other...

If you was to gear up, You would loose your bottom end and uphill speed...

Personally I like the acceleration Wink

Better for wheelies!

Anyway, it is pointless geting a 100cc gear kit because a 70cc kit would not have to power to pull it off...

You can buy malossi race gears for about £40 but personally I dont think it will make your acceleration poor...

Take a look at your roller weights, If they are light (between 4 and 7g) then try some slightly heavier rollers (about 9g) The heavier rollers give slightly less pull away but give a smoother stronger higher speed...

Its more of a trial and error thing tho...

<|Binge|>

divuk83 · World Chat Champion Joined: 27 Nov 2003 Karma :

binge · Emo Kiddy Joined: 03 Jul 2004 Karma :

About the restrictor. It took me and my mate Jim 2 hours to get it out of his ZX...

Its like a steel funnel welded into the manifold of the exhaust...

You have to get a old screwdriver of a chissel and a hammer and break the weld off, Then you need to get a drill bit (just the right size to fit in the hole of the funnel) and twist it until the dril bit grips the funnel, then Pull it out...

Much easier said than done!

Yea, You need to describe the noises its making too... Laughing

<|Binge|>

matttttt · Borekit Bruiser Joined: 24 Dec 2004 Karma :

yes I suppose grinding more than anything... one of my mates reckoned it sounded like lack of engine oil??

matttttt · Borekit Bruiser Joined: 24 Dec 2004 Karma :

And how fast will it go once I have fitted the taller gearing kit?

binge · Emo Kiddy Joined: 03 Jul 2004 Karma :

Well my scooter has got absoloutly every engine modification going and it can top 60 (and I can still beat the ped bois who can do "75")

You ask divuk83, He has got a 172cc Dragster and I bet it does no more than 80 mph, and thats an extra 100cc to ours...

With the 70 kits, its really more about bottom end speed rather than top end, Be happy you have a scooter what does more than 30mph like my mate who has tight parents...

The grinding could be gear box but I doubt it, Its more than likely somthing in the variator (Mine used to grind)

<|Binge|>

divuk83 · World Chat Champion Joined: 27 Nov 2003 Karma :

Set up right with a gear up your clock may well be reading 65-70mph although, thats just scooter clocks for you! I would take the engine casing off and have a look at the belt and the variator if you are getting a grinding noise and if it were me I would't ride it until I sorted it out.

Dave

binge · Emo Kiddy Joined: 03 Jul 2004 Karma :

I used to get a grinding noise on mine. And it was because the engine side casing had been put back on and not lined up. It was sitting too low so the starter sprocket at the Variator end was rubbing on the top of the engine case. I ended up needing a New sprocket as it had no teeth left, and A new starter case cos it had a nice big slot missing out of the top of it...

Divuk, I was looking at your website! You have got too much money matey! Laughing

Your mate is brilliant on that SR125 (is it a 125, Seemed to pop up to easy for a 50)

<|Binge|>

Kye · Scooby Slapper Joined: 13 Sep 2004 Karma :

The SR had a 172 kit on as well I think.

A standard 172 will just lift the front end on power, its great fun Mr. Green

Even better when you bung the engine in a Zip, they weigh fuck all! Razz

binge · Emo Kiddy Joined: 03 Jul 2004 Karma :

Ive heard that the Zips are fast when tuned. Its funny cos they are like Granny mobiles too! Laughing

If ballance my body weight right, My scooter will lift on power, But its slow. Wink

What ped have you got?

<|Binge|>

matttttt · Borekit Bruiser Joined: 24 Dec 2004 Karma :

So a gear up kit and heavier rollers would make it go way faster?? The casing (where the kitstart is) is loose because the last owner and kind of dealer who has given me a 3 month warranty bodged it up with all the wrong screws... needless to say ill be getting him to fit the correct screws... any idea if they're allan (spelling lol??) key screws or just bolts?..

matttttt · Borekit Bruiser Joined: 24 Dec 2004 Karma :

I was also wondering... is it possible for a picture of the correct set up for that casing to be posted... may be asking a bit much but it's worth a try... any help much appreciated and many thanks for your info already guys, nice one Very Happy

Kye · Scooby Slapper Joined: 13 Sep 2004 Karma :

binge · Emo Kiddy Joined: 03 Jul 2004 Karma :

I bet it dont half go! There is nothing to the Zips...