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motorhispania
07-30-2008, 05:50 PM
hi just wondering how much difference to top end a 70cc mallossi bore kit will add? at the minute with me gearing im almost touching 70mph and got bore kit cheap and not to sure if to have it fitted and tuned?
cheers ash

mx50boy
07-30-2008, 05:53 PM
almost touching 70mph


thats bollocks


but ye get it fitted it will be well worth the time fitting it and you will get alot more power

keeton.
07-30-2008, 06:03 PM
it is possible

mx50boy
07-30-2008, 06:06 PM
suppose so
down a hill tucked well in

Sududri134
07-30-2008, 06:12 PM
it's well possible down a hill..

Just cause yours cant do it, it doesn't mean it's impossible for others..

By the way, do you have a link to where you could buy such an malossi 70cc kit? I've only seen the 80cc ones?

Not saying it isin't out there.. Just wanna see it :)

motorhispania
07-30-2008, 06:38 PM
it touchs 70mph on straight gearing is 14-50, got sports exhaust, 81 jet its with me tucked it it goes back on the clock at 0mph thats at 11,000rpm

mx50boy
07-30-2008, 06:40 PM
just out of interest is your back sprocket the same as the RS50's? with 5 bolts holding it on?

luigi1991
07-30-2008, 06:46 PM
thread smells funny

motorhispania
07-30-2008, 06:51 PM
no mate smells fine yes it is 5 bolts. before u say it yes my speedo is wrong cause tells me doing 0mph when i fix my handlebar ill get a video for you lot;)

mx50boy
07-30-2008, 06:53 PM
do you know whether you can get 49t sprockets?

because i want one for mine

motorhispania
07-30-2008, 06:57 PM
http://www.igm-uk.co.uk/index.php?page=0&act=viewCat&catId=50 has a load on or just keep an eye on ebay or try here http://www.jtsprockets.com/

motorhispania
07-30-2008, 07:02 PM
i got the bore kit off ebay theres as link to the gasket set to show they are really lol https://www.ve-supermarket.co.uk/catalogue.php?search_group=156&search_lists=8&search_make=69&search_model=583

motorhispania
07-30-2008, 07:12 PM
malossi 70cc bore kit near bottom of page
http://www.bike-spares.co.uk/acatalog/APRILIA_RS_50_CLICK_HERE.html

RS01
07-30-2008, 07:54 PM
Ive got a 70 kit, i think lol

williamr
07-31-2008, 02:39 AM
BBK gives better mid range, but very little on top speed. YOu need to team it with a good pipe and bigger carb.

70 from a 50 on the flat, in any sort of road going trim, is BS.

Rob

SpeedEng
07-31-2008, 07:13 AM
not to poo on anyone but 14/50 = 67-68mph @ 12k

your speedo is really off if your going 70 @ 11k

keeton.
07-31-2008, 07:22 AM
you'll need a bigger carb and the 15t front will improve the topend while still giving you mid range and accelaration from BBK

the-heft
07-31-2008, 09:58 AM
Someone post that speed/gearing chart in its own thread and sticky it. At least them people will have something to give a relistic estimate of their speed.

motorhispania
07-31-2008, 11:28 AM
my speedo says 0mph cause it goes all the way round and back on. once ive fitted my handlebar ill get a video for you lot. it off a sat nav taped to my arm lol. i dont know if it had any tuning before i had it cause ive not found no one in my area who can touch me. raced cbr125 and beat that so the bike does shift abit.

williamr
07-31-2008, 03:51 PM
You could start by learning how to use a sat nav, which isn't that accurate anyway, contrary to popular belief.

The only way you'd take a CBR125 is if the other guy wasn't trying or if you were riding dangerously. From your posts I can guess which. I can also see why you'd have problems reading a sat nav.

Are you old enough to ride a derestricted bike? It's not too important if you aren't, because I have a suspicion that you'll crash soon.

Rob

motorhispania
08-01-2008, 05:23 PM
naa not old enough but i am in 6 days:D

bourney2007
08-02-2008, 06:36 AM
AAACCHHOOOOOOO!!!!

sorry i'm allergic to bullshit

(before anyone says, yes i did get that from i-robot :D) lol



bullshit. Your bike does not do 70mph, even down a hil tucked in it dosn't.
The speedos bullshit alot so you can knock around 10mph off that, maybe more.

a bore kit won't really make all that much difference. Not worth it in my opinion.

motorhispania
08-04-2008, 05:27 PM
today raced mates ybr 125 and i edge that by about 1 mph on top end thats with him liein over it and i was aswell so who knows:S

luigi1991
08-05-2008, 06:33 AM
shut up.
man up.
stop wasting peoples time.
your bike does not do 70mph.

motorhispania
08-05-2008, 08:25 AM
well it beats a ybr on top end so wot ever that does mine bettas
so if u dont belive what it does ill get a video to prove it also
i dont know why it only revs to 11,000 once it revved to 12,000 and would a 28mm carb be to big need to know asap as can get 1 cheap atm
cheers ash

williamr
08-05-2008, 09:02 AM
A brain might be a more useful purchase than a 28mm carb.

That's too big for your bike, btw, but it might fit your mouth.

Rob

motorhispania
08-05-2008, 09:05 AM
god i love you lot
naa 32mm might fit my mouth:P

motorhispania
08-05-2008, 09:10 AM
i want a 21mm but would 26mm be better

bourney2007
08-05-2008, 10:34 AM
i want a 21mm but would 26mm be better


19mm for 50cc kit.
21mm for bbks. Anything bigger will be difficult to set-up and not really give all that much performance increase.


Please let us know how you get on once the carb and bbk are fitted. Should be nudging close to 90-100mph then eh?:rolleyes:

Aprilia af1
08-05-2008, 12:39 PM
19mm for 50cc kit.
21mm for bbks. Anything bigger will be difficult to set-up and not really give all that much performance increase.


Please let us know how you get on once the carb and bbk are fitted. Should be nudging close to 90-100mph then eh?:rolleyes:




you can reach those speeds with the right gearing on the older style derbi's and a custom made high reving exhaust.

Sududri134
08-05-2008, 12:42 PM
Originally posted by Aprilia af1
you can reach those speeds with the right gearing on the older style derbi's and a custom made high reving exhaust.

Aprilia af1, I recommend you to put your flame-suit on ;)

cause you're gonna get FLAMED :bump:

Aprilia af1
08-05-2008, 12:43 PM
i want a 21mm but would 26mm be better

21mm carb would be better on petrol,easier to adjust and set up properly and it will give good all round performance.
where as the 26mm carb will use more petrol, be a little bit harder to set up and may need re adjusting at times but will give better low down power, and may inrease the revs, i have seen and heard of 30mm carbs being used on old 50cc racers but not on the am6 engines. hope this helps.

Aprilia af1
08-05-2008, 12:50 PM
Aprilia af1, I recommend you to put your flame-suit on ;)

cause you're gonna get FLAMED :bump:


ok will do lol. I was being serious though, i've seen the video of a derbi doing 90 in 5th and 98+ in 6th with sat nav or true reading digital speedo, also my brother knows the person and he sold him the exhaust he was using which is a high reving custom pipe which reved past 13000 rpm and had a power band at about 8000rpm and lasted till and past 12000rpm easy. also this person had 16/42 gearing, 80cc ported malossi kit, a mapped electronic ignition, forced air induction ,a 28mm carb, and a modified reed block.

motorhispania
08-05-2008, 12:52 PM
like i said before i dont know if its been tuned or anyfing before i got it cause its bloody quick

matty49
08-05-2008, 01:33 PM
like i said before i dont know if its been tuned or anyfing before i got it cause its bloody quick

Quick??

ROFL.

Someone is getting bum raped.

motorhispania
08-05-2008, 04:06 PM
so lets here why my bike does not go that quick
and next how can i prove it does?

Rs50_2007kris
08-05-2008, 04:15 PM
because its 50cc ?

luigi1991
08-05-2008, 04:15 PM
its a 50 there all the proof you need that the bike is slow.
sorry but your going to lose.

motorhispania
08-05-2008, 04:29 PM
i honestly dont know why it does it ever since iv had it ive changed the sprockets n jets it beats new mallossi senda, new gpr, old rs 50 and ybr 125 on top end so :WTF:

Rs50_2007kris
08-05-2008, 04:36 PM
maybe its already got a bore kit?

motorhispania
08-05-2008, 04:40 PM
naa have checked it 49cc i fink the carb is standard i know the air box is cause it bloody massive i know its set up right thou cause runs fine only smokes when cold but it dont do that for very long

motorhispania
08-05-2008, 04:45 PM
it stops revvin at 11,000 only once its keeped going i changed spark plug to ngk iridium

luigi1991
08-05-2008, 04:48 PM
maybe its ur mind,
or ur friends are toying with u lol

motorhispania
08-05-2008, 04:50 PM
not when he is pissed off cause he cant catch a 50 lmao
anyone know what the exhaust iv got is like

Rs50_2007kris
08-05-2008, 04:56 PM
I've got it... it's because YBR 125s are 4stroke and actually look like this

http://www.bikez.com/pictures/yamaha/2007/24280_0_1_2_ybr%20125_Image%20credits%20-%20Yamaha.jpg


FUCK

motorhispania
08-05-2008, 05:05 PM
he got it in black and my bike just edges it on top end
could it of been polished and ported or anything

Rs50_2007kris
08-05-2008, 05:07 PM
yeah but his is a 125 4stroke which sucks ass, my mum has a 125 4stroke that looks similar to that and it tops out at about 65mph, the yzf-r125's top speed is 80mph and thats 4stroke, and thats quite aero dynamic, liquid cooled, etc etc..., also your speedo is probably out a few mph soo.. you're doing just over 65 which is possible

HOORAY we got to the bottom of this 4page long investigation

motorhispania
08-05-2008, 05:14 PM
but its still at 11,000 so why is it higher than that chart thing btw everyone will still find something to moan at lol:kidding:

motorhispania
08-05-2008, 05:20 PM
i know my speedo is out if it was right id be doing like 90mph lol ive never said thou it was right.... all ive said bout that it just that it goes back on at 0

Aprilia af1
08-05-2008, 05:33 PM
Have you tried getting it clocked by a car or something? because they are always better than a 50cc speedo. Also have you got a video of you driving the bike in a positon where you can see the road and things as you pass by, as that would help to see what sort of speeds you're doing.

motorhispania
08-05-2008, 05:37 PM
been clocked by cars at 65 n that was not on at 0 so dont know
can see the speedo cause the screens it not very big when i get handlebar fitted ill get a video cause snapped handlebar trying to wheelie it lol

Aprilia af1
08-05-2008, 05:50 PM
lol your handlebars aren't very strong then. i surpose 65 could be possible with a 50cc and the gearing you have and pulling 11,000 as i know someone with a rieju rs1 which does 60mph or a little bit more with a 70cc and 11/44 gearing at 9,000/10,000rpm. i just wouldn't have thought your 50cc could pull the gearing that well, but it can be done as my bro has a derbi gpr50, 50cc 19mm carb and 15/52 gearing and keeps up with me and he's in 5th.

motorhispania
08-05-2008, 05:53 PM
it pulls it ok though 1,2,3,4 5 has a lil flat spot and 6 will only pull with no wind or back wind or me laying over it

Aprilia af1
08-05-2008, 06:10 PM
That's about the same as my brothers derbi although that pulls 6th gear quite well, but the engines are a little different with different final gear ratios. so i believe you're doing 60/65mph as it is possible with a 50, i've seen it.
with a big bore kit 70cc or 80cc you'll have more power but maybe not more revs,but the extra power will let you change the gearing for more top end speed.
When you getting your handle bar replaced? as i'd like to see a video of your bike running/riding.

motorhispania
08-05-2008, 06:23 PM
u will see the bike running ill do one before put bore kit on cause gonna get it tuned but everyone will moan how i ride lol
i have the attitude live everyday like your last :D
im glad im used to the bike cause have pretty good control over what i do
i wonna learn how to wheelie it not the little shitty sit there rev the bollocks out of it and drop the clutch
handlebar is on but not very safely that why atm im taking it easy

Aprilia af1
08-05-2008, 07:09 PM
Well it's up to you how you ride, you only learn how to control it by riding the bike, but you also have to be more careful at high speeds. i think you might need a bigger cc bike to pull proper wheelies, but may be able to pull something of with a bore kit and lower gearing. If your handle bar isn't on safely then you don't want it coming off when pulling up/slowing down for roundabouts or traffic lights lol.could be dangerous.:eek:

motorhispania
08-05-2008, 07:18 PM
handle bar is safe when my weight is on it but not when off it lol
ive gotta wait till go back to college to fix it and think about makin them out of steal
ive had it 8 months and done just under 15000 miles told insurance was only going to do 8000 but dint relise how much id come to love my bike lol
when i fit the bore kit will i need to change my reeds or get uprated clutch or anything and also can u get 21mm carb that the standard air box will fit?
cheers ash

SpeedEng
08-06-2008, 06:10 AM
not to poo on anyone but 14/50 = 67-68mph @ 12k

your speedo is really off if your going 70 @ 11k

again
gearing does not lie!
gearing will always tell you the top speed you can do @ xx-rpm!
14/50 @ 11k = 63ish

SpeedEng
08-06-2008, 06:15 AM
when i fit the bore kit will i need to change my reeds or get uprated clutch or anything and also can u get 21mm carb that the standard air box will fit?
cheers ash

reeds dont have to be changed unless you have a ton of miles or they are weak with the new bbk

uprated clutch will need to be changed soon after a bbk I get away with about 300 miles before it was unridable

21mm carb will not work with the airbox
I think the largest you can use with the airbox is a 17.5

the-heft
08-06-2008, 06:34 AM
Whys that? Due to the actual connection between the carb and the airbox not fitting, meaning you would have to make something yourself?

I ask because Micah uses the standard airbox on all his monstrous engines.

SpeedEng
08-06-2008, 07:10 AM
Whys that? Due to the actual connection between the carb and the airbox not fitting, meaning you would have to make something yourself?

I ask because Micah uses the standard airbox on all his monstrous engines.

correct .. (not make one but rig it alittle)

you can get it to fit of course, alttle bit or alot more is involved (depending on carb)

motorhispania
08-06-2008, 05:40 PM
ive been told the standard air box is the best cause overs when it rain they play up but would this one do the same cause the filter is covered
http://adrenalin-pedstop.com/p/DOPPLER-TUNING-SPORTS-FILTER-F-708.aspx

ahmadsuhaib
06-28-2019, 07:23 AM
Hey I hope this helps someone! You guyz can also look at https://www.jlsprockets.com/ as Jue Lang is expanding itself globally after collaborating with DID Chains in China.
Jue Lang manufactures sprockets, chains as well as many other things and sell its products across the world.
Now JL Sprockets is giving its distributorship. Check it out on the website. Click on the above link.


Thanks!