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How to de-restrict Yamaha Aerox?

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Mac
Renault 5 Driver



Joined: 02 May 2004
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PostPosted: 21:32 - 07 Jun 2004    Post subject: How to de-restrict Yamaha Aerox? Reply with quote

Heya,

I've been to a number of garages, and asked the simple question "Do you know how to de-restrict this scooter *points to scooter*".

"No, i dont know how to do 'em".

Soo, my friend's dad owns his own motor garage, mainly with cars, but he likes to do bikes as well. I asked him if he knew how to de-restrict my Aerox and he said "Well, it could be this pipe here which comes out of your exhaust and is welded shut, that could probably be whats restricting it". So then i said "Well most of the scooters have just a restrictor in the exhaust which restricts the power", but he said he wasnt sure and i would need to get information about it before he did anything, as he didnt want to waste my money taking off the pipe and then it making no different.

So, does any know/have any information or links on how to de-restrict a Yamaha Aerox? 30MPH is really TOO slow for me, i'm more of a hinderence than a safety.

Big thanks for any responce, cheers!

Mac.
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badlydamaged
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PostPosted: 21:38 - 07 Jun 2004    Post subject: Reply with quote

(link removed due to request)
This is a good link for derestring scooters, wish I could be of more help, but its a starting point.
That little welded pipe, the restrictor pipe as ive heard it called is probably the restrictor on your exhaust, I cut mine off, and welded the hole up, but didn't notice much difference (probably because the gear ratios on my old scooter didn't let it go abbove 35mph), then again, a mate of mine with a SR 50 did the same to his bike and claims he can get 65mph out of it now, dunno how true that is but it must make some difference.
Cheers, Jonathan
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Last edited by badlydamaged on 08:13 - 19 Sep 2019; edited 1 time in total
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Mac
Renault 5 Driver



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PostPosted: 10:57 - 08 Jun 2004    Post subject: Reply with quote

thanks damaged, at least its a start.

Anyone else help me out? i really could getting it sorted out and de-restricting sooner rather than later.
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Visitor Q
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PostPosted: 00:12 - 09 Jun 2004    Post subject: Reply with quote

AFAIK almost all 50's are restricted in the exhaust, and generally its A) that expansion pipe that you can cut off, weld shut, then weld back on again so it looks restricted or B) a restrictor/washer in the manifold exit of the exhaust (as in my old 50) that restricts pressure in the exhaust making it run less efficiently. TBH tho most people on this forum get the arse with dealing with race rep 125 q's and scooter q's. As do i, but i agree, restricted 50's are a menace, however aerox's derestricted do 50 easily enough derestricted so dont be a plank, major headline in local paper involved an aerox spanking into a nova.
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M1ke
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PostPosted: 02:07 - 09 Jun 2004    Post subject: Reply with quote

It will be a restrictive washer welded into the inside of your exhaust near the end (near engine) Just take the exhaust off and you should see it there.

You will need to drill/hammer/poke it to get the bugger out.
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nsr125.98
Borekit Bruiser



Joined: 19 Mar 2004
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PostPosted: 13:12 - 10 Jun 2004    Post subject: Reply with quote

There is also a washer that restricts the movement of one of the pulleys in the drive belt. If you remove this it should gain an extra 5-10 mph. Thumbs Up
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Old Thread Alert!

There is a gap of 3 years, 322 days between these two posts...
aeroxboi This post is not being displayed because it has a low rating (Redundant). Unhide this post / all posts.

5v3d3b0
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PostPosted: 18:06 - 27 Apr 2008    Post subject: Reply with quote

Get a yasuni
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hmmmnz
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PostPosted: 18:15 - 27 Apr 2008    Post subject: Reply with quote

good on ya for resurrecting a 4 and a half year old thread
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ms51ves3
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PostPosted: 18:15 - 27 Apr 2008    Post subject: Re: Exhaust Reply with quote

aeroxboi wrote:
alrite Very Happy i am new to this forum and i am woundering what exhaust you would recommend i have a yamaha aerox 2007, i was thinking about getting either a leo vinci zx or a giannelli reverse !. What one would you go for out of the two or do u recommend any other exhausts ? i need help despritly lol
thanks warren


1) Make your own thread.
2) Don't use bold, it annoys people on the forum.
3) Use spell checker.
4) The standard exhaust is the best, aftermarket ones sound awful.
5) Welcome to the forum Smile
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aeroxboi
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Joined: 27 Apr 2008
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PostPosted: 10:51 - 28 Apr 2008    Post subject: exhaust Reply with quote

Svedebo wrote:
Get a yasuni



what yasuni model would you reccomend ? and do they cum cheaper then £160 ? as iam on a budget !
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Joeb46
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PostPosted: 17:49 - 28 Apr 2008    Post subject: Reply with quote

chives lol leave the poor chav alone he`s new Very Happy
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5v3d3b0
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PostPosted: 18:11 - 28 Apr 2008    Post subject: Reply with quote

They go cheaper than that here in Spain, but it is a Spanish make, so maybe they're more expensive in the UK. I'm not too sure on what model you need. Depends on what else you're planning to do to the bike. Depending on what degree of tuning you want to achieve different pipes will suit your setup
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truslack
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PostPosted: 20:40 - 29 Apr 2008    Post subject: Re: Exhaust Reply with quote

aeroxboi wrote:
1) Make your own thread.
2) Don't use bold, it annoys people on the forum.
3) Use spell checker.
4) The standard exhaust is the best, aftermarket ones sound awful.
5) Welcome to the forum Smile[/quote ]


Who are you the boss of the fukin forum Confused
your a twat lk if i wana use bold i will ok and i can spell if i want 2 ok mate so fuk up
and ur lil gimp of a friend iam not a fukin chav orite pal ! Very Happy
JACKASS !!! Middle Finger Middle Finger Middle Finger Middle Finger Middle Finger Middle Finger Thumbs Down Exclamation

Thanks 2 every 1 that has helped unlike these 2 morons !!


A) Learn how to quote
B) He was only warning you about bold text, people round these parts don't take a liking to people who type in all bold
C) There is a spell checker for a reason, your spelling is crap, at least put some effort into typing out in proper Queen's English, people may put some effort in to help you.
D) You called Mark and Joe morons/twats/gimps, so fuck off and die in a hole.
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Last edited by truslack on 20:41 - 29 Apr 2008; edited 2 times in total
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ms51ves3
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PostPosted: 20:40 - 29 Apr 2008    Post subject: Re: Exhaust Reply with quote

aeroxboi wrote:
Who are you the boss of the fukin forum Confused
your a twat lk if i wana use bold i will ok and i can spell if i want 2 ok mate so fuk up
and ur lil gimp of a friend iam not a fukin chav orite pal ! Very Happy
JACKASS !!! Middle Finger Middle Finger Middle Finger Middle Finger Middle Finger Middle Finger Thumbs Down Exclamation

Thanks 2 every 1 that has helped unlike these 2 morons !!


lololololol Joe, watch out, he might get his bois on us Laughing

You funny fucker.

Aeroxboi, can I marry you? I think you're amazing Wink
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andys675
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PostPosted: 23:14 - 29 Apr 2008    Post subject: Reply with quote

just doing the exhaust will screw your bike up eventually

the exhaust restrictor slows the engine speed, so you get rid of that and your engine now runs flat out 10,000rpm at 30mph instead of about 6500rpm, because you've only partially derestricted it the back wheel cannot spin any faster as thats the other restriction, to make the back wheel spin faster you need to suss out what is restricting the pulley/belt/wheel speed then you will get the increased mph which you desire, if you just do the exhaust the engine will wear out much more quickly than normal, get much hotter in use and probably seize up especially if you use cheap 2 stroke oil
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ms51ves3
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PostPosted: 07:39 - 30 Apr 2008    Post subject: Reply with quote

andys350 wrote:
just doing the exhaust will screw your bike up eventually

the exhaust restrictor slows the engine speed, so you get rid of that and your engine now runs flat out 10,000rpm at 30mph instead of about 6500rpm, because you've only partially derestricted it the back wheel cannot spin any faster as thats the other restriction, to make the back wheel spin faster you need to suss out what is restricting the pulley/belt/wheel speed then you will get the increased mph which you desire, if you just do the exhaust the engine will wear out much more quickly than normal, get much hotter in use and probably seize up especially if you use cheap 2 stroke oil


Everything you have just said is complete and utter rubbish.
If you just de-restrict the exhaust the revs will probably only increase by 500rpm as it is already running near max revs when you are going 30mph. The only thing that is really restrcting your speed is the washer in the variator. The exhaust restriction is just a power restriction which. If you only de-restrict the variator, as there is a power restriction still on the engine the scooter will not be able to get up to 45mph. It will stay around 38mph give or take.

The restriction in the variator doesn't actually restrict how fast the rear wheel goes but how close the 2 halves of the pulley come together. It is just a smaller washer that is in between. (In restricted form, when you hit 30mph you can feel the 2 halves of the pulley hit it)

If you de-restrict the exhaust the bike would probably go 34mph but will accelerate upto that speed faster.

It would never overheat as the way scooters are cooled is not by how fast you are going but the fan that is connected to the crank. You could rev the scooter at standstill constantly and it would never overheat as the fan speed is directly linked with the RPMs.
The fan thrusts air through a duct, up and across the engine cooling it down.

Cheap 2 stroke oil is perfectly fine unless you are running a tuned scooter. I've used cheap (£2 litre) 2 stroke oil in my scooter since I got it and have covered 2500km. My dad has used it in his Peugeot Vivacity 100cc for 11,500km.
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pimped_aerox
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PostPosted: 08:10 - 30 Apr 2008    Post subject: Reply with quote

right the exhaust is restricted either an extra pipe which needs to be cut off or theres a little cone in the end of the pipe the end nearest the engine. second is there is a washer in the variator which needs to come out. also the carb could be restricted so u need a bigger but not by much main yet.

hope this helps
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ms51ves3
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PostPosted: 08:33 - 30 Apr 2008    Post subject: Reply with quote

pimped_aerox wrote:
right the exhaust is restricted either an extra pipe which needs to be cut off or theres a little cone in the end of the pipe the end nearest the engine. second is there is a washer in the variator which needs to come out. also the carb could be restricted so u need a bigger but not by much main yet.

hope this helps


As far as I am aware that's correct. I think it is a pipe on Yamahas.
When you de-restrict the exhaust you will need to go up about 4 jet sizes on the main jet.

If you go on YouTube there is a guy that shows you how to de-restrict the variator on a Yamaha. It's very helpful. I'll try and find it later on.
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Joeb46
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PostPosted: 10:23 - 30 Apr 2008    Post subject: Reply with quote

mega lolz.
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ms51ves3
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PostPosted: 11:32 - 30 Apr 2008    Post subject: Reply with quote

Here is the video. It is for a Giggle (C3) Yamaha but it shows you what you have to do. I used it to de-restrict my CW50.

Clicky

It's in 5 parts Thumbs Up
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pa_broon74
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PostPosted: 15:15 - 30 Apr 2008    Post subject: Reply with quote

Not sure how you derestrict a scooter, but I imagine its no longer an issue for the OP. If he hasn't managed it within the past four years, I don't think he ever will... Laughing

This thread is like a time capsule. In ten years time we'll be resurrecting threads about how great 98 R1's where and scoffing at our own youthful innocence.

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ms51ves3
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PostPosted: 16:03 - 30 Apr 2008    Post subject: Reply with quote

pa_broon74 wrote:
Not sure how you derestrict a scooter, but I imagine its no longer an issue for the OP. If he hasn't managed it within the past four years, I don't think he ever will... Laughing

This thread is like a time capsule. In ten years time we'll be resurrecting threads about how great 98 R1's where and scoffing at our own youthful innocence.

Thumbs Up


It's more for Aeroxboi. He decided to bring up a 4 year old thread and then call me a cunt for telling him to start his own thread Rolling Eyes

I'm still trying to help though.
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andys675
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PostPosted: 22:51 - 02 May 2008    Post subject: Reply with quote

ms51ves3 wrote:
andys350 wrote:
just doing the exhaust will screw your bike up eventually

the exhaust restrictor slows the engine speed, so you get rid of that and your engine now runs flat out 10,000rpm at 30mph instead of about 6500rpm, because you've only partially derestricted it the back wheel cannot spin any faster as thats the other restriction, to make the back wheel spin faster you need to suss out what is restricting the pulley/belt/wheel speed then you will get the increased mph which you desire, if you just do the exhaust the engine will wear out much more quickly than normal, get much hotter in use and probably seize up especially if you use cheap 2 stroke oil


Everything you have just said is complete and utter rubbish.
If you just de-restrict the exhaust the revs will probably only increase by 500rpm as it is already running near max revs when you are going 30mph. The only thing that is really restrcting your speed is the washer in the variator. The exhaust restriction is just a power restriction which. If you only de-restrict the variator, as there is a power restriction still on the engine the scooter will not be able to get up to 45mph. It will stay around 38mph give or take.

The restriction in the variator doesn't actually restrict how fast the rear wheel goes but how close the 2 halves of the pulley come together. It is just a smaller washer that is in between. (In restricted form, when you hit 30mph you can feel the 2 halves of the pulley hit it)

If you de-restrict the exhaust the bike would probably go 34mph but will accelerate upto that speed faster.

It would never overheat as the way scooters are cooled is not by how fast you are going but the fan that is connected to the crank. You could rev the scooter at standstill constantly and it would never overheat as the fan speed is directly linked with the RPMs.
The fan thrusts air through a duct, up and across the engine cooling it down.

Cheap 2 stroke oil is perfectly fine unless you are running a tuned scooter. I've used cheap (£2 litre) 2 stroke oil in my scooter since I got it and have covered 2500km. My dad has used it in his Peugeot Vivacity 100cc for 11,500km.



what do you know? i'm a trained peugeot mechanic, i've sold hundreds and derestricted hundreds over the years

i was going to write a huge essay to argue my point, but like most scooter owners you're not going to listen, i mean wow 2500km, you really know you're stuff don't you!
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The last post was made 17 years, 66 days ago. Instead of replying here, would creating a new thread be more useful?
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