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Is it worth buying premium unleaded.

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Is it worth it?
Yes
18%
 18%  [ 11 ]
No
81%
 81%  [ 47 ]
Total Votes : 58

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ItsNylo
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PostPosted: 14:20 - 30 Jul 2018    Post subject: Is it worth buying premium unleaded. Reply with quote

Hello, I was wondering if it is worth buying premium unleaded for a Derbi Senda 50 2017 (Supermoto)

I was wondering as its a 50cc 2 stroke so it might make it run a bit better as far as performance. but I'm not sure if it worth the extra money per tank as it only has 55mpg ish and a 1.5 gallon tank so it needs filling up after 80 miles ish. so it will work out a lot more money per month.
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grr666
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PostPosted: 14:23 - 30 Jul 2018    Post subject: Reply with quote

No it's not. Save your money for the biketrader ad.
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Ste
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PostPosted: 14:26 - 30 Jul 2018    Post subject: Reply with quote

Not in the slightest.
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arry
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PostPosted: 14:31 - 30 Jul 2018    Post subject: Reply with quote

What is it, ten pence a litre more? You'd get what then, a 6-7 litre tank. You'd have thought if one were interested in knowing the answer one would be able to throw a quid at it to find out for themselves - but since you're asking here instead; no it's utterly pointless.
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johnsmith222
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PostPosted: 15:34 - 30 Jul 2018    Post subject: Reply with quote

not worth it for you. Just fill up with whatever is the cheapest station on your commute or just slightly off of it.
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Wonko The Sane
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PostPosted: 15:37 - 30 Jul 2018    Post subject: Reply with quote

on both my 600cc not quite sportsbikes I've noticed a slightly longer run between filling up and the bike's felt a little smoother on super compared with regular, if I need to fill up and it's an option then I'll use it, if not then I'll chuck in whatever.

on a 50cc, nah, just bung whatever in
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SamFishlock
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PostPosted: 17:58 - 30 Jul 2018    Post subject: Reply with quote

I believe it has been proven many times that it provides absolutely no benefit, unless your bike is mapped on premium fuel and therefore the injectors know to work differently to make the most of the increased octane. I am however no expert on this and will happily be corrected.
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Courier265
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PostPosted: 19:01 - 30 Jul 2018    Post subject: Reply with quote

premium unleaded for older bikes yes, modern bikes NO.

Teflon to post in 3, 2, 1....... Puke
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waffles
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PostPosted: 19:17 - 30 Jul 2018    Post subject: Reply with quote

I have occasionally used it in the gixer when I was feeling flush, never noticed any difference to be honest.
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c_dug
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PostPosted: 20:26 - 30 Jul 2018    Post subject: Reply with quote

High Octane fuel is worth it on some 2 strokes, necessary even, but unless you've tuned the nuts off of it, yours won't be one of them.

No, an exhaust doesn't count as tuned the nuts off.
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Old Git Racing
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PostPosted: 21:17 - 30 Jul 2018    Post subject: Reply with quote

Use it on my 2 stroke because of the compression/tuned engine. Don't use it on my Beemer except when laying it up for the winter, brim both bikes with super when laying up, run it through the carbs and when you come to use it next year there aint no gungy shit blocking carbs and fuel injection up. Plus I can afford it.

OGR
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MCN
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PostPosted: 21:18 - 30 Jul 2018    Post subject: Reply with quote

Courier265 wrote:
premium unleaded for older bikes yes, modern bikes NO.

Teflon to post in 3, 2, 1....... Puke


Not a Tefers post but I run two bikes and I only put super unleaded in them.

Both bikes can use it.

Work that out.
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stevo as b4
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PostPosted: 21:46 - 30 Jul 2018    Post subject: Reply with quote

I use V-power in my 125, and accept that I'm losing power when it was standard. But it's supposed to be ethanol free in most parts of the UK. And ethanol isn't friendly to older bikes fuel systems and tanks etc.

I'll soon have the ability to have custom programmed ignition tables, and the compression ratio might rise fractionally when I set up my squish clearance. I should be able then to compensate for the power reducing effect of SUL.
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Courier265
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PostPosted: 22:00 - 30 Jul 2018    Post subject: Reply with quote

MCN wrote:
Courier265 wrote:
premium unleaded for older bikes yes, modern bikes NO.

Teflon to post in 3, 2, 1....... Puke


Not a Tefers post but I run two bikes and I only put super unleaded in them.

Both bikes can use it.

Work that out.


what's to work out? all bikes can run on super unleaded.
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Old Git Racing
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PostPosted: 22:24 - 30 Jul 2018    Post subject: Reply with quote

stevo as b4 wrote:


I'll soon have the ability to have custom programmed ignition tables, and the compression ratio might rise fractionally when I set up my squish clearance. I should be able then to compensate for the power reducing effect of SUL.


SUL reducing power, why would that be then? It wont give you power with an untuned motor or lose power, in an untuned motor it is just fuel to make it go, no worse than unleaded, but definitely wont lose you power.

Get beyond a certain squish clearance and you have to use it, go even further and you are into avgas territory, but its the compression, not the fuel that does it. Same with programmable ignition, I know I've got one. Normal fuel will detonate before the piston gets to the advance you need to make it work right because they make them to suit markets with shit petrol. In untuned bikes its a waste but using it wont reduce power, just your ability to get the next round in.

OGR
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Kentol750
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PostPosted: 22:37 - 30 Jul 2018    Post subject: Reply with quote

Yes, when it gets stolen and set on fire, it'll burn brighter!
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Wave2k
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PostPosted: 04:54 - 31 Jul 2018    Post subject: Reply with quote

Some cars require it , so I voted yes on a count of I don't want knock on my tuned twin turbocharged engine .

If your car doesn't ( most don't ) you are literally burning money .
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rpsmith79
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PostPosted: 06:21 - 31 Jul 2018    Post subject: Reply with quote

Wave2k wrote:
Some cars require it , so I voted yes on a count of I don't want knock on my tuned twin turbocharged engine .

If your car doesn't ( most don't ) you are literally burning money .


And a lot of cars can happily work on both, and adjust timings to suit

My old 1992 Gen 5 Celica had a knock sensor and would adjust timings to suit the fuel type (or so the owners manual claimed)

You don't need some highly strung turboed motor to benefit, you only need an engine with a relatively high compression to take advantage of SUL

Oh, and the OP's question was, is it worth putting Super Unleaded in his 50cc Derbi Senda, not is it worth putting SUL in someone else's highly strung car
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MCN
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PostPosted: 06:34 - 31 Jul 2018    Post subject: Reply with quote

Courier265 wrote:


what's to work out? all bikes can run on super unleaded.


Are you a bodyform sock?

They can't use the full potential unless the engine can use the higher grade.

To use different RON the engine needs to be tuned for it.
Some engines can adjust to suit automatically.

The extra power should allow extra mileage bit we only have the fuel manufacturer say-so to go on.
Some of the benefits people quite are anecdotal and not true evidence based results under strict control conditions.
This is perhaps where the problem lies.

There is claimed to be improved cleaners in super fuel which may be good too but the % of benefit is possibly negligible for most folk.
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Copycat73
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PostPosted: 07:41 - 31 Jul 2018    Post subject: Reply with quote

i filled my ZZR14 on the continent with a 100 ron. unleaded.. frankly the price was ridiculous.. there was an improvement in consumption... +2mpg .. 47 to 49 .. and it did run smoother .. however there was an injector off .. subsequently replaced ...
as for acceleration and top end .. i could not say ..

over the winter i fill my bikes with higher octane simply because of the lower ethanol content and therefore water contamination....
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u33db
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PostPosted: 07:56 - 31 Jul 2018    Post subject: Re: Is it worth buying premium unleaded. Reply with quote

ItsNylo wrote:
Hello, I was wondering if it is worth buying premium unleaded for a Derbi Senda 50 2017 (Supermoto)

I was wondering as its a 50cc 2 stroke so it might make it run a bit better as far as performance. but I'm not sure if it worth the extra money per tank as it only has 55mpg ish and a 1.5 gallon tank so it needs filling up after 80 miles ish. so it will work out a lot more money per month.


No it will make no difference to your bike except cost you about a £1 more at each fill up.

I'm guessing you are young person so stuck will small CC bikes?

If you want performance then a) derestricted your bike if it hasn't already been done then b) buy a exhaust and/or big bore kit.

Or better still buy a 125 that will be faster, better on fuel, safer, be more reliable and also have some resale value.
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skatefreak
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PostPosted: 08:17 - 31 Jul 2018    Post subject: Reply with quote

u33db wrote:

I'm guessing you are young person so stuck will small CC bikes?

If you want performance then a) derestricted your bike if it hasn't already been done then b) buy a exhaust and/or big bore kit.

Or better still buy a 125 that will be faster, better on fuel, safer, be more reliable and also have some resale value.


De-Restricted NSR 125 (or any sports replica 2 stroke), or DT125...

Gobs more powaahhh than you'd get from a tuned/ported/bored out 4 stroke... 50-75mpg if you really really behave (+ 2 smoke oil).

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u33db
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PostPosted: 08:42 - 31 Jul 2018    Post subject: Reply with quote

Yeah or KMX125.

If you can find a decent one though...i sold mine back around 2014 and haven't seen another decent one, at least not up this way.
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ItsNylo
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PostPosted: 08:54 - 31 Jul 2018    Post subject: Re: Is it worth buying premium unleaded. Reply with quote

[quote="u33db"][quote="ItsNylo"]Hello, I was wondering if it is worth buying premium unleaded for a Derbi Senda 50 2017 (Supermoto)

I was wondering as its a 50cc 2 stroke so it might make it run a bit better as far as performance. but I'm not sure if it worth the extra money per tank as it only has 55mpg ish and a 1.5 gallon tank so it needs filling up after 80 miles ish. so it will work out a lot more money per month.[/quote]

No it will make no difference to your bike except cost you about a £1 more at each fill up.

I'm guessing you are young person so stuck will small CC bikes?

If you want performance then a) derestricted your bike if it hasn't already been done then b) buy a exhaust and/or big bore kit.

Or better still buy a 125 that will be faster, better on fuel, safer, be more reliable and also have some resale value.[/quote]

yeah im stuck with a 50cc for about 1 year and its fully derestricted.
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Wave2k
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PostPosted: 16:19 - 31 Jul 2018    Post subject: Reply with quote

rpsmith79 wrote:


And a lot of cars can happily work on both, and adjust timings to suit

My old 1992 Gen 5 Celica had a knock sensor and would adjust timings to suit the fuel type (or so the owners manual claimed)

You don't need some highly strung turboed motor to benefit, you only need an engine with a relatively high compression to take advantage of SUL


My twin turbo aside you are mostly correct, however then you run into the issue of losing power from the manufacturers claimed output and at this point you must ask yourself why you even purchased a performance car in the first place.

Which brings me back to my original point .

If it doesn't require it, don't use it.
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