Author Topic: Variator "Shifting"  (Read 7239 times)

mono

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Re: Variator "Shifting"
« Reply #30 on: July 17, 2012, 02:04:08 PM »
My observation is that the sound of a higher revving engine makes it seem faster to a lot of inexperienced people - and also that the variator seems to work better to them because the revlimiter or natural rpm limit of the engine makes it sound very constant and smooth...

It takes some time to develop enough feel for these engines to be able to judge your setup just by driving.

Not so long ago I had to find some real benchmarks to measure and compare acceleration - like the speed I achieved at the end of a certain short road uphill and under certain wind conditions - just to be able to reliably compare the effect of two sets of weights that were only half a gram apart, without being influenced by sound or expectations...

baddi

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Re: Variator "Shifting"
« Reply #31 on: July 17, 2012, 02:08:51 PM »
Same here when you guys are running 7g+ rollers. I tried 7.5g rollers about a yr ago to see how they were and i lasted about 5mins before i hated everything about them, i just had no power, no revs, no torque, it died on hill and i couldnt get up to top speed unless i had an airstrip or something.

No way my revs were anywhere near 7200 on a flat normal road, usually i ended up down at 5000-6000 at most. On my 5.1g rollers, 1600 torque spring my tach normally reads between 7000-8400 once im up to speed, rises to 9000 down hills.

Anything over 5.5g kills my A50 on ANY torque spring stiffness, believe me, i tried lots of different combinations in the past and none worked as well for me as i have now. Maybe Scandinavia where you live is totally flat so your set up works there? Def doesnt wotk over hete tho, thats for sure.

Still say a tach is a must for tuning, takes away the guess work of what rpm the engine is running at.

And 9000 is where the rev limiter are after the CDI is cut, so at what speed do you hit the rev limiter? :D

Today i checked my rollers, as they feel worn down, and changed one, which was worn to the metal. So much for driving mixed 6,5 and 6g rollers, the heavier get worn down faster.
I changed the worn down roller with one which is only medium worn, as i have already ordered some dr.pulley from scooter-assassin, and i hit the rev limiter at 69 km/h gps after 100-200 meters driving on a flat road. :)
Before i changed the worn roller, i were hitting it at 61 km/h, so even though the rollers still need replacement, it is not as bad as before. ;)

I have observed the same as mono, and ealier i were timing the time it took for me to hit 30, 50 and 60 on the speedometer to get the right roller weight, but the speedometer on this scooter is broken, so since im using GPS on my phone to see speed, i cant also use the phone to time it. But this is all solved, when i get the money for a Stage 6 speedometer which can also time the time it takes to achieve a certain speed. :)
« Last Edit: July 17, 2012, 02:12:48 PM by baddi »
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streido

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Re: Variator "Shifting"
« Reply #32 on: July 17, 2012, 04:35:04 PM »
I hit the rev limit  48-50mph downhill, dont usually hit the 9000 on flats (traffic, junctions and lights get in the way). Flats i normally get around 46-48mph and at that its around 800-8850 rpm on my tach but this varies depending on if the road is perfectly flat or has slight ups and downs.

Like Mono said you need a test route to use for all comparisons. I use the same 4-5 mile route to do my test runs on always, ot has a steep hill up, flats, and a nice downhill to finish. The only way to see what changes your tuning/new part has is to ride the route you know and compare your know speeds/accelerations, otherwise its all guesswork. I know i can get up the steep hill at 30-31mph, flats 46-48, downhill 50-52mph, if o do a swap or tune then ride my route i can easily see if its worse, better or the same. I also know i can pull away from certain junctions and by a known point i should be hitting 30/40/45mph, i use things like lampposts, side roads or road signs as reference points for this.

Mixing rollers is only for tuning to find the weight you like, once you get your ideal weight then you should always swap out for a full set of the correct weight you need. Otherwise you get what you just found, that the heavy ones wear faster.
« Last Edit: July 17, 2012, 05:14:15 PM by streido »
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streido

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Re: Variator "Shifting"
« Reply #33 on: July 17, 2012, 04:37:12 PM »
My speeds above are based on my scoots speedo. I did a compare on my phone gps and found when i did exactly 50mph on my speedo the gps was saying 46mph.
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tuko

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Re: Variator "Shifting"
« Reply #34 on: July 17, 2012, 06:16:38 PM »
My speeds above are based on my scoots speedo. I did a compare on my phone gps and found when i did exactly 50mph on my speedo the gps was saying 46mph.

That difference sounds about the same as I'm getting, my Speedo is showing 6»7 kph higher than the actual speed.

baddi

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Re: Variator "Shifting"
« Reply #35 on: July 17, 2012, 10:57:19 PM »
My speeds above are based on my scoots speedo. I did a compare on my phone gps and found when i did exactly 50mph on my speedo the gps was saying 46mph.

GPS on phone are usually not good, and a couple of programs i tried downloading for my friend on his iphone had a terrible lag, which makes me unsure if it can be trusted. I use "Ulysse Speedometer" on my smartphone and it usually have 6-12 satelites connected and i have learned that it is quite precise. It usually shows the same as or a little less than the road signs do, but that depends on when the road sign was calibrated. :)

All speedometers are 10%-15% off, with the 15% beign when you get closer to the highest number. This is because of the design of it and that it is illegal almost anyware to have an unfuntional speedometer, and that it cant show lower than what you drive but it can show up to 20% higher than what you drive before it is considered unfunctional. At least thats the upper point here in Denmark. :D
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streido

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Re: Variator "Shifting"
« Reply #36 on: July 18, 2012, 08:19:46 AM »
Quote
  Ulysse Speedometer 

Yup, same one i used/use, seems the best out there so far. Wont ever own an iphoney, not interested in overpriced Apple crap  :D

This was town riding so mostly stop-start apart from a couple of open roads to hit 50mph.

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baddi

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Re: Variator "Shifting"
« Reply #37 on: July 18, 2012, 11:36:43 PM »
Yup, same one i used/use, seems the best out there so far. Wont ever own an iphoney, not interested in overpriced Apple crap  :D

This was town riding so mostly stop-start apart from a couple of open roads to hit 50mph.



I take it, that you are measuring in mph there aswell. ;D
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mono

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Re: Variator "Shifting"
« Reply #38 on: July 19, 2012, 06:17:09 AM »
And only 19% battery charge left..... Living on the edge yeah !  8)

streido

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Re: Variator "Shifting"
« Reply #39 on: July 19, 2012, 09:01:37 AM »
Quote
take it, that you are measuring in mph there aswell.  

Is there any other scale?  :D

All our road signs are in mph here, as are all car speedo's and most bike speedo's too, it what we use. We wont have none of that new fangled Kilometre sh**, thats the work of the devil.  :)


And only 19% battery charge left..... Living on the edge yeah !  8)

Oh yeah  8)
Was on my way home from work, think this was the remains of my battery power after charging and using up 2-3 batteries worth while "working" hard at my bench all day.
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Kenho21

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Re: Variator "Shifting"
« Reply #40 on: July 19, 2012, 07:33:38 PM »
iPhone just came out with an app that actually transports me, so I no longer even need a scooter or car... You're phone can't do that hahaha :P
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Peters

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Re: Variator "Shifting"
« Reply #41 on: July 19, 2012, 07:55:33 PM »
They stole that technology from the starship enterprise  ;D
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streido

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Re: Variator "Shifting"
« Reply #42 on: July 20, 2012, 12:27:36 AM »
iPhone just came out with an app that actually transports me, so I no longer even need a scooter or car... You're phone can't do that hahaha :P

Im just typing your number in now.........see you in a second  :)
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