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# Thread: Max speed of each gear?

1. ## Max speed of each gear?

I own a unique ud-70 and the instruction manual tells me not to ride the bike at a speed higher than 50% for each gear. Today I suddenly realize that all that time I was reading each gear's max speed wrong .

How can we check the top speed for each gear, there seems to be small lines which are around 8 in total and then there are the four colors, blue-green-yellow-red. Do I look at the colors i.e. blue for the speed range of 1st gear, green for the 2nd and so on or its something else in my meter.

2. yes the colors indicate the speed range of gears,,
yar just look at the throttlr ,,after a bit more then a half rotation shift gear,, thats it

3. is revving high bad for an engine ?

4. from what i have heard is that if u use proper engine oil and chne it frequently at time reving high is good for engine of motorcycle, as they r made to rev at higher rpms i.e 11000 whareas a car engine may rev upto 7000 peak,, so reving is good..as these engines tr made to operate effectively at higher rpms,

5. Originally Posted by asjdsm
from what i have heard is that if u use proper engine oil and chne it frequently at time reving high is good for engine of motorcycle, as they r made to rev at higher rpms i.e 11000 whareas a car engine may rev upto 7000 peak,, so reving is good..as these engines tr made to operate effectively at higher rpms,
and revving car engine most of the time is bad ? even if we change oil at time.

6. cant say anything about cars,,

7. To check if reving high is bad or not you may do an experiment:

Buy 2 brand new 70 bikes, fill their fuel tanks to full, start both of them, keep one on its idle speed and adjust the other on full throttle, keep them start until they run out of fuel, you'll get the results

8. Originally Posted by c123pk
To check if reving high is bad or not you may do an experiment:

Buy 2 brand new 70 bikes, fill their fuel tanks to full, start both of them, keep one on its idle speed and adjust the other on full throttle, keep them start until they run out of fuel, you'll get the results
equipment for experiment is expensive , but what will be the results , thanks

9. @poster: i own a ud-70 recently purchased.used 800 kms in one month
For each gear speed, meter provides the speed with gear number written below each speed and also u can feel the throttle/rpm to feel speed during running process, as threads on pakwheels and user manual of ud-70 states that in running process each gear speed should be 50% i.e.,
1st gear : 10km/h
2nd gear
: 20 km/h
3rd gear: 30 km/h
4th gear: 40 km/h
and above but not more than 60km/h.
P.S: Continue the Running process till 1000kms for optimum performance and after that bang the engine.

10. Originally Posted by cursedd
@poster: i own a ud-70 recently purchased.used 800 kms in one month
For each gear speed, meter provides the speed with gear number written below each speed and also u can feel the throttle/rpm to feel speed during running process, as threads on pakwheels and user manual of ud-70 states that in running process each gear speed should be 50% i.e.,
1st gear : 10km/h
2nd gear
: 20 km/h
3rd gear: 30 km/h
4th gear: 40 km/h
and above but not more than 60km/h.
P.S: Continue the Running process till 1000kms for optimum performance and after that bang the engine.
and after the 1000km your bike engine is not going to generate the power as you needed ... you cant even touch the 90 k/h speed

11. Originally Posted by h3llzang3l
and after the 1000km your bike engine is not going to generate the power as you needed ... you cant even touch the 90 k/h speed

and you thought break-in period is limited to 1000 or 2000 or 5000 kms ?

12. lets cee whats the output. will share my experience!

13. Originally Posted by cursedd
@poster: i own a ud-70 recently purchased.used 800 kms in one month
For each gear speed, meter provides the speed with gear number written below each speed and also u can feel the throttle/rpm to feel speed during running process, as threads on pakwheels and user manual of ud-70 states that in running process each gear speed should be 50% i.e.,
1st gear : 10km/h
2nd gear: 20 km/h
3rd gear: 30 km/h
4th gear: 40 km/h
and above but not more than 60km/h.
P.S: Continue the Running process till 1000kms for optimum performance and after that bang the engine.
Really!?!?!?!?!

Because someone else posted that I should be looking at the colors for the 50% speed, so I was running at 30kmph at 2nd gear because the 2nd gear top speed seeing the colors is 40kmph.

Need some input, should I be looking at the colors or this and what should I do know.. I've done around 102km like that, will it hurt the engine?

14. as u said that top speed for 2nd gear is 40kmph so its 50% will be 20kmph so u must go accordingly with all the gears... engine shouldn't be hurt that much but yes after the process of running is completed than only u will feel the output.
As I am also in the running process and it is my first bike ever so my opinions won't matter much than those who are into bikes i.e.,experts.

15. The colors on my meter are confusing since I am not really an expert, they show 20kmph to 40kmph in green color, so I assumed that thats the speed range of 2nd gear and their 50% would be (20+40)/2=30kmph :p ... Now I remember bikes with meter showing their 2nd gear through a grey curve starting from 0kmph and ending at 40kmph ...

16. bhai sahab kion apna aap ko confuse kar raha ho,,
in your 70 there is no RPM meter,, there is just speedometer ,,to tell u the speed and odometer to give u covered mileage,,
so u cannot safely say from speedometer what rpm is it now,,
aso u have to look att the throttle(race) ,,
if u rotate it half of its max rotation u achieved half of its RPM in that particular gear ,,

let me say it in simple terms,, if u rotate the throttle(race) half and u r in first gear u achieved half rpm,,and so on using the how much u rotate the throtte u can tell how much pm u r,,,again its not a very precise rpm measurement but fairly coorrect for ur case,

17. Maximum gear range of a typical 70cc is as follows.

1st: 20km/h
2nd: 40km/h
3rd: 60km/h
4th: 80km/h

During the run-in period i-e the first 1000 kms, donot exceed the 50% gear range of every gear.

18. Im running the bike hard during the break in from time to time......I think that will help to achieve better gear ratios

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