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Re: Frequently Asked Questions (Yamaha RX Series)
33 KM of Test run completed with mix riding condition.
1. Slow speed ride condition
It was behaving well after switching to 15T front and 38T rear. It pulled in 4th gear as low as 25kmph speed but yes acceleration took some time to get the 60kmph speed.
2. High speed ride condition
This is the important part and to my surprise it has clocked the amazing 112 kmph speed (on Speedo indicated) with my genuine 107 kg of weight. I have installed Mecheline M45 2.75x18 front and 3.25x18 rear which is oversize. to clear my doubt, i decided another run and it has clocked 110+ on speedo. I have never clocked those such speed on my stock 4TL00 bore.
One incident happened at high speed. when bike was running at 110+ kmph speed i decided to decelerate to reduce the speed and at around 80 kmph and bike was suddenly stopped and some sound came from engine and stalled. Some fumes were coming from silencer and some burnt smell was coming from engine. I waited for 5 minutes and started the bike and it was started with one kick then after riding the bike at 40 to 50 kmph for 20 KM and nothing happened. Some knocking or somthing loosening type sound coming from engine and disappeared with increased speed.
Note :
I was not riding on public road for maintaining safety and not encourage for same.
Some Observation
- It still need some retuning may be with bigger carburetor
- This bore developed it most of power at higher RPM
- 3rd Gear was strongest here with very wide power band. I am able to hit 80+kmph in third. The feeling was tremendous.
- One thing is sure, Need to accelerate hard for gaining some serious speed.
- Even in froth gear, 80 to 90 kmph was adequate but after 90 kmph engine was again in its powerband and getting 110 was effortless. The acceleration from 90 to 110 kmph was awesome. And the sound is like jaguar fighter jet.
- There was grunt at 60kmph in 4th gear with normal riding condition and felt another gear to smoothen out.
- I think this bore (3KA20) has very low torque in initial powerband though it was pulling easily in any gear with no sudden acceleration if you not twist the throttle fully.
- Sound from this bore is very racy. I really liked it compare to 4TL00.
- The refinement level is not good in 3KA20 bore compare to 4TL00.
- 4TL00 has good amount power from low to mid range RPM.
So finally Legend is Back
Now i have two option
1. To get the VM26SS (Part No.3KA-E4101-00) and retune the bike again to my satisfaction.
2. I still have my 4TL00 bore and i could get the 1st oversize piston (0.25)
which one do you suggest ?
33 KM of Test run completed with mix riding condition.
1. Slow speed ride condition
It was behaving well after switching to 15T front and 38T rear. It pulled in 4th gear as low as 25kmph speed but yes acceleration took some time to get the 60kmph speed.
2. High speed ride condition
This is the important part and to my surprise it has clocked the amazing 112 kmph speed (on Speedo indicated) with my genuine 107 kg of weight. I have installed Mecheline M45 2.75x18 front and 3.25x18 rear which is oversize. to clear my doubt, i decided another run and it has clocked 110+ on speedo. I have never clocked those such speed on my stock 4TL00 bore.
One incident happened at high speed. when bike was running at 110+ kmph speed i decided to decelerate to reduce the speed and at around 80 kmph and bike was suddenly stopped and some sound came from engine and stalled. Some fumes were coming from silencer and some burnt smell was coming from engine. I waited for 5 minutes and started the bike and it was started with one kick then after riding the bike at 40 to 50 kmph for 20 KM and nothing happened. Some knocking or somthing loosening type sound coming from engine and disappeared with increased speed.
Note :
I was not riding on public road for maintaining safety and not encourage for same.
Some Observation
- It still need some retuning may be with bigger carburetor
- This bore developed it most of power at higher RPM
- 3rd Gear was strongest here with very wide power band. I am able to hit 80+kmph in third. The feeling was tremendous.
- One thing is sure, Need to accelerate hard for gaining some serious speed.
- Even in froth gear, 80 to 90 kmph was adequate but after 90 kmph engine was again in its powerband and getting 110 was effortless. The acceleration from 90 to 110 kmph was awesome. And the sound is like jaguar fighter jet.
- There was grunt at 60kmph in 4th gear with normal riding condition and felt another gear to smoothen out.
- I think this bore (3KA20) has very low torque in initial powerband though it was pulling easily in any gear with no sudden acceleration if you not twist the throttle fully.
- Sound from this bore is very racy. I really liked it compare to 4TL00.
- The refinement level is not good in 3KA20 bore compare to 4TL00.
- 4TL00 has good amount power from low to mid range RPM.
So finally Legend is Back
Now i have two option
1. To get the VM26SS (Part No.3KA-E4101-00) and retune the bike again to my satisfaction.
2. I still have my 4TL00 bore and i could get the 1st oversize piston (0.25)
which one do you suggest ?
do you need that sort of speeds ? )you need to get the RXK primary , CDI & 5 speed transmission etc... You can check with Ajinkya on FB as suggested by Bibhu..
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