The Yamaha 'RX' Thread (with pics)

bornin70s · 4th May 2010, 20:33

My 2003 Rx135 after a neat little re-build. I myself am a noob with regards to 2 strokes but have owned this pocket rocket since forever.

Was in the basement for over a year due to neglect and my inability to take it out during weekdays, thanks to a 9 to 5 job which always extended till 9 at night.

The Yamaha 'RX' Thread (with pics)-dsc03509.jpg

The Yamaha 'RX' Thread (with pics)-dsc03511.jpg

And finally an idea from my cousin who himself owns a beautifully modded RD350

The Yamaha 'RX' Thread (with pics)-dsc03515.jpg

The bike runs well. But still has some "Clearance Issues" which my mechanic conveniently overlooked.

How are clearance issues solved in Rx135s?

SPIKE ARRESTOR · 4th May 2010, 20:37

Quote:

Originally Posted by aargee

Water in carbs or tank or exhaust assy?
If you're able to move the motorcycle after engaging gears & then, if the engine dies when the motorcycle moves, then it could be due to air block entering into the fuel tank.

Hi Aargee,

Don't think it is the exhaust, although i seriously doubt if it is the carb, do you think air block entering the fuel tank could be the problem?

This is what happens, i kick start my bike, it idles properly after few revvs, i engage gear and release clutch for movement and it dies off, otherwise i don't see anything abnormal here. What are your thoughts?

Spike

SriramEfunds · 4th May 2010, 21:01

Quote:

Originally Posted by aargee

Oh!!! When did you do this? The price is 1.3K from Bajaj A.S.S

I did sometime mid-April.

The shox was bought from Valasarawalkam Bajaj A.S.S. (forgot it's name err!) priced around 1090. I went to this Bajaj and asked for this SS shox, however, that point of time they said currently don't have stock, might be lying in the godown. I could not go the next day so ask them to keep it ready for me. After few days my friend followed up and told it has arrived. Since my friend knew them for a long and he stays in that area, was able get for me. I did not bother to ask if this was something old stock or did he manage to get some discount. The shox were brand new (looked unused).

I'm might not be able to tell anything more about since I knew it was bought from Bajaj A.S.S, so I believe it is genuine.

aargee · 4th May 2010, 21:03

Are you starting with or without using choke? Have you tried switching ON choke the moment you feel the engine is going to stop? What happens then? Well, by now the water from carbs should've dried up; so I suspect it may not be the case now.

Air block happens like this - you start (1 or 2 kicks), then runs for sometime & the engine feels like there's no fuel from main, so you tend to turn reserve, even then the engine goes off. Note that this symptom does not have a regular pattern, it can happen in 5 minutes, 15 minutes or not at all.

aargee · 4th May 2010, 21:48

Quote:

Originally Posted by SriramEfunds

I'm might not be able to tell anything more about since I knew it was bought from Bajaj A.S.S, so I believe it is genuine.

Not sure, if this post will get deleted due to OT. Double check if yours is from Discover DTS-i or CT100 as both of them plonk the same type of rears. There is hardly any difference between the two, but some experienced guys could make out. I was initially handed over CT100's & they said its all the same. Fortunately while I was debating, a youngster appeared & said there was a difference & the part numbers are different & the springs are little harder on old Discover & he helped me to get one. It took about a month for me to get a pair. The CT100's rear suspensions are absolutely fine too, its just that I tried picking up little harder & in the long run, one can hardly find any differences between the two.

Blue_V · 5th May 2010, 08:06

Has anyone built a 2 cylinder RX? It would be like 200cc with amazing power. Anyone?

aargee · 5th May 2010, 08:20

Quote:

Originally Posted by Blue_V

Has anyone built a 2 cylinder RX? It would be like 200cc with amazing power. Anyone?

Can be done, but how about registering it with RTO? What if they do not agree? The entire effort goes kaput.

SPIKE ARRESTOR · 5th May 2010, 08:26

Quote:

Originally Posted by aargee

Are you starting with or without using choke? Have you tried switching ON choke the moment you feel the engine is going to stop? What happens then? Well, by now the water from carbs should've dried up; so I suspect it may not be the case now.

In cold cranking, when i crank for the first time in the morning I have to use choke, otherwise it fires in 1-2 kicks. I tried using the choke when the engine is about to die, it doesn't die when i do this.

Spike

aargee · 5th May 2010, 09:08

Quote:

Originally Posted by SPIKE ARRESTOR

In cold cranking, when i crank for the first time in the morning I have to use choke, otherwise it fires in 1-2 kicks. I tried using the choke when the engine is about to die, it doesn't die when i do this.

Then check the fuel cock & clean the carbs & additionally check the tank for any blocks; I'm sure you'll be good to go; looks like the fuel is not supplied in regular way as expected, but a short cut supply through choke works.

SPIKE ARRESTOR · 5th May 2010, 09:18

Quote:

Originally Posted by aargee

Then check the fuel cock & clean the carbs & additionally check the tank for any blocks; I'm sure you'll be good to go; looks like the fuel is not supplied in regular way as expected, but a short cut supply through choke works.

Thanks, fuel cock seems to be clean. Carb cleaning had been in my to-do list for quite some time now, will get the fuel tank cleaned too!

Spike

aargee · 5th May 2010, 09:31

^^^ Good Luck & pls keep us posted when the issue is resolved. I hope you'll clean the air filter too, when you're cleaning the carbs & if you're using oil pump, I hope you'll check for the air bubbles in the tube & tank.

SPIKE ARRESTOR · 5th May 2010, 09:40

yeah sure, will update as soon as things get sorted, thanks once again for the suggestions.

Spike

georgev · 5th May 2010, 10:36

can you move the bike with the rev.s kept little high, loading the clutch ? like you launch for a race ?

if you can then it can be a carb problem. it can be a sticking float, blocked main jet, needle adjusted too lean etc..

SPIKE ARRESTOR · 5th May 2010, 10:44

no, i tried doing this too, but still the engine dies off, do you think something else may be the culprit?

georgev · 5th May 2010, 20:26

you mean the engines shuts off when you engage gear and try to launch the bike. that means you can rev it keeping it on the central stand ? keeping the bike on the central stand rev the bike and engage 2nd gear and then 3 rd gear.pull the clutch many times when you are doing this.it this is not working replace the gear oil. i think the clutch plates are stuck.

try this and let me know

4th May 2010, 20:33	#286
bornin70s BHPian Join Date: Feb 2010 Location: Bangalore Posts: 70 Thanked: 2 Times	My 2003 Rx135 after a neat little re-build. I myself am a noob with regards to 2 strokes but have owned this pocket rocket since forever. Was in the basement for over a year due to neglect and my inability to take it out during weekdays, thanks to a 9 to 5 job which always extended till 9 at night. And finally an idea from my cousin who himself owns a beautifully modded RD350 The bike runs well. But still has some "Clearance Issues" which my mechanic conveniently overlooked. How are clearance issues solved in Rx135s?
	() Thanks

4th May 2010, 21:03	#289
aargee Senior - BHPian Join Date: Jan 2010 Location: TSTN Posts: 6,237 Thanked: 9,647 Times	Are you starting with or without using choke? Have you tried switching ON choke the moment you feel the engine is going to stop? What happens then? Well, by now the water from carbs should've dried up; so I suspect it may not be the case now. Air block happens like this - you start (1 or 2 kicks), then runs for sometime & the engine feels like there's no fuel from main, so you tend to turn reserve, even then the engine goes off. Note that this symptom does not have a regular pattern, it can happen in 5 minutes, 15 minutes or not at all. Last edited by aargee : 4th May 2010 at 21:06.
	() Thanks

5th May 2010, 08:06	#291
Blue_V BHPian Join Date: Nov 2007 Location: Bangalore Posts: 173 Thanked: 67 Times	Has anyone built a 2 cylinder RX? It would be like 200cc with amazing power. Anyone?
	() Thanks

5th May 2010, 09:31	#296
aargee Senior - BHPian Join Date: Jan 2010 Location: TSTN Posts: 6,237 Thanked: 9,647 Times	^^^ Good Luck & pls keep us posted when the issue is resolved. I hope you'll clean the air filter too, when you're cleaning the carbs & if you're using oil pump, I hope you'll check for the air bubbles in the tube & tank. Last edited by aargee : 5th May 2010 at 09:47.
	() Thanks

5th May 2010, 09:40	#297
SPIKE ARRESTOR Senior - BHPian Join Date: Nov 2009 Location: Germany Posts: 2,854 Thanked: 1,532 Times	yeah sure, will update as soon as things get sorted, thanks once again for the suggestions. Spike
	() Thanks

5th May 2010, 10:36	#298
georgev BHPian Join Date: Jan 2010 Location: KL-05 Posts: 233 Thanked: 7 Times	can you move the bike with the rev.s kept little high, loading the clutch ? like you launch for a race ? if you can then it can be a carb problem. it can be a sticking float, blocked main jet, needle adjusted too lean etc.. Last edited by georgev : 5th May 2010 at 10:45.
	() Thanks

5th May 2010, 10:44	#299
SPIKE ARRESTOR Senior - BHPian Join Date: Nov 2009 Location: Germany Posts: 2,854 Thanked: 1,532 Times	no, i tried doing this too, but still the engine dies off, do you think something else may be the culprit?
	() Thanks

5th May 2010, 20:26	#300
georgev BHPian Join Date: Jan 2010 Location: KL-05 Posts: 233 Thanked: 7 Times	you mean the engines shuts off when you engage gear and try to launch the bike. that means you can rev it keeping it on the central stand ? keeping the bike on the central stand rev the bike and engage 2nd gear and then 3 rd gear.pull the clutch many times when you are doing this.it this is not working replace the gear oil. i think the clutch plates are stuck. try this and let me know
	() Thanks