Newbie - With Questions! Experts needed!

MikeTheGoalie · 01-25-2008, 11:52 PM

Hello all,

I got a few questions. I am new to the dirt bike scene. My nephew purchased a Roketa RDS-200 about a year ago. He ran the poop out of it. He was going through a dust patch and the bike died. Never started again.

I took it apart and I found the valves kinda stuck.. I cleaned the entire engine and put it back together. Now it sounds like it wants to start, but never does.

My question is.. is there a way to adjust the timing on these bikes?! I can't find anything on that..

Also - it's getting gas, carb was rebuilt. Spark is good, new plug as well gap'd .. Just wont turn over. Fuses are ok.. ANY IDEAS?

ALSO!

I got a steel on a DB36! Either that or a "hummer".. they look the same.. This is my bike that I ride around now. I am getting some noise from the motor. I checked the owners manual. It mentions something about if you hear noise from the engine - it is the "AIR VALVE".. and you need to adjust them.

I can get steps 1 and 2 done. It says to remove the caps on the left hand side of the case, and turn the crank till you see TDC.. I got that part ok.. but the next step says take the two caps off the head and adjust the gap... only problem is I don't see any "caps" on the head at all that I can remove...

can anyone help me with these questions!?

I am going to surf this site now. I've seen some cool things on here and great ideas. I plan on being a on here a ton in the coming months!

Thanks !!

I'll try posting pics here.. they are from Myspace so not sure if they will come up..

Here is a video I just made of it after seeing some of your videos I just made me one.. hahahahahah

http://video.google.com/videoplay?do...00050524&hl=en

rich_e · 01-27-2008, 01:13 AM

Nice looking bike. The video was cool. The "Air Valves" are the intake and exhaust valves. Judging by the directions they're giving you, set TDC, remove "caps". They're telling you to adjust the valves. Only the overhead cam engines have caps, since you don't have any, you've got the pushrod engine. So take of the valve cover and have it. One thing I'm not sure about is the valve gap. I think my manual says .05MM, however I've seen a lot of people say .005MM.

MikeTheGoalie · 01-27-2008, 01:15 PM

Thanks Rich_e!

That is what I though!

I put in thicker oil, and now the valves are nice and quiet!

Jim · 01-27-2008, 06:37 PM

Cool video

ChiGongJitsu · 01-27-2008, 07:56 PM

:twisted: (rocking out to KoRn) :twisted: Good editing on the video

MikeTheGoalie · 01-27-2008, 09:10 PM

Ah Thanks! I just threw it together in like no time.

I love that song! I think I should name my bike "Devils little sister"..

But then again.. I wouldn't want to be riding the Devils little sister...

hehehehe

Jim · 01-27-2008, 10:08 PM

I was going to say something but I've censored myself :twisted:

liverchip · 01-28-2008, 03:40 PM

Welcome! As for the the dead Roketa, if the motor's turning over, I'd check the compression.

MikeTheGoalie · 01-28-2008, 06:38 PM

I think its got compression.. I can hear it "puffing" out the back..

liverchip · 01-30-2008, 01:24 AM

What do youmean by "valves were kind of stuck"?

MikeTheGoalie · 01-30-2008, 09:03 AM

Hard to explain. But the assembly that sits on top of the cam has like 2 rocker arms. They look like they open like scissors.. and they were stuck in the wide open position. As I squeezed them together, they just came loose and the arms sat back down on the lobe of the cam..

So now when I try to start it, I can hear the compression.. which it wasn't doing before cause the valves were not opening and closing..

01-25-2008, 11:52 PM	#1
MikeTheGoalie Join Date: Jan 2008 Location: Maricopa, Arizona Posts: 10	Newbie - With Questions! Experts needed! Hello all, I got a few questions. I am new to the dirt bike scene. My nephew purchased a Roketa RDS-200 about a year ago. He ran the poop out of it. He was going through a dust patch and the bike died. Never started again. I took it apart and I found the valves kinda stuck.. I cleaned the entire engine and put it back together. Now it sounds like it wants to start, but never does. My question is.. is there a way to adjust the timing on these bikes?! I can't find anything on that.. Also - it's getting gas, carb was rebuilt. Spark is good, new plug as well gap'd .. Just wont turn over. Fuses are ok.. ANY IDEAS? ALSO! I got a steel on a DB36! Either that or a "hummer".. they look the same.. This is my bike that I ride around now. I am getting some noise from the motor. I checked the owners manual. It mentions something about if you hear noise from the engine - it is the "AIR VALVE".. and you need to adjust them. I can get steps 1 and 2 done. It says to remove the caps on the left hand side of the case, and turn the crank till you see TDC.. I got that part ok.. but the next step says take the two caps off the head and adjust the gap... only problem is I don't see any "caps" on the head at all that I can remove... can anyone help me with these questions!? I am going to surf this site now. I've seen some cool things on here and great ideas. I plan on being a on here a ton in the coming months! Thanks !! I'll try posting pics here.. they are from Myspace so not sure if they will come up.. Here is a video I just made of it after seeing some of your videos I just made me one.. hahahahahah http://video.google.com/videoplay?do...00050524&hl=en
	0

01-27-2008, 01:13 AM	#2
rich_e Join Date: Nov 2007 Location: Kansas, USA Posts: 228	Nice looking bike. The video was cool. The "Air Valves" are the intake and exhaust valves. Judging by the directions they're giving you, set TDC, remove "caps". They're telling you to adjust the valves. Only the overhead cam engines have caps, since you don't have any, you've got the pushrod engine. So take of the valve cover and have it. One thing I'm not sure about is the valve gap. I think my manual says .05MM, however I've seen a lot of people say .005MM. __________________ 2000 HD XL1200C 2006 Hi-Bird QH-250-GY 2004 150CC Dual Sport (Chongqing Xgjao) 1978 Honda CB750K 1977 Honda GL-1000 (Goldwing) Project/Parts bikes 1977 Honda CB-750K 1977 Honda CB-550F
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01-27-2008, 06:37 PM	#4
Jim Join Date: Mar 2007 Location: Abbotsford, BC, Canada Posts: 4,880	Cool video __________________ "Be excellent to each other" "We are all human. Let's start to prove it!"
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01-27-2008, 10:08 PM	#7
Jim Join Date: Mar 2007 Location: Abbotsford, BC, Canada Posts: 4,880	I was going to say something but I've censored myself :twisted: __________________ "Be excellent to each other" "We are all human. Let's start to prove it!"
	0

01-28-2008, 03:40 PM	#8
liverchip Join Date: Nov 2006 Location: Mystery Spot Posts: 1,223	Welcome! As for the the dead Roketa, if the motor's turning over, I'd check the compression. __________________ 2009 XR650L Big Red Pig Tusk bar risers 2007 X-Moto(Jetmoto) GY250 --mods--- 15/40 sprockets UNI Pod Filter 2007 Shineray TMS 200XYi--Betsy Betsy Mods:______________________ Acerbis DHH headlight FMF Powercore pipe Uni Pod Filter
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01-27-2008, 01:15 PM	#3
MikeTheGoalie Join Date: Jan 2008 Location: Maricopa, Arizona Posts: 10	Thanks Rich_e! That is what I though! I put in thicker oil, and now the valves are nice and quiet!
	0

01-27-2008, 07:56 PM	#5
ChiGongJitsu Join Date: Sep 2007 Location: Ohio Posts: 315	:twisted: (rocking out to KoRn) :twisted: Good editing on the video
	0

01-27-2008, 09:10 PM	#6
MikeTheGoalie Join Date: Jan 2008 Location: Maricopa, Arizona Posts: 10	Ah Thanks! I just threw it together in like no time. I love that song! I think I should name my bike "Devils little sister".. But then again.. I wouldn't want to be riding the Devils little sister... hehehehe
	0

01-28-2008, 06:38 PM	#9
MikeTheGoalie Join Date: Jan 2008 Location: Maricopa, Arizona Posts: 10	I think its got compression.. I can hear it "puffing" out the back..
	0

01-30-2008, 01:24 AM	#10
liverchip Join Date: Nov 2006 Location: Mystery Spot Posts: 1,223	What do youmean by "valves were kind of stuck"? __________________ 2009 XR650L Big Red Pig Tusk bar risers 2007 X-Moto(Jetmoto) GY250 --mods--- 15/40 sprockets UNI Pod Filter 2007 Shineray TMS 200XYi--Betsy Betsy Mods:______________________ Acerbis DHH headlight FMF Powercore pipe Uni Pod Filter
	0

01-30-2008, 09:03 AM	#11
MikeTheGoalie Join Date: Jan 2008 Location: Maricopa, Arizona Posts: 10	Hard to explain. But the assembly that sits on top of the cam has like 2 rocker arms. They look like they open like scissors.. and they were stuck in the wide open position. As I squeezed them together, they just came loose and the arms sat back down on the lobe of the cam.. So now when I try to start it, I can hear the compression.. which it wasn't doing before cause the valves were not opening and closing..
	0