Getting into racing Part 2: More questions...

[satchriossi]

You can go a long way with the MC21 in terms of making it faster - Steve mentioned the Tyga 300 kit - and if you can find them there are HRC 'TT F3' kit parts available specifically for the MC21. Its all money though. Lots and lots of money...

There's a few fellas running MC21s in the winter series at the moment: Patrick Doohan, Albert Saunders and Jason Daws. Jason's bike definitely runs on slicks and i think Patrick's does too. Jason will most likely race the tri-series again this year so try to find him and check his bike out. It was originally put together by Glenn Mason and is a good example of what modifications to do to your MC21 to make a reliable, quick race bike. I'm pretty sure Dukic did his suspension.

[jellywrestler]

I had thought of getting Robert or Kerry (I'm not biased either way btw, though I do find the competition between the two interesting) to do the forks.

Why don't you get one to do each fork??

[SWERVE]

Why don't you get one to do each fork??

Classic..Spyda...classic

[sharp2183]

Thanks for the advice guys. Will definately implement most of it! Not the 'have one do each fork' though sorry!

HOWEVER... had the bike out at the track today for its first run after various work being done etc. Got two sessions in (one at slow pace, one at fairly reasonable revs), and coming out of a corner the bike bogged down and wouldn't accelerate, then proceeded to die.

I can get it running but only on one cylinder (the rear one). The other pops and fires every now and then but pretty much just doesnt go. I suspect it may have partially seized but would like to hear any opinions as to what it could be... And what could have caused it?

Any ideas?

[Shaun]

Thanks for the advice guys. Will definately implement most of it! Not the 'have one do each fork' though sorry!

HOWEVER... had the bike out at the track today for its first run after various work being done etc. Got two sessions in (one at slow pace, one at fairly reasonable revs), and coming out of a corner the bike bogged down and wouldn't accelerate, then proceeded to die.

I can get it running but only on one cylinder (the rear one). The other pops and fires every now and then but pretty much just doesnt go. I suspect it may have partially seized but would like to hear any opinions as to what it could be... And what could have caused it?

Any ideas?

Spark plug CAPS are renound for failure buddy

[Latte]

Start simple, pull the plugs, swap them over (or use new ones if you have). Inspect them 1st for condition etc.

Then pull the exhausts and take a gander at the piston. Easier than carbs at this stage on the nsr (in my opinion),

[Mental Trousers]

... and Jason Daws. Jason's bike definitely runs on slicks and i think Patrick's does too. Jason will most likely race the tri-series again this year so try to find him and check his bike out. It was originally put together by Glenn Mason and is a good example of what modifications to do to your MC21 to make a reliable, quick race bike. I'm pretty sure Dukic did his suspension.

Has he ditched the RS with the RGV motor in it?? (I know the RS is based on the RGV but it isn't exactly the same and the RGV is much more reliable)

[sharp2183]

Spark plug CAPS are renound for failure buddy

Caps are new, as are the plugs. Swapped the plugs and both have spark. Will have to check the piston in daylight.

I'm starting to suspect I have some damage, which would be a real kick in the guts. Partial seizure perhaps?

[Shaun]

Caps are new, as are the plugs. Swapped the plugs and both have spark. Will have to check the piston in daylight.

I'm starting to suspect I have some damage, which would be a real kick in the guts. Partial seizure perhaps?

deffinately a possibility sad to say

[koba]

Caps are new, as are the plugs. Swapped the plugs and both have spark. Will have to check the piston in daylight.

I'm starting to suspect I have some damage, which would be a real kick in the guts. Partial seizure perhaps?

Have a really close look at both plugs. Remember what you see, file it away in your brain and keep doing it. Keep notes, lots of notes.
You will gradually build a knowledge of plug reading among other things.
If it has seized you will likely see signs of it on the plug, but to know what you are looking for it is best to have seen it before.
Best way to check for now is as said above, peer up the exhaust ports and down the plug holes.

You are embarking on a huge learning curve, if you are smart about things and a wee bit lucky it will be hugely rewarding.

[sharp2183]

Have a really close look at both plugs. Remember what you see, file it away in your brain and keep doing it. Keep notes, lots of notes.
You will gradually build a knowledge of plug reading among other things.
If it has seized you will likely see signs of it on the plug, but to know what you are looking for it is best to have seen it before.
Best way to check for now is as said above, peer up the exhaust ports and down the plug holes.

You are embarking on a huge learning curve, if you are smart about things and a wee bit lucky it will be hugely rewarding.

When I first pulled them out both plugs were fairly dry (the front cyl. more than the rear) but yes you're right, I don't know what to look for.

As for the learning experience part, it may sound dumb but that is exactly why I got an old two stoke. Everyone keeps giving me shit but I know so much more now than I did two months ago! Might just continue...

[koba]

When I first pulled them out both plugs were fairly dry (the front cyl. more than the rear) but yes you're right, I don't know what to look for.

As for the learning experience part, it may sound dumb but that is exactly why I got an old two stoke. Everyone keeps giving me shit but I know so much more now than I did two months ago! Might just continue...

Look for a buildup of powdery kind of stuff (I'ts hard to describe).

[sharp2183]

Look for a buildup of powdery kind of stuff (I'ts hard to describe).

Yeah I know what you mean, but no it was fairly clean. They were literally brand new though, run only 40 mins...

[racefactory]

When I first pulled them out both plugs were fairly dry (the front cyl. more than the rear) but yes you're right, I don't know what to look for.

As for the learning experience part, it may sound dumb but that is exactly why I got an old two stoke. Everyone keeps giving me shit but I know so much more now than I did two months ago! Might just continue...

Know what you mean, all those haters and shit stirrers, fuck 'em all. Anyone who is willing to put in the learning and effort to keep a 2 stroke performance machine ticking is to be respected!

[Shaun]

Look for a buildup of powdery kind of stuff (I'ts hard to describe).

with the fuel we have now, it is near on impossible to read plugs as per the old days. As you know reading a plug accurately involves the depth of the ring around the electrode its more than just the colour on them. To teach him how to read them with out more engine failures is near on impossible without showing and explaining first hand what is good and what is bad.

I would focus on finding some one in your area who is prepared to give you some pointers face to face ( THE POSTER not you Koba)