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Author Topic: My Suzi T500 Project *New Video*  (Read 188696 times)

Offline johnu

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Re: My Suzi T500 Project *New Video*
« Reply #1240 on: Mar 11, 2017, 17:48:55 »
I was referring to number 28 in that diagram. On the stock RD carbs they are behind a brass ball. Doesn't look like yours have that brass ball.

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Mine has the brass ball.  I think I will remove the airscrew then blast it down in there with carb cleaner.

Original thought was to change the pilots from 45's to 40's but i'm wondering if i should go to 35's as the 40's still might not make much difference?

Offline jpmobius

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Re: My Suzi T500 Project *New Video*
« Reply #1241 on: Mar 11, 2017, 19:54:25 »
Here is a stock RD carb.  At 8:00 o-clock is the inlet for the pilot system. That brass you see in there is the pilot needle.  At 7:00 o-clock is the brass ball that closes off the drilling that connects to the pilot air supply.  At 6:00 o-clock you can see the main air jet down inside the main air inlet.  Typically on an off the shelf VM, the interchangeable air jet is in there but has a slot so you can screw it in and out.
« Last Edit: Mar 11, 2017, 20:03:31 by jpmobius »
Mobius


On a long enough timeline, the survival rate for everyone drops to zero.

1973 RD350 Yamaha build  http://www.dotheton.com/forum/index.php?topic=66498.0

Offline Ply318ci

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Re: My Suzi T500 Project *New Video*
« Reply #1242 on: Mar 11, 2017, 21:27:54 »
Emulsion tube that is what it was called. Mine had so much crap in it the little holes were plugged. Removed it, cleaned it, and the bike ran better and responded to the air screw better.


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Offline Ryan Stecken

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Re: My Suzi T500 Project *New Video*
« Reply #1243 on: Mar 12, 2017, 11:04:09 »
Watching this...

Offline johnu

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Re: My Suzi T500 Project *New Video*
« Reply #1244 on: Mar 21, 2017, 19:03:40 »
Ok guys finally had time to switch out the pilots from 45's to 35's.  Fired it up again and it seems worse although I was able to get it to tick over.  Air screws didn't seem to respond at all still.  Just nothing down low.  I did ride it around the block this time though and once you get it to clean up it flys ;D  but as soon as you drop the revs back down it has nothing down low >:(  I think I'll try teazers advice and go the other way and order some 60 pilots.  I have to d.o something!  On another note the twin disc set up on the front is bloody awesome, some serious stopping power there.

Offline johnu

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Re: My Suzi T500 Project *New Video*
« Reply #1245 on: Apr 06, 2017, 19:12:56 »
#60 pilots arrived today, hopefully install and test tomorrow :)

Offline clem

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Re: My Suzi T500 Project *New Video*
« Reply #1246 on: Apr 07, 2017, 00:00:21 »
Didn't thevstock T500 come with a 30 pilot jet? Seems crazy to have to go twice as large on the pilot but I may be wrong. Just thinking out loud.

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"After every war there are soldiers who refuse to surrender. To this day there are still thousands who cling to their 30+ year old motorcycles, thinking that the war is still on, refusing to concede that the four-strokes have won"

1972 DS7 http://www.dotheton.com/forum/index.php?topic=45886.msg505995#msg505995
1983 CB550sc bobber http://www.dotheton.com/forum/index.php?topic=30599.30

Offline teazer

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Re: My Suzi T500 Project *New Video*
« Reply #1247 on: Apr 07, 2017, 01:27:18 »
Probably, but this bike is ported, has chambers and big carbs. Big carbs and a pipe that doesn't resonate at low revs , tends to result in slow air flow and hence the need for big jets to respond to the weaker signal.  John already tried going smaller on slow jets and it seemed to make things worse, so I suggested he go big and see if that makes a difference.

Offline 50gary

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Re: My Suzi T500 Project *New Video*
« Reply #1248 on: Apr 07, 2017, 08:57:35 »
Clem, that's correct, my T-500 is stock with 30 pilots.  For an apple and orange comparison, my YZ490 has a 40 pilot in a VM38 and runs well.
 Cheers, 50gary
Short track speedskating, cycling, guitars, motorcycles, juggling dynamite. I was born to laugh at Tornadoes.

Offline johnu

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Re: My Suzi T500 Project *New Video*
« Reply #1249 on: Apr 07, 2017, 11:02:08 »
As Richard says I already went smaller and it seemed worse.  I hope to see a difference one way or the other with the 60's :)