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Search: Posts Made By: motolab
Forum: Thumpers 04-30-2015, 07:32 PM
Replies: 7,079
Views: 1,282,588
Posted By motolab
It's supposed to allow kick-starting an engine...

It's supposed to allow kick-starting an engine with a battery ignition while the battery is dead.

Regards,

Derek
Forum: Thumpers 04-30-2015, 10:22 AM
Replies: 7,079
Views: 1,282,588
Posted By motolab
I installed a second fan on a customer's Duke II....

I installed a second fan on a customer's Duke II. I had to move the capacitor elsewhere and because of the extra current draw, I installed a relay that now runs both fans.

Regards,

Derek
Forum: Thumpers 04-28-2015, 09:40 PM
Replies: 16,556
Views: 2,798,775
Posted By motolab
From what I can tell, 51121-26E10 is likely to...

From what I can tell, 51121-26E10 is likely to work.

Regards,

Derek
Forum: Thumpers 04-28-2015, 08:27 AM
Replies: 16,556
Views: 2,798,775
Posted By motolab
I made a bracket for the Ignitech ignition:...

I made a bracket for the Ignitech ignition: http://www.moto-lab.com/gallery/view?itemid=384, http://www.moto-lab.com/gallery/view?itemid=387 & http://www.moto-lab.com/gallery/view?itemid=385.
...
Forum: Thumpers 04-28-2015, 08:20 AM
Replies: 16,556
Views: 2,798,775
Posted By motolab
Do you have the dimensions of the bushing? ...

Do you have the dimensions of the bushing?

Regards,

Derek
Forum: Thumpers 04-27-2015, 09:04 PM
Replies: 57
Views: 1,021
Posted By motolab
They only useful thing they are likely to be able...

They only useful thing they are likely to be able to do is read the emissions at idle. You may as well use the opportunity to set the idle mixture (to the CO target I supplied). The rest of the...
Forum: Thumpers 04-27-2015, 08:50 PM
Replies: 57
Views: 1,021
Posted By motolab
You can set the idle CO to ~4% while the coolant...

You can set the idle CO to ~4% while the coolant temperature is at 180<!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:DoNotOptimizeForBrowser/> ...
Forum: Thumpers 04-27-2015, 07:33 PM
Replies: 57
Views: 1,021
Posted By motolab
Idle mixture adjustment procedure when gas...

Idle mixture adjustment procedure when gas analysis is not available:

Warm up the engine completely and set the idle speed to 1400 50 rpm. Coming from the lean side, adjust the fuel screw so that...
Forum: Thumpers 04-27-2015, 06:56 PM
Replies: 57
Views: 1,021
Posted By motolab
Is the engine fully warmed up when the stumble...

Is the engine fully warmed up when the stumble happens?

Regards,

Derek
Forum: Thumpers 04-27-2015, 06:34 PM
Replies: 57
Views: 1,021
Posted By motolab
BST40 carburetors do not have air screws. ...

BST40 carburetors do not have air screws.

Regards,

Derek
Forum: Thumpers 04-27-2015, 09:54 AM
Replies: 32,036
Views: 4,006,650
Posted By motolab
Everything that is read or heard is interpreted...

Everything that is read or heard is interpreted in some way.

Regards,

Derek
Forum: Thumpers 04-27-2015, 08:27 AM
Replies: 32,036
Views: 4,006,650
Posted By motolab
How should "From 100 or so years of motorcycle...

How should "From 100 or so years of motorcycle tuning, physics, and common sense." be interpreted?

Regards,

Derek
Forum: Thumpers 04-26-2015, 11:36 PM
Replies: 32,036
Views: 4,006,650
Posted By motolab
You were claiming that it's a universal truism...

You were claiming that it's a universal truism that opening the exhaust makes the mixture leaner.

Regards,

Derek
Forum: Thumpers 04-26-2015, 10:14 PM
Replies: 32,036
Views: 4,006,650
Posted By motolab
That's out of step with my experience dyno...

That's out of step with my experience dyno testing with 5-gas EGA. The example that comes to mind readily is a championship-winning EX250, which had a leaner mixture with an exhaust restrictor...
Forum: Thumpers 04-26-2015, 09:34 PM
Replies: 32,036
Views: 4,006,650
Posted By motolab
Whether it works as described here depends (among...

Whether it works as described here depends (among other things) on whether an airbox is present, it's design, and whether or not/to what extent it has been modified.

Regards,

Derek
Forum: Thumpers 04-26-2015, 06:29 PM
Replies: 57
Views: 1,021
Posted By motolab
The setting needs to be more accurate than what...

The setting needs to be more accurate than what "looks" right.

Regards,

Derek
Forum: Thumpers 04-26-2015, 06:12 PM
Replies: 57
Views: 1,021
Posted By motolab
Instructions for setting float height: ...

Instructions for setting float height:

Preset the tang on the float setting tool to the desired height (the standard setting is 14.7mm). Set the tool's width just wider than the width of the...
Forum: Thumpers 04-26-2015, 03:25 PM
Replies: 32,036
Views: 4,006,650
Posted By motolab
This would be correct reasoning on a fuel...

This would be correct reasoning on a fuel injected engine, but not on a carbureted one.Charge dilution does not lean the mixture.

Regards,

Derek
Forum: Thumpers 04-26-2015, 03:10 PM
Replies: 32,036
Views: 4,006,650
Posted By motolab
Argumentum ad antiquitatem.Even if physics...

Argumentum ad antiquitatem.Even if physics support the claim despite the empirical method indicating otherwise, the rationalist should still be able to support his a priori claim with an...
Forum: Thumpers 04-26-2015, 02:38 PM
Replies: 57
Views: 1,021
Posted By motolab
Do you mean an extended fuel screw? If so, see...

Do you mean an extended fuel screw? If so, see just past half way down at http://www.advrider.com/forums/showpost.php?p=11470034&postcount=1.

Regards,

Derek
Forum: Thumpers 04-26-2015, 01:33 PM
Replies: 57
Views: 1,021
Posted By motolab
The slide guide o-ring is included in the rebuild...

The slide guide o-ring is included in the rebuild kit that I sell.

It should be noted that the kit I sell is not 1:1 to KTMs. I include the float needle, needle seat o-ring, cold start enrichment...
Forum: Thumpers 04-26-2015, 12:17 PM
Replies: 57
Views: 1,021
Posted By motolab
There should be an o-ring on the float needle...

There should be an o-ring on the float needle seat as well as in the groove at the base of the slide guide (although the latter being missing would have nothing to do with a high fuel level).
...
Forum: Thumpers 04-26-2015, 10:20 AM
Replies: 32,036
Views: 4,006,650
Posted By motolab
Where does the idea come from that a reduction in...

Where does the idea come from that a reduction in exhaust back pressure leans the mixture?

Regards,

Derek
Forum: Thumpers 04-26-2015, 10:00 AM
Replies: 57
Views: 1,021
Posted By motolab
If the snorkel is in place (which it sounds...

If the snorkel is in place (which it sounds like), agreed.Correct.The exhaust does not require a larger main jet.Agreed.

The needle should be raised to the 4th clip position after the correct...
Forum: Thumpers 04-26-2015, 09:53 AM
Replies: 57
Views: 1,021
Posted By motolab
This is excellent advice. Regards, Derek

This is excellent advice.

Regards,

Derek
Forum: Thumpers 04-26-2015, 09:52 AM
Replies: 57
Views: 1,021
Posted By motolab
Besides the bike not being level when you check,...

Besides the bike not being level when you check, I can't think of a way to do it incorrectly.The float height needs to be set if the float needle was replaced, and should ideally be checked any time...
Forum: Thumpers 04-25-2015, 09:14 PM
Replies: 2,176
Views: 372,182
Posted By motolab
It hooks to a port on the right side of the...

It hooks to a port on the right side of the carburetor just above the cast-in "Mikuni" logo.

Regards,

Derek
Forum: Thumpers 04-25-2015, 08:25 PM
Replies: 811
Views: 126,990
Posted By motolab
They did have (by '03) if the bike is left stock...

They did have (by '03) if the bike is left stock or if an aftermarket muffler comparable to the Leo Vince with no quiet insert (but with spark arrestor) is installed together with snorkel removal and...
Forum: Thumpers 04-23-2015, 06:24 PM
Replies: 239
Views: 55,132
Posted By motolab
Chevron 94 may not be the best choice as there...

Chevron 94 may not be the best choice as there have been reports of vehicles that use knock sensing going into safe mode (i.e. it may not really have 94 R+M/2 octane). No ethanol also is a concern,...
Forum: Thumpers 04-23-2015, 09:41 AM
Replies: 2,176
Views: 372,182
Posted By motolab
Exhaust system air leaks can indeed cause or...

Exhaust system air leaks can indeed cause or exacerbate decel popping (try temporarily removing SAS reeds some time as an experiment).

Regards,

Derek
Forum: Thumpers 04-23-2015, 09:36 AM
Replies: 2,176
Views: 372,182
Posted By motolab
Do you have a specific question?It does not. ...

Do you have a specific question?It does not.

Regards,

Derek
Forum: Thumpers 04-21-2015, 10:15 PM
Replies: 116
Views: 4,614
Posted By motolab
On a high-flow model, a Leo Vince slip on with no...

On a high-flow model, a Leo Vince slip on with no insert but with spark arrestor in place is just barely enough exhaust flow to allow safety in terms of detonation with snorkel removal and...
Forum: Thumpers 04-21-2015, 02:00 PM
Replies: 9,397
Views: 2,115,753
Posted By motolab
The float height should be set to 14.7mm via a...

The float height should be set to 14.7mm via a float height setting tool.No.No.The stock jetting is not rich (unless parts are worn out). A better exhaust will definitely help get the heat out of the...
Forum: Thumpers 04-21-2015, 11:51 AM
Replies: 116
Views: 4,614
Posted By motolab
1) There is no direct relationship between O2...

1) There is no direct relationship between O2 content and AFR.
2) Even when the mixture cannot be improved, O2 content can and does vary from "ideal".
3) The O2 content can be "perfect" while...
Forum: Thumpers 04-20-2015, 10:23 PM
Replies: 116
Views: 4,614
Posted By motolab
Elevation will reduce cylinder filling and...

Elevation will reduce cylinder filling and therefore will definitely help, but I don't know how much elevation is required to make a cut airbox safe with a stock exhaust.What do the jetting changes...
Forum: Thumpers 04-20-2015, 10:18 PM
Replies: 116
Views: 4,614
Posted By motolab
Unfortunately repeating yourself is not an...

Unfortunately repeating yourself is not an argument nor an explanation.Nice Argumentum ad Populum/Argumentum Ad Numeram. Are you trying to imply that mine is not a "pro shop", or that if a beemer...
Forum: Thumpers 04-20-2015, 09:39 PM
Replies: 116
Views: 4,614
Posted By motolab
Why does it seem excessive? Personally, I am...

Why does it seem excessive?

Personally, I am not a fan of stiction and worn parts. Plunging the front end does not provide maximum overlap, so will not guarantee alignment to the extent that...
Forum: Thumpers 04-20-2015, 09:06 PM
Replies: 116
Views: 4,614
Posted By motolab
I tighten the axle pinch bolts with the fork caps...

I tighten the axle pinch bolts with the fork caps removed and the front end collapsed any time a front axle has been disturbed (wheel has been removed and reinstalled), and stroke through by hand...
Forum: Thumpers 04-20-2015, 08:52 PM
Replies: 9,397
Views: 2,115,753
Posted By motolab
The pre-high flow head models are significantly...

The pre-high flow head models are significantly prone to detonation even in stock form. Unless significant detonation countermeasures above and beyond the installation of the full system are ...
Forum: Thumpers 04-20-2015, 07:09 PM
Replies: 2,176
Views: 372,182
Posted By motolab
That points to the pilot jet being too large, the...

That points to the pilot jet being too large, the pilot air jet being clogged or too small, the fuel level being too high, or the emulsion tube being worn out.Yes.No.

Regards,

Derek
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