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Search took 0.09 seconds. Search: Posts Made By: motolab
Forum: Thumpers Today, 10:36 AM
Replies: 15,980
Views: 1,930,568
Posted By motolab
You'd normally put the close coils on the...

You'd normally put the close coils on the unsprung end (the close coils otherwise add sprung weight).

Regards,

Derek
Forum: Thumpers Today, 10:27 AM
Replies: 77,114
Views: 13,995,832
Posted By motolab
Yes. You did say it in a previous post. I saw it...

Yes. You did say it in a previous post. I saw it and promptly forgot.That's obviously for you to decide, but I would have recommended continuing/widening the search. Did you make inquiries with...
Forum: Thumpers Yesterday, 09:25 PM
Replies: 1,315
Views: 185,355
Posted By motolab
I didn't say anything whatsoever about who...

I didn't say anything whatsoever about who performed the airbox modifications.With the stock intake configuration it may be OK. With the snorkel removed and airbox opened up, I don't think so. With...
Forum: Thumpers Yesterday, 09:15 PM
Replies: 77,114
Views: 13,995,832
Posted By motolab
Another DR650 engine that pings.Thanks for...

Another DR650 engine that pings.Thanks for clarifying. (R+M/2) is the standard in the US, and the numbers are not comparable to RON.

Regards,

Derek
Forum: Thumpers Yesterday, 04:11 PM
Replies: 77,114
Views: 13,995,832
Posted By motolab
Thanks for clarifying. Regards, Derek

Thanks for clarifying.

Regards,

Derek
Forum: Thumpers Yesterday, 01:05 PM
Replies: 77,114
Views: 13,995,832
Posted By motolab
Part throttle should be tuned with the...

Part throttle should be tuned with the responsible circuits, not with the fuel screw.

Regards,

Derek
Forum: Thumpers Yesterday, 01:02 PM
Replies: 77,114
Views: 13,995,832
Posted By motolab
While that's technically correct, the difference...

While that's technically correct, the difference is greater the more the throttle is closed and therefore the higher the vacuum that is trying to suck fuel past the exposed area adjacent to the tip...
Forum: Thumpers Yesterday, 12:56 PM
Replies: 77,114
Views: 13,995,832
Posted By motolab
Not necessarily. Regards, Derek

Not necessarily.

Regards,

Derek
Forum: Thumpers Yesterday, 12:51 PM
Replies: 77,114
Views: 13,995,832
Posted By motolab
And we have another one. To clarify, this is...

And we have another one.

To clarify, this is 95 RON rather than 95 (R+M)/2, right?

Regards,

Derek
Forum: Thumpers Yesterday, 12:46 PM
Replies: 77,114
Views: 13,995,832
Posted By motolab
Aha. So that brings up the question of why Suzuki...

Aha. So that brings up the question of why Suzuki would go to a nickel-plated emulsion tube.

Regards,

Derek
Forum: Thumpers Yesterday, 12:41 PM
Replies: 77,114
Views: 13,995,832
Posted By motolab
They're not. Regards, Derek

They're not.

Regards,

Derek
Forum: Thumpers Yesterday, 12:40 PM
Replies: 77,114
Views: 13,995,832
Posted By motolab
Unfortunately no CO traces. Regards, ...

Unfortunately no CO traces.

Regards,

Derek
Forum: Thumpers Yesterday, 12:36 PM
Replies: 77,114
Views: 13,995,832
Posted By motolab
On some bikes that's not the case at all. ...

On some bikes that's not the case at all.

Regards,

Derek
Forum: Thumpers Yesterday, 12:17 PM
Replies: 1,315
Views: 185,355
Posted By motolab
Since the pre high-flow head models are severely...

Since the pre high-flow head models are severely prone to detonation in stock form, I would not take any measures (including removing the snorkel) whatsoever to increase cylinder filling (and...
Forum: Thumpers 05-19-2013, 02:40 PM
Replies: 77,114
Views: 13,995,832
Posted By motolab
OK, so just to make sure I understand, your NZ/AU...

OK, so just to make sure I understand, your NZ/AU DR650 came with a bare brass emulsion tube, but the NZ/AU spec replacement is nickel plated?

Regards,

Derek
Forum: Thumpers 05-19-2013, 10:01 AM
Replies: 1,315
Views: 185,355
Posted By motolab
I didn't post any pictures at the beginning of...

I didn't post any pictures at the beginning of this thread.

The spacer is supposed to be round. The step in the floor of the slide is there so that the needle can pivot out of the way to an...
Forum: Thumpers 05-18-2013, 08:32 PM
Replies: 77,114
Views: 13,995,832
Posted By motolab
As far as I can tell, all markets except the US...

As far as I can tell, all markets except the US don't have nickel plated emulsion tubes. I think it's interesting to consider why that might be.

Regards,

Derek
Forum: Thumpers 05-18-2013, 06:18 PM
Replies: 1,315
Views: 185,355
Posted By motolab
OK, but what's "half" about it? Regards, ...

OK, but what's "half" about it?

Regards,

Derek
Forum: Thumpers 05-18-2013, 04:17 PM
Replies: 1,315
Views: 185,355
Posted By motolab
What half washer is that? Regards, Derek

What half washer is that?

Regards,

Derek
Forum: Thumpers 05-18-2013, 11:55 AM
Replies: 15,980
Views: 1,930,568
Posted By motolab
In most cases, an incorrect float height...

In most cases, an incorrect float height adjustment alone is not sufficient to cause overflowing.Float height doesn't really make much difference on most slide carbs I've seen. This is not the case...
Forum: Thumpers 05-17-2013, 11:04 PM
Replies: 77,114
Views: 13,995,832
Posted By motolab
Fine by me.I'm convinced that more fun can be had...

Fine by me.I'm convinced that more fun can be had without having to wear out the parts quicker.The problem is that "working very well" is in this case highly subjective. I'm interested in facts.Does...
Forum: Thumpers 05-17-2013, 05:38 PM
Replies: 77,114
Views: 13,995,832
Posted By motolab
Being able to see through the jet isn't a very...

Being able to see through the jet isn't a very good indicator of whether or not the jet is clean.

Regards,

Derek
Forum: Thumpers 05-17-2013, 05:37 PM
Replies: 77,114
Views: 13,995,832
Posted By motolab
While replacing the pilot jet for good measure...

While replacing the pilot jet for good measure won't harm anything, 8gv said that he has no problems below 1/4 opening and that all of his problems are confined to 1/4 opening and above (which the...
Forum: Thumpers 05-17-2013, 04:33 PM
Replies: 77,114
Views: 13,995,832
Posted By motolab
Are you sure the main jet is clean? What size is...

Are you sure the main jet is clean? What size is it? What air filter is installed? I know you said that the airbox is unmolested, but is the snorkel in place? What is the float height?

Regards,
...
Forum: Thumpers 05-17-2013, 01:17 PM
Replies: 77,114
Views: 13,995,832
Posted By motolab
How does it behave if the throttle is pinned...

How does it behave if the throttle is pinned right from low rpm?

Regards,

Derek
Forum: Thumpers 05-17-2013, 11:49 AM
Replies: 15,980
Views: 1,930,568
Posted By motolab
<!--[if gte mso 9]><xml> <w:WordDocument> ...

<!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:DoNotOptimizeForBrowser/> </w:WordDocument> </xml><![endif]-->±2mm is about the limit, however ±2mm...
Forum: Thumpers 05-17-2013, 11:45 AM
Replies: 15,980
Views: 1,930,568
Posted By motolab
The float height should be adjusted whenever the...

The float height should be adjusted whenever the float needle is replaced. Additionally, float height is a tuning parameter on CV carbs, having a very similar effect to changing emulsion tube size....
Forum: Thumpers 05-16-2013, 02:48 PM
Replies: 77,114
Views: 13,995,832
Posted By motolab
Yes.0.020" (0.51mm).On the KTM, it would be...

Yes.0.020" (0.51mm).On the KTM, it would be 0.010" (0.25mm). The '96 & up DR650 might tolerate a little more because the emulsion tube is nickel plated. That advantage would again mostly be negated...
Forum: Thumpers 05-16-2013, 12:15 PM
Replies: 77,114
Views: 13,995,832
Posted By motolab
Are there any charts to look at with the modified...

Are there any charts to look at with the modified airbox in place?

Regards,

Derek
Forum: Thumpers 05-16-2013, 10:06 AM
Replies: 77,114
Views: 13,995,832
Posted By motolab
I unwaveringly maintain that it can be made to...

I unwaveringly maintain that it can be made to work better than the DJ needle.

Regards,

Derek
Forum: Thumpers 05-16-2013, 10:05 AM
Replies: 77,114
Views: 13,995,832
Posted By motolab
I do have proof that the DJ needle does not work....

I do have proof that the DJ needle does not work. Where is proof to the contrary?

My questions were right to the point, because either the needle shape trends are not the needle shape trends, the...
Forum: Thumpers 05-16-2013, 09:35 AM
Replies: 77,114
Views: 13,995,832
Posted By motolab
How many miles prior had the hole been drilled...

How many miles prior had the hole been drilled and what size was it? Are you saying the slide showed wear, the slide guide showed wear, or both? What is the depth of the depressions concentric to the...
Forum: Thumpers 05-16-2013, 09:11 AM
Replies: 77,114
Views: 13,995,832
Posted By motolab
Unscrewing the fuel screw makes the mixture...

Unscrewing the fuel screw makes the mixture richer. There is normally not much overlap between the fuel screw's affect on closed throttle and other openings. That opening the fuel screw made the...
Forum: Thumpers 05-16-2013, 08:48 AM
Replies: 77,114
Views: 13,995,832
Posted By motolab
Please provide: 1) The depth of the...

Please provide:

1) The depth of the depressions concentric to the bore in the bottom corners of the slide guide.
2) What the lift hole diameter (or better yet, area) is.
3) What the...
Forum: Thumpers 05-16-2013, 08:45 AM
Replies: 77,114
Views: 13,995,832
Posted By motolab
Please provide the depth of the depressions...

Please provide the depth of the depressions concentric to the bore in the bottom corners of the slide guide.

Regards,

Derek
Forum: Thumpers 05-16-2013, 08:42 AM
Replies: 77,114
Views: 13,995,832
Posted By motolab
I find that hard to believe, since slide guides...

I find that hard to believe, since slide guides wear even when the slide has not been drilled and the under-diaphragm vent filtering is perfect.

Please provide:

1) The depth of the depressions...
Forum: Thumpers 05-16-2013, 08:38 AM
Replies: 77,114
Views: 13,995,832
Posted By motolab
Thanks so much for your comments. One slight...

Thanks so much for your comments. One slight correction though - it's CO (rather than CO2) that's the best indicator of mixture strength, and would therefore hopefully be shown on a dyno chart.
...
Forum: Thumpers 05-16-2013, 08:34 AM
Replies: 77,114
Views: 13,995,832
Posted By motolab
Please provide: 1) The depth of the...

Please provide:

1) The depth of the depressions concentric to the bore in the bottom corners of the slide guide.
2) The lift hole diameter (or better yet, area).
3) How many total miles there...
Forum: Thumpers 05-16-2013, 08:27 AM
Replies: 77,114
Views: 13,995,832
Posted By motolab
I have some simple questions for you: 1) Do...

I have some simple questions for you:

1) Do you deny what the needle shape trends for CV carbs are?
2) If not, do you believe the DR650 to somehow be an exception (i.e. that a change in shape...
Forum: Thumpers 05-15-2013, 11:43 PM
Replies: 77,114
Views: 13,995,832
Posted By motolab
Better than that would be people providing: ...

Better than that would be people providing:

1) The depth of the depressions concentric to the bore in the bottom corners of the slide guide.
2) Whether or not the slide was drilled.
3) If it was...
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