98 replies to this topic

[muddy]

On trying this mod in my usual slapdash way, I've managed to lose one to the grommet nuts that the screen bolts into. Any ideas where I can a few for spares?

Edited by muddy, 17 April 2007 - 08:24 pm.

[Pict]

On trying this mod in my usual slapdash way, I've managed to lose one to the grommet nuts that the screen bolts into. Any ideas where I can a few for spares?

If you mean the black rubber cylinders with the brass insert, and you can find non-Yamaha ones that fit, you could be on to a winner - Halfords' ones for example are too small and Yammy ones are about £4 each! Or find a friendly dealer - mine thought it was a joke and discounted.

Edited by Pict, 17 April 2007 - 09:04 pm.

[muddy]

If you mean the black rubber cylinders with the brass insert, and you can find non-Yamaha ones that fit, you could be on to a winner - Halfords' ones for example are too small and Yammy ones are about £4 each! Or find a friendly dealer - mine thought it was a joke and discounted.

£4 each If i knew the correct term for these grommet thingies I'd to a search. The best i could come up with is grommet nut. Any suggestions??

[TDMTAM]

£4 each If i knew the correct term for these grommet thingies I'd to a search. The best i could come up with is grommet nut. Any suggestions??

Fyfe & Mcgrures in Glasgow had them as M5 neroprene well nuts at £0.51 each
TAM

[brihol]

Thanks for that Brian..
What screen to you have ?
I thought 3mm was good but I will try this ...8mm.
I pass near engineering fastner shop on th Dock road in Liverpool.
I'll pop in and see what he has on the shelf.

Cheers, Ivan

I have an MRA touring screen

Brian

[TDMTAM]

http://www.rivetwise...nge/wellnut.htm
http://search.ebay.c...QfsooZ1QQfsopZ1
TAM

Edited by TDMTAM, 17 April 2007 - 09:56 pm.

[muddy]

Fyfe & Mcgrures in Glasgow had them as M5 neroprene well nuts at £0.51 each
TAM

Ha hah, WELL NUT That's opened the door for me. Loads of 'em out there. Thanks mate.

[TDMTAM]

Ha hah, WELL NUT That's opened the door for me. Loads of 'em out there. Thanks mate.

Your welcome.
I told you i was a wealth of usless information
TAM

[AJ_Blizzard]

I tried another option today. I cut the shortened Yamaha touring screen a few cm. more; this time a curved line as the photo shows:



Took the bike out for a road test, without earplugs this time. And guess what? Significant noise reduction and wind pressure around the helmet! Increased wind pressure on my chest, though... And the bike felt more unstable, especially when cross-winds hit me and there's still some turbulence/buffeting when driving in traffic (driving behind cars, when overtaking traffic etc.).

But the wind noise reduction tempted me to keep the screen on the bike. But I did not, because I still think that MRA racing screen is the best option for me. It gives best protection against the wind and it hits me clean and steady most of the time.
It's also a matter of looks. I think that TDM looks better with MRA double bubble fitted:

I may experiment a little more, like making the curve deeper. But right now I'm going to give the screen "science" a little break for now and enjoy riding instead

[Croc]

I thought of cutting out a scoop just above the light in an arc. Any comments? I have a touring screen and a standard. I use the standard as I find this has less turbulence. I was planning to cut out the taller screen.

Croc

[E-njoy]

I thought of cutting out a scoop just above the light in an arc. Any comments? I have a touring screen and a standard. I use the standard as I find this has less turbulence. I was planning to cut out the taller screen.

A scoop like on my Sprint I guess?



Might be a good idea, best results on the lower screen though I think. I tried some huge holes in my tall and terrible Diversion screen, the screen was still too high (or low, depending), still terrible noisy with the turbulent boundary layer straight on the helmet. The short standard screen was much better.

[Tempest]

You think our experiments are ever going to work?

Unless the screen is high enough, or wrapped round far enough to the turbulance happened PAST your body?

I guess, with any screen on we're going t o be pushing air out of the way, and there will always be the pressure difference behind the screen?

Did anyone experiment with the cutting holes/slots in the screen that was talked about a few months back?

[Geordie Guy]

On trying this mod in my usual slapdash way, I've managed to lose one to the grommet nuts that the screen bolts into.

I did exactly the same, when trying out Brian's 8mm modification.

Hunted every where, I could'nt believe it because I rememberd reading your post.

In the end I took the side panels off and it was in there. So much for spending an hour on my hands and knees looking on the floor.

Did the Brian mod, very fiddely, but it looks brilliant. Goin into work on it in a minute , so I will be able to report back.

Cheers, Ivan

[AJ_Blizzard]

Why not replace the screen (and fairing) with something smaller that gives clean (and noise free) air around your helmet, and still relieves the pressure from the body?


/Nils

Well, I kinda like the appearance of Laughing In A Windstorm's bike, shown in another thread here. And I can see that you're getting there with yours.
But I like to keep the fairings because they are vital parts of the TDM identity IMHO.
To strip it, replace the headlight and so on to transform it to a streetfighter/caferacer is not something that I would do...
To me this bike has enough streetfighter characteristics as it is. The only thing I'm gonna change is already done - new slipons and DB screen (until I find something that's better...).
And I can live with some wind pressure and turbulence to keep the bike as close to stock condition as long as possible. Modest modifications are OK, but rebuild it like you do...? Nope, don't think so,sir! Good luck, though., I'm convinced that you'll achieve what you set out to do - to create a damn good looking naked TDM lady with lots of unique character

Anyway, some screen mod experimenting is not a total waste of time. One might come up with a solution some time that could be useful for thos of us who prefer fairings and screen despite of the wind pressure/turbulence problems...

[Geordie Guy]

On the thought of keeping the fairing and playing around with the screen.

For me lifting the screen by 8mm on each of the screws so the gap was the same, caused a lot of buffeting, more than with the mod I had before. This time the buffeting came form everywhere as the air spilled out from the sides.

Before I had approx 4mm at the nose and less up the sides. Thinking about, it acted like a funnel directing the air up the centre. So this time, I have kept the gap at the nose, but increased it to 6mm , then 3mm on the next pair and the nothing on the top. This should contain the air and smooth out buffeting at the top of the screen directly in front of the rider.

See how it goes..... ?

"you never know what works, untill you know what doesn't"

Cheers, Ivan

[wicklamulla]

You think our experiments are ever going to work?

Unless the screen is high enough, or wrapped round far enough to the turbulance happened PAST your body?

I guess, with any screen on we're going t o be pushing air out of the way, and there will always be the pressure difference behind the screen?

Did anyone experiment with the cutting holes/slots in the screen that was talked about a few months back?

Yes i did try it with a ropey old screen i have, i drilled several holes in it (pics to follow) and i tink it made a positive difference, only way to tell is fer me to retry it as it is now and then put a strip of gaffa tape over the holes and see if i can really notice a difference.

[TonyDevil]

Yes i did try it with a ropey old screen i have, i drilled several holes in it (pics to follow) and i tink it made a positive difference, only way to tell is fer me to retry it as it is now and then put a strip of gaffa tape over the holes and see if i can really notice a difference.

is no7 back on the road then?

[wicklamulla]

is no7 back on the road then?

sort of............

[TonyDevil]

sort of............

or