Location: Atherstone, Warwickshire, United Kingdom
Posts: 140
Hiss Flaps
Here you go chaps - hiss flaps.
Two pieces of an old Shoei visor fettled and attached via the two screws at the top of the fairing. This is is only version 1 and there are things that can be improved however:
- The helmet noise at 90mph is about the same as wearing earplugs without the flaps.
- Below 90 mph the wind noise is very low indeed.
- The blast that I normally get in the chest is hitting my shoulders. Very little wind is reaching my neck area.
Serious improvement and I think they would work very well with any screen. I'm using an MRA touring and it's quiet - very quiet.
Sorry about the screws - They are the only M5's I had that were long enough. Version 2 will be much smarter!
Looks conceptually like something I added to my Eldorado a long time ago!
It looks like you are using metal screws. Nothing wrong with that, but if you use nylon nuts/bolts (or screws) you are less likely to bind and crack any of the plastics.
__________________
2011 MTS1200s sport
'03 ST4s (sold)
Literally a ton of Moto Guzzis
Location: Atherstone, Warwickshire, United Kingdom
Posts: 140
Quote:
Originally Posted by jrt
Looks conceptually like something I added to my Eldorado a long time ago!
It looks like you are using metal screws. Nothing wrong with that, but if you use nylon nuts/bolts (or screws) you are less likely to bind and crack any of the plastics.
The original fasteners are metal. I used a grommet and some furry Velcro under the plastic piece to protect all the original parts.
Don't go using nylon screws when Ducati designed it with steel!
You've inspired me. I remember a thread on another board where a $5 protective face shield (I believe the original application was a cheap welding shield) was used to make a wind screen for a DS bike. I'm betting the same face shield could be used for a DIY set of "wings" like you've done (vs. hacking up a $30-40 helmet shield ).
Do you notice any movement in the flaps at speed? I'm trying to gauge how rigid/robust to make the mount points.
__________________ Current:
2012 Moto Guzzi Stelvio NTX
2010 Ducati Multistrada 1200 S Sport - FOR SALE - PM me if interested
2008 Yamaha WR250R Gone:
Moto Guzzi Norge, BMW R1200GS, BMW F650 GS Dakar, KTM 520 EXC, Suzuki DRZ400E, and the list goes on.......
Last edited by Sock Monkey; Apr 6th, 2012 at 7:41 pm.
Sock,
I'm new to the MTS - 2 days in fact - but it's obvious I need to solve the wind issue before I take this baby on any long trips. I read your V-Stream thread with interest and am wondering if you feel that even with a V-Stream, there is sufficient room for improvement and the deflectors the OP implemented might provide worthwhile benefit.
Staying tuned.....
__________________
"I haven't been everywhere, but it's on the list."
'12 Ducati Multistrada 1200ST
'10 KTM 990 ADV
'10 KTM 530 EXC
'04 H-D Sportster 1200C (Wife's)
Location: Atherstone, Warwickshire, United Kingdom
Posts: 140
Quote:
Originally Posted by Sock Monkey
Nice work CP.
You've inspired me. I remember a thread on another board where a $5 protective face shield (I believe the original application was a cheap welding shield) was used to make a wind screen for a DS bike. I'm betting the same face shield could be used for a DIY set of "wings" like you've done (vs. hacking up a $30-40 helmet shield ).
Do you notice any movement in the flaps at speed? I'm trying to gauge how rigid/robust to make the mount points.
The shield I used was a knackered 10 year old item from a helmet that was destined for the skip. I don't advocate using a new one! The plastic is rigid though and perfect for the job. V2 will be CNC routed in lexan and will have a more complex profile.
The flaps are absolutely rigid as shown and the fixing method is fine. The original screws are too short so you need M5 x 25mm. I did not have any black ones in my garage and I'm ashamed to have had to use some left over slot heads from a furniture project. After the Easter holiday I'll pick up some black Torx versions. The gap between the two fasteners is 74mm but they are at an angle so you need to use a grommet under the screw head to take up the diff. I used a grommet cut in half which was just right I tried a strip of Velcro to fix the flaps at first (whilst I was experimenting) but it wouldn't stick firmly enough to the fairing liner bodywork however I left the furry part as a gasket to protect the bike.
I'll post a drawing later for anyone who wants to knock up some DIY versions. In the UK we don't have Harbor Freight but B&Q sell acetate sheet for a few pounds that is perfect for the job.
After a couple of rides last night I can say that these things work really well. No need for earplugs now and my C3 is as quiet as its supposed to be.
I think that there is room for improvement in the profile of the flaps but I do like the curve of the Shoei visor - they look Italian as opposed to the tank armour shape of the things that BMW fit. I think a moulded item is called for once I've optimised the shape.
Last edited by Captain_Plummet; Apr 7th, 2012 at 4:40 am.
Reason: Grammar and punctuation courtesy of iPhone....
Sock,
I'm new to the MTS - 2 days in fact - but it's obvious I need to solve the wind issue before I take this baby on any long trips. I read your V-Stream thread with interest and am wondering if you feel that even with a V-Stream, there is sufficient room for improvement and the deflectors the OP implemented might provide worthwhile benefit.
Staying tuned.....
The VStream is loads better than stock at reducing wind at my shoulders and reducing the "dirty" air coming in from the area that CP is addressing, but it's not perfect! I think the addition of "CP's Wings (tm)" will make it that much better, so I'll give it a go and see how quiet my Mutley can get.
As I've said numerous times, it's a breezy bike and will never provide the quiet pocket that a Goldwing has, but then it's not 900lbs of rolling lard either. Besides, this looks like a <$10 project, which is right in my price range.
-SM
__________________ Current:
2012 Moto Guzzi Stelvio NTX
2010 Ducati Multistrada 1200 S Sport - FOR SALE - PM me if interested
2008 Yamaha WR250R Gone:
Moto Guzzi Norge, BMW R1200GS, BMW F650 GS Dakar, KTM 520 EXC, Suzuki DRZ400E, and the list goes on.......
The shield I used was a knackered 10 year old item from a helmet that was destined for the skip. I don't advocate using a new one! The plastic is rigid though and perfect for the job. V2 will be CNC routed in lexan and will have a more complex profile.
The flaps are absolutely rigid as shown and the fixing method is fine. The original screws are too short so you need M5 x 25mm i did not have any black ones in my garage and im ashamed to have had to use some left over slot heads from a furniture project. After the Easter holiday I'll pick up some black Torx versions The gap between the two fasteners is 74mm but they are at an angle so you need to use a grommet under the screw head to take up the diff. I used a grommet cut in half which was just right I tried a strip of Velcro to fix the flaps at first (whilst I was experimenting) but it wouldn't stick firmly enough to the fairing liner bodywork however I left the furry part as a gasket to protect the bike.
I'll post a drawing later for anyone who wants to knock up some DIY versions. In the UK we don't have Harbor Freight but B&Q sell acetate sheet for a few pounds that is perfect for the job.
After a couple of rides last night I can say that these things work really well. No need for earplugs now and my C3 is as quiet as its supposed to be.
I think that there is room for improvement in the profile of the flaps but I do like the curve of the Shoei visor - they look Italian as opposed to the tank armour shape of the things that BMW fit. I think a moulded item is called for once I've optimised the shape.
Thanks for that CP!
Good grief, CNC routed in Lexan?!?! You're gettin' a little crazy methinks. What, a Dremel and some painters tape isn't good enough for ya?
Sounds like you're going all the way with this. Good on ya! Can't wait to see V2.
-SM
__________________ Current:
2012 Moto Guzzi Stelvio NTX
2010 Ducati Multistrada 1200 S Sport - FOR SALE - PM me if interested
2008 Yamaha WR250R Gone:
Moto Guzzi Norge, BMW R1200GS, BMW F650 GS Dakar, KTM 520 EXC, Suzuki DRZ400E, and the list goes on.......
Location: Atherstone, Warwickshire, United Kingdom
Posts: 140
Quote:
Originally Posted by Sock Monkey
The VStream is loads better than stock at reducing wind at my shoulders and reducing the "dirty" air coming in from the area that CP is addressing, but it's not perfect! I think the addition of "CP's Wings (tm)" will make it that much better, so I'll give it a go and see how quiet my Mutley can get.
As I've said numerous times, it's a breezy bike and will never provide the quiet pocket that a Goldwing has, but then it's not 900lbs of rolling lard either. Besides, this looks like a <$10 project, which is right in my price range.
Location: Atherstone, Warwickshire, United Kingdom
Posts: 140
Quote:
Originally Posted by Sock Monkey
The VStream is loads better than stock at reducing wind at my shoulders and reducing the "dirty" air coming in from the area that CP is addressing, but it's not perfect! I think the addition of "CP's Wings (tm)" will make it that much better, so I'll give it a go and see how quiet my Mutley can get.
As I've said numerous times, it's a breezy bike and will never provide the quiet pocket that a Goldwing has, but then it's not 900lbs of rolling lard either. Besides, this looks like a <$10 project, which is right in my price range.
-SM
As promised, here are a couple more pics and a drawing of the V2 version that I'm having cut. I think the slightly taller profile will help even more, although the current DIY version is pretty good.
The holes need to be 8mm to allow for easy fitting and the angle of the screw as they enter the bushes in the fairing. I've used M5 x 30mm screws but 25mm would be fine. There is plenty of room behind the threaded fairing bushes which are through-holes so there's no danger of damaging the expensive bits.
I made rubber washers by cutting a grommet in half. This works well and looks fine. I do recommend using a gasket between the wing and the bike's plastic to prevent wear marks. Velcro is perfect for this but I guess self amalgamating tape or similar would be good also.
Take care cutting the perspex. It's unforgiving if you are trying to use a knife. A hobby bandsaw would be the thing.
).
will make it that much better, so I'll give it a go and see how quiet my Mutley can get.
Besides, this looks like a <$10 project, which is right in my price range. 
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