The Cobra "Ramp Grind" - a fix

[bumper[_4_]]

New "bumper" product announcement:

The ramp sliders on my 2002 Cobra trailer were metal on metal, bolt threads gouged the extruded aluminum floor rails and there was metal on metal wear.. Some later trailers have plastic washers, but those don't last or work well either. I made plastic sliders for my trailer a decade ago. They worked well but the design was not suited for easy consumer installation and I back burnered the idea. That is, until one owner pestered me for 3 years! :c).

The SRS (smooth ramp slider) kit uses a machined one piece slider of Ultra High Molecular Weight Polyethylene (UHMW PE). This material is almost as slippery as Teflon, and when it comes to abrasion resistance, is better than steel for many applications. One inch will stop a .45 ACP round (though I have yet to personally test this particular claim). Installation is easy, 20 minutes. The ramp moves as smooth as oil on glass.

The SRS kit is available now in limited quantities. I announced it last week on a glider model specific forum and had orders for 16 the first day - so I'm concerned with getting swamped (I have 20 kits available now and will make more). Price is $35 plus $4 shipping to USA, $12 shipping to other countries.

(insert my 6 letter "car part" name) @frontier.com for installation instructions, questions, and ordering info. Please include "SRS" in the title of your email.

I'll see if I can make this Google picture link work (the link is long, but when I copy and paste it into the search bar it works for me). If it doesn't work, you can ask for a picture if you email me.

https://lh3.googleusercontent.com/S84UHOmHQhA6Q0T0UJCYsw7oSDbOoAql0eL40wkfieztKu21uC iPdCSXvs4KdkIOKN6bKyth6IC79GVr7CroQ8kAm46qW9MBpGgO eJ1EDLWbwnQE7pVh-nL0mjTJJW5u713EV7OHoGlwWnh0cVJxgnEkRD6AAx7HbbmwyW-_jYAofUyHntUSMrgvK709O3F-wqeuYiBUbNji4cB3DLWEZnEILMZTWBYOFehOuXn-b2e0TnU51HAvvdCsPMtxDRhe89l_r2fL-9UbKFsdMBu46XpVF6wBTP6dh597BatEfhif2cXhtzOE-GYDuHVp5kW88glGNJa1mpOQXKxOnbjHftJun3XnvaCn1MEF2wr W0wv2BTcyvKaL1qs-0ARJ06_gYIZnwFrgLXrftzPwThQh8WxHkUOLCznb6OSRDil0j7 uX9JtYScCzI92IU1udP2xENHKJoY1xa30KbfIbwTs8xMiLKT2o RTNqSS0Co2Cn2W56GsaLZprLFmxBvc_LEE7Zv937vdlgti_X4Y UHchdFQoslj6uAW9fODFTx9-rmKd0FA9LbaqleA_DhEs4Mizbuthy9qiHGlT7HVzMR73TmKvkI 4xpgKT0N1UrEVNDoj7JwFGBnZttJjWs3=w851-h638-no


bumper

MKIV "high tech" yaw string & Quiet Vent
zz
Minden

[AS]

On Sunday, July 16, 2017 at 2:38:36 AM UTC-4, bumper wrote:
> New "bumper" product announcement:
>
> The ramp sliders on my 2002 Cobra trailer were metal on metal, bolt threads gouged the extruded aluminum floor rails and there was metal on metal wear. Some later trailers have plastic washers, but those don't last or work well either. I made plastic sliders for my trailer a decade ago. They worked well but the design was not suited for easy consumer installation and I back burnered the idea. That is, until one owner pestered me for 3 years! :c).
>
> The SRS (smooth ramp slider) kit uses a machined one piece slider of Ultra High Molecular Weight Polyethylene (UHMW PE). This material is almost as slippery as Teflon, and when it comes to abrasion resistance, is better than steel for many applications. One inch will stop a .45 ACP round (though I have yet to personally test this particular claim). Installation is easy, 20 minutes. The ramp moves as smooth as oil on glass.
>
> The SRS kit is available now in limited quantities. I announced it last week on a glider model specific forum and had orders for 16 the first day - so I'm concerned with getting swamped (I have 20 kits available now and will make more). Price is $35 plus $4 shipping to USA, $12 shipping to other countries.
>
> (insert my 6 letter "car part" name) @frontier.com for installation instructions, questions, and ordering info. Please include "SRS" in the title of your email.
>
> I'll see if I can make this Google picture link work (the link is long, but when I copy and paste it into the search bar it works for me). If it doesn't work, you can ask for a picture if you email me.
>
> https://lh3.googleusercontent.com/S84UHOmHQhA6Q0T0UJCYsw7oSDbOoAql0eL40wkfieztKu21uC iPdCSXvs4KdkIOKN6bKyth6IC79GVr7CroQ8kAm46qW9MBpGgO eJ1EDLWbwnQE7pVh-nL0mjTJJW5u713EV7OHoGlwWnh0cVJxgnEkRD6AAx7HbbmwyW-_jYAofUyHntUSMrgvK709O3F-wqeuYiBUbNji4cB3DLWEZnEILMZTWBYOFehOuXn-b2e0TnU51HAvvdCsPMtxDRhe89l_r2fL-9UbKFsdMBu46XpVF6wBTP6dh597BatEfhif2cXhtzOE-GYDuHVp5kW88glGNJa1mpOQXKxOnbjHftJun3XnvaCn1MEF2wr W0wv2BTcyvKaL1qs-0ARJ06_gYIZnwFrgLXrftzPwThQh8WxHkUOLCznb6OSRDil0j7 uX9JtYScCzI92IU1udP2xENHKJoY1xa30KbfIbwTs8xMiLKT2o RTNqSS0Co2Cn2W56GsaLZprLFmxBvc_LEE7Zv937vdlgti_X4Y UHchdFQoslj6uAW9fODFTx9-rmKd0FA9LbaqleA_DhEs4Mizbuthy9qiHGlT7HVzMR73TmKvkI 4xpgKT0N1UrEVNDoj7JwFGBnZttJjWs3=w851-h638-no
>
>
> bumper
>
> MKIV "high tech" yaw string & Quiet Vent
> zz
> Minden

Hi Bumper,

I am interested in one kit but your link does not work. It returns a big 'Entry verboten' sign.
Uli
'AS'

[[email protected]]

No luck with the link. Try sticking the photo in Dropbox and copying the link to a RAS post.

[bumper[_4_]]

Please try this link:


https://www.dropbox.com/s/beyd1sh78wr6g4n/Cobra%20Trailer%20SRS%20kit%5E.docx?dl=0

[AS]

On Sunday, July 16, 2017 at 11:12:43 AM UTC-4, bumper wrote:
> Please try this link:
>
>
> https://www.dropbox.com/s/beyd1sh78wr6g4n/Cobra%20Trailer%20SRS%20kit%5E.docx?dl=0

Link works - PM sent!
'AS'

[JS]

Installed an SRS kit this evening.
Chocks-to-chocks on a parked trailer was 45 minutes.
It is a significant improvement over the 8-or-9-year-old scraper hardware.
Jim

[bumper[_4_]]

Looks like I made a mistake on my "email" in an earlier post, I left out the letter m after bumper

(my name "car part") m @ frontier.com

I apologize for the mix up.

Drop box info at:

https://www.dropbox.com/s/beyd1sh78wr6g4n/Cobra%20Trailer%20SRS%20kit%5E.docx?dl=0

bumper
MKIV & QV
zz
Minden

[Dan Marotta]

You left out the "j", as well. Besides, I can read your email directly
from your post. Maybe that's just a Thunderbird thing...

On 7/19/2017 9:19 AM, bumper wrote:
> Looks like I made a mistake on my "email" in an earlier post, I left out the letter m after bumper
>
> (my name "car part") m @ frontier.com
>
> I apologize for the mix up.
>
> Drop box info at:
>
> https://www.dropbox.com/s/beyd1sh78wr6g4n/Cobra%20Trailer%20SRS%20kit%5E.docx?dl=0
>
> bumper
> MKIV & QV
> zz
> Minden

--
Dan, 5J

[bumper[_4_]]

On Wednesday, July 19, 2017 at 8:48:11 AM UTC-7, Dan Marotta wrote:
> You left out the "j", as well. Besides, I can read your email directly
> from your post. Maybe that's just a Thunderbird thing...
>
> On 7/19/2017 9:19 AM, bumper wrote:
> > Looks like I made a mistake on my "email" in an earlier post, I left out the letter m after bumper
> >
> > (my name "car part") m @ frontier.com
> >
> > I apologize for the mix up.
> >
> > Drop box info at:
> >
> > https://www.dropbox.com/s/beyd1sh78wr6g4n/Cobra%20Trailer%20SRS%20kit%5E.docx?dl=0
> >
> > bumper
> > MKIV & QV
> > zz
> > Minden
>
> --
> Dan, 5J

Dan,

Do I confuse easily, or what?! Actually, I'm using a couple of emails, the gmail one is bumperjm, while the frontier one is bumper m.

For anyone reading this who is trying to order a SRS kit, I've been somewhat overwhelmed by the response. I'm caught up with answering inquiries (so if you sent an email and didn't hear back, please try again) and heading to the post office to ship all orders to date.

thanks (I think :c) )

bumper

[Dave Nadler]

I installed a set on one of my trailers yesterday - very nice!
No more nasty grinding when sliding out the fuselage ramp!

Bumper sent me a pile to sell at Uvalde (you save the shipping charge).
Send me an email in Uvalde if you want a set.
Just the thing to keep crew entertained in the balmy afternoons
when we're out on task.

Thanks Bumper!

[JS[_5_]]

On Monday, July 24, 2017 at 5:41:27 AM UTC-7, Dave Nadler wrote:
> I installed a set on one of my trailers yesterday - very nice!
> No more nasty grinding when sliding out the fuselage ramp!
>
> Bumper sent me a pile to sell at Uvalde (you save the shipping charge).
> Send me an email in Uvalde if you want a set.
> Just the thing to keep crew entertained in the balmy afternoons
> when we're out on task.
>
> Thanks Bumper!

But much easier to do when it's not hot and humid.
Jim
(Uvalde SCUM)

[OHM Ω http://aviation.derosaweb.net]

Installed mine yesterday. The difference is amazing, like going from sand grinding to ice skating. Another great Bumper product.

A couple of thoughts (can't help myself);

- The kit replaces the ramp's sliding bolts located at the forward end. Getting those bolts off was confusing as the bolts appeared to have two heads! Huh? Some sort of puzzle for the uninitiated? I found out that one bolt "head" (top) is actually a nut that had been ground down flush. Picture at http://aviation.derosaweb.net/bumper/SRS.

- The instructions talk about removing the ramp and balancing it on the tail of the trailer and a mechanics creeper while you are replacing the sliding bolts. I found that placing the ramp onto 3 or 4 five-gallon buckets was most stable.

- My original aft rail to frame holddown bolts will need to be replaced due to getting terrifically mangled from, I think, repeated ramp deployment collisions. I heard that there are also suppose to be rubber bumpers on these bolts inside the rail but mine are missing in action. Might have been destroyed due to all those collisions! Picture at http://aviation.derosaweb.net/bumper/SRS.

Bottom line: Well worth the price!

[[email protected]]

My bolts were mangled as wll, so I bought a couple of 1/4" x 2.5" carriage bolts and lock nuts to replace these. Also bought a foot of I think it was 3/8" fuel line and cut two 1/2" pieces to make the bumpers. Bumper should add these bumpers to the kit :-)

On Tuesday, July 25, 2017 at 6:24:43 AM UTC-7, OHM Ω
> - My original aft rail to frame holddown bolts will need to be replaced due
> to getting terrifically mangled from, I think, repeated ramp deployment
> collisions. I heard that there are also suppose to be rubber bumpers on
> these bolts inside the rail but mine are missing in action. Might have
> been destroyed due to all those collisions!
> Picture at http://aviation.derosaweb.net/bumper/SRS.
>
> Bottom line: Well worth the price!

[[email protected]]

Bumper,

Oh great one in all things modified. I am like many in our flock that have older Cobra trailers that do NOT have the extra piece that keeps the wing dolly from flipping over. On all the newer trailers there is a little arm that has a roller that goes in a track on the side of the trailer to keep the wing dolly from flipping over.

Any chance in your spare time you come up with a mod for us? You would to a great service and save many a wing from repair.


Thanks,

Kevin Anderson
92

[bumper[_4_]]

On Tuesday, July 25, 2017 at 3:00:42 PM UTC-7, wrote:
> Bumper,
>
> Oh great one in all things modified. I am like many in our flock that have older Cobra trailers that do NOT have the extra piece that keeps the wing dolly from flipping over. On all the newer trailers there is a little arm that has a roller that goes in a track on the side of the trailer to keep the wing dolly from flipping over.
>
> Any chance in your spare time you come up with a mod for us? You would to a great service and save many a wing from repair.
>
>
> Thanks,
>
> Kevin Anderson
> 92

Kevin,

I'll have a look at that. Though it could take a while as I have stuff making smoke on the back burner. http://www.mmfabrication.com/ might be another source (good people). They told me they thought of making the SRS some years back, but didn't get around to it (while placing an order for mine!). I've done the same with tools I invented years ago, patenting only one (which did quite well) only to later see others market a few things I didn't think worthwhile.

bumper

[bumper[_4_]]

On Tuesday, July 25, 2017 at 8:13:44 AM UTC-7, wrote:
> My bolts were mangled as wll, so I bought a couple of 1/4" x 2.5" carriage bolts and lock nuts to replace these. Also bought a foot of I think it was 3/8" fuel line and cut two 1/2" pieces to make the bumpers. Bumper should add these bumpers to the kit :-)

> > Bottom line: Well worth the price!

Tom,

Thank you for the review. Apparently Cobra adds the short length of bumper hose to the stop bolts on some and on others doesn't bother. The bumper makes some sense with their metal bolt slider, as it would otherwise bang metal on metal into the stop bolt. The SRS sliders are of UHMW PE, an exceptionally impact resistant long chain polymer that provides some damping.

On some trailers, the head of the carriage bolt will butt against the SRS slider before the slider reaches the rubber hose bumper. This should not damage the SRS at anything resembling normal ramp extension speeds. Though one could grind off the front part of the carriage bolt head if desired - and add the hose I didn't include :c).

bumper

[OHM Ω http://aviation.derosaweb.net]

I have been assuming that the original bumper (rubber, not human) surrounds, and is held in place by, the aft carriage stop bolt. I just added secondary bumpers inside the track of the same type forward of the carriage stop bolt for extra collision dampening. They should stay put. Overkill? Nah. I just don't want anything to happen to my beautiful new Bumper (human, not rubber) SRS sliders, ultra high molecular weight notwithstanding!

[JS[_5_]]

The 2000 Cobra install yesterday required 2 extra washers on each bolt.
Still had the flexibility to lift the ramp up, and bolt clearance under the HDTV stuff.
That trailer has the ramp with a circular flat spot ground into it, previously featured the nuts ground down like OHM's.
Jim

[bumper[_4_]]

On Thursday, July 27, 2017 at 5:23:47 AM UTC-7, OHM Ω http://aviation.derosaweb.net wrote:
> I have been assuming that the original bumper (rubber, not human) surrounds, and is held in place by, the aft carriage stop bolt. I just added secondary bumpers inside the track of the same type forward of the carriage stop bolt for extra collision dampening. They should stay put. Overkill? Nah.. I just don't want anything to happen to my beautiful new Bumper (human, not rubber) SRS sliders, ultra high molecular weight notwithstanding!

Thank you for the compliment!

Adding a bumper (not me) forward of the original bolt (with or without a bumper), may cause a problem in that it can prevent the slide from going far enough aft.

Two unintended things could happen, the ramp tray may not get as close to the floor as intended, and this could make it difficult to get the fuselage dolly to roll from the floor onto the ramp. Also the ramp tray "lock pin" (the little screw that is located near the forward end of the tray and extends down below the tray). As you put the jack end of the ramp on the ground, the lock pin is supposed to fit down behind the floor rear lip to prevent the ramp from shifting forward as the glider is positioned on or pushed up the ramp. The stop pin in the reason you have to lift the jack end of the ramp up to get the ramp to slide in.

Don't worry about that UHMW slider - it's tougher than both of us! Just don't pull the ramp out at a run and things will be fine.

[Michael Opitz]

At 06:38 16 July 2017, bumper wrote:
>New "bumper" product announcement:
>
>The ramp sliders on my 2002 Cobra trailer were metal on metal,
bolt
>threads=
> gouged the extruded aluminum floor rails and there was metal on
metal
>wear=
>.. Some later trailers have plastic washers, but those don't last or
work
>we=
>ll either. I made plastic sliders for my trailer a decade ago. They
worked
>=
>well but the design was not suited for easy consumer installation
and I
>bac=
>k burnered the idea. That is, until one owner pestered me for 3
years! :c).
>
>The SRS (smooth ramp slider) kit uses a machined one piece slider
of Ultra
>=
>High Molecular Weight Polyethylene (UHMW PE). This material is
almost as
>sl=
>ippery as Teflon, and when it comes to abrasion resistance, is
better than
>=
>steel for many applications. One inch will stop a .45 ACP round
(though I
>h=
>ave yet to personally test this particular claim). Installation is easy,
>20=
> minutes. The ramp moves as smooth as oil on glass.
>
>The SRS kit is available now in limited quantities. I announced it
last
>wee=
>k on a glider model specific forum and had orders for 16 the first
day -
>so=
> I'm concerned with getting swamped (I have 20 kits available now
and will
>=
>make more). Price is $35 plus $4 shipping to USA, $12 shipping to
other
>co=
>untries.
>
>(insert my 6 letter "car part" name) @frontier.com for installation
>instruc=
>tions, questions, and ordering info. Please include "SRS" in the title
of
>y=
>our email.
>

I installed the SRS kit today. It took about an hour due to the 2
carriage stop bolts on the ends of the rails being bent like pretzels
(from the rear of the trailer having occasionally dragged over the
last 18 years). If the bolts had been straight, the whole process
would have taken ~15 minutes to do. Nice smooth gliding action
now. Thanks.
RO

[Juanman[_2_]]

On Sunday, July 30, 2017 at 10:00:13 PM UTC-4, Michael Opitz wrote:
> At 06:38 16 July 2017, bumper wrote:
> >New "bumper" product announcement:
> >
> >The ramp sliders on my 2002 Cobra trailer were metal on metal,
> bolt
> >threads=
> > gouged the extruded aluminum floor rails and there was metal on
> metal
> >wear=
> >.. Some later trailers have plastic washers, but those don't last or
> work
> >we=
> >ll either. I made plastic sliders for my trailer a decade ago. They
> worked
> >=
> >well but the design was not suited for easy consumer installation
> and I
> >bac=
> >k burnered the idea. That is, until one owner pestered me for 3
> years! :c).
> >
> >The SRS (smooth ramp slider) kit uses a machined one piece slider
> of Ultra
> >=
> >High Molecular Weight Polyethylene (UHMW PE). This material is
> almost as
> >sl=
> >ippery as Teflon, and when it comes to abrasion resistance, is
> better than
> >=
> >steel for many applications. One inch will stop a .45 ACP round
> (though I
> >h=
> >ave yet to personally test this particular claim). Installation is easy,
> >20=
> > minutes. The ramp moves as smooth as oil on glass.
> >
> >The SRS kit is available now in limited quantities. I announced it
> last
> >wee=
> >k on a glider model specific forum and had orders for 16 the first
> day -
> >so=
> > I'm concerned with getting swamped (I have 20 kits available now
> and will
> >=
> >make more). Price is $35 plus $4 shipping to USA, $12 shipping to
> other
> >co=
> >untries.
> >
> >(insert my 6 letter "car part" name) @frontier.com for installation
> >instruc=
> >tions, questions, and ordering info. Please include "SRS" in the title
> of
> >y=
> >our email.
> >
>
> I installed the SRS kit today. It took about an hour due to the 2
> carriage stop bolts on the ends of the rails being bent like pretzels
> (from the rear of the trailer having occasionally dragged over the
> last 18 years). If the bolts had been straight, the whole process
> would have taken ~15 minutes to do. Nice smooth gliding action
> now. Thanks.
> RO

I installed mine yesterday (with help from PG). My bolts were also twisted, but both were exactly the same, so I think they were actually meant to be like that... I also found that you have to push the top of the bolt down while unscrewing the bottom bolt so that the bolt doesn't rotate.Love the silent gliding action of the SRS!!

[bumper[_4_]]

I'm looking for feedback on your SRS (smooth ramp slider) installation please, especially Cobra trailers manufactured '95 and prior.

I'm fairly confident the SRS fits all trailers from 95 to present. However there's a gray area prior to 95 (and I'm not sure of the year) when Cobra was using different floor track designs.

I have seen 3 different design floor channels or tracks. An '88 Cobra with steel tracks (which SRS happens to fit), an '89 with aluminum extrusion tracks of smaller cross section than current design (SRS can be modified to fit this smaller track), and finally the current version Cobra seems to have standardized on since about 1995 and for which the SRS was designed.

Thanks,

bumper

[[email protected]]

Bumper,

You asked for feedback: I have a 1989 Cobra trailer with the smaller extruded aluminum railing. The SRS did not fit inside the rail.

After speaking with you, and being pleased with your offer of support, I modified the shape of the SRS. The effort was minimal, but it did add an extra hour to the installation because I proceeded so slowly.

Yesterday, I pulled out the ramp and realized that I had forgotten that the SRS was installed. The missing grinding sound immediately go my attention. The smooth gliding sound brought a smile. Yes, the SRS is very nice!

Raul Boerner
LS6
DM

[[email protected]]

Bumper,

You asked for feedback: I have a 1989 Cobra trailer with the smaller extruded aluminum railing. The SRS did not fit inside the rail.

After speaking with you, and being pleased with your offer of support, I modified the shape of the SRS. The effort was minimal, but it did add an extra hour to the installation because I proceeded so slowly.

Yesterday, I pulled out the ramp and realized that I had forgotten that the SRS was installed. The missing grinding sound immediately got my attention. The smooth gliding sound brought a smile. Yes, the SRS is very nice!

Raul Boerner
LS6
DM

[Dave Nadler]

On Monday, July 24, 2017 at 7:41:27 AM UTC-5, Dave Nadler wrote:
> Bumper sent me a pile to sell at Uvalde (you save the shipping charge).

All sold, Thanks again Bumper!

[[email protected]]

On Monday, August 7, 2017 at 9:25:40 AM UTC-7, Dave Nadler wrote:
> On Monday, July 24, 2017 at 7:41:27 AM UTC-5, Dave Nadler wrote:
> > Bumper sent me a pile to sell at Uvalde (you save the shipping charge).
>
> All sold, Thanks again Bumper!

The sound of silence is awesome! Great product!!

[OHM Ω http://aviation.derosaweb.net]

On Monday, August 7, 2017 at 3:47:27 PM UTC-5, wrote:
>
> The sound of silence is awesome! Great product!!

While the "Sounds of Silence" (Simon & Garfunkle, 1964) is great, I think that the more important advantage of the SRS is that the forward steel track bolt is no longer slowly grinding down the aluminum track into atoms. MAN, those tracks would not be fun to replace. I would be curious if the older Cobra trailers have seen any deformation of the track.

[Jonathan St. Cloud]

On Tuesday, August 8, 2017 at 6:46:54 AM UTC-7, OHM Ω http://aviation.derosaweb.net wrote:
> On Monday, August 7, 2017 at 3:47:27 PM UTC-5, wrote:
> >
> > The sound of silence is awesome! Great product!!
>
> While the "Sounds of Silence" (Simon & Garfunkle, 1964) is great, I think that the more important advantage of the SRS is that the forward steel track bolt is no longer slowly grinding down the aluminum track into atoms. MAN, those tracks would not be fun to replace. I would be curious if the older Cobra trailers have seen any deformation of the track.

"Sound of Silence" done better than original https://www.youtube.com/watch?v=Bk7RVw3I8eg

[Charlie M. (UH & 002 owner/pilot)]

Maybe not better in my mind, but they were WAAAAY out of their genre, they did good, thanks for the link. Worth listening to.

[bumper[_4_]]

On Monday, August 7, 2017 at 1:47:27 PM UTC-7, wrote:
>
> The sound of silence is awesome! Great product!!

Thank you!

Besides the obvious quiet, smooth and almost frictionless ramp movement, the SRS is designed to stop any further damage to the floor tracks caused by the original factory hardware.

[Sean Fidler]

On Sunday, July 16, 2017 at 2:38:36 AM UTC-4, bumper wrote:
> New "bumper" product announcement:
>
> The ramp sliders on my 2002 Cobra trailer were metal on metal, bolt threads gouged the extruded aluminum floor rails and there was metal on metal wear. Some later trailers have plastic washers, but those don't last or work well either. I made plastic sliders for my trailer a decade ago. They worked well but the design was not suited for easy consumer installation and I back burnered the idea. That is, until one owner pestered me for 3 years! :c).
>
> The SRS (smooth ramp slider) kit uses a machined one piece slider of Ultra High Molecular Weight Polyethylene (UHMW PE). This material is almost as slippery as Teflon, and when it comes to abrasion resistance, is better than steel for many applications. One inch will stop a .45 ACP round (though I have yet to personally test this particular claim). Installation is easy, 20 minutes. The ramp moves as smooth as oil on glass.
>
> The SRS kit is available now in limited quantities. I announced it last week on a glider model specific forum and had orders for 16 the first day - so I'm concerned with getting swamped (I have 20 kits available now and will make more). Price is $35 plus $4 shipping to USA, $12 shipping to other countries.
>
> (insert my 6 letter "car part" name) @frontier.com for installation instructions, questions, and ordering info. Please include "SRS" in the title of your email.
>
> I'll see if I can make this Google picture link work (the link is long, but when I copy and paste it into the search bar it works for me). If it doesn't work, you can ask for a picture if you email me.
>
> https://lh3.googleusercontent.com/S84UHOmHQhA6Q0T0UJCYsw7oSDbOoAql0eL40wkfieztKu21uC iPdCSXvs4KdkIOKN6bKyth6IC79GVr7CroQ8kAm46qW9MBpGgO eJ1EDLWbwnQE7pVh-nL0mjTJJW5u713EV7OHoGlwWnh0cVJxgnEkRD6AAx7HbbmwyW-_jYAofUyHntUSMrgvK709O3F-wqeuYiBUbNji4cB3DLWEZnEILMZTWBYOFehOuXn-b2e0TnU51HAvvdCsPMtxDRhe89l_r2fL-9UbKFsdMBu46XpVF6wBTP6dh597BatEfhif2cXhtzOE-GYDuHVp5kW88glGNJa1mpOQXKxOnbjHftJun3XnvaCn1MEF2wr W0wv2BTcyvKaL1qs-0ARJ06_gYIZnwFrgLXrftzPwThQh8WxHkUOLCznb6OSRDil0j7 uX9JtYScCzI92IU1udP2xENHKJoY1xa30KbfIbwTs8xMiLKT2o RTNqSS0Co2Cn2W56GsaLZprLFmxBvc_LEE7Zv937vdlgti_X4Y UHchdFQoslj6uAW9fODFTx9-rmKd0FA9LbaqleA_DhEs4Mizbuthy9qiHGlT7HVzMR73TmKvkI 4xpgKT0N1UrEVNDoj7JwFGBnZttJjWs3=w851-h638-no
>
>
> bumper
>
> MKIV "high tech" yaw string & Quiet Vent
> zz
> Minden

I bought this product in Uvalde, installed it today and it works great, as advertised.

Cobra should take notice.

Sean

[bumper[_4_]]

On Monday, August 14, 2017 at 10:08:53 AM UTC-7, Sean Fidler wrote:

>
> I bought this product in Uvalde, installed it today and it works great, as advertised.
>
> Cobra should take notice.
>
> Sean

Sean,

Thanks for the review!

I'm told that Cobra was told about the issue a few years back, and they added the plastic washers. That helped, but didn't last long or keep the bolt threads from damaging the tracks. My SRS should last longer than the trailer. There are plans to show the SRS to Spindelberger. I can supply them, or they can copy the design. For me, it's not about money.

I enjoy the challenge of inventing stuff - and I like to share - and yes, there's some pride involved. The tooling and fixtures to make things efficiently is also fun. But when it comes down to actually making things production line, it can start feeling like work if it gets too demanding. That was the reason behind my removed the MKIV yaw string and Quiet Vent from distribution (Cumulus Soaring was doing too good a job.) I still sell all my things direct.

And I'm not bored with the SRS quite yet, sold and orders pending over 120 sets in a month with no real advertising! I'm still amazed :c)

(Thanks Dave Nadler for spreading the joy at Uvalde!)

bumper

[Jonathan St. Cloud]

On Tuesday, August 15, 2017 at 1:28:09 PM UTC-7, bumper wrote:
> On Monday, August 14, 2017 at 10:08:53 AM UTC-7, Sean Fidler wrote:
>
> >
> > I bought this product in Uvalde, installed it today and it works great, as advertised.
> >
> > Cobra should take notice.
> >
> > Sean
>
> Sean,
>
> Thanks for the review!
>
> I'm told that Cobra was told about the issue a few years back, and they added the plastic washers. That helped, but didn't last long or keep the bolt threads from damaging the tracks. My SRS should last longer than the trailer. There are plans to show the SRS to Spindelberger. I can supply them, or they can copy the design. For me, it's not about money.
>
> I enjoy the challenge of inventing stuff - and I like to share - and yes, there's some pride involved. The tooling and fixtures to make things efficiently is also fun. But when it comes down to actually making things production line, it can start feeling like work if it gets too demanding. That was the reason behind my removed the MKIV yaw string and Quiet Vent from distribution (Cumulus Soaring was doing too good a job.) I still sell all my things direct.
>
> And I'm not bored with the SRS quite yet, sold and orders pending over 120 sets in a month with no real advertising! I'm still amazed :c)
>
> (Thanks Dave Nadler for spreading the joy at Uvalde!)
>
> bumper

I get a smile every time I pull the ramp out. Having a difficult day today, thinking of driving out to glider port just to hear the silence as I slide the ramp out!

[bumper[_4_]]

On Tuesday, August 15, 2017 at 1:50:49 PM UTC-7, Jonathan St. Cloud wrote:

> I get a smile every time I pull the ramp out. Having a difficult day today, thinking of driving out to glider port just to hear the silence as I slide the ramp out!

Thank you!

In the spirit of seldom leaving well enough alone, or fix it 'till it's broke, I've come out with SRS ver 2. All new SRS shipped are version 2.

The factory leaves the ramp slider bolts loose so the ramp jack end can hinge up and down. The original SRS was installed in similar fashion. Ver 2 adds a urethane or silicone rubber spacer "spring" - a 1/4" long 1/4" ID rubber tube, under the bolt head to take out the slop and prevent assembly from rattling down the road. Choices:

You can use your SRS as is, it'll rattle but who cares?

You can provide and add a 1/4" (6mm) ID length of rubber fuel hose as the spacer.

You can order the V2 spacers from me at no cost.

Install takes a few minutes, no need to remove ramp. It is important to follow new SRS bolt install and adjustment procedure in new instructions (see link below). SRS bolts are unscrewed with ramp in place, spacers added and bolts reinstalled.

https://www.dropbox.com/s/beyd1sh78wr6g4n/Cobra%20Trailer%20SRS%20kit%5E.docx?dl=0

To get your free upgrade kit, send an email to: (my nickname as below, followed by the letter "m", so 7 letters) at frontier dot com

Subject line for email, "SRS V2".

If you are in another country and know of other SRS owners, please consider combining shipment (state number of kits requested in email).

Note there may be a delay in shipping and email acknowledgement - I'm going to go see the solar eclipse.

bumper