919 Thin Tail - Wrist Twisters
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post #1 of 35 Old 01-11-2016, 08:35 PM Thread Starter
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919 Thin Tail

My OCD has had a bone to pick with the enormous width of the 919 tail. So when I had the opportunity to fix that after my wreck I jumped on it. This is my first experience working with fiberglass so please chime in with any method tips if you have them.

Used gravity to shape the fiberglass cloth.
Each side took 24 hours
Once both sides were hardened I began cutting the plastic away with a dremil (Ended up using a grinder with a thin cutting blade after burning up the motor)
Cut a line to add more fiberglass cloth for the tail
Again using gravity to keep the preferred form
Reinforced with a couple extra layers of fiberglass cloth, cut and sanded smooth.

Added Loads of bondo to fill in to the desired shape
Forgot to snap pictures after sanding the bondo. The next step for mounting is cutting the grab rail mounts and painting them to prevent rust.
Left the end of the tail with hard lines thinking I would like it... I will be resanding it soon to smooth out the lines.
Next was installing the LED strip tail light off eBay for 17-24 dollars.
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post #2 of 35 Old 01-11-2016, 08:39 PM Thread Starter
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All in all a very subtle and not so noticeable mod... But for an OCD person like myself I am very pleased!

Again the hardline will be corrected and smoothed out. Still playing around with the finished design.
Anyway, hope this helped anyone who might be considering a tail changeup.
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post #3 of 35 Old 01-11-2016, 09:56 PM
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I actually like it, would only work with low mount exhaust but still pretty slick, Great work!!
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post #4 of 35 Old 01-12-2016, 05:19 AM
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Looks great. Very nice work!
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post #5 of 35 Old 01-12-2016, 06:16 AM
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I really really really like that... nice work
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post #6 of 35 Old 01-12-2016, 06:23 AM
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NOICE!
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post #7 of 35 Old 01-12-2016, 07:59 AM
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Looks great. The only suggestion I would have had would be to mold the fiberglass so that the tail blends a bit better with the box under tail that holds the ECU.

Builds like this make me miss my 9er...
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post #8 of 35 Old 01-12-2016, 10:09 AM
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Quote:
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Looks great. Very nice work!
+1 nice work and I bet that tail section is indestructible now at 10lb

BTW, what LED lights are those below the tag?
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post #9 of 35 Old 01-12-2016, 10:51 AM
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How heavy did it end up being? Looked like a very large resin content. May have benefited from absorbent cloth, perforated plastic film and a vacuum.

2004 919 Uranium

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post #10 of 35 Old 01-12-2016, 11:19 AM Thread Starter
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The tail would have been ridiculously light had I not compensated with so much bondo. Which is why I'm going to attempt a mold to make it of either only fiberglass or carbon fiber for the next one.

The old tail with the light and the metal bits I cut off weighed 2.56 lbs

The new tail weighs 2.79 lbs

So yes it is currently heavier but I hope to remedy that with a lighter tail next try.

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post #11 of 35 Old 01-12-2016, 11:29 AM
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Looks good, but plate, turn signal, and brake are probably not easy to see.


At least that was my impression from the pictures, so I could be wrong. Don't get me wrong, I love custom bike work, but I don't like to lessen the safety features. Too many idiots in cars with cell phones!


I hope I am wrong, if not, please be extra careful!
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post #12 of 35 Old 01-12-2016, 11:36 AM
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But it LOOKS lighter so we're all good
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post #13 of 35 Old 01-12-2016, 04:57 PM
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The end result is WAY better than I thought it might be. Very nice indeed. It really goes well with the other bike mods.
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post #14 of 35 Old 01-12-2016, 05:13 PM
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Damn! I love it!!! Great work!!!
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post #15 of 35 Old 01-13-2016, 02:20 AM
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Nice work! Looks great!
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post #16 of 35 Old 01-13-2016, 01:40 PM
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Lightbulb 919 tailer

A++++ wish i would have tried it...instead i cut the passenger pegs and coated the tail
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post #17 of 35 Old 01-13-2016, 01:49 PM
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Yeah, the tail looks good. Nice job. But, overall the bike looks totally badass! As a new member here I'm wondering if you have threads on your whole build. The forks, headlight, bellypan, exhaust, paint, etc. are all gorgeous.

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post #18 of 35 Old 01-15-2016, 09:42 AM Thread Starter
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Quote:
Originally Posted by StuDog View Post
Looks good, but plate, turn signal, and brake are probably not easy to see.


At least that was my impression from the pictures, so I could be wrong. Don't get me wrong, I love custom bike work, but I don't like to lessen the safety features. Too many idiots in cars with cell phones!


I hope I am wrong, if not, please be extra careful!
The LED's are deceptively bright. Lights up the rear tire and acts as a flashing ground effect. SUV cops and cars can all see my tail light perfectly from behind. The only thing that can't see my tag are the Toll cameras high in the sky.
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post #19 of 35 Old 01-15-2016, 09:46 AM Thread Starter
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Quote:
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+1 nice work and I bet that tail section is indestructible now at 10lb

BTW, what LED lights are those below the tag?
Here's a link for $14 of the same one I bought for $24: Universal 32 LED Motorcycle Light Strip Tail Brake Stop Turn Signal Flexible 8" | eBay

Come's with 3m adhesive tape on the back and is very easy to wire up. You can get them cheaper from china but it'll take a month to get to you. This one ships from USA. Hope this helps
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post #20 of 35 Old 01-15-2016, 02:58 PM
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Wolf, that is sick man. Your my hero for tackling the one grip I had on the Hornet. It almost makes me want to track down the guy who bought mine and buy it back, lol.
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post #21 of 35 Old 01-16-2016, 05:55 PM Thread Starter
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Quote:
Originally Posted by dragontail View Post
Yeah, the tail looks good. Nice job. But, overall the bike looks totally badass! As a new member here I'm wondering if you have threads on your whole build. The forks, headlight, bellypan, exhaust, paint, etc. are all gorgeous.

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Thanks, Here's a thread which contains most of the steps.
https://www.wristtwisters.com/forums/...ess-33394.html
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post #22 of 35 Old 01-22-2016, 06:36 AM
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It does look amazing but I get a feeling that some pieces will fall in time... Especially paint pieces.

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post #23 of 35 Old 01-26-2016, 10:56 AM
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Duuuude. I wish I had my wreck after yours. I've always wanted a skinny tail on, well most every bike. That looks awesome! It also looked like a lot of man hours. Thanks for documenting and sharing. Again, that looks great!

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post #24 of 35 Old 01-26-2016, 12:35 PM
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Quote:
Originally Posted by Wolf View Post
The LED's are deceptively bright. Lights up the rear tire and acts as a flashing ground effect. SUV cops and cars can all see my tail light perfectly from behind. The only thing that can't see my tag are the Toll cameras high in the sky.
2 fukn BAD you don't work for Honda

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post #25 of 35 Old 01-26-2016, 03:17 PM
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Quote:
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The LED's are deceptively bright. Lights up the rear tire and acts as a flashing ground effect. SUV cops and cars can all see my tail light perfectly from behind. The only thing that can't see my tag are the Toll cameras high in the sky.
Some of the newer toll arches have low angle secondary cameras, just FYI.

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post #26 of 35 Old 02-01-2016, 11:34 AM
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what kind header you used to have low mounted exhaust

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post #27 of 35 Old 02-03-2016, 06:27 PM
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what kind header you used to have low mounted exhaust
CBR900RR

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post #28 of 35 Old 02-04-2016, 10:12 AM Thread Starter
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It does look amazing but I get a feeling that some pieces will fall in time... Especially paint pieces.
It's held up so far already added another 2k miles .

What do you mean by painted pieces?
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post #29 of 35 Old 02-04-2016, 10:15 AM Thread Starter
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what kind header you used to have low mounted exhaust
Typically people use the 900rr headers. A good friend of mine is an excellent welder so I cut the stock headers and welded an R6 mid pipe on seen here https://www.wristtwisters.com/forums/...s-33394-4.html
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post #30 of 35 Old 02-04-2016, 10:52 AM
just send it.
 
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It looks like your USD forks are a little short. What is that black hexagonal piece you are using to compensate for the dropped forks? I've got a USD conversion on my SV650 and I'm looking for exactly that.

I will now lurk upon all your old posts to see if it's mentioned elsewhere.

edit: holy crap... $200... guess I'm going without.



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post #31 of 35 Old 02-04-2016, 11:09 AM
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It's crazy what they want for those extenders. For that you could buy the longer forks (06-07 GSXR 600/750 are the longest).

'96 DR650, '01 SV650, '10 Aprilia Tuono 1000R
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post #32 of 35 Old 02-04-2016, 11:30 AM
just send it.
 
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I'd say 3D print them, sell them and make a fortune, but I don't know if I would want to be the test dummy if it fails.

My dad does however have a machine shop. Something like this could be hammered out pretty easily on his lathe. Only tough part would be the hexogonal shape... but I don't know if that serves any real purpose. Are these caps a sort of 'one size fits all' sort of thing?



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post #33 of 35 Old 02-04-2016, 12:37 PM
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They replace the existing caps, so specific to showa forks of that diameter/design. Plastic would not hold. Wolf can give more specifics since he actually has them.

You might be able to fix things a little by moving to a 70 series front tire if you haven't already.

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post #34 of 35 Old 02-04-2016, 12:47 PM Thread Starter
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They are 20mm fork extenders by Traxxion. Yes they are very pricey but very nice. Traxxion gives a small discount to racers and military... Extended Fork Cap for GSXR Showa

There are other brands out there but most are only 15mm. You're best bet is to watch eBay... I've seen a few forks with them mounted for stupid cheap
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post #35 of 35 Old 02-05-2016, 04:57 AM
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It's held up so far already added another 2k miles .

What do you mean by painted pieces?
The only fiber glass part is the tail correct? I have seen so many fiber glass parts (boat parts, car parts, moto parts) freshly painted and looked awesome at first but in short time you could see bubbles in most of them and chips of paint in some cases would come out.

I said what I said just from my experience with fiber glass so far. You may or not experience any of this.

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