Topic: Dunstall fairing/ fiberglass bodywork

[BenelliSEI]

Do they make noise?
They look somewhat like the stock tires that were on my 2009 Ruckus (sold it) and they had a nice hum.

No. They are fine and work well. Low price too.

[Gamma]

Funny you mention that….I have this one for sale on FB marketplace.


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It’s great to see people on here taking on challenges and learning from experience and letting us into the discoveries.  As it happens R/C modelling is my other passion😃

[FrankenFrankenstuff]

First part. Not too bad. Surface solid, some rough spots from the PVA. Will try next with chop mat.


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[Don R]

A boat shop can be a great source if information and material. I made some jr dragster noses back in 92, it was winter and it took a couple nights to realize I needed ventilation. My material came from the Mach III factory.
 A friend needed ballast weight on their car so I sold him my mold finished on both sides. L0L.
 My unrealistic goal is to have the fastest sohc honda at the Maxton mile.

[RAFster122s]

What hardener are you using? 205?
What technique are you using to spread the resin mix? You can get good results from the West Systems, just need to get your technique down and you are gonna need some help ideally to do the big pieces you are working with. One piece Molds need different approach than two piece. Spreading the resin and rolling out the layers as you build up the composite and eliminating any voids or air bubbles is the challenge in one piece molds.
Chop Matt has little strength in large pieces when trying to keep things thin. Alternating layers with bias cuts in your layup and maybe adding carbon tow or some carbon fiber cloth is going to addd some strength. Complex curves are tough on one piece molds. Boat cloth is not going to have the ability to conform to the curves unless it has lots of cuts or it is in lots of pieces.

If you have fiberglass fuselage experience then you know the light weight cloths have move drapablity than a twill or boat cloth. But you cannot build a fairing from 2 ounce cloth or 1/2 ounce cloth. It has its place in your layup but you are going to need a lot of different weights to get a strong light layup with the strength you need for a fairing.

Crows foot weave has superior drapability for complex curves.

Gotta a good friend here in Tucson who is retired Grumman Aircraft Composites guy, did the parts for a lot of aircraft still in service. He is an avid RC sailplane modeler and actively building stuff constantly, making his own molds for lots of stuff. He even does some work for others using their molds from time to time.

Maybe you could chat with him and he could give you some guidance…

David

[MauiK3]

It’s amazing what you find in todays epoxy products. The folks building the so called river tables use these deep pour epoxies that take days to cure but don’t mind being poured over 1” thick.

[Don R]

  I bought a glasstec body for my racecar, it had different proportions than our chassis so I narrowed it from nothing at the nose to - 2 1/2" at the windshield. An NHRA pro stock builder coached me to lay out the glass and then squeegee the resin keeping it as dry as possible. Lay the wetted mat of wet fiberglass where you want it and squeegee any liquid resin into the layers. while it's wet do it again.
 
 My granddaughter made me a sculpture of play dough. I attempted to encase it in gel. It became one giant smoking blob. Apparently play dough doesn't play well with resin.

[FrankenFrankenstuff]

I was using superglue for jewelry making, buffs to a nice shine….had a glob that a cotton rag landed on. Smoking toxic fumes.
Cotton is a cynoacrylate accelerator.
Play doh is an epoxy accelerator.
Ha


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[Don R]

 My experience with brushing the gelcoat on, I believe I rubbed through the release wax with the brush causing a bit of sticking. Then I had to sand and polish the part and the mold. I got the parts I needed made but never got 100% dialed in.   

[FrankenFrankenstuff]

I need to try it out again. Haven’t touched in a couple weeks. Stupid yard work and work work take up all of my time and energy.


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[FrankenFrankenstuff]

Saw this bike at a swap meet…..didn’t buy. You guys will kill me for it. Was $800.


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[Stev-o]

Saw this bike at a swap meet…..didn’t buy. You guys will kill me for it. Was $800.

You're dead to me!

BTW - was the Kawasaki LTD next to it for sale too?  Had one years ago...

[MauiK3]

Nice looking!

[FrankenFrankenstuff]

This is the first set of my experimental glassing. Fit check and mess around for inspiration. I will make a proper set later. (Yes a year has passed since)


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[ofreen]

Time does fly by.  How many hours do you have in it so far?

[FrankenFrankenstuff]

Time does fly by.  How many hours do you have in it so far?

Ha. Not enough. These are the ones pictured early in the thread. Took maybe an hour to layup glass, 15 minutes sanding and a 3 minute primer spray.


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[HondaMan]

I have always wanted one of these fairings. Checked shows and swaps. I am far too cheap to purchase a new set. Picked up a set of well made molds from a boatbuilder. Going to make some up. Any interest/ motivation or advise would be fanfreaking tastic!! Thanks guys!
These are the molds. I also got some seat pan molds for a triumph T140?

This is the goal. (On a cb750F though of course)


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Ah, to have a set of Dunstall's 4-2 pipes! They were the only ones I remember being dyno tested on a 750K that actually increased HP - except for one American version (I think it was Hooker) that had a 4-1 that added a couple HP with the extra-long muffler section. That one was tested on a truck dyno! 'Twas difficult to keep the bike upright on that one, as I remember.

[willbird]

  I bought a glasstec body for my racecar, it had different proportions than our chassis so I narrowed it from nothing at the nose to - 2 1/2" at the windshield. An NHRA pro stock builder coached me to lay out the glass and then squeegee the resin keeping it as dry as possible. Lay the wetted mat of wet fiberglass where you want it and squeegee any liquid resin into the layers. while it's wet do it again.
 
 My granddaughter made me a sculpture of play dough. I attempted to encase it in gel. It became one giant smoking blob. Apparently play dough doesn't play well with resin.

I have somewhere a Crossman CO2 pistol that my dad made grips for in high school shop class from some kind of epoxy putty he said burned the crap out of his hand

[FrankenFrankenstuff]

Here are a bunch of grips I made for a 1911.


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[willbird]

The grips my dad made his intention and he achieved it was to mold the grip to exactly fit his left hand, the curing epoxy putty burned his hand he said.

[BenelliSEI]

Not sure if anyone is interested; my Rickman CR came with a full set of molds. Fairing, front fender, seat and inner rear fender. They are extremely well made, reinforced with plywood bases and strapping. Large and heavy. I have all the parts I need, but if anyone wants to try and build their own, happy to loan.

[HondaMan]

Here are a bunch of grips I made for a 1911.


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You won't believe what those green sparklies do for a LWC. Gorgeous against the aluminum!