Two Enthusiasts Podcast #35 – No Brainer

10/11/2016 @ 5:08 am, by Jensen Beeler21 COMMENTS


Episode 35 of the Two Enthusiasts Podcast comes to us right after my trip to Los Angeles for the Arai Helmets press launch for the Quantum-X and Signet-X helmets. The show covers these new helmets, as well as what it’s like to ride the Piaggio MP3 500 – a three-wheeled leaning scooter. Spoiler alert, it’s pretty fun.

The conversation about helmets eventually evolves into a discussion about helmet design and construction, how the business side of this part of the industry works, and what the future holds for helmet designs.

There’s a fair bit of debunking going on in this part of the show, with helmets being a subject where conjecture and bad information exist in too large of quantity.

The show ends with a listener question from the folks at Rizoma, who was about air injection for emissions controls. This leads into a pretty lengthy conversation about how motorcycle control the gases they emit, and also how valve timing affects how motorcycle make power and handle emissions.

As always, you can listen to the show via the embedded SoundCloud player, after the jump, or you can find the show on iTunes (please leave a review) or this RSS feed. Be sure to follow us on Facebook and Twitter as well. Enjoy the show!

Source: SoundCloud

  • Innis O’Rourke

    RE: What sport bikes can victor/ Indian make. Victory should make the 156 a real bike- make it a a competitor for the supernakes. I would love to see a well done 156 take on a superduke

  • J Boy

    This is a great episode. I’ve always wondered about helmet safety. Although for me, it’s the flood of really cheap full face helmets retailing at $20 to $30 each. Another issue is the odd market of novelty helmets which are legal in some states. As for Victory brand, I do feel they are positioned to build a full-fairing bike with a radiator. Maybe in the same space as Honda’s CBR or maybe something like the HD VR1000 in design.

  • Glad you liked the show! Q and I were talking, and we’ll probably dive into safety gear more fully on another episode. This one should whet that appetite, until then.

  • coreyvwc

    I really hope Polaris isn’t foolish enough to try doing the fully faired American Sportbike. All they need is something lightweight, sporty, and simple. I would love to buy a cool motorcycle from an American company!

  • ‘Mike Smith

    Imagine the Octane motor in a nearly SV650 sized frame. Drool.

  • gabejudah

    When I picture cruiser manufacturers going after the streetbike market, I always think of the Yamaha MT-01. That’s the sexiest bike I’ve ever seen (I’m probably in the minority). Victory could make a bike like that.

  • coreyvwc

    Hopefully with some better brakes and suspension than the ole’ SV650 had. haha

  • Dustin Nisbet-Jones

    The helmet discussion was very interesting and informative. Good listening.

    Since you brought up advertising: Have you put any thought into taking listener contributions directly?

  • We have. I’m not one to ask for a handout though, so it’s figuring out what sort of value we can add for those listeners who wish to support the show.

    I’m open to suggestions.

  • CBR Sean

    First off, great episode. I didn’t expect to find this one too much appealing, however, as always very well executed and a lot of great information. However, I have a question and a comment.

    First, the question is, since manufacturers will typically use the same composite manufacturers, then what exactly does Made in Japan mean or Made in China? With the AGV helmets, their lower end helmets all say Made in China, however their more expensive and I guess higher end helmets (design or the ones that say Rossi) they say made in Italy. What really is the difference here?

    The note that was not mentioned involves valve overlap. Valve overlap is used to bleed off compression as well as other things. This will allow an engine to utilize a higher static compression ratio, and maintain a useful dynamic compression ratio when you specify the fuel type. So, this is how my engine was built, we utilized a similar compression ratio that a race team would use, but used a different camshaft design, to bleed off the compression in order to ensure the engine was safe to operate on pump gas 93.

    Lastly, the PAIR system used in the Japanese bikes is exactly what Q was referencing when speaking about Ducati. It works the exact same way, injecting clean air into the exhaust. Now, why remove the system? Strictly for tuning purposes. When you put your motorcycle on the dyno to get tuned, the PAIR system will throw the Air to Fuel Ratio reading off, causing the tuner to want to add more fuel to compensate for the added air. You will obtain your reading from the exhaust gases and that clean air throws the AF/R off by generally a few points. When tuning a sport bike, most tuners will shoot for 13.0:1 and 13.4:1 depending on use and what the bike wants.

    Also, I laughed at how hard you both avoided using the words Ducati and I don’t think MotoCyzc was mentioned so good on you both.

  • CBR Sean

    I wouldn’t mind tossing a few dollars for a longer show. I find these very entertaining and hate when it ends. It’s like watching a Netflix series and reaching the end. You just sit and wait until a new one comes in and then you repeat the process.

  • Barry Rothwell Taylor

    Sorry we missed out last week , thank goodness it’s here this week , it’s made having the flu more tolerable – though I may have zoned out a couple of times …
    First full-face helmet Bell Star , back in the mid ’70’s – simpler times .

  • Innis O’Rourke

    I support a few podcasts/ youtube chanels via Patreon

  • Alam R

    Enjoyed the podcast and Q’s insight and knowledge was great as a always. Good job on actively trying not talk Ducati.

    Not sure I agree that helmet tech’ hasn’t moved on in 20 years as was suggested. I can’t believe that the shell tech’, the materials, the aero, the other components haven’t moved on… I don’t really support that. In fact perhaps a podcast interview from Arai or another manufacturer or better yet an independent is required?

  • Travis Zilch

    I think the 20 years ago comments were more around the safety aspect of a helmet, specifically those designed to manage an impact with the object. It’s still a shell with a foam (EPS) liner. Shell materials have changed over the years with the introduction of different composites, and some manufacturers use different densities in their EPS liner to slow the head down more gradually, but really aside from 6D and the Bell Race Star line using the elastomers between the 2 layers of EPS, no one is really pushing design to offer better protection…or least they’re not marketing it if they are.

    It seems most of the design has gone into better visor mechanisms, more aerodymanic, composite shells, etc. IE the features.

    One point of contention I would have on the helmet discussion in this podcast is helmet weight: One of the guys mentioned that head injuries are inversely proportional to helmet weight (lighter helmet = more likely receive a head injury) and went on to say that’s its because the EPS liners have been shaved to create a smaller outer-shell which equals a lighter helmet. In casual Googling, I haven’t been able to locate stats as it relates to this subject. With that said, Snell test standards generally result in a heavier helmet when compared to an ECE certified helmet. Are we to assume that a Snell helmet is safer? Do the stats that you reference only compare head injuries on full face helmets, or could they be comparing say a full face vs. a half helmet?

  • Look at the results and weights listed on the UK’s SHARP website.

  • Travis Zilch

    I wish the Sharp website had a way to download the database and look at weight vs. safety rating from a statistical point of view to see if there is a correlation. At a quick glance there’s some light helmets that score well and others poorly, same for the heavier ones. Additionally, it looks like the helmets tested are built to ECE standard. I wonder how Snell certified version of the same model helmet would fair in the same tests as they’re generally heavier.

    All of this just goes to show me that figuring out which helmets offer better safety is challenging at best, and the Sharp data isn’t as transparent as it needs to be for data focused users. Perhaps as we learn more about brain injuries and how to prevent them (thanks NFL!) we can figure out how to better protect our heads and either develop new standards and/or technology.

  • Dustin Nisbet-Jones

    I think the existing platform and the quality of the content is worth a contribution. My only request would be to allow me to contribute what I want, when I want.

  • And that’s my #1 gripe with motorcycle helmets. We have poor resources to make decisions about safety. Everything is anecdotal, especially what’s coming from the manufacturers…

    I wonder why that is?

  • We always shoot for about 60 minutes, and try not to go over 90 minutes. It’s not a lack of content. More a lack of time. For every hour of the show, it’s roughly three hours in the editing bay.

  • Travis Zilch

    Lawyers ;-)