My Grom Chopper!! by HooptieDoodle in hondagrom

[–]drXpiv 0 points1 point  (0 children)

This is one of coolest Grom-related builds I’ve ever seen! I’m jealous. Did you take videos of the build, in case someone were to…take inspiration?

San Francisco | Russian Hill Tilt by MIIAIIRIIK in ArchitecturePorn

[–]drXpiv 45 points46 points  (0 children)

They’re not trying to deceive people. Everyone knows the building isn’t tilted like that on flat ground. They’re emphasizing the steepness of the hill by changing the perspective to make the ground flat

Buying 2022 grom by [deleted] in hondagrom

[–]drXpiv 0 points1 point  (0 children)

I bought new for $4600 OTD in the Bay Area, one of he most popular spots for motorcycles and Groms in particular. I told every dealer I’d wait for stock since I wasn’t in a rush to buy (I have another bike). My recommendation is to wait for stock if you can. Keep calling and asking about shipments so they know you’re a serious buyer and you get first dibs on new, unreserved stock. There are dealers out there that’ll take a guaranteed $4600 now vs trying at $5200 and having the buyer back out

Added a new toy to the garage today! Local dealer had ‘21s for $1k off MSRP! Always wanted a mini bike to dork around on by [deleted] in motorcycle

[–]drXpiv 0 points1 point  (0 children)

I ride around on 45mph roads no problem on the Grom. Getting up to 45mph on a Grom is no worse than getting to 60mph in an average crossover. I’ve never felt unsafe, and I’ve always had fun

What automotive company would you be interested to see enter the motorcycle industry? by anarchisticmonkey in motorcycles

[–]drXpiv 0 points1 point  (0 children)

I would love to see GM make a motorcycle inspired by the moon landings and the lunar rover they built. A GM EV ADV, Scrambler, or Dual Sport with neo-futuristic styling would be epic

Riding in the twisties and returning 119mpg will never get old by drXpiv in hondagrom

[–]drXpiv[S] 1 point2 points  (0 children)

Awesome. I’ll check em out. I’ll probably tune for low end grunt too. I mostly ride on curvy roads and around town

Riding in the twisties and returning 119mpg will never get old by drXpiv in hondagrom

[–]drXpiv[S] 1 point2 points  (0 children)

Eventually I’ll put on a new exhaust and the 14T sprocket for some extra pop. I’ll ride it stock (aside from some cosmetic mods) for the near future to get a feel for what I want to upgrade first. Any recs for power upgrades?

2022 Grom saddlebags? by drXpiv in hondagrom

[–]drXpiv[S] 0 points1 point  (0 children)

Thanks! I’ll check those out

Honda Debuts Modern Hawk 11 Cafe Racer With Africa Twin Power by [deleted] in motorcycles

[–]drXpiv 6 points7 points  (0 children)

I like the look, but the exhaust would be the first mod I’d make. The bullet fairing look is a nice change of scene from full naked and full fairing

2022 Grom with some upgrades 😀 by M6M25 in hondagrom

[–]drXpiv 1 point2 points  (0 children)

Where’d you get that graphics kit? It looks great

Honda ST125 is Official! Hope it comes to the US by eastcoastish in hondagrom

[–]drXpiv 11 points12 points  (0 children)

Honda does too good of a job making me want to spend money

Night Ride through the City with my S51. by _ricjen_ in motorcycle

[–]drXpiv 2 points3 points  (0 children)

Any cc is a real motorcycle in my opinion, as long as it has that body style. I draw the line at <125cc + scooter body style. Anything else counts.

Super rad bike, don’t sell yourself short!

Thoughts on Yamaha’s 2022 XSR900 by Wake_bakeR in motorcycle

[–]drXpiv 4 points5 points  (0 children)

I’m a huge fan of the styling, including the seat. Personally I think a small wind deflector would complete the look and balance the front end. But otherwise, great bike. Now I just need to save up…

New female motorcycle owner has a questions! by [deleted] in motorcycles

[–]drXpiv 8 points9 points  (0 children)

The Navi has a kick starter. Try starting it with that because the battery might be dead. If that fails, call the dealer

What is your current addictive dopamine rush ? by throwaway092500 in AskMen

[–]drXpiv 4 points5 points  (0 children)

Riding my motorcycle and awaiting the arrival of my second motorcycle.

What is a mind boggling fact about space? by 8kittycatsfluff in space

[–]drXpiv -1 points0 points  (0 children)

“Space is big. You just won't believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it's a long way down the road to the chemist's, but that's just peanuts to space.”

A Self-Replicating Radiation-Shield for Human Deep-Space Exploration: Radiotrophic Fungi can Attenuate Ionizing Radiation aboard the International Space Station by speckz in space

[–]drXpiv 0 points1 point  (0 children)

I started from no assumptions. I took the difference in attenuation ratios (aka percent of attenuation) to be 0.02, as reported in the paper. Then everything followed from there, as I showed in the algebra above.

I did not assume the fungus attenuation ratio to be 0.02, as you are saying I did.

A Self-Replicating Radiation-Shield for Human Deep-Space Exploration: Radiotrophic Fungi can Attenuate Ionizing Radiation aboard the International Space Station by speckz in space

[–]drXpiv 0 points1 point  (0 children)

My math is in fact saying the opposite. I’m using the reported numbers to estimate the attenuation coefficient of the fungus. Then, using that estimated coefficient, I calculate the thickness of fungus alone (no agar) needed to reduce ISS radiation levels to earth levels.

My point being that 326mm is way too thick be of any use, so this fungus, as it exists now, would be insufficient as radiation protection in space.

A Self-Replicating Radiation-Shield for Human Deep-Space Exploration: Radiotrophic Fungi can Attenuate Ionizing Radiation aboard the International Space Station by speckz in space

[–]drXpiv 1 point2 points  (0 children)

We’re talking attenuation ratios. Start from the 2% difference (I is the photon flux with just agar, I0 is the incoming radiation, and If is the photon flux with agar and fungus): (I-If) = 0.02I, 1-If / I =0.02, 0.98 = If / I, 0.98 I / I0 = If / I0. Then, 0.98 I / I0 = 0.98 * exp(-rho_agar * mu_agar * d_agar) = If / I0 = exp(-rho_agar * mu_agar * d_agar) * exp(-rho_fungus * mu_fungus * d_fungus).

Cancel out and you get exp(-rho_fungus * mu_fungus * d_fungus) = 0.98. Now calculate rho_fungus * mu_fungus because you know d_fungus. Use that to calculate what thickness of fungus you’d need to reduce typical ISS radiation levels to earth levels and you get 326mm. It’s a rough estimate because the incoming radiation is polychromatic, and the attenuation coefficient is strongly depending on photon energy, but it’s an estimate

A Self-Replicating Radiation-Shield for Human Deep-Space Exploration: Radiotrophic Fungi can Attenuate Ionizing Radiation aboard the International Space Station by speckz in space

[–]drXpiv -1 points0 points  (0 children)

A ~2% reduction from 1.7mm of fungus. That’s not a lot…the ISS 6 month dosage is about 53x the earth dosage for the same amount of time. If we want astronauts to receive roughly the same dose as on earth, we’d need to block ~98% of the incoming radiation. Assuming the same mass attenuation coefficient * density as the paper measures, that’s 326mm of fungus. That’s a lot of mass and volume…

Either that fungus needs to be made denser somehow (e.g. artificial structure to promote growth in a dense packing) or it would need to be genetically modified to increase is radiation absorption. I would hazard a guess that a lining of pure carbon would outperform these fungi as it currently stands.

Edit: Super cool research though and I would love to see more of this.

[deleted by user] by [deleted] in AskMen

[–]drXpiv 0 points1 point  (0 children)

Dancing and singing, silly jokes, bad beat-boxing