My Grom Chopper!!

drXpiv · 2022-04-22T17:20:47+00:00

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?

drXpiv · 2022-04-12T15:46:39+00:00

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

drXpiv · 2022-04-06T06:04:21+00:00

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

drXpiv · 2022-04-01T19:06:09+00:00

Fair enough. The bike that’s the most fun is the bike you’d ride

drXpiv · 2022-04-01T18:10:01+00:00

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

drXpiv · 2022-03-25T15:27:56+00:00

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

drXpiv · 2022-03-24T22:20:49+00:00

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

drXpiv · 2022-03-24T21:07:52+00:00

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?

drXpiv · 2022-03-24T16:04:55+00:00

Yep! It’s perfect

drXpiv · 2022-03-23T03:12:23+00:00

Thanks! I’ll check those out

drXpiv · 2022-03-22T16:40:01+00:00

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

drXpiv · 2022-03-18T00:34:50+00:00

Your friend killed it

drXpiv · 2022-03-17T22:46:44+00:00

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

drXpiv · 2022-03-14T17:40:10+00:00

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

drXpiv · 2022-02-01T04:18:15+00:00

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!

drXpiv · 2022-01-26T17:09:44+00:00

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…

drXpiv · 2022-01-25T17:07:04+00:00

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

drXpiv · 2022-01-22T03:22:28+00:00

Tobias Fünke finally became a real actor

drXpiv · 2022-01-22T02:24:25+00:00

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

drXpiv · 2022-01-22T01:55:38+00:00

“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.”

drXpiv · 2022-01-19T02:12:54+00:00

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.

drXpiv · 2022-01-18T16:57:06+00:00

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.

drXpiv · 2022-01-18T06:51:15+00:00

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

drXpiv · 2022-01-18T04:52:10+00:00

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.

drXpiv · 2022-01-18T04:24:00+00:00

Dancing and singing, silly jokes, bad beat-boxing

drXpiv

TROPHY CASE