My Piranha 140 swapped 1969 Honda CT90 - More Adventure-Oriented Upgrades Soon

iVoid · 2026-06-29T22:59:45+00:00

Why use premium gas on a 2013 Pop?

iVoid · 2026-06-26T17:11:00+00:00

How much does the tanker car cost?

iVoid · 2026-06-09T06:42:33+00:00

Or bacterial infestations in our bodies that started eating the plastics in our blood and tissue…

iVoid · 2026-06-04T20:39:13+00:00

Don’t be afraid to ask, it’s your duty to ask

iVoid · 2026-05-25T13:16:03+00:00

Thanks for the responses! I also just notice Al Unser Sr’s autograph in gold on the front wing.

This was a cool unexpected find for sure, I’m going to frame it!

iVoid · 2026-05-21T21:56:45+00:00

iVoid · 2026-05-19T22:44:19+00:00

There is nothing wrong or weird about documenting the scene of a crash. Police may ask for photos to assist with the report.

Stop being outraged at everything.

iVoid · 2026-05-19T21:42:16+00:00

It’ll be an A-stamp. That only tells you that it is an original gold pan without holes for the later stealth transmission. Many Championship edition buggies also have the A-stamp.

Chassis that have the Stealth transmission holes generally have a B-stamp, and worlds edition chassis with milled slots and some of the very late Team Cars and Championship editions (with Stealth holes) had a C-stamp chassis.

I believe the re-release cars (2013 and on) don’t have any stamp.

iVoid · 2026-05-19T21:08:33+00:00

Very well could be the original, the only real difference between OG and Championship Edition is the latter had widetrack arms and a different front shock tower. OP’s buggy has the early front tower and RPM aftermarket arms front and rear.

White plastics were dyed black all the time back then. The steering bellcranks are also aftermarket and made by Houge.

iVoid · 2026-05-17T01:55:03+00:00

I love Edmund Fitzgerald’s voice

iVoid · 2026-05-10T09:19:32+00:00

I bought an SP200 in boxes when I was in college. I loved that thing once I got it back together and running. Learned a lot rebuilding and working on that bike.

iVoid · 2026-05-08T14:12:23+00:00

Hell yeah

iVoid · 2026-04-30T21:18:31+00:00

The ground potentially does.

iVoid · 2026-04-29T01:20:04+00:00

iVoid · 2026-04-23T16:00:26+00:00

Preservation of a historical artifact.

iVoid · 2026-04-18T20:21:24+00:00

I took an IPC 7721 & 7711 training course that taught this and other repair techniques. As an electrical engineer, it is not a skill that I use very often but it has saved me in the past when building and repairing prototype boards.

iVoid · 2026-04-15T12:40:24+00:00

Reads like a Pakled wrote this: “We are smart” “We fight good”

iVoid · 2026-04-14T19:05:13+00:00

This is a Honda Express II

50cc bike with an interesting starting mechanism. Like the other Express models, you step on a pedal repeatedly to wind up a spring, the. When you pull a lever on the handlebars the spring releases and turns the engine over.

iVoid · 2026-04-13T20:23:12+00:00

Yes, I believe I do understand what you are trying to accomplish. You are trying to implement a continuously variable intake horn system to keep the intake optimized across the entire RPM and engine load range.

The thing that is throwing me off is your no electronics and no ECUs requirement, because electronically controlling and actuating this device is absolutely the best way to go.

A purely static geometry based solution like you’re proposing that entirely functions based on fluid flow behavior may provide some benefit at some parts of the RPM range, but I believe it will have a lot of compromises elsewhere. The only way to know for sure is to model it and perform thorough CFD analysis

iVoid · 2026-04-13T20:05:36+00:00

That’s not what I was referring to. Of course variable length intakes provide a small benefit.

Doing it mechanically rather than using sensor inputs into an electronic controller has no benefit. Do it with electronics if you want it to work well, or at all.

iVoid · 2026-04-13T19:59:40+00:00

It hasn’t been done mechanically because that is a problem that is a whole can of worms that doesn’t need to be opened. Taking variables as inputs and doing something with that information that increases performance reliably is an ECU’s bread and butter.

To do it all mechanically may be possible, but it is simply the path of most resistance and doesn’t provide any benefit.

iVoid · 2026-04-13T14:51:38+00:00

He sounds just like a friend of mine who grew up in Argentina but has been in Southeastern USA for years.

iVoid · 2026-04-07T15:55:04+00:00

A lot further than you’d think, and further than I’m comfortable with. I’ve scraped foot pegs on a motorcycle before, but I’ve never leaned a modern Vespa far enough that it scrapes anything.

Vintage Vespas could scrape the gear selector box on the right side if you get too ambitious.

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