Top end backwards

[Amwicr]

Here's a 100% theoretical, not-gonna-ever-try/asking-for-a-friend, thought...

What If I flipped the head and piston of a yd100 backwards? so that the exhaust goes to the back with the carb facing forward. I do know it's been done, but not with a yd100. I'll try to find that thread.

let the discussion begin...if it gets any support, I'll do it, and report back. I will never ever try this, ever, at all under any circumstances, in case it might be considered an act of sub-par intelligence.

 

[Amwicr]

Ok I found the build where it was done

Here:

The Backwards Engine Experiment, 1939 Colson

here's a before and after of my bike. just finished it today, and it rides super friggen awesome. the build-up process is detailed here: http://motorbicycling.com/f38/rustoration-build-off-13144.html yeah, the motor's on backwards. that's part of the reason i'm making a new thread here...

motorbicycling.com

 

[GW's Motorized]

You would have to match the transfers to the case, but in theory it would work. The main issue with that is the exaust is the hotter side which is a main reason it faces the side the wind comes to when riding.

 

[Amwicr]

You would have to match the transfers to the case, but in theory it would work. The main issue with that is the exaust is the hotter side which is a main reason it faces the side the wind comes to when riding.

interesting. I still might try it just to have a wierd bike.

 

[DAMIEN1307]

Here's a 100% theoretical, not-gonna-ever-try/asking-for-a-friend, thought...

if it gets any support, I'll do it, and report back.

Well the first line of all that just got blown to hell with the last line...lol...lol.

 

[Amwicr]

Well the first line of all that just got blown to hell with the last line...lol...lol.

Well it was kept theoretical until nobody said it was a stupid idea, you know?...lol

 

[Amwicr]

Well the first line of all that just got blown to hell with the last line...lol...lol.

Not to worry, that post has now been repaired

 

[DAMIEN1307]

Well it was kept theoretical until nobody said it was a stupid idea, you know?...lol

OH, I get it, Kinda like this guy...lol.

 

[ImpulseRocket]

The previously mentioned hot side facing the cold wind is the biggest reason.

Smaller reasons also include... The entire intake and carburetor are shielded from debris and excessive dust being kicked up by the front tire. Having the head pipe right under the seat near your legs and also shielded from the wind of the bike in motion makes for a very very toasty experience.

That second one is often fought with on some motorcycles too, especially V twin and V4 bikes like my VFR1200. Honda put a lot of work into keeping the heat from the rear pipes under control, but you can still tell there are a couple of hot pipes under your crotch and backside. Ducati bikes, especially their new V4 bikes, are notorious for roasting your nuts on an open fire.

 

[DAMIEN1307]

Ducati bikes, especially their new V4 bikes, are notorious for roasting your nuts on an open fire.

YEP...lol...And we are getting close once again to that time of year...lol...Nat Knig Cole knew all about those chestnuts being roasted...lol.