Forced induction 100cc

**speedpro** · 31st January 2013, 21:49

Come on Neil. You know you want to build another one, or two.

**Flettner** · 31st January 2013, 21:56

E90 fuel allowed?

**husaberg** · 31st January 2013, 21:57

Originally Posted by Flettner

E90 fuel allowed?

nope..........

Originally Posted by husaberg

http://www.gull.co.nz/fuel-products/
http://www.gull.co.nz/assets/Uploads/Gull-Force-10.pdf
its not an additive, because that is how it is sold from the pump.
i agree with the relevance in regards to F4 and F5 but the fuel regs missed them. big surprise which is also ironic.
http://www.mnz.co.nz/regulations/rules/general-rules
F4 and F5 must conform to 10.17.1 which is the AVgas or FIM unleaded.
As Ethanol is not listed ad being a component of the FIM unleaded Fuel even though the rest of the ingredients are fine.

So Greg you Are right the FIM fuel Fuel that covers F4 and F5 plus the other classes not listed under 10-17.2 and 10.17.3 .................

**Ocean1** · 1st February 2013, 07:11

Originally Posted by Sketchy_Racer

Still nothing, It just doesn't want to work. I installed a oil pump to make sure that the oil supply was correct, it worked very well. I also measured that all rollers were getting even contact which they seemed to be (as best as I could test them) The outer ring seemed to have a reasonable amount of pre-tension on it, But here's the intersting part,

It makes 1 psi of boost at idle which sounds like it should make heaps once RPM comes up, but as soon and I mean as soon as the rpm rises the pressure drops and so does the flow to a point where it is really noticeable. So the only thing that can be happening is that the outer ring is expanding and creating slip.

Still got a couple more ideas, otherwise I am going to go down a different style but more on that later.

You'd be getting those symptoms if the drive was slipping badly, but you'd also be getting them if it was simply under-geared. Any way you can get a digital tacho onto the impeller.

**Flettner** · 1st February 2013, 10:31

Glad to see " the munter " is still alive and well in NZ motor cycling:

Change the rules to allow E85 ( that will do ) and I'm in!!

**Flettner** · 1st February 2013, 12:54

Or perhaps I'll just haul out the Uniflow and remake that?? ( speaking of munters ).

**Yow Ling** · 1st February 2013, 17:56

Originally Posted by Flettner

Or perhaps I'll just haul out the Uniflow and remake that?? ( speaking of munters ).

Seeing as that is one of the pinnacles of NZ bucket racing development , could you post a bit about it, even a few black and white pics would be cool
thanks

**koba** · 1st February 2013, 18:03

Originally Posted by Flettner

Or perhaps I'll just haul out the Uniflow and remake that?? ( speaking of munters ).

I'm with Yow, I've heard about that and want to know more!

**speedpro** · 1st February 2013, 19:11

It's really boring and not that clever. I remember being reasonably bored with the whole uniflow thing.

**Kornholio** · 1st February 2013, 19:35

Originally Posted by speedpro

It's really boring and not that clever. I remember being reasonably bored with the whole uniflow thing.

One man's boredom is another man's jizzfest....

**Sketchy_Racer** · 1st February 2013, 19:45

Show me Uniflow! What is it and how does it work?

I'll hopefully have some more news from tomorrows tests to see if the supercharger works. If it doesn't i'm going to design version 2!

**Yow Ling** · 1st February 2013, 20:08

Originally Posted by Sketchy_Racer

Show me Uniflow! What is it and how does it work?

I'll hopefully have some more news from tomorrows tests to see if the supercharger works. If it doesn't i'm going to design version 2!

its kinda like this but smaller
http://www.oldengine.org/members/die...terTS3/TS3.htm

**speedpro** · 1st February 2013, 20:20

I remember brushcutter conrods were bigger sellers than usual one year. I presume that 100cc uniflow is still lying on the shelf covered in dust and dirt. Do you still have the 500cc one as well? I know you are too modest to do it but a new thread with a few pics of the stuff you've built including the microlight and autogyro stuff would be plenty interesting to lots on here. Many are interested in the engineering side of things.

**Flettner** · 1st February 2013, 20:21

I need to read through the forum and see what happened to the roots style supercharger? Why sketchy are you using a centrifugal super charger now, what have I missed?
Well the uniflow is boring now, sitting under the bench, in bits. Best place for it.
For those that are interested I'll see if I can find some pictures of it. Pre digital, pictures cost money so there wasn't many. Here is a video of the next version in a jet boat, still uniflow scavanged Unfortunately you have to wait until the end to see the engine go best. http://www.youtube.com/watch?v=uiXsP...9On_IfKGD31hGA
http://www.youtube.com/watch?v=uiXsP...9On_IfKGD31hGA