100shp bike

[dieselguy86]

Hi Mark, John,

Frame will be custom made, my engine will be 7" diameter and probably ~12-14" long. The hp841 fp assembly is pretty compact, and I think I've worked out a good design for the 90° gearbox that should save some space as well.

Oil tank will only be a gallon at most, I'm good friends with a hydraulic engineer and he's shown me some cool tech for a "reservoir-less" system that the company bought. cyclonehydraulics.com/technology/
I'm hoping to have a top fuel tank of 5 gallons, and the rest of the fuel down low, so the bike should hopefully handle "light".

I'll get all that sorted out later, for now I just want to get this engine materialized and running. Started the design almost 2 years ago, I think it's time I start making real progress on it.

- Joe

[pitciblackscotland]

Jun 26, 2021 23:33:56 GMT -5 dieselguy86 said:

Hi Mark, John,

Frame will be custom made, my engine will be 7" diameter and probably ~12-14" long. The hp841 fp assembly is pretty compact, and I think I've worked out a good design for the 90° gearbox that should save some space as well.

Oil tank will only be a gallon at most, I'm good friends with a hydraulic engineer and he's shown me some cool tech for a "reservoir-less" system that the company bought. cyclonehydraulics.com/technology/
I'm hoping to have a top fuel tank of 5 gallons, and the rest of the fuel down low, so the bike should hopefully handle "light".

I'll get all that sorted out later, for now I just want to get this engine materialized and running. Started the design almost 2 years ago, I think it's time I start making real progress on it.

- Joe

Hi Joe,
Yeah that's a good idea to make a custom frame, i think it will be a lot easy to build There are some nice small size IC engines on the market www.ebay.com.au/itm/252653714777
This might be a good gearbox to use www.ebay.com.au/itm/353013950953

Cheers,
Mark.

[dieselguy86]

Hi Mark,

Yep, I figured build the engine to what it needs to be, then figure out the frame after that and build around it.

My plan is to power the ancillaries off the gas turbine itself. Either off the compressor hex itself, or use an extended shaft with a seperate drive coupling.

This part will probably be the last step in the engine development. First is basic engine to measure the residual energy left and to work out any bugs in the engine. Then install the fp unit to make sure it all works together like I hope.

For 90° gear box I was thinking of using a small diff from the front of an isuzu amigo. Chopping the pinon off the shaft and fixing it right to the output off the fp.
The hp841 has a torque converter, not sure how much slippage there will be, but at 1:1 at 100% n2 the output will be 13,000rpms. I'm setting it up for max rear tire speed of 120mph, so I have some reduction to do.

-Joe

[dieselguy86]

Quick update only because I'm excited. FINALLY ordered an 84mm turbine and ngv, already machined for $350 from a supplier in Turkey. I asked him about making one out of the lightweight material gamma-ti, or titanium aluminide, and he said no problem. 1-4 days to machine. He makes all sorts of turbines, even has a 150mm with removable 30mm blades, 200mm also available.

I'm particularly excited about the gamma ti wheel as it's really light, should improve throttle response in the bike. Since it is more fragile than inco I'll save it for once the engine is sorted. If anyone else is interested in something let me know.

[dieselguy86]

Hi all,

The injector/ water mister nozzle came today. Appears to be very well engineered/ built, and small! 








The belt and pulleys for my fuel pump will be here tomorrow. Pump is a spare 2.5cc/rev hydraulic pump I had laying around. Hope to test spray pattern and flow this week yet. 

-Joe

[dieselguy86]

Hi all, 

I saw these on ebay and got them cheap, thinking they might would make for a quick and easy fuel manifold. My question for the ones that know is, can a manifold be too big? 

It's 1/2" square tubing, 3 1/2" mean diameter, so almost just right for a 7" case. But I'm wondering if having to much volume in the manifold could cause: 
1) throttle issues
2) some sort of boiling effect after shut down



-Joe

[racket]

Hi Joe

I think #2 is a possibility,but then it is with all manifolds .............. #1 shouldn't be an issue if the manifold is full of fuel

Cheers
John

[dieselguy86]

Hi John,

I was thinking most manifolds are somewhat vented with the open needles. My injectors have check valves in them, it won't allow any venting/ draining at all.
Although the pressure relief valve I've ordered is normally open, so once power is cut the valve should allow things to settle.

These are the dumb things I lay in bed and think about.

-Joe

[racket]

Hi Joe

That sounds reasonable :-)

Watching TV is my thinking time , there seems to be nothing but Covid or crap on there at present, easy to switch my attention to something more worthwhile.

Cheers
John

[dieselguy86]

Hey all,

Sadly, no injector testing this weekend 😒
Had everything ordered and cad modeled when I figured out my pump has different mounting dimensions than the brochure drawings I found. Plus my pump has a funky tang drive which is nice for conserving space, but makes it a pain designing up a standalone mount for it.

So I caved and ordered a new pump that will get used for the engine anyways. While I'm waiting for it I drew up a mount, I did it tab/ socket style. No fiddling with things to get it aligned/ spaced right, just insert each piece into its slot, make sure it's square, and go. I'm also going to direct drive it for now. Probably going to ditch the spider couplers and make my own , pump shaft is half inch, brushless motor is 5mm. Nothing available so I can probably knock a cheap solid one out in 30 min.




-Joe

[dieselguy86]

Hi all,

Still waiting on turbine and ngv, I feel as though I may have been scammed  as replies have dried up. We will see. 

In the meantime, I got with my hydraulics guy, ordered a .5gpm normally open, proportional pressure relief solenoid. 


A cheap proportional valve driver ($130us) that I can program min/max, frequency, and ramp up/dn. kar-tech.com/pwm-valve-driver.html
Has 2 inputs, #1 will be a potentiometer for throttle, and im going to see if #2 can be an rpm sensor to trim the max setting to keep max rpms at a set point. Not sure how smart the thing is, at this point it's just a thought. But I can order a programming card that will let me adjust it over wifi, something I think will be useful should something funky happen on the road. 

Fuel system should be pretty simple, a T off the pump output, one side of the T goes to the engine, the other side will have the relief valve with a line to the tank. Should wires be cut or shorted, the valve fails open and the engine shuts down. Max fuel flow to the engine should be ~.3gpm, with a rated .5gpm solenoid it should handle more than the pump will put out. 

Lastly the part I'm most excited about, the oil "tank" I mentioned earlier. 


It's a 1.2 gallon cyclone system that is capable of de-aerating up to 9.6gpm. It's 8.25" x 7.75" square and 14" tall. Should be easy to find a spot for it. It takes a min of 4gpm to create enough velocity to pull the air out. I think 4gpm would be plenty of oil to lube the engine, fp assembly, right angle box, and the ancillary reduction box, so I have more system than I need, but its the smallest they make. 
I don't need all this stuff right away, but with the way the world is right now I figured I'd best order it before I need it. 

-joe

[turboron]

Joe, can you share more details on the cyclone separator? Price, supplier etc.

Thanks, Ron

[dieselguy86]

Hi Ron,

The original company that developed it was cyclone hydraulics, but was then purchased by sun-source within the last year or two. I believe cyclone is still acting as a seperate company, so you could try going through them for one. We deal with sun-source directly because of work, which is how I have access to them.
I haven't gotten the bill yet, I was roughly quoted a couple hundred usd for the 8gpm system, which was good enough for me to order.
The downside to sun-source is its usually a multi- week ordeal getting things. Alot of times 4-6 week lead time.

-Joe

[turboron]

Joe, thanks for the info.

Best, Ron

[dieselguy86]

Hi everyone, 

Turbine and ngv have arrived. After getting scammed for $350, then multiple dead ends in China, I finally ponied up and bought the 85mm setup from jetmax. I am very impressed with the quality, and it came with documentation of the alloy % and xray certified. It was double the price, but I'm glad I went that way. 

The size of it has me second guessing using a 7" case. 

The micro pwm valve driver will be in soon, getting parts has been painfully slow. But atleast now I can calculate the shaft diameter needed and make sure the bearings I have will be sufficient. 

-Joe