ScottsCrazyBuilds Jet Kart

[andym]

I know there has been some words between use, but well done nice to see the engine running.Long days... learning fushion 360... making the fuel injectors.... 50 failed needles Please put the A/B on monentry switch.... big sfaty issue. As for the tanks size, if it last 90 seconds, more than plenty to do 1/4 mile.... dont matter if it goes out over the line. You can beet 116mph with that on quater, and be first to brake 100mph on 1/4 mile

The world record had no set distance

Hope to see it run at pod, but please check that you will not have to adire to the new rules..... I know Elvington .... David will check it over, and want to see manual feul control, was not over happy about last kart, only let it run becuase the lanyard switch killed the engine, and that if the cable snapped the engine would shut down

Again Nice

[slittlewing]

Thanks Andy! 😊 glad you enjoyed seeing it, I can imagine how many hours have gone into it and it’s a real sight to behold running on full song - so you and John should be very proud indeed! Probably be 8 or 10 years of cumulative work from all of us by the time it’s finished but I think/hope it will be stunning.

The AB is currently on momentary, there will be a small period maybe it will be on a toggle for other tests but once it gets the proper ECU it will also be on momentary 👍 I will also then keep the isolator switch and lanyard which will kill all power from battery.

You are right it could do the 1/4 as is, but I would like to set it up for the mile to get the real top speed out of it and makes it easier at 1/4 incase of waiting for people in front or warming up!

Cheers

Scott

[andym]

HI Scott

Yep you going to need a little more fuel for the mile, and like you say some for waiting, not hard to to work out how much used on a run, then only fill to that + 20% to top run

So want to get working on my new engine, oil and fuel tank made, ignition, control system , tools for flame tube to finish.... long list

Have promised my self to run for my 60th birthday

Looking forward to more

[andym]

Hi... I dont know what you plan for bigger fuel tank. Dont know if you knew Laser will weld things for you, they welded the fuel tank for the new engine

[slittlewing]

Hi All,

Some minor tweaks - AB stays have turnbuckles for accurate adjustment to try and avoid preloading engine (did this months back, forgot to mention)

After the last test the AB radiant heat started to melt the ignition wiring so small temporary heatshield now added.







Thanks for the info on the welding Andy, but I will be “repurposing” some sort of old or existing tank and thankfully have some mates who are professional Ali tig welders to do a lovely job when the time comes for modding it.

Cheers

Scott

[slittlewing]

Hi All,

Pics below of recent garage floor renovation.. sealer, levelling compound and two coats epoxy paint means it’s so much nicer to work in there now!
Total materials cost about 300 quid, bargain 😄







Cheers

Scott

[slittlewing]

Hi All!

A little while since my last update but lots has been going on in the garage. I will let the video do the full explanation 😄



Cheers

Scott

[slittlewing]

Here she is…

 Cheers

Scott

[andym]

On your last video

Say what you want Scott, you have been running the engine beyond what it was desinged for, you welded up the back plate which removed its flex, and if needed the tacks would brake..... that the afterburner moves is how they all do, but adding the extra weight on the clearly does not help..... even the one that still holds the record the afterburner flexed....With that cover on have you check the afterburner tube for cracks.......... but the track you ran on was not a safe or suitable place.... But hay what would i know only been doing this for 15 years.... you OH i moved the battery kill..... between your legs, so tell me how do marshalls get to it....

[slittlewing]

Hi All,

New video below 😊 not interested in wasting my time replying to the prior nonsense 😅

Cheers

Scott 

[andym]

Oct 23, 2022 17:05:11 GMT -5 slittlewing said:

Hi All,

New video below 😊 not interested in wasting my time replying to the prior nonsense 😅

Cheers

Scott 

Thats about the leave of contempt I would expect from you Scott. But again Scott its the truth... Or tell me you are not running the engine past its 40 psi designed limt ? 

[slittlewing]

No contempt, just don't have the time to go through every point etc etc.

>95% of that rubbing damage plus the compressor slip all occurred during the shakedown run where I was running the engine at ~2.5bar P2 and certainly always less than 3bar which is the "designed" spec. So its clear the NGV plate is too thin to resist the loads - I suspect it should be 10 or 12mm thick.
Thats also considering the NGV was refaced perfectly flat before, and has been warped into the turbine during that shakedown.

As you know I have done static tests without the AB (dry nozzle only) venturing to 50psi for a few seconds - which should be perfectly acceptable for the KTS wheel and turbine, provided TOT's are OK.

[andym]

Nope, like i said you been running the engine past what its been designed for, and now you are calling the person that told me this a Liar. Any running past designed limits is going to cause adverse effect.... With or with out the afterburner, try it with a Neol Penny, JFS100, and many others.... your not going to have a running engine for long,

OH but am sure you will have some smart explanation.....running past designed limits, is running past limits, nothing to do with turbine or comp wheel.... its past it limits.... I know what I know... as do others.


The state of the track you ran on, would not suprise me if going over some of the pot holes caused the issue, and yes seen its happens, Ask Dan goodwin about it...

You keep whining about how bad the engine desgin is... Lets see your work.... These engines take time to develope... they are a labour of love...
From day one i offered to help and work with you to inprove the engine, but you shut the door on that one...

But carry on Scott i will keep helping other build there first engines, just like i helped you...

Have my own build to worry about now, start making chips soon... so see you on a track next year

[slittlewing]

Nope, a few seconds during static testing previously past 3 bar without AB has not caused this issue. And if the kart can’t survive a bump without massive damage then something isn’t correctly engineered.

It’s clear the NGV is not man enough, Anders engine used 10 or 12mm NGV and I have had messages from others with thin NGV and same problem of warping.

You have provided ZERO help throughout my ownership instead just complaining at every single thing I do and ruining this thread. You refused to speak to me after I first “dared” to mod the AB (which actually made it work) and have then spent 2 years throwing muck on this build thread. So don’t pretend I’m the one that’s “shut the door” 😅 the history is there for everyone to see in the last 10 pages.

Somehow even after enduring all that, I wish you luck with your new engine.

[andym]

Oct 25, 2022 2:33:56 GMT -5 slittlewing said:

Nope, a few seconds during static testing previously past 3 bar without AB has not caused this issue. And if the kart can’t survive a bump without massive damage then something isn’t correctly engineered.

It’s clear the NGV is not man enough, Anders engine used 10 or 12mm NGV and I have had messages from others with thin NGV and same problem of warping.

You have provided ZERO help throughout my ownership instead just complaining at every single thing I do and ruining this thread. You refused to speak to me after I first “dared” to mod the AB (which actually made it work) and have then spent 2 years throwing muck on this build thread. So don’t pretend I’m the one that’s “shut the door” 😅 the history is there for everyone to see in the last 10 pages.

Somehow even after enduring all that, I wish you luck with your new engine.

From day one you have done what you wanted..... your claim the afterburner did not or would not work.... when it had not ever been tested... yet its design is the same as the one that set the record..... the video in, with a brief few firing was cut short, so had no chance to set thing up........ but Oh... you know better . Yes the history is there, all the video of my afterburner running on other projects, but from one failed test.... in your mind it did not work..... So who shut the door, how can you work with someone that is so arrogant, video of my working design is there for every one to see, for those that have not seen it, same design as the one Scott says did not work..... and before Richard starts up about what hes done for the DIY GASTURBINE group... what has he done, does he host two face book pages to promote the hobby.... did he get us in to Santa Pod, get Tom his TV break, that led to the Guinness world record ? Am quite sure Richard will be bitching about me, Harry, Aid, Andy P.... or many of the UK jet guys.... thats just how he is, nice as pie to your face , but bitch about you behind your back.... Have been there when hes done it, well me and Myra

Please tell me every one who sees a none working afterburner, please... because Scott clearly does, the same design Scott



Perhaps an earlier afterburner



Or even this one





Clearly Scott the truth is what you want it to be, you have been economical with the truth.... you still have not shared the two failed starts from you first attempt to start the engine.... Only after being questioned do you mention you have run the engine past designed limits... The loading on the case, back wall if only for a few seconds could pull or move ... even bend things 

complaining.... Nope defending my name, you bitch and bitch about the design....I have even had to put up with name calling. Tell you what i will buy it back from you.... you build your own, am sure it will all be good from the start. Look at the work John has done to get his engine working. who would of thought only running the engine up to its hoped limits, the comp wheel bore would strech....  If the ngv is so bad replace it, draw a new one up, find a cnc compay... etc.. things I would of, could of done... if that was needed

So ok, here is some advice, you have raised the rear of the Kart putting 6" rims on, pushing the wieght on front wheels, the posible out come of this, a spin at speed, not my words, but a friend that runs super karts 

You remove the flex from the stays to the afterburner.... good chance you will either punch a hole in the afterburner, rip etc... like I have said not been an issue.... but the karts not built to run on pot hole filled track..... The cover you have put on the back... erm why, keep heat in ? WTF.... lol... looks good, the engineering gone it to it looks wonderful.... but why, you added weight ? more loading, if only a few Lbs... its more loading... but again, what would I know 

I do have to thank you tought Scott..... you have been part of my motivation to get this new engine on the track early next year