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Post by turboron on May 15, 2016 13:19:07 GMT -5
John, check the website www.full-race.com. They have the BW turbo speed sensors and readout displays, etc. Thanks, Ron |
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Post by turboron on May 15, 2016 13:20:13 GMT -5
John, the tab under www.fullrace.com to look at is EFR turbo accessories. Thanks, Ron |
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Post by racket on May 27, 2016 1:26:30 GMT -5
Hi Guys Finally mounted the starter limit switch so that the starter can't be energised unless fully engaged over the comp nut , and de energised before its fully disengaged   Cheers John |
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Adam
Veteran Member
Joined: May 2016
Posts: 101 
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Post by Adam on May 27, 2016 2:04:40 GMT -5
Wow! I just watched some of your youtube videos, such a wicked engine John.
Adam
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Post by racket on May 27, 2016 3:08:30 GMT -5
Thanks Adam, hopefully I'll be able to get her up to high power settings without excessive temperatures :-)
LOL, I've been busy over the years , I like making engines .
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Post by livingweapon on May 28, 2016 15:32:39 GMT -5
John -
This engine is shaping up to be an old-school brute. Reminds me of the classic low compression turboshaft engines that idle high rev, but make terrific shaft power in the last 10% of the HP rev range - except you're doing as much in 1 centrifugal stage as the old engines did in 7 axial stages. I'm very interested in how she plots revs vs. P2 and temps as you continue ironing out the mechanicals and getting more clean runs. I'm guessing the LP design parameters will be "narrow" compared to most turbocharger based engines, but I have complete faith in your abilities.
Bryan
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Post by racket on May 28, 2016 17:56:58 GMT -5
Hi Bryan
LOL, thanks for the faith , you've probably got more than me at the moment ;-)
I'm just waiting on the delivery of a couple of parts to finish off the mods to the test stand before doing more testing , hopefully in a couple of weeks time I'll some good "numbers"
Cheers
John
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Post by racket on Jun 22, 2016 1:20:17 GMT -5
Hi Guys
Well finally the freepower gearbox has arrived from Italy , only 6 months from when I ordered it , but better late than never , a nice looking shaft mounted alloy unit ready to slip straight on a 40 mm kart axle ;-)
Weighs ~15 Kgs, comes with a 25 mm input shaft .
I haven't been able to do any testing of the 12/118 engine as an old back injury has started playing up and I can't manhandle the test stand onto the trailer , hopefully if I don't aggravate the injury it'll go away in a week or two , it usually does,..... I'm itchin' to get those high power numbers as the mods to the test stand are completed, I've been ready to go for a week.....bummer .
Cheers
John
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greazy
Veteran Member
Joined: December 2015
Posts: 128
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Post by greazy on Jun 22, 2016 4:04:43 GMT -5
hope you get better soon mate. I'm itching to hear about a flat out run!
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Deleted
Joined: January 1970
Posts: 0
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Post by Deleted on Jun 22, 2016 4:52:56 GMT -5
Hi John
Hope the back gets better soon ,cant wait to see the full throttle run
how about some photos of your new gearbox
Cameron and I are looking into a gearbox for FatMumma
re using some pre loved parts into a custom design housing
gonna have to talk to Anders to get some casting tips lol
Get well soon and say hi to Linda
Cheers Chris
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Post by racket on Jun 22, 2016 21:04:57 GMT -5
Hi Chris Pics as requested .    And with 4th stage Allison C30 wheel slipped over the input shaft , just enough clearance for the axle  Not a bad gearbox for $AU 1,100 , can't wait to have a look inside it :-) Cheers John |
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Post by racket on Jun 22, 2016 21:12:55 GMT -5
Hi Chris
Due to the 2 stage reduction in the gearbox , and the rotational direction of the C30 wheel , theres going to be some "imagination" required in the mounting of the gas producer , at this early stage its looking like the gas producer will need to be mounted to the rear of the freepower , overhung behind the axle with the inlet facing backwards ............at least that'll stop stuff getting sucked into the engine .
If this gearbox works out OK then I think its a cheap option , by the time gears are purchased and casting made and machined the costs won't be much different
Cheers
John
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Deleted
Joined: January 1970
Posts: 0
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Post by Deleted on Jun 23, 2016 2:02:39 GMT -5
Hi Chris Due to the 2 stage reduction in the gearbox , and the rotational direction of the C30 wheel , theres going to be some "imagination" required in the mounting of the gas producer , at this early stage its looking like the gas producer will need to be mounted to the rear of the freepower , overhung behind the axle with the inlet facing backwards ............at least that'll stop stuff getting sucked into the engine . If this gearbox works out OK then I think its a cheap option , by the time gears are purchased and casting made and machined the costs won't be much different Cheers John Hi John thanks for the photos certainly looks good ,I also agree that the price is not bad ,I will though 'try' to manufacture the gearbox needed for FM-1 first I will of course follow how it performs for you I was going to mount FM-1 like an east west engine, inline with the axle and just behind the driver do you think there will be any issues with that? Cheers Chris |
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Post by smithy1 on Jun 23, 2016 3:53:50 GMT -5
Love the gearbox John...."Just enough clearance for the axle"...?? Hmmmm...With the nozzle guide vane and exhaust housing around it you may not have much room left at all.
Cheers,
Smithy.
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Post by racket on Jun 23, 2016 4:41:14 GMT -5
Hi Chris
Yep , she's a solid unit , I took the input pinion out this arvo , its supported on a couple of good sized ball races with a 30 tooth helical gear on the end , this meshes into a 39 tooth gear on the intermediate shaft .
I'll be interested to see what sort of gearbox you come up with .
Can't see any problems with an east/west mounting.
Cheers
John
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