10/98 engine

[turbochris]

looks good John. Don't forget the video camera!

[fricke]

Beautiful engine and exellent workmanship John!

//Fredrik

[racket]

Hi Fredrik

Just about ready to spoolup , been making an electric starter for her , got everything setup yesterday afternoon but couldn't get the starter controller to work , thankfully my mate who supplied me with the bits gave me some advice on how to swap leads around to get it working , so hopefully it'll be OK when I try it in a few minutes time .

Cheers
John

[racket]

Hi Fredrik

Yep, got her spinning on the starter , no oil pressure .......................will try full oil pressure testing tomorrow once I mount the battery a bit more securely ..............but looking promising :-)

Cheers
John

[racket]

Hi Fredrik

Well it looks OK .................but it don't work just not enough torque at low rpm to get her spinning past 2,000 rpm even without oil pressure .

Back to the thinking of something else .

Cheers
John

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[Richard OConnell]

are you going to continue working on this project?? It looks so nice I would hate to see you give up

[Johansson]

Aug 23, 2010 19:13:05 GMT -5 racket said:

just not enough torque at low rpm to get her spinning past 2,000 rpm even without oil pressure .

You might try an outrunner instead of an inrunner, much more torque in those engines and practically the same size. Here is a pic of the one I will use as a starter:



This one is rated at 0.8kW and 1460rpm/v so it should be able to spin the shaft. I hope so at least, time will tell...

I keep hitting the update button on this page, really interested in hearing about a successful first start!

[racket]

Hi Richard

Yep, it'll get completed , this is just a minor hiccup , nothing compared to the multiple bearing and rotor failures I had with my FM-1 engine , that was disheartening

Cheers
John

[racket]

Hi Anders

One of the problems with "fatter" motors is they take up a lot of the bellmouth inlet area unless mounted a fair way away from the rotor , the Mamba in its current position created a "throat" around it just on the same size as the comp inducer area .

Bit more research required :-)

Cheers
John

[Richard OConnell]

have you considered air-starting your motor until you can get it running smoothly during its normal runtime? I know it probably wont be what your looking for in the long run, but it can be nice to get away from an annoyance for a while.
Best of Luck, Richard

[fricke]

John,

Get a starter from an old Jap car, remove the gears and reverse the field if you need to. It should have enough power to spin the GT...

I made one for my first working GT with a bendrix type of connector to engage the drive bullet on the shaft. Worked like a charm. But a bit hard on the bettery *lol* I needed to have two of them, one for the engine and one for the starter...

[ernie wrenn]

I used a 24vdc starter off of a VW>>> Works great and gives you 2850 rpm @ 24vdc.

I got tired of guessing RPM on starters so I put a strobe tach on several. They all ranged from 2200 to 3000 rpms @ the output shaft.

Gear starters are a good bit slower, 850/1500.

VW starter, long extension and socket to fit the turbine nut and you are running. Put a spot wield on the socket/extension so the socket does not fall into the engine.

Great machine work....

Back to work on the Hearse.... Hope to fire it this week!!!!?

Ernie
Socom mfg

[racket]

Hi Richard

I've certainly considered impingement , a bit of hard line to the NGV and a bottle of high pressure gas ...................I tried full oxy bottle pressure on my bikes TV84 , it worked a treat ..............will persevere with electrics for another week or until I get thoroughly fed up and fit the hard line :-)

Cheers
John

[racket]

Hi Fredrik

Went and got a geared starter this morning , looks like ~5:1 gearing inside , will be doing some rpm tests on the starter as soon as I can

Cheers
John

[racket]

Hi Guys

A bit of an update ................. the Nippon Denso starter I purchased ( $AU 65) had a 4.44 :1 gear set inside , after "removing" the electric motor with the hacksaw and a bit of turning to "round" things up, along with a new mount and coupling piece I now have a starter with some grunt .

With ~70psi of lube pressure, 5W-40 synthetic oil, and 15 deg C ambiant temps , the new starter will happily spin the 10/98 rotor to ~7,000 rpm in ~2-3 seconds , no load rpm for the starter is 20,000, just about perfect

Cheers
John

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