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Old 09-22-2011, 07:54 AM   #2656
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Yes, no magics.

Low power mode2 with fdr around 6, it could works

Regards.
m.
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Old 09-22-2011, 08:45 AM   #2657
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No it doesn't. The motors blew up and the speedo kept desoldering itself.
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Old 09-22-2011, 11:54 AM   #2658
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It kind of works, but there is no point as the newer ways are much better.

I tested it last year a few times with a 8 turn delta running sensorless and 6.0 gearing. The feel was nice, but it wasn't as fast as a 4.5 with timing around 10. You can smell the heat in the motor as well!! So I wouldn't recommend it either.
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Old 09-22-2011, 04:55 PM   #2659
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Maybe Marc should read Martin's readme
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Old 09-23-2011, 12:04 AM   #2660
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Quote:
Originally Posted by MattW View Post
It kind of works, but there is no point as the newer ways are much better.

I tested it last year a few times with a 8 turn delta running sensorless and 6.0 gearing. The feel was nice, but it wasn't as fast as a 4.5 with timing around 10. You can smell the heat in the motor as well!! So I wouldn't recommend it either.
you use timing with a 4.5 motor ?
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Old 09-23-2011, 12:22 AM   #2661
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Quote:
Originally Posted by M.Abramowicz View Post
Maybe Marc should read Martin's readme
He knows it. But the track was super super tiny. I not used any timing with a 5.5 aswell. Just pointless.

Quote:
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you use timing with a 4.5 motor ?
On UK tracks yes. You need timing. The straights are HUGE!
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Old 09-23-2011, 12:28 AM   #2662
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Quote:
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He knows it. But the track was super super tiny. I not used any timing with a 5.5 aswell. Just pointless.



On UK tracks yes. You need timing. The straights are HUGE!
just use a 3.5 or 4.0
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Old 09-23-2011, 12:54 AM   #2663
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No.

It's far more unefficient and I guarantee, you will not be able to finish a run with a 3.5T motor. Unless you are going slower than you did with the 4.5!

It's the same reason why the new BMW M5 uses a V8 biturbo instead of the mighty V10. Simply because it's a far better way to achieve proper performance.

A 4.5 will be fast enough. And it won't cause any major heat problems.
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Old 09-23-2011, 02:47 AM   #2664
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Most people were running 4/4.5 (7/8/9 delta) maximum for this year in modified here in the UK, Martin knows how long our straights are
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Old 09-23-2011, 12:21 PM   #2665
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Martin did you get to see halifax and mendip.....those are proper uk straights
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Old 09-24-2011, 07:10 AM   #2666
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Yes I have run 4.5 all year on every UK national track, and actually on the same gear ratio all year as well - just adjust the amount of timing. I used none at the smallest track of the year, and up to 12 on the bigger tracks.
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Old 09-24-2011, 07:18 AM   #2667
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Can you give me the constant gear ratio you use with 4.5t motor and timing ?
You use only 'fixed timing' ?

Thanx a lot.
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Old 09-24-2011, 09:54 AM   #2668
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Looking to do a little 2WD buggy racing soon and i was hoping to use my spare GM75

Can it be used with a 7.5 Turn mod motor, I know it doesnt say so on the instructions but thought i might have seen something regarding one of the mod boys running a 75??
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Old 09-25-2011, 10:53 AM   #2669
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kerb, I've run 7.33 ratio all year. Fixed timing has ranged from 0 for small track, and 12 for big track. Max timing 1 point higher.
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Old 09-25-2011, 11:12 AM   #2670
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Quote:
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kerb, I've run 7.33 ratio all year. Fixed timing has ranged from 0 for small track, and 12 for big track. Max timing 1 point higher.
Thanx matt.
You don't have any other heat problem with this ratio ? I reach more the 120 degres on my esc with no timing and 7.5 ratio....

Is it possible to have the files of your setup by mail ?
My email : forumgratte(at)sfr.fr

Thanx !
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