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Round 8 - Manx Rally - Part 1


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#21 Ember

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Posted 08 August 2012 - 08:42 PM

Ooh. I like predictable. And thanks for weighing it. I didn't actually take any notice of where it finished up on the weight scale.
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#22 slotcarmann

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Posted 08 August 2012 - 10:01 PM

Well, I was curious as to what the cars weighed, as some felt really heavy and I was interested to see if weight might have any noticeable bearing on performance, given we were all using RX-81's.

When I did weigh them at the end, after I had completed all the running of them, some that I thought were heavy weren't and some were far heavier than I thought. Shows how much I know, just by holding them!

Not many of the heavy cars featured in the top dozen, though, excluding Alexis' Skoda and Jimmi's Lancer, but weight alone does not seem to be a decisive factor, the handling seems to be more critical.

However, I have also noticed a huge differential in power across the cars, given we are all using the same motor, with the top 11 cars displaying a good combination of speed and handling. Some of the lower cars were quite quick in a straight line, but handling wasn't so clever.

Still, that was only the initial shakedown without doing any preparation to the cars - and the tracks on which the stages will be run are more difficult, so all is still to play for...!

Cheers
Dave

Edited by slotcarmann, 08 August 2012 - 10:02 PM.


#23 snurfen

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Posted 08 August 2012 - 10:03 PM

View Postmiveson, on 08 August 2012 - 08:37 PM, said:

Must put my car on a diet - I didn't realise it was so heavy (urgh SCXProxy car is to heavy, OzRally car was to light) :)

Need to call next years car "Goldilocks" then mate.

How do these cars become high mag? Didn't think there wouldn't be that much variation in the motors, even though some rev a good 30-40% higher than others.

**EDIT** Sorry Dave, missed the content of your post due to timing. Glad we agree though!

Edited by snurfen, 08 August 2012 - 10:05 PM.

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#24 slotcarmann

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Posted 08 August 2012 - 10:14 PM

Hi Martyn

I did the screwdriver on the motor test for magnetism, not absolutely accurate due to some motors having part of the chassis cage underneath them and some being exposed, so it's only a general guide. I've had cracking motors with brilliant magnets out of the box, and some that wouldn't pull the skin off a rice pudding, so it's a bit pot luck, to be honest!

I hope to get my motor tester working, out of idle curiosity, as there are significant differences, as I have said earlier, in speeds. If I do manage it, I will post my findings on here.

Cheers
Dave

#25 Ember

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Posted 08 August 2012 - 10:27 PM

I'd be really curious to see some stats on the motors if at all possible.

I know mine was just pot luck as it came in the car from Pendles. It was a car that was purchased as a cheap back up plan for my OzRally entry (which was also the cheapest rally car on offer at the time). I was rather happy to find that it was eligible for this and didn't get any 'running in' other than a bit of work when trying to get the gears bedded.
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#26 alexis in greece

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Posted 08 August 2012 - 10:29 PM

Thanks Dave for the test run and feedback,i liked the quick/predictable comment.

View Postslotcarmann, on 08 August 2012 - 10:01 PM, said:

Not many of the heavy cars featured in the top dozen, though, excluding Alexis' Skoda and Jimmi's Lancer, but weight alone does not seem to be a decisive factor, the handling seems to be more critical.
Does this mean my car and Jimmie's were among the top dozen?And by strong magnet you mean strong motor magnetic field?I knew SCX motor vary in performance but magnetic field varance is new to me.Thats one more parameter to check next time i select a motor.
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#27 snurfen

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Posted 08 August 2012 - 10:30 PM

Embs - how much do they charge for sending to you guys in Oz?? (Made my first visit to their shop last Sunday - like Alladin's cave! The Mrs even treated me to two cars, bless her).

Dave, have you bought one (tachometer) or are you making one? I saw a project to make one recently - it's gone on the list of "Things to do", item 98!

EDIT** It was news to me too Alexis.

Edited by snurfen, 08 August 2012 - 10:31 PM.

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#28 Ember

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Posted 08 August 2012 - 10:57 PM

Sorry Snurfy. Never really take that much notice of postage Y'know how it is. You want it, you wear it. No point in trying to argue.

BTW: You're going to have to tell me the story of the eye-patch and bandage. Very Pudsey Bear, except more sad. ;) Did you go to flick something off your glasses when you weren't actually wearing them?
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#29 snurfen

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Posted 08 August 2012 - 11:04 PM

Nah, when you give blood these days, instead of a little ball of cotton wall and 2 inches of micropore, they do you up so you look like a self harmer. I thought I'd just Pudsey up for an hour to get the gimps talking about it.

I'll be doing the screwdriver test tonight now Dave, just out of curio (must have a gauss meter somewhere in work, I'll have to go raid te calibration lab later).
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#30 slotcarmann

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Posted 08 August 2012 - 11:06 PM

Martyn - I have a small DS pocket checker for motors, that covers the rpm and gauss (magnetic) readings. The rpm side is a bit temperamental, but I should be able to do the gauss readings.

Alexis - yes, you (6th) and Jimmi (3rd) were in the top 12 as shown in the table relating to the test stage. And yes, I was referring to the magnetic strength of the motors' magnets.

Lynne - like you, for my Lancer all I did was run in the motor and gears for a while, after it had competed in Slot Rally GB a couple of times in 2011. In fact, I brought it out of retirement for this event, and didn't even run it on any track afterwards, to test it: it was basically set up on very general settings, to hopefully run OK on most tracks, which in fact it has done to date, bar one 25th place.

Cheers
Dave



#31 Ben_M

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Posted 08 August 2012 - 11:52 PM

Thanks for the feedback, much appreciated. Im getting the feeling that I dont have the best motor in the field which is why I dont do as good on the more open tracks.

All the best for the weekend, ill be watching from a deck chair in Vanuatu B)
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#32 gazza

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Posted 09 August 2012 - 03:10 AM

View Postsnurfen, on 08 August 2012 - 10:30 PM, said:

Embs - how much do they charge for sending to you guys in Oz??

The postage isn't too bad, the more you buy the better off you are, but that's offset by the fact that we don't pay the VAT

Thank's for all the feed back Dave

Good luck running the event on the weekend
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#33 kalbfellp

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Posted 09 August 2012 - 08:39 AM

Ben M I checked all the motors that I had here and there was over 2,000 rpm variation from slowest to fastest. I went with the best I had and that was 900 revs slower than Haystacks one that he pulled out of a car to fit in his Pug. Even aligning hoods and running in brushes etc did not help much.just seems a lot of variation in these older motors.

#34 Mexico 2000

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Posted 09 August 2012 - 05:29 PM

Hi Dave,

Thanks for the feed back.

If possible can you please have a look at the body screws on my car #1 as it should have quite a bit of movement, and I did see somewhere else that someone was playing the body screws.

Could explain the drop in performance in the UK.

It was set up with -1/4 turn at the front and - 1 turn at the back.

Thanks
CHEERS

GARRY



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#35 slotcarmann

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Posted 09 August 2012 - 07:09 PM

Hi Garry

Sure, will check the screws for you.

Cheers
Dave

#36 slotcarmann

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Posted 09 August 2012 - 07:57 PM

Hi guys

Will someone please e-mail me the magic results spreadsheet, so I can complete it for our two rounds (slotcarmann@gmail.com)?

Will be checking the cars carefully tomorrow for correct set-up, decent clean braids, spot of oil etc. Then either tomorrow or Saturday, depending on when I can get the marshals and drivers to staff it, we will do Stage 1. Remaining stages Saturday/Sunday, to complete our Round 8.

Tonight is our club-night anyway, the classes being (a) LMP club cars (standard Avant Slots) and (B) F1 to our own club rules, so I'll be down there from 2pm today setting up cars etc until racing finishes, probaly about 11pm. On Sunday we have a Committee meeting at 2pm anyway - so it's solid slot cars for the next 4 days...!

What a shame...! lol

Next weekend's Round 9 will be similar, but we might be able to start a stage on the Thursday then do one on Friday and one over the weekend. Will update you as and when I have the info.

Cheers
Dave

Edited by slotcarmann, 09 August 2012 - 08:00 PM.


#37 snurfen

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Posted 09 August 2012 - 08:20 PM

Files sent Dave. It's a flipping good thing tis slot car thing isn't getting to be an obsession, isnt it?
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#38 slotcarmann

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Posted 09 August 2012 - 08:43 PM

Thanks Martyn.

I couldn't agree more, it would be awful if it became a full time occupation...!

Oh, wait a minute....lol...!

Cheers
Dave

#39 slotcarmann

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Posted 09 August 2012 - 09:34 PM

Hi Martyn

No e-mail received yet, can you check you spelt slotcarmann with two "n's"?

Cheers
Dave

#40 snurfen

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Posted 09 August 2012 - 09:56 PM

yep,it was a tale of "The Lost Consonant" !

Resent.
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