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Search took 0.01 seconds. Search: Posts Made By: Jonny_H
Forum: For Sale 11-11-2011
Replies: 0
Views: 658
Posted By Jonny_H
90s RRC magazines

Hi all,

I've been out of racing for a while now (last forum visit Sept 2008!), but sorting out some house stuff I've come across my old RRC magazines, starting around the end of 1991 and running...
Forum: Electrics 04-09-2008
Replies: 9
Views: 1,272
Posted By Jonny_H
But is that 370 W electrical input (current ×...

But is that 370 W electrical input (current × voltage), or 370 W 'brake' mechanical output (torque × speed)?

If it's the latter then the current required will be quite a bit more...
Forum: Mid West 02-09-2008
Replies: 37
Views: 3,582
Posted By Jonny_H
Thanks Phil! :thumbsup:

Thanks Phil! :thumbsup:
Forum: Mid West 30-08-2008
Replies: 37
Views: 3,582
Posted By Jonny_H
F3/4/5 Mid-West entries

Who's entered for which days, Phil?

Thanks!
Forum: The PlayGround 23-08-2008
Replies: 75
Views: 4,704
Posted By Jonny_H
This is second-hand information, but everyone on...

This is second-hand information, but everyone on the Pro/Engineer users email list reports that benchmarks run slower under Vista than under XP - and most of these people ought to now how to...
Forum: General Race Chat 23-08-2008
Replies: 32
Views: 3,582
Posted By Jonny_H
Because real cars don't do 300 mph. This is my...

Because real cars don't do 300 mph. This is my whole point - the speed doesn't scale like that. A 1/10th buggy doing 30 mph looks like it's going faster than a Formula One car or a Bugatti Veyron,...
Forum: General Race Chat 14-08-2008
Replies: 32
Views: 3,582
Posted By Jonny_H
No... The effect when falling is exactly the...

No...

The effect when falling is exactly the same. From the top of its flight (i.e., zero vertical velocity) the car will accelerate downwards at 10 (okay, 9.81) m/s^s. So, in 0.5 sec, both cars...
Forum: General Race Chat 14-08-2008
Replies: 40
Views: 2,995
Posted By Jonny_H
I think it would have to be a covered-wheel...

I think it would have to be a covered-wheel class.

Our big, open, spiky tyres (and exposed suspension) would add a lot of aero drag - although if the rules would allow you to fit snoring car...
Forum: General Race Chat 14-08-2008
Replies: 32
Views: 3,582
Posted By Jonny_H
Exactly. If you're looking at a film of a car,...

Exactly. If you're looking at a film of a car, which has no other clues to the size, then your brain would assume that it's about "car-sized", i.e. about 4 m long.

It will then make further...
Forum: Team Losi Racing 12-08-2008
Replies: 11
Views: 920
Posted By Jonny_H
After checking the side-to-side balance (and also...

After checking the side-to-side balance (and also the 'tweak', 'diagonal weight' or 'wedge'), here's another vote for turning the brakes down (or learning to ease off them and correct the steering as...
Forum: General Race Chat 12-08-2008
Replies: 32
Views: 3,582
Posted By Jonny_H
:p :p :p Nope, 10's too much - that would...

:p :p :p

Nope, 10's too much - that would slow the 'scale' acceleration down by 100, because it's metres per second squared.

Try this then: you know how you used to hear "my car does 25 mph, so...
Forum: Mid West 11-08-2008
Replies: 28
Views: 2,729
Posted By Jonny_H
You didn't get pics of any of the exploding cars...

You didn't get pics of any of the exploding cars through the day - what was with those track markings?

And on a different note, was I the only one suffering with huge grip roll? What did other...
Forum: General Race Chat 11-08-2008
Replies: 32
Views: 3,582
Posted By Jonny_H
<grin> Who said anything about speed? I just...

<grin> Who said anything about speed? I just said "it would look like full size"...

The problem is acceleration. Basically a 1/10th car still accelerates (in any direction) at about 1g - but the...
Forum: Electrics 11-08-2008
Replies: 6
Views: 1,032
Posted By Jonny_H
It seems that timing and gearing do more or less...

It seems that timing and gearing do more or less the same thing - so you can run taller gearing with less timing, or shorter gearing with more.

Too much of both is a quick way to a purple comm,...
Forum: General Race Chat 06-08-2008
Replies: 32
Views: 3,582
Posted By Jonny_H
Way cool! How much is it slowed down by? 10:1? ...

Way cool! How much is it slowed down by? 10:1?

I'd love to see a video of 1/10th slowed down by ~3.2:1 (sqrt(10)) as I have a theory that it would look like full size...
Forum: Mid West 17-07-2008
Replies: 35
Views: 3,480
Posted By Jonny_H
When it's totally dry on the Coventry astro,...

When it's totally dry on the Coventry astro, there's so much grip (and small bumps) that cars can randomly flip half-way down the straight...

I love it in the wet or damp (apart from cleaning the...
Forum: Mid West 17-07-2008
Replies: 35
Views: 3,480
Posted By Jonny_H
I'm just hoping we get a little bit of rain (not...

I'm just hoping we get a little bit of rain (not too much!) - otherwise it'll be broken-car-tastic, like it usually is in the dry. :(
Forum: Mid West 16-07-2008
Replies: 14
Views: 1,806
Posted By Jonny_H
Got four emails last night - nothing prior to...

Got four emails last night - nothing prior to that.
Forum: North East 15-07-2008
Replies: 35
Views: 3,411
Posted By Jonny_H
I no longer seem to do club meetings,...

I no longer seem to do club meetings, unfortunately.

It's a simple matter of time and energy - both in the week to strip/clean/prepare the car between meetings, and at weekends to actually go...
Forum: Electrics 13-07-2008
Replies: 32
Views: 2,095
Posted By Jonny_H
Coooool... :drool: I've really got to find...

Coooool... :drool:

I've really got to find time to get my L3 up and running again.
Forum: Electrics 12-07-2008
Replies: 32
Views: 2,095
Posted By Jonny_H
1) Are you guys still running Pro10?? 2) How...

1) Are you guys still running Pro10??

2) How do you get enough traction with a Pro10 to get anywhere near dumping? My RC10L3 (190mm Pro10) always had to be turned down to make it driveable, even...
Forum: The PlayGround 12-07-2008
Replies: 146
Views: 12,301
Posted By Jonny_H
Wadworth's 6X, no contest. The Jupiler in...

Wadworth's 6X, no contest.

The Jupiler in Belgium was extremely good, and Tui in New Zealand went down very well.
Forum: Mid West 02-07-2008
Replies: 22
Views: 2,331
Posted By Jonny_H
Good spot... is there going to be a formal...

Good spot... is there going to be a formal announcement?

Nothing on the Mid-West Regionals site (http://www.brca-midwest.co.uk/).
Forum: General Car Talk 22-05-2008
Replies: 28
Views: 2,691
Posted By Jonny_H
Erm... basic free-body-diagram theory here. A...

Erm... basic free-body-diagram theory here. A moment is a moment is a moment (or torque, or couple, as you prefer). It has exactly the same effect no matter where it is applied - the reaction...
Forum: I Made This ! 21-05-2008
Replies: 39
Views: 7,509
Posted By Jonny_H
aaaaand... so what? Besides, it depends on...

aaaaand... so what?

Besides, it depends on roll angle not yaw rate (which would be in deg/sec); and it also very much depends on the length of the arms and their angle at normal ride height.
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