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Hudy Tyre Truer 3100 - Printable Version

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RE: Hudy Tyre Truer 3100 - BAracer - 2nd-Feb-21

My mistake...even my Italian friends describe an americano as "dirty water", but I struggle with the concept of the expresso, i.e. sit down with a cup, swirl it round, one sip and it's gone, stand up. All over in about 15 seconds.

Along with the Hudy, I had to raise enough funds for a power supply as well. Recommendation was "adjustable down to 0v, with at least a 5a output". Quite a few 0-30v/10a units available, but I could just imagine myself accidentally pumping too many volts though the truer with the wrong twist of a knob. But managed to find a 0-16v/10a unit, and this is on it's way to me from China as I write.

RE: Hudy Tyre Truer 3100 - KensRedZed - 2nd-Feb-21

Jeremy. Congrats! You won't regret buying it.

Slotloco. I stand corrected. A deviation in weight being off center on a rotating object is RPM sensitive. You clearly race at much higher RPM's than I do. You swim in an ocean. Chris Walker likes to remind me in a friendly way that I basically spash around in a pond. I prefer to race slow class cars. My cars don't vibrate at slower speeds. I win too many races to be ignored. The guys in my club fear my aluminum chassis to the point they've now started to buy them from me. Not a bad thing really.

However, I might finish dead last in your club. I've been racing less than 3-years.

Cheers,
Ken

RE: Hudy Tyre Truer 3100 - slotloco - 2nd-Feb-21

Don't mind me too much Ken, I am usually speaking with tongue firmly planted in one cheek as I launch the slot gospel from my soap-stand. 

- - unless it involves Australians . .  or sport, especially when it is Australians AND sport. And if it is Australians and cricket . . .  well let's not go there.... :) 

Actually, we're mainly on home tracks under 100 feet. This was one of our quicker guys, and three mid pack, racing Group 5 last December on my track.
They are lapping between 5.5 and 5.7 for 65 feet, but the quickest guys are 5.1 - 5.2 for this class. Being my own track, I can go 4.8 in my favourite practice/tuning lane.


RE: Hudy Tyre Truer 3100 - BAracer - 16th-Feb-21

So is this the moment the hobby starts to become a pain rather than a pleasure...?

[attachment=12630]

RE: Hudy Tyre Truer 3100 - BAracer - 16th-Feb-21

First question to all Hudy experts...

How do I know when the headstock is parallel to the grinding drum?

RE: Hudy Tyre Truer 3100 - KensRedZed - 16th-Feb-21

The bolts are counterbored so as not to be missaligned. It's machined straight. You'll have a hard time throwing it off unless you drop it.

There are a few changes I did to mine.

1) I true the tires at a very slight angle tapering smaller to the outside. It's actually very hard to try and missalign that system. I had to loosen all the bolts, give it a twist, and tighten the bolts again. You can barely notice the angle. Along with proper profiling, the slight angle helps the tires break-in on the track in without grabbing and flipping the car.

2) I found that the drum was leaving deep score lines in the tires due to a few high spots in the sand on the drum. So I took a wide file and barely touched the drum while rotating it one turn by hand to remove the extremely tall bits of sand. Be very careful, or you'll be buying a new drum. It takes me a few minutes longer to true the tires now. But the end result is much smoother.

Buy several fine grit nail files from the dollar store for profiling. Every tire needs to be profiled before it goes on the car. The sharp corners where the sidewalls meet the tread need to be rounded slightly.

Congrats on your new truer!!!

RE: Hudy Tyre Truer 3100 - BAracer - 16th-Feb-21

Every piece of paper in the pack says set up your ground plane first...

RE: Hudy Tyre Truer 3100 - chrisguyw - 16th-Feb-21

(16th-Feb-21, 01:50 PM)BourneAgainRacer Wrote:  First question to all Hudy experts...

How do I know when the headstock is parallel to the grinding drum?

Hello Jeremy, It is definitely worthwhile to check/adjust the alignment on your Hudy...(Martin Hudy himself has always suggested you do this prior to its first use).

The good news is that it is simple, and does not require any special tools, but, it is a bit fussy to explain............luckily (for my two typing fingers)  "Triggerman" posted a Youtube video a few years ago that is quite east to follow (if a bit longwinded).....look for,...."Adjusting the ground plane on your Hudy tire truer".

Most of the folks I know have their own variations on this procedure , but, it will give you all the info you need.

Cheers
Chris Walker

RE: Hudy Tyre Truer 3100 - BAracer - 16th-Feb-21

Just got to wait another month for the power supply to get here from China, then I'll get cracking!

RE: Hudy Tyre Truer 3100 - BAracer - 16th-Feb-21

And just another observation...

It appears that I will only use about a quarter of the drum width to true my 1/32 rubber tyres. Is there a way to use the full width of the sanding surface over time to get full value out of the drum?