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Author Topic: Bob's board speed controllers  (Read 18686 times)

Ivanhoe

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Bob's board speed controllers
« on: May 18, 2010, 11:22:22 pm »

Does anyone know if you can still obtain "Bob's board" speed controllers, or anything similar?  I'd also be interested to know if anyone knows of a DIY design for these"Wiper" type mechanical controllers?

Thanks in advance for any info.

Wilf
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The long Build

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Re: Bob's board speed controllers
« Reply #1 on: May 18, 2010, 11:27:11 pm »

Scoonies tend to do them  :-))
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Ivanhoe

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Re: Bob's board speed controllers
« Reply #2 on: May 19, 2010, 12:24:27 am »

Scoonies tend to do them  :-))

Thanks, unfortunately Scoonies don't list them any more, as far as I can see from their catalogue.
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Peterm

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Re: Bob's board speed controllers
« Reply #3 on: May 19, 2010, 06:55:50 am »

Try Westbourne Models or Cornwall Models.   Pete
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FullLeatherJacket

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Re: Bob's board speed controllers
« Reply #4 on: May 19, 2010, 07:25:28 am »

Or the Science Museum?  %)
FLJ
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The long Build

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Re: Bob's board speed controllers
« Reply #5 on: May 19, 2010, 07:38:07 am »

Thanks, unfortunately Scoonies don't list them any more, as far as I can see from their catalogue.

You will probably need to phone or email them, they were selling them at the Boat convention last year.
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Bunkerbarge

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Re: Bob's board speed controllers
« Reply #6 on: May 19, 2010, 07:42:52 am »

I purchased one from Scoonies at Warrington last year.  I'd give them a ring.
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exvtop

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Re: Bob's board speed controllers
« Reply #7 on: May 19, 2010, 08:47:51 am »

MFA/COMO DRILLS still show them on their magazine advertisements.
Part of a motor power pack, not a separate item.
However the Ad seems to have been running unchanged for quite a few years!

www.modelflightaccessories.com

Tel 01304 614696

Good luck
Mike
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Shipmate60

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Re: Bob's board speed controllers
« Reply #8 on: May 19, 2010, 08:51:02 am »

Fratton Model Centre (Portsmouth) still have them on the shelf.

Bob
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DickyD

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Re: Bob's board speed controllers
« Reply #9 on: May 19, 2010, 09:03:48 am »

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BarryM

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Re: Bob's board speed controllers
« Reply #10 on: May 19, 2010, 09:16:47 am »

The examples given don't appear to be the original item as shown here
under items 'DD': - http://www.modelboatmayhem.co.uk/forum/index.php?topic=22771.0  that I sold recently.

I believe the classic Bob's Boards are no longer made although, as noted above, there are other resistance controllers available.

Barry M

PS If you want to know who I sold them to in order to make the new owner an offer he can't refuse, send me a PM.
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hopeitfloats

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Re: Bob's board speed controllers
« Reply #11 on: May 19, 2010, 09:55:08 am »

they used to use them in RC cars. i dont know if they have gone ESC now but tamiya or kyosho are two brands that are well known. maybe worth looking at their web sites
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Shipmate60

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Re: Bob's board speed controllers
« Reply #12 on: May 19, 2010, 10:08:07 am »

BarryM,
The boards in Frattons ARE the original ones.

Bob
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BarryM

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Re: Bob's board speed controllers
« Reply #13 on: May 19, 2010, 10:30:12 am »

Bob,

Thanks for info. Their website appears to be down at the moment.

Barry M
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malcolmfrary

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Re: Bob's board speed controllers
« Reply #14 on: May 19, 2010, 11:02:33 am »

Quote
I'd also be interested to know if anyone knows of a DIY design for these"Wiper" type mechanical controllers?
I did one years ago using stripboard, home-made brass wire wipers to fit the double ended servo horn, a "Choc-bloc" connector and lengths of element from a dead electric fire.  While the elements were well tuned to match the motor performance, it was bulky and generated plenty of warmth inside its compartment with the additional "benefit" of lumpy control. 
As soon as ESCs became available at a sensible price, I converted and never regretted it.
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Shipmate60

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Re: Bob's board speed controllers
« Reply #15 on: May 19, 2010, 11:04:59 am »

Barry,
The phone number is: 02392827117.

Bob
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vintagent

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Re: Bob's board speed controllers
« Reply #16 on: May 19, 2010, 12:59:09 pm »

Some of us can't afford an ESC in every boat, especially if we have high Amperage motors.
Vintagent
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malcolmfrary

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Re: Bob's board speed controllers
« Reply #17 on: May 19, 2010, 01:05:35 pm »

Some of us can't afford an ESC in every boat, especially if we have high Amperage motors.
Vintagent
True (been there), but ESCs are a great deal easier to swap around than a servo with a resistance mat arrangement hanging off it.  Any ESC  that will handle a lot will handle a little just as well, unlike resistance controllers which need to be well matched.
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Ivanhoe

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Re: Bob's board speed controllers
« Reply #18 on: May 19, 2010, 01:44:12 pm »

Thanks to everyone who offered (constructive) advice, I have some ideas now to follow up, trying to save the pennies you see!

Wilf
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Shipmate60

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Re: Bob's board speed controllers
« Reply #19 on: May 19, 2010, 02:16:25 pm »

Wilf,
Its easier and cheaper to make up 1 board with receiver and ESC to swop around your models.

Bob
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BoatyBoy

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Re: Bob's board speed controllers
« Reply #20 on: May 20, 2010, 09:57:36 am »

Quote
Some of us can't afford an ESC in every boat, especially if we have high Amperage motors.
Vintagent

What sort of high "Amperage" are we talking about?
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vintagent

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Re: Bob's board speed controllers
« Reply #21 on: May 20, 2010, 10:10:57 am »

It seems that anything over about 20 Amps is suddenly expensive.  Of course I only know what I've seen in adverts as we don't have a proper model shop over here.
But paying as much for an element of control as a whole set of control gear seems a bit odd to me.

Regards,
Vintagent
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FullLeatherJacket

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Re: Bob's board speed controllers
« Reply #22 on: May 20, 2010, 12:23:48 pm »

Over 20A continuous and you need multiple MOSFETs, and they're the expensive parts. The four in a P98 cost us nearly £8, and we have to buy in quantities of 400 at a time to get down to that price.
It's not the ESCs which are expensive; it's the radio which has suddenly become stupidly cheap. Three years ago Giant Cod was probably a budget brand of fish-fingers and a 6 channel radio was the thick end of £150. Now it's less than a third of that.
Despite all of this, you still  only get what you pay for...................
FLJ
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derekwarner

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Re: Bob's board speed controllers
« Reply #23 on: May 20, 2010, 12:56:45 pm »

Without knowing the true %'s........world wide..... {-) for every one model boater there are probably 20 thousand aero moddlers & 12 thousand car or buggie moddlers  :o

So here I see...... say ~~~~~~+ 30 thousand people against a 1/2 a dozen boaties  >>:-(..... & this is where the economies of production favour the mass user market & hence very low costing electronics components ........R/C sets from China included  O0 ....

Same as the domestic computing industry.......what computers are not 40% less expensive today than in real terms 12 months ago? & where are they all manufactured?.............Derek %)
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vintagent

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Re: Bob's board speed controllers
« Reply #24 on: May 20, 2010, 01:29:31 pm »

This will not, of course, last for ever. As the Chinese get richer, they will want more and indeed expect more and will be forced to up their prices and we will all have to pay because we will have no home industry to turn back to.  Japanese stuff is no longer the price of a bowl of rice as they used to say.  It's as dear as our stuff was, consequently the Japanese are using China for production, but for how long before it too becomes expensive. Then where?  India?  Brazil?  Mexico?

So get your cheap stuff while you can, if you must. It's all false, but it's available for now.

I'll stick to my old English stuff.  At least it's repairable.
And pretty!
And I must say, it wouldn't bother me too much if I had to do without R/C, apart from the fact a walk round pond is not close by, but
I could get an inflatable for the price of an ESC and some exercise propelling it along the river!

FLJ, I don't know what a Mossfet is and I have no idea what any of the motors available to me draw in amps or even how to test them.
So I'm never going to lay out a lot of money on yet more electronics to control them.

Regards,
Vintagent

Regards,
Vintagent
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