Throttle pots - fit and forget

[adam quantrill]

I've identified a new high-reliability replacement for the flapper throttle pot.

Fully sealed and 1 million cycle rating, it should outlast the engine.

Anyone else interested? I'm going to get a few in for evaluation. It'll need a bracket machining to adapt it to the current plenum bracket, so let me know and I'll get a few made.

Price should come out about 25 to 30 quid - assuming I can get some connectors to plug straight into the current loom.

If anyone knows the specs of the smaller hotwire pot, pass them on and I'll look into this too.

[pwd95]

This is my flapper type. I think there are three types, large flapper, small flapper & small hotwire. The small flapper & small hotwire look the same.

If it's this type I'll have one

[adam quantrill]

Is the small flapper also 5k ohms?

I can't remember what's in the 400SX to be honest, it might be the small one.

That 3-way triangular connector is likely to be the irritating bit.

[BadRedWedge]

pwd95 said:

This is my flapper type. I think there are three types, large flapper, small flapper & small hotwire. The small flapper & small hotwire look the same.

If it's this type I'll have one

Nice to see you thinking longer term Wyn

[pwd95]

Don't know WTF I'm thinking at the mo.

[honestjohntoo]

adam quantrill said:

I've identified a new high-reliability replacement for the flapper throttle pot.

Fully sealed and 1 million cycle rating, it should outlast the engine.

Adam, Thats quite a coup! Presumably its 5000 ohms linear (not logarithmic) with 90 degrees of rotation and fits the "D" shaped output stub of the throttle assy without mods?

All the NON hot wire applications of the flapper era were 5000 ohms and 90 degrees.

The Rover SD1 Club adaption using the RS rotary position sensor was 105 degrees which was not critical but has a possibly degraded top end performance.

Regarding the connector, its fairly easy to solder/graft the three wires into the original connectors pins, or splice the wiring and seal with heatshrink.

May I ask the manufacturer/supplier/cost of the pot?

Ramon

[adam quantrill]

I'd much prefer to supply with new connectors, mainly because I won't have to ask people to send in their old pots. I've been offering a recon service for a while but this is difficult without exchange pots to work on.

Unfortunately the new pot's travel angle is much greater than 90 degrees, but this can be overcome with a small bit of nifty electronics which will be all part of the package, and not affect the ECU at all.

Edited by adam quantrill on Saturday 12th January 17:52

[chedder]

Hi Adam, you can put me down for one

[TVRleigh_BBWR]

I'll be interested.

[gingerclive]

Hi Im also intrested in tis , Ive just reconed mine myself, but would prefer the reliability of something new.

[carob]

The throttle pot on mine is much bigger than the one in Wynns piccy. It has a connector where all the pins are in a straight line the connector is triangular almost house shaped i would say. If i could remember how to post pictures i would. I would be very interested in one of these if they are the same one.

Cheers

Rob

[adam quantrill]

That's the flapper one.

[carob]

I will take one if available.

[gingerclive]

Well mines the same as the one in the pic and thats on a flapper system!?

[pwd95]

Any more on these?

[rev-erend]

It's funny - mine broke last weekend 0 one of the wires broke as it enters the unit and the other 2 are not much better..

Luckily I had a spare

[Gandalf]

pwd95 said:

Any more on these?

Whats this - First Grief already Wyn?

[adam quantrill]

I have changed jobs recently so I have been holding off ordering the pots - they are special order you see. Luckily my work is electronics-related so most component companies will bend over backwards to help me ;^)

I'll get some prototypes ordered and made up fairly soon.

[pwd95]

What's the difference between the Hotwire & small Flapper type.

[TVRleigh_BBWR]

adam quantrill said:

I have changed jobs recently so I have been holding off ordering the pots - they are special order you see. Luckily my work is electronics-related so most component companies will bend over backwards to help me ;^)

I'll get some prototypes ordered and made up fairly soon.

Let me know if you want me to test one