Printable Version of Topic

Posted by: bdstone914 Jan 8 2010, 09:05 PM

I am in the process of making a prototype hand throttle much like those that were used on 914-6 cars. For those of you who are not familiar with them it consisted of a lever mush like the heater lever that used a rod that ran through the tunnel up to the pedal assembly where it pushed on the accelerator lever to manually open the throttle for cold warm ups.
I think I can make the modified lever rod, bracket and modified accelerator piece and sell it for about $150.
For all of you guys running carbs do you think there is a need for it?
Bruce

Posted by: zx-niner Jan 8 2010, 10:18 PM

QUOTE(bdstone914 @ Jan 8 2010, 07:05 PM)

Posted by: ConeDodger Jan 8 2010, 10:37 PM

I am interested but you knew that... You are using my partial to reverse engineer I assume

Posted by: Rand Jan 8 2010, 10:43 PM

Rod that pushes the pedal assembly doesn't seem like the most efficient approach.

Posted by: GeorgeRud Jan 8 2010, 11:14 PM

It seems to work OK on the original -6s! I only wonder how many people actually would need one these days, more and more of the newer conversions will be injected and the carbs are probably going away.

Posted by: Travis Neff Jan 8 2010, 11:30 PM

Even with an FI engine, you could use it as a crude cruise control. Even with a -4 engine!

Posted by: McMark Jan 8 2010, 11:41 PM

They're definitely cool, and I've thought about making them. I can't say that I'd be ponying up to get one personally, but I would definitely promote the use of them to other people.

Posted by: Gint Jan 9 2010, 07:45 AM

I'm on the fence.

Posted by: zymurgist Jan 9 2010, 08:38 AM

I think it's a great idea... the hand throttle is invaluable to me when starting and warming up the 911 on a cold day.

Posted by: 9146986 Jan 9 2010, 08:40 AM

I've got all the parts if you need pics or a loaner.

Posted by: jim_hoyland Jan 9 2010, 08:52 AM

I'm interested, my right leg become very unconfortable on long drives, it would be good to be able to change positions without having to stop-and-rest. I have a Rennshifter and would need to have a slit cut in hte base for the handle to fit.

Posted by: rfuerst911sc Jan 9 2010, 09:50 AM

I might be interested. I have one on my 911 with PMO carbs and I'll be honest I don't use it much. Now keep in mind Florida generally doesn't get very cold and my PMO's I only have to feather the throttle for 15-20 seconds and they settle into a smooth idle. I'm guessing Webers may need a little more help. I have Webers on my GT clone.

Posted by: computers4kids Jan 9 2010, 10:12 AM

The hand throttle sounds like a nice tool for warming-up a cold engine, but quite frankly sounds dangerous as a "cruise control" as mentioned above. If your'e cruising down the road and have to react quickly, having the motor physically reved at cruising speeds is asking for disaster to strike. Perhaps I don't understand how the hand throttle works...does is release if the brakes are applied?

Another option for the "warm-up" idea, is using an "idle compensator" (on every junk 80's car) or Edlebrock sells them as well. Mount it to push your throttle linkage and put a on off switch in the cabin. It's throw is adjustable as well.

Here's a pic from my v8 application. It also works well for you teeners that have added AC....great way to increase the idle speed (if needed) when the AC is on.

Posted by: SirAndy Jan 9 2010, 10:29 AM

QUOTE(computers4kids @ Jan 9 2010, 08:12 AM)

Posted by: bdstone914 Jan 9 2010, 09:26 PM

QUOTE(SirAndy @ Jan 9 2010, 08:29 AM)

QUOTE(computers4kids @ Jan 9 2010, 08:12 AM)

quite frankly sounds dangerous as a "cruise control" as mentioned above. If your'e cruising down the road and have to react quickly, having the motor physically reved at cruising speeds is asking for disaster to strike

It's only dangerous if you aren't paying attention.
That means 99% of USA drivers are out!


Anyways, i've done a few long distance roadtrips in the 914 and every time i wished i had some sort of cruise control.

Hwy 80 goes straight through the desert for almost 600 miles with absolutely nothing between Reno and Salt Lake City.

A hand-throttle would have been a soooooo nice ...
Andy

Posted by: zymurgist Jan 10 2010, 06:26 AM

QUOTE(SirAndy @ Jan 9 2010, 11:29 AM)

It's only dangerous if you aren't paying attention.
That means 99% of USA drivers are out!

Posted by: morgan_harwell Jan 10 2010, 09:54 AM

Those of us with very early CIS/6 conversions ['73-'74] should be interested, too. Each morning, to start my CIS/6 conversion, I have to crack the throttle pedal slighty to fire it up, then hold the pedal at fast idle for about a minute to keep it running. After about a minute, it will idle without stalling.

A hand throttle would be 'nice to have' each cold start.

Posted by: johnnie5 Jan 10 2010, 10:42 AM

I like the idea Bruce, my carbs spit for 30 seconds or more. It is always a bit of a chore for me to keep my idle uniform during warm up. I am interested to see what you put together.

Posted by: iamchappy Jan 10 2010, 10:54 AM

I had to reengineer mine so i could retain the center console, worked great for setting the break in RPM on the engines first start.
Visible red knob on side of tunnel.


Attached image(s)

Posted by: Rav914 Jan 10 2010, 04:57 PM

QUOTE(iamchappy @ Jan 10 2010, 08:54 AM)

Posted by: iamchappy Jan 10 2010, 07:18 PM

It still is the stock setup with the rod, i just repositioned the lever from the shift to the side of the tunnel. It was a little tricky placing it as there are cable tubes that run there so i cut out a panel for a good look, got everything figured out welded a bracket for the lever and rewelded the panel back into place.