 New Carb linkage for /4 engines- RAT "Accu-Link", Another approach for the solution of a long time issue. |
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| Jake Raby |
 Mar 23 2010, 07:44 PM
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#101
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Engine Surgeon  Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States  |
Its a full throttle linkage system... Meaning that it will replace everything all the way to the pedal.
I have 1/2 dozen test vehicles on site, but lack the time to devote to finish this. Now with the spring rush here I am busy just trying to meet deadlines imposed by procrastinators.. Its a never ending battle. |
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| jeffdon |
Mar 23 2010, 09:04 PM
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#102
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Senior Member Group: Members Posts: 1,094 Joined: 24-October 06 From: oakland, ca Member No.: 7,087 Region Association: None |
QUOTE(Jake Raby @ Mar 23 2010, 06:44 PM)  Its a full throttle linkage system... Meaning that it will replace everything all the way to the pedal. Now THATS interesting.......pics please! |
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| Cevan |
Mar 23 2010, 09:50 PM
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#103
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Senior Member Group: Members Posts: 1,079 Joined: 11-December 06 From: Western Massachusetts Member No.: 7,351 |
QUOTE(Van @ Mar 23 2010, 04:38 PM) Chris, you seem to be a master mechanic and a master carpenter! Thanks. I'll probably still go with Jake's linkage when it comes out because I know it will be bulletproof. I'm no mechanical engineer. |
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| DBCooper |
May 4 2010, 06:55 AM
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#104
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14's in the 13's with ATTITUDE Group: Members Posts: 3,079 Joined: 25-August 04 From: Dazed and Confused Member No.: 2,618 Region Association: Northern California |
If you don't want to wait you might contact the guy (Slowtwitch, last two pages) directly:
http://shoptalkforums.com/viewtopic.php?f=1&t=109159 This is his linkage: (IMG:http://www.914world.com/bbs2/uploads_offsite/i46.photobucket.com-2618-1272977735.1.jpg) Several other simple ideas in that thread too. |
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| Jake Raby |
May 4 2010, 08:32 AM
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#105
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Pete and I talked last week... He and I have collaborated a bit about the system.
What he has been doing is totally separate from our efforts, but we have been helping each other. (Mostly him sharing with me) I have been working on the insurance issues and may have a way around them. The big difference is my arrangement is a complete throttle assembly that will extend all the way to the pedal and in some applications will even include a pedal lever to replace the original, its not just a subs-system of the engine as most throttle assemblies are.. I am doing this to provide the best ratios for the size wheels that we have worked with, primarily because it is a possibility to have too light of a throttle action with these wheels and some throttle levers. Lots of people want this and if at all possible I want to offer our version of it, which is quite a bit different than what Pete has done.. He has AWESOME ideas and excellent machine work, no doubt. |
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| flipb |
May 4 2010, 10:06 AM
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#106
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Senior Member Group: Members Posts: 1,811 Joined: 2-September 09 From: Fairfax, VA Member No.: 10,752 Region Association: MidAtlantic Region 
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Jake, your business decisions are not up to me, but I'll toss in my two cents:
I think you'd be doing a great service to the TIV community in producing the Accu-Link system. Perhaps it would resolve some of your support & insurance concerns if you only sell them through "certified" resellers who provide some level of Tier 1 support. I know I'd screw something up myself, but if I had the chance to buy an Accu-Link system, it would be my pro wrench (big Pcar guy) who would install it. I wouldn't even attempt it. And a lot of the guys on this board are capable of both installing it themselves and providing some level of community support to others. Take that for what you will... just thought I'd offer my encouragement. Like I told you before, every month that the future of Accu-Link is uncertain is another month that I'm driving around with a Weber Progressive... (IMG:style_emoticons/default/poke.gif) |
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| Jake Raby |
May 4 2010, 11:52 AM
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#107
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
QUOTE Jake, your business decisions are not up to me, but I'll toss in my two cents: As always, there are tons of variables that no one except the man in charge will understand.. QUOTE I think you'd be doing a great service to the TIV community in producing the Accu-Link system. I concur. QUOTE Perhaps it would resolve some of your support & insurance concerns if you only sell them through "certified" resellers who provide some level of Tier 1 support. Actually, that would breed problems.. Because those resellers are generally like all other re-sellers in the fact that they don't use the system enough to thoroughly understand it. That means the support they give is marginal at best, or would be worse than no support because it would be the WRONG advice. This is one of my biggest gripes with most companies that re-sell components is that generally they have less than adequate experience. We pride ourselves in knowing more about what we sell than anyone else. QUOTE I know I'd screw something up myself, but if I had the chance to buy an Accu-Link system, it would be my pro wrench (big Pcar guy) who would install it. I wouldn't even attempt it. And a lot of the guys on this board are capable of both installing it themselves and providing some level of community support to others. Thats just part of life and part of selling things. All we can do is make it perfectly clear that the system has a difficulty level that isn't for everyone. QUOTE Take that for what you will... just thought I'd offer my encouragement. Like I told you before, every month that the future of Accu-Link is uncertain is another month that I'm driving around with a Weber Progressive... Lots of people share your feelings. Linkage has been the achilles heel of Carburetors for decades and I'd like to be able to change that.. I don't want to risk my business to do that, however. Doing business today is difficult if you cover your ass and do whats right and fair. There are complications that go much further than installation or manufacturing... Let someone have a sticky throttle and hit a brick wall at 80 MPH and thats when the shit hits the fan. |
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| Jake Raby |
Jun 21 2010, 05:52 PM
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#108
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Coming Soon!
 I re-designed the system and it is too damn good not to sell! |
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| VaccaRabite |
Jun 21 2010, 06:16 PM
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#109
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En Garde! Group: Admin Posts: 13,736 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region
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QUOTE(Jake Raby @ Jun 21 2010, 06:52 PM) Coming Soon! I re-designed the system and it is too damn good not to sell! Dude, this is GREAT news. Zach |
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| lotus_65 |
Jun 21 2010, 07:00 PM
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#110
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Senior Member Group: Members Posts: 1,609 Joined: 21-March 05 From: minneapolis, mn Member No.: 3,795 Region Association: Northstar Region |
lookin' good jake---
except for the (IMG:style_emoticons/default/hissyfit.gif) i mean dang, dude. This post has been edited by lotus_65: Jun 22 2010, 09:52 PM |
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| bugsy0 |
Jun 21 2010, 09:40 PM
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#111
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Member Group: Members Posts: 191 Joined: 26-July 06 Member No.: 6,508 Region Association: None |
I'm interested!
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| swood |
Jun 21 2010, 10:21 PM
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#112
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Senior Member Group: Members Posts: 1,839 Joined: 6-February 03 From: Strong Beach Member No.: 251 Region Association: None |
Do tell...pics and $
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| kharma |
Jun 22 2010, 09:02 AM
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#113
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Member Group: Members Posts: 68 Joined: 13-November 07 From: Billerica MA Member No.: 8,328 Region Association: North East States |
Awesome!!! (IMG:style_emoticons/default/beerchug.gif)
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| Jake Raby |
Jun 22 2010, 10:09 AM
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#114
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
The system is on the dyno today being evaluated... I will continue this for another couple of weeks doing back to back testing with Hex Bar to better understand the benefits of the system. I am re-configuring my data logging system to allow for throttle position logging so we can plot the absolute position of each carb/ throttle body throughout the range of motion.
One of the issues this system solves is the mechanical differential of carburetor position and cylinder offsets. I want to log this to substantiate these claims. What I have come up with for this final design is universally applicable to any common carbs used on these engines, you can swap between Weber, Dellorto, EMPI and Solex carbs with the same linkage system! I will offer three different ratios for movement so you can easily "tune" the pedal feel and travel for your driving style or application. I am holding pics of this final arrangement from the public as I work to enhance the aesthetics a bit with some new pieces that will be in place for testing when I return from Vacation on 5 July. The system is nothing like what I originally posted here, the re-design pretty much impacted every part in some way. This post has been edited by Jake Raby: Jun 22 2010, 10:11 AM |
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| jeffdon |
Jun 22 2010, 10:14 AM
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#115
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Senior Member Group: Members Posts: 1,094 Joined: 24-October 06 From: oakland, ca Member No.: 7,087 Region Association: None |
Eagerly awaiting details!
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| Jake Raby |
Jun 22 2010, 07:23 PM
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#116
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Had a very successful day on the dyno today! The actuation is so smooth and throttle position changes are so positive.
The engine just plain runs better, adding the acculink cleared up an off idle rich spot that the engine had with hex bar. The data logger is being reconfigured especially for this evaluation to include a method of measuring engine harmonics. |
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| Silverstreak |
Jun 22 2010, 07:45 PM
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#117
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Edmund J. Fournier #36 Group: Members Posts: 117 Joined: 2-April 10 From: Pensacola Member No.: 11,552 Region Association: South East States |
Smashing! Can't wait!
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| RiqueMar |
Jun 22 2010, 08:10 PM
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#118
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Enrique Allen Mar Group: Members Posts: 2,248 Joined: 28-August 08 From: San Diego, CA Member No.: 9,478 Region Association: Southern California
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| dinomium |
Jun 29 2010, 04:30 PM
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#119
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Git on a chair son, all the good stuff is goin over yer head! Group: Benefactors Posts: 2,777 Joined: 2-January 03 From: Bremerton, WA Member No.: 74 Region Association: Pacific Northwest  |
the waiting! I HATE the waiting! I could throw you a rope if you like?
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| ripper911 |
Jun 29 2010, 07:59 PM
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#120
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corde pulsum tangite Group: Members Posts: 2,920 Joined: 25-April 10 From: Powder Springs, GA Member No.: 11,654 Region Association: South East States |
I have only recently switched to dual carbs, and I now understand why this is such an issue... I will be buying this setup when it is available.
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