Re: Anyone have a shift finger for Jerico?
 

Has anyone contacted Scott or others at Jerico, and what are they saying? I have not had any problem with my Jerico but now you have me worried! I use a Hurst/Mr. Gasket V-Gate2 with stops.

Re: Anyone have a shift finger for Jerico?
 

Jerico fingers are being made from a cast 8620 steel. Does not have the strength or ductility needed. They have many surface cracks on them right off the shelf, we have done countless dye penetrant tests on them.

I'm obtaining new ones that are CNC machined from U.S made high strength billet SAE 4150 chromoly steel by a professional racing team.

Re: Anyone have a shift finger for Jerico?
 

One new finger in bag, the other we tried to break in the flat where the threads start since that is where they always seem to break. We used a big wrench with a pipe attached, tried adding heat also and that did not work either.. got it to bend a little bit.

Re: Anyone have a shift finger for Jerico?
 

Bobby;WOW,that should work!!!Any idea on their delivery date? ROY.

Re: Anyone have a shift finger for Jerico?
 

My only concern before ordering a bunch of these is the measurement of the flat area where the shift lever straddles the finger on the outside of the case. I have seen measurements of this area anywhere from .315-.326 on the five fingers I measured today. I would like to settle on a number with a little help from my fellow stick racers. I think I would rather have that be too big than too small and have play in the lever.

Re: Anyone have a shift finger for Jerico?
 

I am with greg,, what is up with a racer producing a part that seams to be an issue with these transmissions I have a customer who has gone thru a handful of these and no help from jerico except selling him the same thing that breaks ,,hats off to bobby on solving a problem ,, what happened to the making it right mentality ,, I know a bunch of racers who have gone to a different trans ,, including my customer ,, gmonde

Re: Anyone have a shift finger for Jerico?
 

Bobby;the three I have,two brand new,one broken.The two new ones measured .320 and .321,the broken one measured .311[taken at the flat where the arm fits],the other broken one I threw away! I agree,making them a bit larger is better than too small!! ROY.

Re: Anyone have a shift finger for Jerico?
 

Best I could tell on my DR4 mfg. 2007 was .312" minimum, maybe up to ..315. Hard to squirm around and get a real good number, but I would say .312" is good.

Re: Anyone have a shift finger for Jerico?
 

Racers producing better parts is how most of today's suppliers got their start in business.

Re: Anyone have a shift finger for Jerico?
 

I am betting that the OEM finger was designed at .320 but due to the weaker material, it was conforming to the shift lever over time and that's why used/broken fingers are measuring .311-.318. I would prefer to go on the thicker side, say .325, since the flat area is weak and this is where these fingers consistently break. This may require the lever engagement to be file fitted if necessary but I would rather sacrifice lever thickness for finger thickness.


Who's sick of this?

Re: Anyone have a shift finger for Jerico?
 

0.312" is "standard" 5/16" and mine show no signs of wear that I could see with the shifter lever removed. I am probably easier on the trans than most, and have used it less since 2007 than many racers in 1/2 season. The slot in the shifter lever also measured .312" minimum, with a little variation of course because the slot was punched by Hurst/Mr. Gasket.

Re: Anyone have a shift finger for Jerico?
 

I will gladly file fit the arm for a better,stronger finger!!! ROY.

Re: Anyone have a shift finger for Jerico?
 

I've never broken one nor has any of the people I usually race with around here but will but one just in case if you're doing a run of them. Sounds like a problem waiting to happen.

Re: Anyone have a shift finger for Jerico?
 

Did anyone tell Scott to look at this thread? I'm sure with a reputation at stake, he'd
look into the problem.

Great job Bobby....on the r&d to fix the problem!

Re: Anyone have a shift finger for Jerico?
 

I will be at Atco this weekend if anyone wants to see one. Also if you want me to send you more detailed info just shoot me an email bobby.fazio@gmail.com so I can add you to my contacts.

Re: Anyone have a shift finger for Jerico?
 

I just got off the phone [9:20 AM,Monday,CA.] with Scott at Jerico.He gave me the same story I heard from George,they claim ignorance! He told me the bushed opening must be out of round or I am shifting clutchless! I have ALWAYS used the clutch [McLeod Soft-Lok],the opening is round and tight,not sloppy.The first finger,3-4,lasted for at least 14 seasons,I have had the trans for 5+ years,the second one broke on the 7th pass!! I use a LONG shifter,OLD,that has NO stops,I adjust the linkage on a fully assembled DR4 trans with the top plate removed,I make sure the gears are not being over shifted! ROY.

Re: Anyone have a shift finger for Jerico?
 

Bobby;any progress on the new fingers? ROY.

Re: Anyone have a shift finger for Jerico?
 

Have someone running one in his trans now and getting what I believe will be my last prototype this week. If all the measurements come out to what I want then we are good to go. Can't rush something like this, I wanted perfection.

Re: Anyone have a shift finger for Jerico?
 

Great news! I am awaiting the availability of the fingers.

Re: Anyone have a shift finger for Jerico?
 

I've run a jerico since '06. One thing you can COUNT on is jerico will NEVER admit to a problem with their trans. Its always the driver, the car setup, the clutch, the this the that. It a shame they flat don't care. Once you buy a trans or parts they could care less after that. Unfortunately I just had to buy another 900.00 worth of parts from them. This will be my last jerico. Zero customer service.

Re: Anyone have a shift finger for Jerico?
 

Bobby;not trying to rush the issue,had not heard anything so was just curious!!Sounds like it is coming along well!! ROY.

Re: Anyone have a shift finger for Jerico?
 

Bobby;any new information on the shift fingers?

Re: Anyone have a shift finger for Jerico?
 

I have also broken a shifter finger and I would be interested in the billet replacement one you have being made. Just let me know what you need from me.

Thanks,

Re: Anyone have a shift finger for Jerico?
 

Ashton Hudson also broke one today@ the Division 4 LODRS event in Noble,OK.

Re: Anyone have a shift finger for Jerico?
 

Bobby is racing both of his car at Maple Grove this weekend. He'll likely be on when he gets home, I'll let him know if he forgets to check this post.

Re: Anyone have a shift finger for Jerico?
 

Just curious as to the age of these Jerico DR4s that are having issues with the shift "fingers" breaking. I have 2 older DR4s, the newest trans was new in 2000, the other almost 10 years older. In our local stickshift group, there is probably at least 10 cars with DR4s, and although several of us have broken some pieces inside our transmissions, I can`t recall anybody having issues with these fingers. One guy with a very early narrow gear trans had broken a shifter fork, but never the lever that operates the fork.

Re: Anyone have a shift finger for Jerico?
 

Seems like the ones I have heard of were not the older models,rather some of the later dr4 and dr4-4. My opinion, is that there could be an issue with the quality of the levers. However, i do think that if you use the taller shifter, and the long shift arms, that can contribute to the breakage. I use the standard length shifter and the longer lever and have not broken one. I have noted 7 racers that have broken the 3-4 and six of them had the shifter that is two inches taller and the longer shift arms.
I am all for a higher quality shift arm. Hoping Bobby or Jerico or someone makes them.

Re: Anyone have a shift finger for Jerico?
 

Sorry I am just getting on CR for the weekend. I have two more guys testing them for me and it looks like we may have a great finished product. Even looks like jewelry from what one racer said. We were testing hardness and heat treats along with different dimensions. The heat treat is being done by certified heat treat who does amusement parks, space shuttles, and even the new World Trade Center.

Re: Anyone have a shift finger for Jerico?
 

Just trying to think this through... If I'm thinking right the fingers go through two different acts during the 3/4 shift. The first being the disengagement of 3rd gear. What I don't understand is what does it matter on the disengagement of 3rd gear if we are running the extra long shift arms and/or extra tall shifter in this phase? If the finger needs or takes say 10 ft/lbs of force/torque to disengage from the 3rd gear dog ring then it take 10 ft/lbs no matter if we are using extra long or extra short shift arms or shifters, right? In this phase of it the extra long or short just effects how much effort we have to use in order for the shift finger to see the 10 ft/lbs of force to disengage 3rd gear.

Now phase two engaging 4th gear...
If there are not stops being used or not set correctly the shifter can put extra strain on these fingers (and everything else) by bottoming out the slider to the dog ring. In this scenario the whole system from the shifter to the dog ring will see whatever force is applied from the end user. If you pull the extra long or short shifter with 100 ft/lbs of force the shifter arm, finger, fork, slider and dog ring all see 100 ft/lbs of force. To me, if one has stops and the stops are set to where the internals of the transmission do not see any bottoming out situations then all of the 100 ft/lbs of force applied to the shifter by the end user stops at the shifter stops.

In this whole scenario here the only thing that is not taken into account is any force that the slider sees when it meets the dog ring before they mesh together. So before the slider and dog ring actually go into full engagement they do collide and to me its at this point that the stress of the whole shifting mechanism sees the most force and there is nothing you can really do about it. Now the extra long shifter and arms obviously lets you apply more force in this part of the process but you are actually moving the shift fork slower because the extra long stuff has you that much farther away from the pivot point than if you had the shorter arms and shifter. So now you have a comparison between speed and force.

Thoughts???

Re: Anyone have a shift finger for Jerico?
 

Rory;you were there at Pacific Raceways when I broke my second one!!! My DR4 was built in 1997 according to Jerico's records on serial numbers.I broke the first finger in May of this year,I broke the second one in July.I ordered another new one from Jerico and talked to both George and Scott at Jerico,both claimed they had NO knowledge of issues!!Scott blamed me,said I need to use the clutch during gear changes,I told him I have been since day one and knew of many people going clutchless!!A machinist friend took my BRAND NEW,never installed,finger to a heat treater,they measured rockwell hardness on the finger.Found it to be case hardened,not through hardened,Rockwell was 62 [brittle] on the outside,40 [soft] on the inside,they felt it should be trough hardened then stress relieved.I use a Long shifter 14" from pivot to tip of handle and the arms are 2&3/4" center to center.There are no stops on my shifter so I have the rods adjusted so the shifter can not 'OVER' shift the forks. ROY.

Re: Anyone have a shift finger for Jerico?
 

I have these now for anyone that was breaking them. Merry Christmas.

Re: Anyone have a shift finger for Jerico?
 

You have a PM

Re: Anyone have a shift finger for Jerico?
 

They are Billet CNC machined out of 4150 Chromoly steel by the Larry Morgan Racing camp and they look darn pretty!

Re: Anyone have a shift finger for Jerico?
 

You have PM

Re: Anyone have a shift finger for Jerico?
 

To answer a frequent question about the shift fingers fitting in 1/2, 3/4, and reverse, YES the finger is the same part number in these 3 locations.

The 3/4 finger (on the later transmissions) breaks most frequently (most now between as little as 4-6 runs) because it has the most force being put on it by the longest shift rod, among some other variables. You can get away with the weaker oem finger for reverse and possibly gamble on it for 1/2.

The Jerico is not an extremely user-friendly transmission and not one that racers prefer to work on at the track!

Re: Anyone have a shift finger for Jerico?
 

They look very nice Bobby. I am one of the lucky people who have not broken one yet. Brian

Re: Anyone have a shift finger for Jerico?
 

The first big batch went fast, proving for sure that there is a problem. I have no problem with guys getting their buddies together for a bulk purchase and we can work out a lower unit price. Ladder software is always half off with the purchase of a shift finger!

Made in USA of USA materials! BIllet CNC machining done by Larry Morgan Racing, heat treat done by Certified Heat Treat, Inc. in Dayton, OH. They do heat treat for the space shuttles, the new World Trade Center, amusement park rides, etc.

www.dragracetrans.com/shiftfinger.html
www.dragracetrans.com/laddersoftware.html

Shift Finger - $200
Full Set of 3 Fingers - $540
Free Shipping

Re: Anyone have a shift finger for Jerico?
 

I wanted to report to all that are interested.

1 year ago I purchased and used the shift finger provided by Fazio for the 2015 racing season. This past season I had no finger failures or problems not even a missed shift. Prior to this purchase, I was very frustated racing and replacing this finger often.
Thank you Fazio!

I look forward to the 2016 season and hitting those gears hard with confidence.

Aris

SS/C 108

Re: Anyone have a shift finger for Jerico?
 

Thank you Aris, glad to hear! Just got more in stock. We also paid contingency at the PA Dutch Classic this past year to the furthest advancing stick car in stock and super stock that was running our shift finger decal.

Re: Anyone have a shift finger for Jerico?
 

Are these still available for sale? Just broke the 3/4 finger. Also what is the process to replace this. Looks like the entire mainshaft has to be removed to remove these. Assume these are installed first when assembling a trans.