Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[Fxr4Rider]

   Thanks for the wealth of information

[ltank]

  This is my final figures and plan. I can go 24 tooth motor with 36 clutch hub(one tooth smaller should allow me to keep the same primary chain) and the Andrews 30 tooth pulley and keep the stock 65 tooth pulley and belt. Using the formula    36/24 =1.5     65/30 = 2.166        1.5 x 2.166  3.249   Final Ratio a little higher than the 94 FXR but lower than the others. Is this a good compromise?
  My stock belt 133 tooth with 32/65 the rear axle was about 1/4" from being all the way forward. Using the 30 tooth pulleythere is alot of room for the axle to be moved back for the correct tension.
Andrews installation notes
 "Rear axle position adjustment for each tooth change on transmission sprocket = +/-  .125" (3.2mm)"
"Rear axle position adjustment for each tooth in belt length = +/-  .280"  (7.1mm)"
This will save the cost of a new belt and a new rear pulley cost about 400 bucks. The 30 tooth has been purchased and this leaves only the new 24 tooth motor sprocket. I already bought the elec speedo recal unit from Dakoda Digital
Wish me Luck! The way things go sometimes, I will need it!!!
Thanks,
Ltank

[FXR2evo99]

ltank,

I have heard of guys going 24/26 for the primary in their twin cam touring bikes over the years, when they do this they talk about flipping the shoe tensioner in the primary....or other wise it is too tight.....which is the dilemma of what you are about to do. 

I can offer you no technical advice on the merits of the success or failure of what you are about to embark on, since I have never done it.....

I wish you well with your efforts!!!

 

Regards,

Tim

[FXR2evo99]

Well my shifter shaft lever that comes through the back of the primary should be here today so I can finally begin reassembly of my Primary, and get my primary reassembled and completed. So I can actually report on my findings.

Regards,

Tim

[ltank]

Going from a 25 to a 24 motor sprocket should not be a big deal. The tensioner has plenty oof room to be adusted upward to remove the excess slack caused by the smaller pulley. My Mechanic has a 24 tooth in his  EVO FLH.

This is from the Baker site" Over the years, the factory used two primary drive ratios. The 37/24 (1.54 ratio) was used from 1985-93. From 1994 and up the 36/25 (1.44 ratio) was used, except for the 1999-up fuel injected FLTs which have the 1.54 ratio for improved acceleration." Sprocket section. 21 / 22/ 23 tooth motor comp sprockets.

Baker has their primary chain section" Changing the compensating sprocket size or the clutch basket size will require a new length chain. Call our tech dept to talk about the best combination for your application." They have three length primary chains listed  for FXR/FLT/FLH .   74 tooth (two links smaller), 76 link STOCK and 78 link chain( two links longer.) Going 2 tooth smaller motor comp sprocket would require a shorter primary. But I am only decreasing by one tooth I am sure I will be OK.

I will be using a 36/24 that equates to (1.5 ratio) on the primary it falls in the middle of the two ratios above. I think the stock 76 link chain will work fine for only one tooth difference.

When I get it all done for my birthday next month I will post how it works after I ride it a few thousand miles.This way I will know what I am talking about.

[FXR2evo99]

Finally my shifter rod showed up that I ordered, and because they are now "pending obsolete" I went ahead and ordered two of them, so here we go installing the small Spacer.






[NOTE: Please remember that putting your curser next to the paper clip icon below the photo will allow you to enlarge the photo plus save it to your computer if you desire OR if you merely wish to see it enlarged simply put your curser on the photo and "LEFT" click and it will enlarge]

[FXR2evo99]

Showing the sliding cam being installed....


[NOTE: Please remember that putting your curser next to the paper clip icon below the photo will allow you to enlarge the photo plus save it to your computer if you desire OR if you merely wish to see it enlarged simply put your curser on the photo and "LEFT" click and it will enlarge]

[FXR2evo99]

Notice their are 2 spacers one is aprox 1/8" thick and is a hexicon the other is a round spacer and is .0250" thick or nearly a 1/4" thick…and their position is next to the rotor.  Pay special attention as to which one you will put inboard or out board of the other….if your bike has never been opened and the compensating sprocket and clutch shell basket NEVER removed simply put back together as you found it….I did mine this way because of looking at page 22 and page 40 of my 1999 FXR2 Parts Book, however reversing them would be acceptable as well.

REMEMBER to APPROPRIATELY clean the Compensating Sprocket Nut very well of the old Red Loctite before placing a couple of NEW drops of 263 Red Loctite on the threads of the Compensating Sprocket Nut before installing with a electric impact wrench

[FXR2evo99]

If you haven't been in your primary yet and you have ever removed the inspection cover to fill the primary with primary fluid, you will realize just how difficult it is to remove that cover since that's where the shifter shaft comes through.  This is also the location that you would adjust the shoe tensioner.  I went ahead and set the shoe tensioner at 5/8" which is more on the tight side but that way I can keep from having to worry about the tension for the primary chain, keeping me from entering that area and pulling the shifter on and off, given that they are no longer making this shaft anything I can do to keep from having to mess around with the shifter I am all for!!!

If you look carefully you will see 4 straight screws secured into the inner primary which I use to momentarily hold the gasket in place and then reattach the outer primary.


[NOTE: Please remember that putting your curser next to the paper clip icon below the photo will allow you to enlarge the photo plus save it to your computer if you desire OR if you merely wish to see it enlarged simply put your curser on the photo and "LEFT" click and it will enlarge]

[FXR2evo99]

Today put the bike on the highway.....for about 175 miles.

So far the top speed is 111 miles per hour but there was more throttle left....not too much but there was some left.

The cam I have installed and now the gearing package is working very well together.  5th gear has become very responsive.

The bike is quicker, more responsive, and I feel no negative additional vibration.  

I like 3.360 final gearing for this bike.

If one were to study the gearing of 2.925 carefully you would see that 4th gear matches up to the 5th gear of 3.360.  Effectively what happens with 2.925 Final Gearing is that you end up having 5th gear being an "over drive" gear...and effectively using 4 gears to enjoy the bike....

My issue with 2.925 is that I can go into 5th gear sooner and make all of the gears more responsive.

I will provide more analysis later.

Regards,

Tim

[FXR2evo99]

will save this for posting something else later.....

[ltank]

  Well I bought all the parts and they will be installed next week! Motor sprocker was changed from  25 to 24. Tranny changed from 32 to 30. Rear wheel changed from 65 to 68. Branch wanted a 3.5 ratio. Stock was 3.37 on early FXRs but  99 and 2000 was 2.925 on the overgeared 5 sppeds. with the changes I made the numbers are.
36/24 = 1.5    68/30 = 2.266   2.66 x 1.5 = 3.4 Ratio on the 5 speed but when adding a Rivera Primo Overdrive gear set it retains the  3.4 in 5th but 6th gear makes. (x .86 = 2.924 Just over Stock.001) My new 6th gear equalls the tall 5 speed  final gearing. The  V111 motor should be happy. I will now be a able to drive between 60 and 75 easier without all the extra shifting and always in  my power bannd without having to downshift (dont want to lugg the motor). Added a  the Barnett Scorpian Clutch, Baker throwout bearings and High Torque inner primary bearing. I have the Dakoda Digital speedo recal. Big reliable motor with good 1st through 5th and a .86 Overdrive to retain my highway gearing. Went with the  1.125" S&S high Strength Rear Belt. Did I miss some thing? After it is installed and put a least 2,000 miles on new setup, I will let everyone know how it came out.
Thanks
Ltank

[ltank]

    I put almost a 1,000 miles on the  on the new Primo-Rivera OverDrive gear set along with the 25 tooth motor sprocket (tried the 24 but I like the 25 better) with the 36 tooth clutch basket. The tranny has a 30 tooth and the rear wheel has a 68 tooth 1.125" belt and pulley. S&S said their new belt will handle the 124 just fine, so I bought it.
The tranny shifts smooth with no gear whine or noise. The gear set was beefy. The local shop was impressed with it. The only problem was the neutral light did not ground to the shift drum not completing the circuit to make the neutral light work. A slight mod to the thickeness of the washer under the switch solved the problem and it fine.
 The old 5 speed was in great shape but I wanted  better gearing for around town and small two lane scenic roads where I live. It is all working together with the S&S V111.
                                                  All I can say is WOW!!!!!!!!!WOW!!!!!!!!!!!!!!!!!!!WOW!!!!!!!!!!!!! What a thrill to ride!
On the Barnett Scorpian Clutch I had to put 6 green springs( 82 lbs each = 492 lbs max for racing was 6 red springs for 600 lbs)  in to prevent the clutch from slipping when I twist the throttle above 4300 RPM. Bike has 116 HP@5600 RPM and 122FT.LBS@ 3800 RPM. 1st gear has a 2.94 ratio and 6th OD is a.86 ratio.
36/25= 1.44 clutch/motor,  wheel/tranny 68/30=2.266,    1.444 x 2.266= 3.264 final ratio on  5th gear. 6th gear is 2.80 the Stock bike was 2.925.
The bike has the power to pull it just fine even riding two up with gear. The number from the Baker gearing site confirms close what I am actually getting.
http://www.bakerdrivetrain.com/oldgearratios/rpmCalc.htm
Stock was 80 MPH @3100 RPM now with Big Motor and 6 Speed 80 PMH is at 3K RPM.
I Really Really Really like it a whole lot!!!!!!!!!!!!!! My wife can't wipe this smile off my face no matter how Mad she makes me at times!!!

Ltank

[FXR2evo99]

Itank~

CONGRATULATIONS~~~~   



It's sweet when we reach the mountain top with our journey....

Your HP and Torque are crazy stuff for sure.....that's a lot of horsepower and torque for a 565 lb bike.....do you keep the front wheel on the ground MOST of the TIME ?  ?  ?

And I would say with that kind of speed you are flying in rarified air, where WHEN you do smile there aint no bugs up there.....so your TEEFFERS keep CLEAN TOO!!!!

Regards,

"Classic"

[ltank]

Well I have not wheelied yet. My friend Mike has a 89 FXLR lowrider with stock 31 degree rake. Progressive 940 shocks and the Harley cartrige 39mm front end.
His bike wheelies all the time. He has a Hopped up Ultima 120" with 133HP 141 TQ. He smokes me but its OK. I can still scare myself. He has problems keeping his front wheel on the ground. His bike geometry makes it wheelie easily. He said the 13.5" shock dont squat down under hard accelleration. but he has gobs of power. My bike is louder than his thunder headers untill we hit 3800 rpm then he smokes me and his bike is louder at that point.
Ltank