Author Topic: my 4FL...  (Read 3581 times)

41juergen

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Re: my 4FL...
« Reply #30 on: March 30, 2018, 12:45:56 PM »
So here is another question: what is the correct Position for the lower bolt of the rear shock? I have 2 different setups, one in the middle (locks like the stock position) and the higher one. On my 3XV I have mounted a 5mm ring below the upper mounting point which helps to get into the corners a bit easier. With the 4FL shock beeing mounted in the top position the distance from middle of the axle to a bolt on point of the rear seat frame is the same as on the 3XV, so should be the same chassis geometry ....


kva882p

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Re: my 4FL...
« Reply #31 on: March 31, 2018, 09:12:55 PM »
middle hole is correct one

TZRtim

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Re: my 4FL...
« Reply #32 on: April 07, 2018, 02:34:46 PM »
 (-P)also confirm its the middle hole , iv seen 3 now mounted wrong . Easy fix tho
May the wind blow light and your groups shoot tight - UKV...  Biker and shooter for life ...

41juergen

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Re: my 4FL...
« Reply #33 on: April 09, 2018, 08:03:12 AM »
Thank's a lot for the feedback, will change it back...

41juergen

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Re: my 4FL...
« Reply #34 on: July 17, 2018, 07:35:49 AM »
Update: after several welding and cutting sessions this is how the engine looks like today:

welding session...


after cutting and more welding and more cutting its that..


the reed case modified...


reeds married between 3XV and 4FL...


spacer plate and modified PV bracket..


The spacer plate is needed because the 4FL has a 105mm rod and I installed a modified RZ 110mm rod to fit (as the 3XV has).

Crank

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Re: my 4FL...
« Reply #35 on: July 17, 2018, 09:24:40 AM »
Wow! Impressive work.

Toop

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Re: my 4FL...
« Reply #36 on: July 17, 2018, 11:18:12 AM »
Great work  (-P)

41juergen

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Re: my 4FL...
« Reply #37 on: September 08, 2018, 07:01:38 AM »
Another update...
Welded the 3XV flange to the 4FL pipe..





And than put everthing together and brought her to life..






vinny

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Re: my 4FL...
« Reply #38 on: September 08, 2018, 09:00:41 AM »
Cool little bike  (-P)

41juergen

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Re: my 4FL...
« Reply #39 on: November 21, 2018, 08:22:08 AM »
Just a question: is the gear box transmition the same between a 4FL and a 4DL?
Thank's for the feedback
Juergen

Toop

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Re: my 4FL...
« Reply #40 on: November 21, 2018, 10:00:34 AM »
No, the references are different!
Not so much staging, but the finish is extra on the 4DL ...
Also, you can easily make an SP box, better adapted to the sport. The gables are available ...

41juergen

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Re: my 4FL...
« Reply #41 on: November 21, 2018, 10:24:17 AM »
Sorry Toop, may be I do not understand correctly. So you say the gear ratios are different between the 4FL and the 4DL? Is the 4DL better to siut on a road going bike (no race bike!)? And what do you mean with "the finish is extra", is the manufacturing process better for the 4DL?
Juergen

Martin77

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Re: my 4FL...
« Reply #42 on: November 21, 2018, 12:18:31 PM »
 Here's what I have for the ratios, I don't know what the SP is.


             4DL ratios                  4HW

primary    3.318                     3.227
1st           2.5                         2.833
2nd          1.937                     1.813
3rd           1.684                     1.368
4th           1.142                     1.143
5th           1.136                     1
6th           1.043                     0.917

final          18/51                      16/46

Chris_

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Re: my 4FL...
« Reply #43 on: November 21, 2018, 04:08:05 PM »
Hi @ all,

I have a different info about the gear ratio between the DL and HW (in german itīs called "FL").....they are similar.

Have a look at the pics below......

Both pics came from official and original Yamaha repair-manuals. The french one is dedicated for the DL R and the first pic (german) deals with the HW/FL.

Secondary ratio:
HW/FL = 16/46
DL R    = 18/47
DL RR  = 18/51

The SP-Version has a different gear ratio than the DLīs. I dont own any printed info about the SP but if i remember right, the 1st and 6th gear are longer compiled. Secondary ratio is the same like the DL RR 18/51.

Regards

Chris

« Last Edit: November 21, 2018, 04:32:02 PM by Chris_ »
TZR 125 DL RR Belgarda, Sachs ZZ 125

41juergen

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Re: my 4FL...
« Reply #44 on: November 22, 2018, 07:53:06 AM »
Thank's Chris, will check it out..