Hooking into this thread because I started wondered about the instructions written in the FG installation document for this 2-speed gear.
This is the first time after days of search were I find writings on the mounting of part FG7458:
FG7458 SHIFT CARRIER
I contacted meanwhile my LHS (Local Hobby Shop) and they agreed on my initial thoughts were FG was believed to have it the reversed way in their instructions. Now waiting an answer from FG themselves.....This because looking at the rotation-direction of the shaft were this part is mounted to, I was in favor of having the finger snap behind the pin in the 2nd gear carrier to have best 'grip'.
Carafully reading Wolly's way of mounting, I understand the finger should NOT grip behind the finger, but at the set amount of RPM only lay against the pin to engage 2nd gear...
Why is that? Will this give enough grip to the pin? I still can't believe why not reverse it to have more grip to the pin.
Anyone?
Thank you,
Gerrie, the Netherlands.
(working on the install of the 2-speed in a 4wd 510mm chassis one5mini)
Update:
Later this day I checked the method Wollie proposed by using the tie wrap (See picture):
During the first test the shift carrier was mounted like Wollie proposed, the screw to hold the disc on the axle is on 12 o´clock and the adjusting screw is on 11 o´clock. I hold the tie wrap by a piece of pliers and throttled up.....
No shifting to 2nd gear. I turned the adjustment screw out so it was flush with the surface it was mounted in....still nothing, only light force was felt both tries. Surely not enough to get the car going while in 2nd gear.
Then I reversed the shift carrier so the the screw to hold the disc on the axle is on 12 o´clock and the adjusting screw is on 1 o´clock.
In this situation, when engaging, the pin is surely gripped by the finger.
Immediate success! Already at a low RPM the gear carrier was rotating and took the tie wrap with force, unable to hold it by the pliers.
I opened up the 2-speed, turned the adjuster in until it was 2 full turns below the surface. Now the 2nd gear engages on the stand at about 14.000 RPM.
Then tried on the street, no engaging to 2nd gear.....Huh?
My differences between in 1st and 2nd are 20/44 and 23/40, so 7 teeth. This should be noticeable isn't it?
Possibly the street was too bumpy and I need to try it on a more paved surface.
If this still doesn't shift, I will reverse the carrier again and re-try.
Other users followed FG's instruction and that worked well for them:
www.largescaleforums.com/threads/fg-2-speed-clutch-question-help-needed.19178/
I get back here in a couple of days for more news....
Update:
Track tested today....
I did not wanted to risk the pin from snapping and started to follow the FG-way, in which the finger will not grip the pin, but just push against the pin. Set-screw was 2.5 turn in from flush.
Indeed the 2nd gear engages! I was stunned....
A little too early for my 4wd 510mm chassis, but hey...it worked!
Gave the set screw another turn in and I was happy.
I did not try the reversed way, left it the way FG writes.
To hear the shifting is different to what one can hear with nitro cars. The shift to 2nd is best heared when not give full throttle like one does a speedrun. After a few tries the RPM at when the sifting is done can be noticed and with some practice you are able to sustain that RPM a little longer. Then the shifting is better heard.
My difference is 7 tooth. 20/44 in first, 23/40 (=standard 1 gear) for second.
Thanks.
