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1978 r80/7 down shifting issue
1978 r80/7 down shifting issue
I have an issue with my 78 r80/7 where when I try to down shift I can’t engage the shifter I press down and nothing happens.. unless I click up a gear and then go down. Then it engages and I can shift down. The other thing I can do is kind of flutter the shifter if that makes sense. Kind of push it down with the edge of my foot and let it flap up a little. Then I can down shift. Anyone know what I mean?
- schrader7032
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Re: 1978 r80/7 down shifting issue
http://www.rubberchickenracinggarage.co ... stment.pdf
Secondly, it might be time to lubricated the input splines to the transmission. This can sort of be done by sliding the transmission (and everything behind it) backwards about 3/4" and getting a stiff brush down to the splines. Probably best just to pull the transmission and do thorough cleaning.
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.
- srankin
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Re: 1978 r80/7 down shifting issue
So, if I am correct, your shifter link has an adjustable rod on it. I would check to see if your foot peg is where you want it and the shift lever is properly adjusted so when you do shift, your foot engages the lever the way it should.
As for the clutch, by all means check and adjust if needed. My 78RS has a grease fitting on the transmission clutch lever, give it a shot of grease. If you haven't greased the transmission input shaft, that is also a good thing to do.
The transmissions on this year bike are pretty robust. unless you have high miles or have been really hard on it, I don't think you should have to open the transmission up. A gear oil change and inspection of the magnetic plug for excessive metal bits may point to an internal problem. Cheers, St.
Re: 1978 r80/7 down shifting issue
I basically just coped with riding the bike this way. I have to shift up before I shift down. It’s a pain but I don’t know what else to do. The peg seems to be at the right height. I’d say the shifting rod (?) is a little wobbly and I thought about trying to tighten the bolt but it’s on the backside and I’ll have to figure out how to get an Allen wrench in there.
Thanks for your help though
- schrader7032
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Re: 1978 r80/7 down shifting issue
If you feel something is wrong with the foot shifter, you may have to remove the whole setup from the transmission and tighten things up. What part of it is wobbly? Can you take a picture and upload it? The loose allen wrench head that you refer to is tied to part of the driver's footpeg. You would need to loosen the left rear motor mount so that the peg can be removed. But the other parts of the shift mechanism may also need to be removed.
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.
Re: 1978 r80/7 down shifting issue
Thanks for Setting me and my bike straight!
- schrader7032
- Posts: 9038
- Joined: Fri Oct 27, 2006 3:00 am
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- Been thanked: 34 times
Re: 1978 r80/7 down shifting issue
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.
- srankin
- Posts: 1078
- Joined: Fri Jul 14, 2017 8:45 pm
- Location: Spencerport, NY USA
- Been thanked: 17 times