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Old March 13th, 2020, 07:01 AM   #9
jkv45
Rev Limiter
 
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Name: Jay
Location: WI
Join Date: Jul 2013

Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes

Posts: A lot.
MOTM - Jun '18, Oct '16
Quote:
Originally Posted by Chloebelle View Post
Hi all! It's been a while since I've posted anything, but I'm slowly getting back into riding after multiple... Issues.

Late last year while riding to work, she was struggling hard to react to throttle (sputtering, intermittent power jumps), and then when she finally started to "wake up"... The damn chain hopped off and wrecked the tension adjusters.

So, recent work done:
-New chain and sprockets (actually managed myself, though a bit of a pain)
-Carbs cleaned and valves adjusted by a local shop (they were highly recommended by a friend, and Harumi definitely runs better now)

At present, I'm in need of a new front brake rotor, and was hoping to get some recommendations on where to get one, and what make/model. Aside from used and aftermarket stuff on eBay, I'm not finding a lot of info. I'm just looking for a decent OEM replacement, nothing to high-performance as I'm just a daily rider, and not into racing/GOTTAGOFAST. :P

Also: She's still having issues with losing power at high throttle, and I'm struggling to get her up over 40mph. She has an aftermarket air filter and box (K&N pod filter, like that when I got her), and the shop mentioned it may be due to the carbs not being properly jetted. Were there any other potential causes of this or cheap fixes? I'm not against switching her back to an OEM filter/airbox setup. A coworker who rides mentioned it may be a fuel delivery issue (clogged petcock or something)?

I'm kinda at a loss here and knowing what the best solution for either of these issues is. @__@
Sorry to hear you are still having problems after trusting your cycle to a respected shop.

Don't these "expert" shops take the cycles for a ride to see if they operate correctly? What kind of "professional" mechanic doesn't go for a test ride after major repairs?

It sounds like the carbs are not completely clean or adjusted properly. The jetting should be fine even with that filter, and it should pull all the way to redline and top speed if everything is correct. The petcock should be checked for flow (inside of the tank checked for debris as well), and also checked that all the lines are connected correctly.

Your gearing change isn't making it run poorly. It may decrease the acceleration somewhat, but it isn't going to make it run poorly, not rev completely, or not reach highway speeds.

I would take it back to the shop and tell them to fix it right - and test it before they tell you it's fixed.

Riding it in this condition is too dangerous.
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