|
Post by magoconnor on Apr 9, 2020 9:20:20 GMT -5
It has plenty of travel around 200mm. The thing I dont wanna get into, is cutting the chrome tube and re-threading it, other than that I'm game for anything. How much is possible without cutting down the chrome tube, do you think?
|
|
|
Post by magoconnor on Apr 8, 2020 12:01:55 GMT -5
How much do you guys think this front shock CAN be lowered, by cutting the spring or adding a spacer or maybe both? I really dont wanna slide them further up the triple tree.
|
|
|
Post by magoconnor on Apr 7, 2020 8:50:48 GMT -5
How much do you guys think this front shock CAN be lowered, by cutting the spring or adding a spacer or maybe both? I really dont wanna slide them further up the triple tree. www.motor-x.com/shock-absorber-front-left-700mm,p.html Tell me what you think
|
|
|
139fmb
Apr 5, 2020 12:18:19 GMT -5
Post by magoconnor on Apr 5, 2020 12:18:19 GMT -5
Hello.
So I recently pick up a bike with this engine 139fmb. From what I can find, its suppose to be a copy of a honda engine just like a 139qmb, but instead of a cvt drive system, it has gears and is chain driven.
Any of you guys have experience with engine?
|
|
|
Post by magoconnor on Apr 2, 2020 11:43:26 GMT -5
Hello.
Have any of you guys had experience with this scooter/chopper? I believe the engine is a 139Fmb with 4 gears.
|
|
|
Post by magoconnor on Mar 30, 2020 18:57:26 GMT -5
|
|
|
Post by magoconnor on Mar 26, 2020 1:44:29 GMT -5
I can see there is alot of mixed opinions on this subject, maybe it would be better to nailed down what "safe" rpms really means for a 139qmb engine.
Like what would be a good cylinder head temperature for just riding around/ cruising. And what the max temperature is, before it melts like a metal candle.
|
|
|
Post by magoconnor on Mar 24, 2020 16:17:31 GMT -5
My crank is aleady upgraded tho, but I think 2 strokes and 4 strokes engines may differ in cruising rpms, seeing that a 2strokes with the right crank and bearing can go to 14k or more.
|
|
|
Post by magoconnor on Mar 23, 2020 11:31:08 GMT -5
Well the engine can pull 10k with ease, from looking around and talking to a few people the naraku hd crank limit is 11k. I do have a tac and a cht gauge so I can monitor the shiet out the engine.
|
|
|
Post by magoconnor on Mar 21, 2020 22:56:56 GMT -5
Hello guys. What rpm's would be sorta "safe" cruising around with? By "safe" I mean not cutting the engine life unecessary short.
My setup naraku 90cc kit 24mm carb naraku hd crank
|
|
|
Post by magoconnor on Mar 7, 2020 3:15:16 GMT -5
Have you any experience with these?
|
|
|
Post by magoconnor on Mar 6, 2020 15:19:51 GMT -5
Would you say they are around 10% taller? I'm not sure how much taller gear my setup can pull with out losing a fair bit of accerleration. Ofcause some of it can be dealt with some cvt tuning. But I 17% would be a too much, I'm only for small amout of top end. I think we run about the same setup tho, so maybe you have some much needed experience with these gear up kit? My setup: naraku 90cc Kit with Bvh naraku 24mm carb A cam that likes revs A slighter lighter flywheel. And a ton of other parts.
|
|
|
Post by magoconnor on Mar 6, 2020 12:44:36 GMT -5
|
|
|
Post by magoconnor on Mar 5, 2020 22:03:34 GMT -5
|
|
|
Post by magoconnor on Mar 5, 2020 21:36:05 GMT -5
I found these numbers in the manual, not sure what to make of them tho.. Primary reduction : 3,25 secondary reduction : 3,4 hope it can help, I would really like to find out what the stock gear ratio is, before buying a new set. Also here is a picture, maybe it can tell you something.
|
|