charlieman22 wrote:
108 - first up - sorry man - that is brutal.
Glad its just some bruises and skin that will heel - without breaks.
Doesn't mean it doesn't suck.
Can you recap the incident and what happened afterwards as specifically as possible?
- You shifted in to second - and when you let out the clutch it locked up.
- But when you went to pick up the scoot - the rear wheel was spinning and the motor was running.
All - Sime66 did a spread sheet break down on what turns and when between gear box and crank shaft that could be helpful here. I looked but couldn't find. Anyone know where that is?
108 - If it locked up when you shifted - that would have stopped the motor - momentarily anyway - I think. The fact that it was running and spinning when you realized you were on the ground sounds like something jammed - and then released - to me.
As painful as it is - I would be hard pressed not to split the cases personally - and have a very close look - for both foreign objects - as well as any cracked rods, seats, or gear teeth.
I think Sime's chart could be helpful in coming up with a theory that would fit the bill from your symptoms.
Sorry again - and glad you are bruised but not broken.
Take it easy - fall like that takes some time.
Thanks CM2, still feeling super sore even after 36hours... lol the bruises... surprised to see the road rash has no stones... not the most pleasant picking stones out of your skin... lol
Yeah, so the more i think about it, the more i remember.
So just riding over to the spot i usually do the carb runs. theres a loop of about 1km i do before i get there, its a good warm up test, as anything happens, i can push it home. So this road i had the wipe out on, I've ridden down 1000 times or more, its the road i ride to work on. The road turns right, goes down hill for about 100metres, then takes another right, before hitting a set of traffic lights.
So at the first right, im in 1st gear as its an uphill slope before going downhill, I take the turn, its all good, then the road starts downhill, i shift to second, give a twitch of gas which makes it quite fast, im about 50metres on that downhill and I release the clutch and it locks up... then its a little hazy, but i THINK i pull the clutch, nothing happens, i definitely hit the front break to try slow down, hit the rear break which did nothing but push the vespa to lean to the left, and wobble wobble and the vespa is on its left side sliding down the slope with me just to the left of the vespa. My immediate reaction was "What the hell happened to the clutch?"
Dusted myself off, bike is leaning on the clutch side of the handlebar, I step over it to pick the bike up and to my surprise, I notice the engine is still running, I usually look to see if its still running and if theres fuel pouring out, and notice too the rear wheel is still moving (not momentum it was spinning pretty evenly)... pick the bike up and it stalls. I vividly remember it stalling when the rear wheel touched the floor (but actually shouldnt it have stalled if its in gear because theres no throttle??)
push the bike to one side, talk to a bunch of people and kick started it to see if it would run and it started first kick, got a little adventurous and started riding down the road, then it occurred to me i should probably push it... stopped did a visual inspection, clutch still works etc, then i realised im a little far out kicked it again and slowly rode it back home... went through all the gears fine... had the leg shield rubber flapping about but all seemed fine.
So did the videos yesterday after family commitments, it was driving me crazy to not know what it could be... but seems all to be fine...
I feel like it might be a primary tooth broke off... ive had that before... but the previous time, i was pushing it hard 1st to 2nd gear, and i heard it break that time... you could hear the tooth rattle around too...
Looks like i'll be splitting the cases... kinda dont want to do it, especially after spending the time doing the leakdown test etc and i spent a lot of time to make sure the gasket was on the small side of the crankcase properly to avoid oil suckers, and its one of those fancy BGM gaskets too (im not buying anything from Scooter center for a while)...... also just rethinking the need to rewire the ignition (it was a splice job that i never ended up adding connector properly... urghh... but looks like we might be splitting cases together... lol!
To be honest, the driveshaft, gears and primary are all taken from another engine, old, but i never used before... stock parts... the reinforced set was stuck in another rotary engine setup... lesson learnt, but honestly i wouldnt have done it any other way.... I'll probably gut that engine and transfer everything over...
Interested to see the chart. Not quite sure if its applicable, but good to have new insights.
⚠️ Last edited by 108 on UTC; edited 1 time