Originally Bultaco tanks had no sealer of any description from the factory and they never had an issue. The problem today is ethanol in the fuel, as it really attacks fiberglass. Caswell seems to be the most widely used by all of my friends. My tanks are all sealed with a cup full of colored resin and I've had no issues but I don't use ethanol based fuels. Regarding the stress cracks in the original gelcoat I think that's a much bigger issue and can't see a clear gelcoat solving the issues, I would be more inclined to sand al the stress cracks out and apply another original colored gelcoat. Non of this is really expensive just time consuming
Mmmmm sherpa325,
Is it possible for you to list your" all of my friends" please? Its not that I doubt what your saying,its just id like to check up with all of them.
If your replacing the main bearings, the flywheel side bearing has an oil drain hole in it. It needs to line up with the drain back hole to the gearbox area. It’s the lower one.
Actually, the new style bearings, from late 2003 on , have a drain hole drilling in them. The right side doesn’t need to be lined up.
As you say it’s the springs and the pins hitting, you would think maybe the basket or the hub are spaced out too far. 6mm is a large gap trying a different case.
You might need to pull it apart and check the chain alignment. Checking to see if the basket is out of alignment with the crankshaft sprocket. If it’s right, check the spacer thickness between the clutch hub and basket. I don’t have a measurement for it.
The later clutch assemblies use threaded pins and nuts.
That's not the only thing that isn't working and using your mates wife for your avatar, what can I say
5 hours ago, pschrauber said:
Hi BRT650, your avatar isn't moving anymore!
That’s my mum Sherpa325. I told mum there was a handsome gentleman from Queensland that might give her a call , but that hasn’t happened yet feetupfun.
Hello pschrauber, I like your version of setting timing much better than sherpa325. I think his explanation is lost in the translation somehow. My Avatar, maybe it’s been affected by covid-19. I can’t remember how I did it, so there’s no way I can fix it.
They are a pretty simple motor and will run even when the ignition timing is a fair way off. It can be a little tedious to get it set correctly at 2.7 - 2.9 . I have found the best way to do it is to set the points on the low side of the allowable gap and then rotate the backing plate by loosening the three screws that hold it in place to achieve the correct timing, and it's probably going to take a couple of goes to get it right.
Cheers Greg
Well congratulations nw rain man,
I’ve been asking sherpa325 how to do the timing on my 159 350 for over ten years. He has never told me how to do it and you ask and straight away you have a way of doing it.
Thanks for doing that, I’ll go out in the shed and get straight on it. Make sure you tell us how you went.
Well I'm not too big to admit I may have the cc capacity of the bike incorrect, But I didn't want to put said owner/ Christmas gift receiver through all that pain again trying to receiving that information . I believe you drove off leaving him to repair the damage you caused. Not much damage really. A barrel, piston kit and gaskets. It was probably due for a de-coke anyway. I guess he had to wait till his birthday to get those items.
I'm also lead to believe his Aunty drove two hours to watch him ride his new gift. I guess she probably watched him ride it on his birthday. No biggie.
"I had in the back of my mind maybe it was to stop over revving the bike during the break in period!"
Not trying to be picky here;
BUT if you knew this could happen to any bike would you like to explain how a certain Brand New GasGas 300 seized within 2 minutes of you riding it? Not to mention it was someone else's Christmas present!
Are you trying to remove the brake caliper pistons?
Remove the caliper from bike and screw in a grease nipple into the banjo bolt hole and pump out the pistons with the grease.If one piston is loose and the other jambed , just put a "g" clamp on the loose piston and pump away.
If possible check the brake drums. The chrome brake surface has a tendency to come adrift. It's not that expensive to have the drums relined. Just a time consuming exercise with R & R ing the rim/s and spokes.
Even with poor brakes they are a better bike than any Honda.
Whoops did I say that out loud? Anyway I hope you have luck in getting one.
P.S I saw a Sherpa T 1975 model (159) with honda wheels fitted to it on the week end. Dam ugly.
Bultaco Fiberglass refinishing
in Bultaco
Posted
You don't know how happy that makes me feel