spents shorty roofchopper rail build

[Seandonato73]

Thank God your not putting that trash on the hammer

 

[spents]

so i chucked up the starter case and squared off the end of the bolt thats snapped off,
drilled it out and removed it ,
sounds easy but hah, it fought me for what seemed like forever ,
re tapped the hole/chased the threads out, the top couple of threads are toast, but theres around 15mm of thread to play with in the hole ,



cleaned up the face of the spool cos that was all chewed up an all ,



lossely fitted it together to check some stuff,
nt sure whether to lock it up or fit the secondary ''ezi start'' spring yet,
also needs just under 1mm taking off the centre post to tighten the tolerances back up again,
needs one of ryans @Rep732 cable kits fitting then will give it a try and see if its okily dokily ,

 

[Rep732]

Looking good Paul

 

[spents]

Looking good Paul

thanks ryan ,
hopefully it works good again when sorted, if not, it was worth a try ,

 

[Rep732]

I think you got it this time Paul

 

[spents]

made this little stub/spacer doodad today ,



the idea is to take up the slop and stop the plastic dog doodad flexing so much,
when that dog flexes the secondary spring forces its way between the plastic and alloy part of the spool jamming everything up,
hopefully this fixes that issue ,



bit more machining to take slop out, then reassembled , fitted one of ryans cables etc ,
fitted with a secondary spring for now to see what happens,
if it eats itself again then i'll lock the dog to the spool and try again ,



gave it a bit of a buff ,



just need to find some small shims now to take the slop out of the pawl cage ,
then can fit it and see if it works proper,

 

[DougStar]

Great work spent now slap that female dog on there

 

[Rep732]

Yea what he said

 

[spents]

Great work spent now slap that female dog on there

thanks doug ,
yeh that will happen laters today, not had much workshop time again of late, so am in there the odd hour when i can ,
need to make myself more time

Yea what he said

View attachment 77230

ryan,

 

[spents]

found some shims to shim the pawl cage with , thats taken most of the slop out now,
fitted the pawl cage, must have picked up a cheese screw by mistake and turned the head straight out of it when tightening ,
removed it and found some torx head bolts , much better with torx in there ,



fitted the starter, it pulls over fine, will see if the secondary spring holds up ,



i want to change the carb out before i try and fire it up again though, it has a 668 on at moment,
found an almost new 1107 in spares box, as well as a carb i'm not quite sure about,
its stamped 989 ?
989 is on the left in the pic,

 

[PortCityRC]

https://www.ebay.com/itm/GENUINE-WA...p2349624.m46890.l6249&mkrid=711-127632-2357-0

 

[spents]

https://www.ebay.com/itm/GENUINE-WA...p2349624.m46890.l6249&mkrid=711-127632-2357-0

thanks port ,
does anyone know how many different numbers there are for the 668 carb ?
i though 997 was also the other number for the 668 as well

 

[Rep732]

 

[spents]

lmao ryan, yeh i just checked 997 is what on my twin , and there a 668, so 997, 989 are same as 668,
any advance on these ?
i bet sean could come up with a looooooooooong list of equivalent numbers off the top of his head ,

 

[Rep732]

Best to have sean answer that because all I know about carbs is it either goes broooom when it's good or just pisses you off when it's bad

 

[Seandonato73]

lmao ryan, yeh i just checked 997 is what on my twin , and there a 668, so 997, 989 are same as 668,
any advance on these ?
i bet sean could come up with a looooooooooong list of equivalent numbers off the top of his head ,

There are a lot of carb numbers that Interchange. If you look at the break down of each carb you'll see the bore and venturi are the same, but they changed this or that and gave it a different number. Could be as simple as no purge assembly, or the metering spring is specific for a certain mfg. They all basically run the same in the end.

 

[spents]

There are a lot of carb numbers that Interchange. If you look at the break down of each carb you'll see the bore and venturi are the same, but they changed this or that and gave it a different number. Could be as simple as no purge assembly, or the metering spring is specific for a certain mfg. They all basically run the same in the end.

sean ,

 

[crucialRC]

I like this spents

 

[DougStar]

I have a pair of "686" but dose not say that on the carb ill dig them up later and get the number

 

[spents]

I like this spents

thanks lance

I have a pair of "686" but dose not say that on the carb ill dig them up later and get the number

i bet there off the twin doug and they'll be the same as mine, the 997's