Search found 313 matches

by Tillywolves
Wed Aug 17, 2022 11:39 pm
Forum: Dumpers
Topic: Thwaites Nimbus Dumper Gearbox
Replies: 40
Views: 14038
Flag: Great Britain

Re: Thwaites Nimbus Dumper Gearbox

Blimey, what a great job you did there Andy.....
by Tillywolves
Wed Jun 08, 2022 12:56 am
Forum: Dumpers
Topic: Nimbus non starter.....
Replies: 33
Views: 7966
Flag: Great Britain

Re: Nimbus non starter.....

Starting requires a can of Cosby party gas. It quite happily ticks over. Not very responsive on when reving up, so Im guessing it needs the timing and fuel setting up properly.
by Tillywolves
Sun Jun 05, 2022 1:46 pm
Forum: Dumpers
Topic: Nimbus non starter.....
Replies: 33
Views: 7966
Flag: Great Britain

Re: Nimbus non starter.....

Then found the clutch is seized on and wont disengage. Another job to do.... as well as adjusting up the brakes. Also need a new set of front tyres, as mine have started to crack up and split. Never ends...
by Tillywolves
Sun Jun 05, 2022 1:42 pm
Forum: Dumpers
Topic: Nimbus non starter.....
Replies: 33
Views: 7966
Flag: Great Britain

Re: Nimbus non starter.....

So, fitted all the parts together. OIl change and new filter. Oil was thick, black and goopy, so well past its best. New piston rings have been fitted, so I hones out the barrel. Rockers got a new set of bushes, but were well worn out at the ends, so I will need to replace those. Still having proble...
by Tillywolves
Sun Jun 05, 2022 1:28 pm
Forum: Dumpers
Topic: Nimbus non starter.....
Replies: 33
Views: 7966
Flag: Great Britain

Re: Nimbus non starter.....

Got a replacement second hand head off Ebay, as the intake pins had been broken on my existing. Stripped down the valves to find the exhaust coked up. Cleaned out, lapped and refitted... http://www.classicmachinery.net/forum/images/userpix/47367_2VIOHM22YVQCK1654428157.jpg http://www.classicmachiner...
by Tillywolves
Sun Jun 05, 2022 1:21 pm
Forum: Dumpers
Topic: Nimbus non starter.....
Replies: 33
Views: 7966
Flag: Great Britain

Re: Nimbus non starter.....

Image

Connecting rod rebushed....
by Tillywolves
Thu May 26, 2022 11:12 am
Forum: Dumpers
Topic: Nimbus non starter.....
Replies: 33
Views: 7966
Flag: Great Britain

Re: Nimbus non starter.....

And Ive ordered a set of assorted gasket papers...
by Tillywolves
Thu May 26, 2022 8:44 am
Forum: Dumpers
Topic: Nimbus non starter.....
Replies: 33
Views: 7966
Flag: Great Britain

Re: Nimbus non starter.....

Finally had some time to work on the dumper yesterday. New piston rings arrived, and Ive ordered a new small end bush, big end bearings, a bush set for the rockers and a shim kit to set up the bump clearance. There was a lot of play/wear in the old bearings. http://www.classicmachinery.net/forum/ima...
by Tillywolves
Sat Apr 16, 2022 11:00 pm
Forum: Dumpers
Topic: Nimbus non starter.....
Replies: 33
Views: 7966
Flag: Great Britain

Re: Nimbus non starter.....

Shouldn't be an issue, as the joint at the bottom of the pump is only internally lubricated with oil from the crankcase.

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