Repair diary Sinclair C5 - Page 9:
- 1 A Puky gives its life
- 2 An electric toothbrush with some real power
- 3 Repair diary: table of contents
A Puky gives its lifeThe sanding of the brake was wasted time - just purchased a wonderful new aluminium brake via eBay. Front wheel now complete again.
Today I found a very nice sprocket for the gear hub on a flea market - it is a pedal gear from an old Puky fairy cycle.
The Puky resisted to be cannibalized (one of the screws was nagged in such a manner that it just could not be removed) but in the end it could not withstand the brute power of an angle grinder. Rest in pieces Puky.
Now there is one problem remaining: I need a 66mm hole lathed in this sprocket to mount it on the gear hub.
Good, if you know someone who knows someone who can do this...
Unfortunately, this will take some time and meanwhile I can barely continue with working.
Another little problem is the gear transmission ratio with the intermediate gear hub.
The C5s original gear transmission ratio is 42 : 20 - thus 2.1 : 1.
With the intermediate gear hub the complete ration would be 42 : 24 and 30 : 20 (1.75 : 1 x 1.5 : 1) - thus 2.625 : 1.
I have no idea if this affects the drivability in a negative manner. I think the best would be to check this in a test run.
In case of doubt I can still replace sprocket  with a 32 cog sprocket (this would result a ratio of 2 : 1).
Wednesday, 20. May 2009:
An electric toothbrush with some real powerAs you can read on Camp0s, the only way to get the body really clean is scrubbing with a toothbrush.
My own cleaning attempts last Wednesday confirm this too.
But extensive scrubbing, step by step, with a toothbrush is not only exhausting but also very time-killing.
So of course I wouldn't do myself such a thing. There must be an easier way!
First I thought I could use my old electric toothbrush. But then again I wasn't certain this would suffice. You need a little bit more power.
Just like this:
Thanks to this monster the body was cleaned within one hour.
Ok, from a close range there are still some grey spots visible. I think these will never go away. But considering the age of the C5 this is certainly tolerable.
If you now like to try this at home you should know:
- You will get wet. Better do this on a hot summer day.
- And quite more important: water and current is a dangerous combination! If you have, you should take a cordless screwdriver. If you don't have one, I'd suggest to rather take the good ol' toothbrush.
Repair diary: table of contents
- Page 1Prelude
- Page 1A new project
- Page 2Demounting and first problems
- Page 2Fighting with steering bar
- Page 3Exhumation of a motor
- Page 3Let there be light!
- Page 4The "ant cave"
- Page 4Rust, rust, rust
- Page 5Sanding, sanding, sanding
- Page 5Sanding the brake attachment
- Page 6Sanding the frame
- Page 6Front wheel dismounted and sanded
- Page 6A soap opera
- Page 7Finished with sanding the frame, painted the wheel fork
- Page 7Frame and wheel fork painted
- Page 8Painted the wheel fork once again, front wheel ball-bearings cleaned
- Page 8Ball-bearings from the Titanic
- Page 9A Puky gives its life
- Page 9An electric toothbrush with some real power
- Page 10Back to work!
- Page 10Gear hub mounting
- Page 10Chain and other things
- Page 11Reflector stripes, assembly, new problems
- Page 11Trailer hitch and more
- Page 12I am frustrated!
- Page 12Puky is cannibalised again
- Page 13I am Iron Man!
- Page 13Gear hub mounting finished
- Page 14Front wheel rim made of steel
- Page 14Make it street legal